Patchwork ext4 xfstests-bld results for 3.8-rc6 on Pandaboard ES

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Submitter Eric Whitney
Date Feb. 7, 2013, 10:05 p.m.
Message ID <20130207220536.GA16092@wallace>
Download mbox | patch
Permalink /patch/219007/
State Not Applicable
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Comments

Eric Whitney - Feb. 7, 2013, 10:05 p.m.
These are the results of a run of Ted Ts'o's xfstests-bld test harness against
ext4 on a Pandaboard ES running a 3.8-rc6 kernel.  The harness contains
several test suites exercising various combinations of ext4 mount options.
Each segment of the text below describes the mount options used in each
scenario (although not noted, the block_validity option was also used in all
cases), a list of xfstests run, and notes discussing any failures reported by 
the suite or found in the syslog.

Code built from the tips of the e2fsprogs and xfstests master branches was
used for this testing rather than that found in the xfstests-bld tree.

With one exception noted below, the test results taken on the Pandaboard (ARM
processor) are the same as those observed from a run on an x86-64 KVM guest.

Thanks,
Eric


BEGIN TEST: Ext4 4k block Fri Feb  1 13:08:25 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
 207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245
 246 247 248 249 255 256 257 258 263 271 277 289 294
Passed all 69 tests
END TEST: Ext4 4k block Fri Feb  1 14:07:45 EST 2013


BEGIN TEST: Ext4 4k block w/nodelalloc, no flex_bg, and no extents Fri Feb  1
 14:08:14 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
 207 210 211 212 215 219 221 225 230 235 236 237 240 245 246 247 248 249 257
 258 263 271 277 289 294
Passed all 62 tests
END TEST: Ext4 4k block w/nodelalloc, no flex_bg, and no extents Fri Feb  1 
 14:38:05 EST 2013


BEGIN TEST: Ext4 4k block w/ no journal Fri Feb  1 14:38:10 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
 207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245
 246 247 248 249 255 256 257 258 263 271 277 289 294
Passed all 69 tests
END TEST: Ext4 4k block w/ no journal Fri Feb  1 15:33:29 EST 2013


BEGIN TEST: Ext4 1k block Fri Feb  1 15:33:52 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
 207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245
 246 247 248 249 255 256 257 258 263 271 277 289 294
Passed all 69 tests
END TEST: Ext4 1k block Fri Feb  1 16:05:38 EST 2013


BEGIN TEST: Ext4 4k block w/nodelalloc and no flex_bg Fri Feb  1 16:05:45 EST
 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
 207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245
 246 247 248 249 255 256 257 258 263 271 277 289 294
Failures: 223
END TEST: Ext4 4k block w/nodelalloc and no flex_bg Fri Feb  1 16:36:47 EST
 2013

Notes:

1) This is a sample of the 223 failure output (also seen on x86-64);  the
complete test log contains numerous additional mismatches of the same sort:

223 54s ...	[15:33:09] [15:34:11] - output mismatch (see 223.out.bad)
    --- 223.out	2012-12-23 14:52:52.897392805 -0500
    +++ 223.out.bad	2013-02-06 15:34:11.750303000 -0500
    @@ -204,47 +204,47 @@
     SCRATCH_MNT/file-1-131072-falloc: well-aligned
     SCRATCH_MNT/file-1-131072-write: well-aligned
     SCRATCH_MNT/file-2-131072-falloc: well-aligned
    -SCRATCH_MNT/file-2-131072-write: well-aligned
    +SCRATCH_MNT/file-2-131072-write: Start block 33296 not multiple of sunit 32
     SCRATCH_MNT/file-3-131072-falloc: well-aligned
     SCRATCH_MNT/file-3-131072-write: well-aligned
     ...


BEGIN TEST: Ext4 4k block w/metadata_csum Fri Feb  1 16:36:54 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
 207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245
 246 247 248 249 255 256 257 258 263 271 277 289 294
Passed all 69 tests
END TEST: Ext4 4k block w/metadata_csum Fri Feb  1 17:09:01 EST 2013


BEGIN TEST: Ext4 4k block w/dioread_nolock Fri Feb  1 17:09:01 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
 207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245
 246 247 248 249 255 256 257 258 263 271 277 289 294
Passed all 69 tests
END TEST: Ext4 4k block w/dioread_nolock Fri Feb  1 18:05:12 EST 2013

Notes:

1) 113 produces lockdep warnings on 3.8-rc6 that I've only seen on the
Pandaboard so far (this is the only testing anomaly on -rc6 that appears to be
unique to it).  I've seen them on both the Pandaboard and x86-64 in past -rc's,
and the signature has varied over time with different rc's.  The lockdep
warning is lengthy, so I've placed it at the end of this report.


BEGIN TEST: Ext4 4k block w/data=journal Fri Feb  1 18:05:32 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
 207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245
 246 247 248 249 255 256 257 258 263 271 277 289 294
Failures: 223
END TEST: Ext4 4k block w/data=journal Fri Feb  1 19:01:44 EST 2013

Notes:

1) The following message appears in the syslog when xfstest 246 is run (also
seen on x86-64):

JBD2: Spotted dirty metadata buffer (dev = sda1, blocknr = 160256). There's a
risk of filesystem corruption in case of system crash.

2) This is a sample of the 223 failure output (also seen on x86-64);  the
complete test log contains numerous additional mismatches of the same sort:
223 61s ...	[15:48:55] [15:50:18] - output mismatch (see 223.out.bad)
    --- 223.out	2012-12-23 14:52:52.897392805 -0500
    +++ 223.out.bad	2013-02-06 15:50:18.437803000 -0500
    @@ -204,45 +204,45 @@
     SCRATCH_MNT/file-1-131072-falloc: well-aligned
     SCRATCH_MNT/file-1-131072-write: well-aligned
     SCRATCH_MNT/file-2-131072-falloc: well-aligned
    -SCRATCH_MNT/file-2-131072-write: well-aligned
    +SCRATCH_MNT/file-2-131072-write: Start block 33296 not multiple of sunit 32
     SCRATCH_MNT/file-3-131072-falloc: well-aligned
     SCRATCH_MNT/file-3-131072-write: well-aligned
     ...


BEGIN TEST: Ext4 4k block w/bigalloc Fri Feb  1 19:02:10 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
 207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245
 246 247 248 249 257 258 263 271 277 289 294
Failures: 015 219 235
END TEST: Ext4 4k block w/bigalloc Fri Feb  1 19:21:22 EST 2013

Notes:

1) This is all of the 015 failure output (also seen on x86-64):

015 6s ...	[17:23:07] [17:23:12] - output mismatch (see 015.out.bad)
    --- 015.out	2012-12-23 14:52:52.530205305 -0500
    +++ 015.out.bad	2013-02-06 17:23:12.390928000 -0500
    @@ -4,4 +4,5 @@
     check free space:
     delete fill:
     check free space:
    -   !!! free space is in range
    +   !!! free space has value of 0
    +free space is NOT in range 43655.04 .. 44536.96
     ...

Multiple bursts of messages similar to this sample appear in the syslog when
015 is run:

EXT4-fs (sda2): delayed block allocation failed for inode 12 at logical offset 11056 with max blocks 2048 with error -28
EXT4-fs (sda2): This should not happen!! Data will be lost
EXT4-fs (sda2): Total free blocks count 0
EXT4-fs (sda2): Free/Dirty block details
EXT4-fs (sda2): free_blocks=0
EXT4-fs (sda2): dirty_blocks=42992
EXT4-fs (sda2): Block reservation details
EXT4-fs (sda2): i_reserved_data_blocks=998
EXT4-fs (sda2): i_reserved_meta_blocks=1689
EXT4-fs (sda2): delayed block allocation failed for inode 12 at logical offset 13105 with max blocks 2048 with error -28
EXT4-fs (sda2): This should not happen!! Data will be lost

Occasionally (maybe 20% of the time), 015 will lead to a stall where the test
makes no further forward progress.  This happens at the end of the test when
a file used to consume available free space on the filesystem is deleted.
The rm is left in the D state, a flusher thread continues to run and
accumulate time, and I/O is continuously written to the storage device at a
slow rate.


2) This is all of the 219 failure output (also seen on x86-64):

4) When 225 is run, one or more instances of the following warning will be
posted to the syslog (also on x86-64):

WARNING: at fs/ext4/inode.c:362 ext4_da_update_reserve_space+0x214/0x280()
Modules linked in:
[<c0016d18>] (unwind_backtrace+0x0/0x104) from [<c059e450>] (dump_stack+0x20/0x24)
[<c059e450>] (dump_stack+0x20/0x24) from [<c0037c68>] (warn_slowpath_common+0x5c/0x74)
[<c0037c68>] (warn_slowpath_common+0x5c/0x74) from [<c0037cac>] (warn_slowpath_null+0x2c/0x34)
[<c0037cac>] (warn_slowpath_null+0x2c/0x34) from [<c01af4f4>] (ext4_da_update_reserve_space+0x214/0x280)
[<c01af4f4>] (ext4_da_update_reserve_space+0x214/0x280) from [<c01dc928>] (ext4_ext_map_blocks+0xc10/0x153c)
[<c01dc928>] (ext4_ext_map_blocks+0xc10/0x153c) from [<c01af624>] (ext4_map_blocks+0xc4/0x230)
[<c01af624>] (ext4_map_blocks+0xc4/0x230) from [<c01b3c6c>] (mpage_da_map_and_submit+0xa0/0x598)
[<c01b3c6c>] (mpage_da_map_and_submit+0xa0/0x598) from [<c01b494c>] (ext4_da_writepages+0x2d8/0x564)
[<c01b494c>] (ext4_da_writepages+0x2d8/0x564) from [<c00e38cc>] (do_writepages+0x34/0x48)
[<c00e38cc>] (do_writepages+0x34/0x48) from [<c00d9b64>] (__filemap_fdatawrite_range+0x5c/0x64)
[<c00d9b64>] (__filemap_fdatawrite_range+0x5c/0x64) from [<c00d9ba4>] (filemap_fdatawrite+0x38/0x40)
[<c00d9ba4>] (filemap_fdatawrite+0x38/0x40) from [<c00d9bdc>] (filemap_write_and_wait+0x30/0x54)
[<c00d9bdc>] (filemap_write_and_wait+0x30/0x54) from [<c0128864>] (do_vfs_ioctl+0x498/0x5d8)
[<c0128864>] (do_vfs_ioctl+0x498/0x5d8) from [<c0128a18>] (sys_ioctl+0x74/0x94)
[<c0128a18>] (sys_ioctl+0x74/0x94) from [<c000e3c0>] (ret_fast_syscall+0x0/0x3c)



Here's the lockdep report for xfstest 113 run in the dioread_nolock scenario
as mentioned above (the taint is due to an unrelated warning from the clk
subsystem believed to be unique to 3.8 on Pandaboards/OMAP):

[ INFO: possible circular locking dependency detected ]
3.8.0-rc6 #1 Tainted: G        W   
-------------------------------------------------------
aio-stress/8597 is trying to acquire lock:
 (&mm->mmap_sem){++++++}, at: [<c00f1928>] get_user_pages_fast+0x48/0x88

but task is already holding lock:
 (&ei->i_data_sem){++++.+}, at: [<c01ae2a8>] ext4_direct_IO+0x3d4/0x450
 
which lock already depends on the new lock.
 
 
the existing dependency chain (in reverse order) is:
 
-> #1 (&ei->i_data_sem){++++.+}:
       [<c008c190>] __lock_acquire+0x162c/0x1b04
       [<c008cb70>] lock_acquire+0x9c/0x114
       [<c05a4f78>] down_read+0x40/0x50
       [<c01af6dc>] ext4_map_blocks+0x17c/0x230
       [<c01b1b6c>] _ext4_get_block+0x84/0x164
       [<c01b1d2c>] ext4_get_block+0x34/0x3c
       [<c0153bfc>] do_mpage_readpage+0x4d8/0x754
       [<c0153f50>] mpage_readpages+0xd8/0x134
       [<c01aedf4>] ext4_readpages+0x4c/0x54
       [<c00e3cbc>] __do_page_cache_readahead+0x1e8/0x2b0
       [<c00e408c>] ra_submit+0x38/0x40
       [<c00db0d4>] filemap_fault+0x3b4/0x490
       [<c00fb220>] __do_fault+0x78/0x4a8
       [<c00fe36c>] handle_pte_fault+0x80/0x6f8
       [<c00fea8c>] handle_mm_fault+0xa8/0xd8
       [<c05a91bc>] do_page_fault+0x294/0x3b4
       [<c05a9384>] do_translation_fault+0xa8/0xb0
       [<c00083f4>] do_DataAbort+0x44/0xa8
       [<c05a751c>] __dabt_svc+0x3c/0x60
       [<c02d17c0>] __clear_user_std+0x34/0x64
 
-> #0 (&mm->mmap_sem){++++++}:
       [<c059fa20>] print_circular_bug+0x78/0x2c8
       [<c008c59c>] __lock_acquire+0x1a38/0x1b04
       [<c008cb70>] lock_acquire+0x9c/0x114
       [<c05a4f78>] down_read+0x40/0x50
       [<c00f1928>] get_user_pages_fast+0x48/0x88
       [<c0151110>] __blockdev_direct_IO+0x1be4/0x3840
       [<c01ae1ac>] ext4_direct_IO+0x2d8/0x450
       [<c00d9db0>] generic_file_direct_write+0xf4/0x20c
       [<c00da23c>] __generic_file_aio_write+0x374/0x454
       [<c01aa49c>] ext4_file_write+0x2ac/0x4d0
       [<c015cf18>] aio_rw_vect_retry+0x78/0x1ac
       [<c015d858>] aio_run_iocb+0x64/0x14c
       [<c015ed10>] do_io_submit+0x574/0x8ec
       [<c015f0a4>] sys_io_submit+0x1c/0x20
       [<c000e3c0>] ret_fast_syscall+0x0/0x3c
 
other info that might help us debug this:
 
 Possible unsafe locking scenario:
 
       CPU0                    CPU1
       ----                    ----
  lock(&ei->i_data_sem);
                               lock(&mm->mmap_sem);
                               lock(&ei->i_data_sem);
  lock(&mm->mmap_sem);
 
 *** DEADLOCK ***
 
1 lock held by aio-stress/8597:
 #0:  (&ei->i_data_sem){++++.+}, at: [<c01ae2a8>] ext4_direct_IO+0x3d4/0x450
 
stack backtrace:
[<c0016d18>] (unwind_backtrace+0x0/0x104) from [<c059e450>] (dump_stack+0x20/0x24)
[<c059e450>] (dump_stack+0x20/0x24) from [<c059fc24>] (print_circular_bug+0x27c/0x2c8)
[<c059fc24>] (print_circular_bug+0x27c/0x2c8) from [<c008c59c>] (__lock_acquire+0x1a38/0x1b04)
[<c008c59c>] (__lock_acquire+0x1a38/0x1b04) from [<c008cb70>] (lock_acquire+0x9c/0x114)
[<c008cb70>] (lock_acquire+0x9c/0x114) from [<c05a4f78>] (down_read+0x40/0x50)
[<c05a4f78>] (down_read+0x40/0x50) from [<c00f1928>] (get_user_pages_fast+0x48/0x88)
[<c00f1928>] (get_user_pages_fast+0x48/0x88) from [<c0151110>] (__blockdev_direct_IO+0x1be4/0x3840)
[<c0151110>] (__blockdev_direct_IO+0x1be4/0x3840) from [<c01ae1ac>] (ext4_direct_IO+0x2d8/0x450)
[<c01ae1ac>] (ext4_direct_IO+0x2d8/0x450) from [<c00d9db0>] (generic_file_direct_write+0xf4/0x20c)
[<c00d9db0>] (generic_file_direct_write+0xf4/0x20c) from [<c00da23c>] (__generic_file_aio_write+0x374/0x454)
[<c00da23c>] (__generic_file_aio_write+0x374/0x454) from [<c01aa49c>] (ext4_file_write+0x2ac/0x4d0)
[<c01aa49c>] (ext4_file_write+0x2ac/0x4d0) from [<c015cf18>] (aio_rw_vect_retry+0x78/0x1ac)
[<c015cf18>] (aio_rw_vect_retry+0x78/0x1ac) from [<c015d858>] (aio_run_iocb+0x64/0x14c)
[<c015d858>] (aio_run_iocb+0x64/0x14c) from [<c015ed10>] (do_io_submit+0x574/0x8ec)
[<c015ed10>] (do_io_submit+0x574/0x8ec) from [<c015f0a4>] (sys_io_submit+0x1c/0x20)
[<c015f0a4>] (sys_io_submit+0x1c/0x20) from [<c000e3c0>] (ret_fast_syscall+0x0/0x3c)
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Zheng Liu - Feb. 8, 2013, 3:55 a.m.
Hi Eric,

Thanks for sharing this.  The result is the same as my result on a x86
with a SSD.  Further, for 'Ext4 4k block w/dioread_nolock' and
'Ext4 4k block' cases I run all of xfstests' test cases, and the result
are the same and looks like the following:

Ran: 001 002 005 006 007 011 013 014 015 020 053 062 068 069 070 074 075
076 077 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127
128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210
211 212 213 214 215 219 221 223 224 225 226 228 230 231 232 233 234 235
236 237 239 240 243 245 246 247 248 249 255 256 257 258 263 269 270 271
272 273 274 275 277 280 285 286 289 294
Not run: 003 004 008 009 010 012 016 017 018 019 021 022 023 024 025 026
027 028 029 030 031 032 033 034 035 036 037 038 039 040 041 042 043 044
045 046 047 048 049 050 051 052 054 055 056 057 058 059 060 061 063 064
065 066 067 071 072 073 078 080 081 082 084 085 086 087 090 092 093 094
095 096 097 098 099 101 102 103 104 106 107 108 109 110 111 114 115 116
118 119 121 122 134 136 137 138 139 140 142 143 144 145 146 147 148 149
150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167
168 170 171 172 173 174 175 176 177 178 179 180 181 182 183 185 186 187
188 189 190 191 194 195 196 197 199 200 201 202 203 205 206 216 217 218
220 222 227 229 238 241 242 244 250 251 252 253 254 259 260 261 262 264
265 266 267 268 276 278 279 281 282 283 284 287 288 290 291 292 293 295
296
Failures: 274
Failed 1 of 99 tests

274      [failed, exit status 1] - output mismatch (see 274.out.bad)
    --- 274.out 2013-02-07 22:56:14.000000000 +0800
    +++ 274.out.bad     2013-02-08 11:47:12.000000000 +0800
    @@ -2,4 +2,5 @@
     ------------------------------
     preallocation test
     ------------------------------
    -done
    +failed to fill test file
    +(see 274.full for details)
     ...
     (Run 'diff -u 274.out 274.out.bad' to see the entire diff)

FWIW, I wonder whether we could give a report after every kernel is
released.  The report contains the result of xfstests and it could tell
us which test case is failed.  Then we can know whether the later patch
breaks something or not.

Regards,
                                                - Zheng

On Thu, Feb 07, 2013 at 05:05:36PM -0500, Eric Whitney wrote:
> These are the results of a run of Ted Ts'o's xfstests-bld test harness against
> ext4 on a Pandaboard ES running a 3.8-rc6 kernel.  The harness contains
> several test suites exercising various combinations of ext4 mount options.
> Each segment of the text below describes the mount options used in each
> scenario (although not noted, the block_validity option was also used in all
> cases), a list of xfstests run, and notes discussing any failures reported by 
> the suite or found in the syslog.
> 
> Code built from the tips of the e2fsprogs and xfstests master branches was
> used for this testing rather than that found in the xfstests-bld tree.
> 
> With one exception noted below, the test results taken on the Pandaboard (ARM
> processor) are the same as those observed from a run on an x86-64 KVM guest.
> 
> Thanks,
> Eric
> 
> 
> BEGIN TEST: Ext4 4k block Fri Feb  1 13:08:25 EST 2013
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
>  091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
>  207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245
>  246 247 248 249 255 256 257 258 263 271 277 289 294
> Passed all 69 tests
> END TEST: Ext4 4k block Fri Feb  1 14:07:45 EST 2013
> 
> 
> BEGIN TEST: Ext4 4k block w/nodelalloc, no flex_bg, and no extents Fri Feb  1
>  14:08:14 EST 2013
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
>  091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
>  207 210 211 212 215 219 221 225 230 235 236 237 240 245 246 247 248 249 257
>  258 263 271 277 289 294
> Passed all 62 tests
> END TEST: Ext4 4k block w/nodelalloc, no flex_bg, and no extents Fri Feb  1 
>  14:38:05 EST 2013
> 
> 
> BEGIN TEST: Ext4 4k block w/ no journal Fri Feb  1 14:38:10 EST 2013
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
>  091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
>  207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245
>  246 247 248 249 255 256 257 258 263 271 277 289 294
> Passed all 69 tests
> END TEST: Ext4 4k block w/ no journal Fri Feb  1 15:33:29 EST 2013
> 
> 
> BEGIN TEST: Ext4 1k block Fri Feb  1 15:33:52 EST 2013
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
>  091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
>  207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245
>  246 247 248 249 255 256 257 258 263 271 277 289 294
> Passed all 69 tests
> END TEST: Ext4 1k block Fri Feb  1 16:05:38 EST 2013
> 
> 
> BEGIN TEST: Ext4 4k block w/nodelalloc and no flex_bg Fri Feb  1 16:05:45 EST
>  2013
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
>  091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
>  207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245
>  246 247 248 249 255 256 257 258 263 271 277 289 294
> Failures: 223
> END TEST: Ext4 4k block w/nodelalloc and no flex_bg Fri Feb  1 16:36:47 EST
>  2013
> 
> Notes:
> 
> 1) This is a sample of the 223 failure output (also seen on x86-64);  the
> complete test log contains numerous additional mismatches of the same sort:
> 
> 223 54s ...	[15:33:09] [15:34:11] - output mismatch (see 223.out.bad)
>     --- 223.out	2012-12-23 14:52:52.897392805 -0500
>     +++ 223.out.bad	2013-02-06 15:34:11.750303000 -0500
>     @@ -204,47 +204,47 @@
>      SCRATCH_MNT/file-1-131072-falloc: well-aligned
>      SCRATCH_MNT/file-1-131072-write: well-aligned
>      SCRATCH_MNT/file-2-131072-falloc: well-aligned
>     -SCRATCH_MNT/file-2-131072-write: well-aligned
>     +SCRATCH_MNT/file-2-131072-write: Start block 33296 not multiple of sunit 32
>      SCRATCH_MNT/file-3-131072-falloc: well-aligned
>      SCRATCH_MNT/file-3-131072-write: well-aligned
>      ...
> 
> 
> BEGIN TEST: Ext4 4k block w/metadata_csum Fri Feb  1 16:36:54 EST 2013
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
>  091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
>  207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245
>  246 247 248 249 255 256 257 258 263 271 277 289 294
> Passed all 69 tests
> END TEST: Ext4 4k block w/metadata_csum Fri Feb  1 17:09:01 EST 2013
> 
> 
> BEGIN TEST: Ext4 4k block w/dioread_nolock Fri Feb  1 17:09:01 EST 2013
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
>  091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
>  207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245
>  246 247 248 249 255 256 257 258 263 271 277 289 294
> Passed all 69 tests
> END TEST: Ext4 4k block w/dioread_nolock Fri Feb  1 18:05:12 EST 2013
> 
> Notes:
> 
> 1) 113 produces lockdep warnings on 3.8-rc6 that I've only seen on the
> Pandaboard so far (this is the only testing anomaly on -rc6 that appears to be
> unique to it).  I've seen them on both the Pandaboard and x86-64 in past -rc's,
> and the signature has varied over time with different rc's.  The lockdep
> warning is lengthy, so I've placed it at the end of this report.
> 
> 
> BEGIN TEST: Ext4 4k block w/data=journal Fri Feb  1 18:05:32 EST 2013
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
>  091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
>  207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245
>  246 247 248 249 255 256 257 258 263 271 277 289 294
> Failures: 223
> END TEST: Ext4 4k block w/data=journal Fri Feb  1 19:01:44 EST 2013
> 
> Notes:
> 
> 1) The following message appears in the syslog when xfstest 246 is run (also
> seen on x86-64):
> 
> JBD2: Spotted dirty metadata buffer (dev = sda1, blocknr = 160256). There's a
> risk of filesystem corruption in case of system crash.
> 
> 2) This is a sample of the 223 failure output (also seen on x86-64);  the
> complete test log contains numerous additional mismatches of the same sort:
> 223 61s ...	[15:48:55] [15:50:18] - output mismatch (see 223.out.bad)
>     --- 223.out	2012-12-23 14:52:52.897392805 -0500
>     +++ 223.out.bad	2013-02-06 15:50:18.437803000 -0500
>     @@ -204,45 +204,45 @@
>      SCRATCH_MNT/file-1-131072-falloc: well-aligned
>      SCRATCH_MNT/file-1-131072-write: well-aligned
>      SCRATCH_MNT/file-2-131072-falloc: well-aligned
>     -SCRATCH_MNT/file-2-131072-write: well-aligned
>     +SCRATCH_MNT/file-2-131072-write: Start block 33296 not multiple of sunit 32
>      SCRATCH_MNT/file-3-131072-falloc: well-aligned
>      SCRATCH_MNT/file-3-131072-write: well-aligned
>      ...
> 
> 
> BEGIN TEST: Ext4 4k block w/bigalloc Fri Feb  1 19:02:10 EST 2013
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088
>  091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198
>  207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245
>  246 247 248 249 257 258 263 271 277 289 294
> Failures: 015 219 235
> END TEST: Ext4 4k block w/bigalloc Fri Feb  1 19:21:22 EST 2013
> 
> Notes:
> 
> 1) This is all of the 015 failure output (also seen on x86-64):
> 
> 015 6s ...	[17:23:07] [17:23:12] - output mismatch (see 015.out.bad)
>     --- 015.out	2012-12-23 14:52:52.530205305 -0500
>     +++ 015.out.bad	2013-02-06 17:23:12.390928000 -0500
>     @@ -4,4 +4,5 @@
>      check free space:
>      delete fill:
>      check free space:
>     -   !!! free space is in range
>     +   !!! free space has value of 0
>     +free space is NOT in range 43655.04 .. 44536.96
>      ...
> 
> Multiple bursts of messages similar to this sample appear in the syslog when
> 015 is run:
> 
> EXT4-fs (sda2): delayed block allocation failed for inode 12 at logical offset 11056 with max blocks 2048 with error -28
> EXT4-fs (sda2): This should not happen!! Data will be lost
> EXT4-fs (sda2): Total free blocks count 0
> EXT4-fs (sda2): Free/Dirty block details
> EXT4-fs (sda2): free_blocks=0
> EXT4-fs (sda2): dirty_blocks=42992
> EXT4-fs (sda2): Block reservation details
> EXT4-fs (sda2): i_reserved_data_blocks=998
> EXT4-fs (sda2): i_reserved_meta_blocks=1689
> EXT4-fs (sda2): delayed block allocation failed for inode 12 at logical offset 13105 with max blocks 2048 with error -28
> EXT4-fs (sda2): This should not happen!! Data will be lost
> 
> Occasionally (maybe 20% of the time), 015 will lead to a stall where the test
> makes no further forward progress.  This happens at the end of the test when
> a file used to consume available free space on the filesystem is deleted.
> The rm is left in the D state, a flusher thread continues to run and
> accumulate time, and I/O is continuously written to the storage device at a
> slow rate.
> 
> 
> 2) This is all of the 219 failure output (also seen on x86-64):
> 
> --- 219.out	2013-02-01 12:46:06.672838718 -0500
> +++ 219.out.bad	2013-02-07 12:36:14.734678000 -0500
> @@ -16,7 +16,7 @@
>    Size: 49152        Filetype: Regular File
>    File: "SCRATCH_MNT/mmap"
>    Size: 49152        Filetype: Regular File
> -Usage OK (type=u)
> +Too many blocks used (type=u)
>  
>  ### test group accounting
>  
> @@ -34,4 +34,4 @@
>    Size: 49152        Filetype: Regular File
>    File: "SCRATCH_MNT/mmap"
>    Size: 49152        Filetype: Regular File
> -Usage OK (type=g)
> +Too many blocks used (type=g)
> 
> 
> 3) This is all of the 235 failure output (also seen on x86-64):
> 
> --- 235.out	2012-12-23 14:52:52.905205305 -0500
> +++ 235.out.bad	2013-02-07 12:40:53.750303000 -0500
> @@ -21,7 +21,7 @@
>                          Block limits                File limits
>  User            used    soft    hard  grace    used  soft  hard  grace
>  ----------------------------------------------------------------------
> -fsgqa     --       8       0       0              1     0     0       
> +fsgqa     --      64       0       0              1     0     0       
>  
>  
>  *** Report for group quotas on device SCRATCH_DEV
> @@ -29,6 +29,6 @@
>                          Block limits                File limits
>  Group           used    soft    hard  grace    used  soft  hard  grace
>  ----------------------------------------------------------------------
> -fsgqa     --       8       0       0              1     0     0       
> +fsgqa     --      64       0       0              1     0     0       
> 
> 
> 4) When 225 is run, one or more instances of the following warning will be
> posted to the syslog (also on x86-64):
> 
> WARNING: at fs/ext4/inode.c:362 ext4_da_update_reserve_space+0x214/0x280()
> Modules linked in:
> [<c0016d18>] (unwind_backtrace+0x0/0x104) from [<c059e450>] (dump_stack+0x20/0x24)
> [<c059e450>] (dump_stack+0x20/0x24) from [<c0037c68>] (warn_slowpath_common+0x5c/0x74)
> [<c0037c68>] (warn_slowpath_common+0x5c/0x74) from [<c0037cac>] (warn_slowpath_null+0x2c/0x34)
> [<c0037cac>] (warn_slowpath_null+0x2c/0x34) from [<c01af4f4>] (ext4_da_update_reserve_space+0x214/0x280)
> [<c01af4f4>] (ext4_da_update_reserve_space+0x214/0x280) from [<c01dc928>] (ext4_ext_map_blocks+0xc10/0x153c)
> [<c01dc928>] (ext4_ext_map_blocks+0xc10/0x153c) from [<c01af624>] (ext4_map_blocks+0xc4/0x230)
> [<c01af624>] (ext4_map_blocks+0xc4/0x230) from [<c01b3c6c>] (mpage_da_map_and_submit+0xa0/0x598)
> [<c01b3c6c>] (mpage_da_map_and_submit+0xa0/0x598) from [<c01b494c>] (ext4_da_writepages+0x2d8/0x564)
> [<c01b494c>] (ext4_da_writepages+0x2d8/0x564) from [<c00e38cc>] (do_writepages+0x34/0x48)
> [<c00e38cc>] (do_writepages+0x34/0x48) from [<c00d9b64>] (__filemap_fdatawrite_range+0x5c/0x64)
> [<c00d9b64>] (__filemap_fdatawrite_range+0x5c/0x64) from [<c00d9ba4>] (filemap_fdatawrite+0x38/0x40)
> [<c00d9ba4>] (filemap_fdatawrite+0x38/0x40) from [<c00d9bdc>] (filemap_write_and_wait+0x30/0x54)
> [<c00d9bdc>] (filemap_write_and_wait+0x30/0x54) from [<c0128864>] (do_vfs_ioctl+0x498/0x5d8)
> [<c0128864>] (do_vfs_ioctl+0x498/0x5d8) from [<c0128a18>] (sys_ioctl+0x74/0x94)
> [<c0128a18>] (sys_ioctl+0x74/0x94) from [<c000e3c0>] (ret_fast_syscall+0x0/0x3c)
> 
> 
> 
> Here's the lockdep report for xfstest 113 run in the dioread_nolock scenario
> as mentioned above (the taint is due to an unrelated warning from the clk
> subsystem believed to be unique to 3.8 on Pandaboards/OMAP):
> 
> [ INFO: possible circular locking dependency detected ]
> 3.8.0-rc6 #1 Tainted: G        W   
> -------------------------------------------------------
> aio-stress/8597 is trying to acquire lock:
>  (&mm->mmap_sem){++++++}, at: [<c00f1928>] get_user_pages_fast+0x48/0x88
> 
> but task is already holding lock:
>  (&ei->i_data_sem){++++.+}, at: [<c01ae2a8>] ext4_direct_IO+0x3d4/0x450
>  
> which lock already depends on the new lock.
>  
>  
> the existing dependency chain (in reverse order) is:
>  
> -> #1 (&ei->i_data_sem){++++.+}:
>        [<c008c190>] __lock_acquire+0x162c/0x1b04
>        [<c008cb70>] lock_acquire+0x9c/0x114
>        [<c05a4f78>] down_read+0x40/0x50
>        [<c01af6dc>] ext4_map_blocks+0x17c/0x230
>        [<c01b1b6c>] _ext4_get_block+0x84/0x164
>        [<c01b1d2c>] ext4_get_block+0x34/0x3c
>        [<c0153bfc>] do_mpage_readpage+0x4d8/0x754
>        [<c0153f50>] mpage_readpages+0xd8/0x134
>        [<c01aedf4>] ext4_readpages+0x4c/0x54
>        [<c00e3cbc>] __do_page_cache_readahead+0x1e8/0x2b0
>        [<c00e408c>] ra_submit+0x38/0x40
>        [<c00db0d4>] filemap_fault+0x3b4/0x490
>        [<c00fb220>] __do_fault+0x78/0x4a8
>        [<c00fe36c>] handle_pte_fault+0x80/0x6f8
>        [<c00fea8c>] handle_mm_fault+0xa8/0xd8
>        [<c05a91bc>] do_page_fault+0x294/0x3b4
>        [<c05a9384>] do_translation_fault+0xa8/0xb0
>        [<c00083f4>] do_DataAbort+0x44/0xa8
>        [<c05a751c>] __dabt_svc+0x3c/0x60
>        [<c02d17c0>] __clear_user_std+0x34/0x64
>  
> -> #0 (&mm->mmap_sem){++++++}:
>        [<c059fa20>] print_circular_bug+0x78/0x2c8
>        [<c008c59c>] __lock_acquire+0x1a38/0x1b04
>        [<c008cb70>] lock_acquire+0x9c/0x114
>        [<c05a4f78>] down_read+0x40/0x50
>        [<c00f1928>] get_user_pages_fast+0x48/0x88
>        [<c0151110>] __blockdev_direct_IO+0x1be4/0x3840
>        [<c01ae1ac>] ext4_direct_IO+0x2d8/0x450
>        [<c00d9db0>] generic_file_direct_write+0xf4/0x20c
>        [<c00da23c>] __generic_file_aio_write+0x374/0x454
>        [<c01aa49c>] ext4_file_write+0x2ac/0x4d0
>        [<c015cf18>] aio_rw_vect_retry+0x78/0x1ac
>        [<c015d858>] aio_run_iocb+0x64/0x14c
>        [<c015ed10>] do_io_submit+0x574/0x8ec
>        [<c015f0a4>] sys_io_submit+0x1c/0x20
>        [<c000e3c0>] ret_fast_syscall+0x0/0x3c
>  
> other info that might help us debug this:
>  
>  Possible unsafe locking scenario:
>  
>        CPU0                    CPU1
>        ----                    ----
>   lock(&ei->i_data_sem);
>                                lock(&mm->mmap_sem);
>                                lock(&ei->i_data_sem);
>   lock(&mm->mmap_sem);
>  
>  *** DEADLOCK ***
>  
> 1 lock held by aio-stress/8597:
>  #0:  (&ei->i_data_sem){++++.+}, at: [<c01ae2a8>] ext4_direct_IO+0x3d4/0x450
>  
> stack backtrace:
> [<c0016d18>] (unwind_backtrace+0x0/0x104) from [<c059e450>] (dump_stack+0x20/0x24)
> [<c059e450>] (dump_stack+0x20/0x24) from [<c059fc24>] (print_circular_bug+0x27c/0x2c8)
> [<c059fc24>] (print_circular_bug+0x27c/0x2c8) from [<c008c59c>] (__lock_acquire+0x1a38/0x1b04)
> [<c008c59c>] (__lock_acquire+0x1a38/0x1b04) from [<c008cb70>] (lock_acquire+0x9c/0x114)
> [<c008cb70>] (lock_acquire+0x9c/0x114) from [<c05a4f78>] (down_read+0x40/0x50)
> [<c05a4f78>] (down_read+0x40/0x50) from [<c00f1928>] (get_user_pages_fast+0x48/0x88)
> [<c00f1928>] (get_user_pages_fast+0x48/0x88) from [<c0151110>] (__blockdev_direct_IO+0x1be4/0x3840)
> [<c0151110>] (__blockdev_direct_IO+0x1be4/0x3840) from [<c01ae1ac>] (ext4_direct_IO+0x2d8/0x450)
> [<c01ae1ac>] (ext4_direct_IO+0x2d8/0x450) from [<c00d9db0>] (generic_file_direct_write+0xf4/0x20c)
> [<c00d9db0>] (generic_file_direct_write+0xf4/0x20c) from [<c00da23c>] (__generic_file_aio_write+0x374/0x454)
> [<c00da23c>] (__generic_file_aio_write+0x374/0x454) from [<c01aa49c>] (ext4_file_write+0x2ac/0x4d0)
> [<c01aa49c>] (ext4_file_write+0x2ac/0x4d0) from [<c015cf18>] (aio_rw_vect_retry+0x78/0x1ac)
> [<c015cf18>] (aio_rw_vect_retry+0x78/0x1ac) from [<c015d858>] (aio_run_iocb+0x64/0x14c)
> [<c015d858>] (aio_run_iocb+0x64/0x14c) from [<c015ed10>] (do_io_submit+0x574/0x8ec)
> [<c015ed10>] (do_io_submit+0x574/0x8ec) from [<c015f0a4>] (sys_io_submit+0x1c/0x20)
> [<c015f0a4>] (sys_io_submit+0x1c/0x20) from [<c000e3c0>] (ret_fast_syscall+0x0/0x3c)
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Theodore Ts'o - Feb. 11, 2013, 1:35 a.m.
Here's the results of my xfstests run using "auto" on the kernel which
includes all of the ext4 patches that were merged before 3.8-rc2.  (It
doesn't include three fixup ext4 patches which got merged before
3.8-rc2 and 3.8-rc3.)  My goal is to make sure the patches I submit to
Linus during the next merge window has no regressions compared to this
xfstests run.

						- Ted

[    0.000000] Linux version 3.8.0-rc1-00048-g7c8b4e6 (tytso@closure) (gcc version 4.7.1 (Debian 4.7.1-7) ) #668 SMP Sun Dec 30 13:27:49 EST 2012
FSTESTCFG is "all"
FSTESTSET is "-g auto"
BEGIN TEST: Ext4 4k block Sun Dec 30 13:30:15 EST 2012
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 068 069 070 074 075 076 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127 128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210 211 212 213 214 215 219 221 223 224 225 226 228 230 231 232 233 234 235 236 237 239 240 243 245 246 247 248 249 255 256 257 258 263 269 270 271 272 273 274 275 277 280 285
Failures: 274 280
END TEST: Ext4 4k block Sun Dec 30 15:13:45 EST 2012
BEGIN TEST: Ext4 4k block w/nodelalloc, no flex_bg, and no extents Sun Dec 30 15:13:53 EST 2012
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 068 069 070 074 075 076 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127 128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210 211 212 215 219 221 224 225 226 230 231 232 233 234 235 236 237 239 240 245 246 247 248 249 257 258 263 269 270 271 272 273 275 277 280 285
Failures: 280
END TEST: Ext4 4k block w/nodelalloc, no flex_bg, and no extents Sun Dec 30 16:57:12 EST 2012
BEGIN TEST: Ext4 4k block w/ no journal Sun Dec 30 16:57:14 EST 2012
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 074 075 076 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127 128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210 211 212 213 214 215 219 221 223 224 225 226 228 230 231 232 233 234 235 236 237 239 240 243 245 246 247 248 249 255 256 257 258 263 269 270 271 272 273 274 275 277 285
Failures: 274
END TEST: Ext4 4k block w/ no journal Sun Dec 30 17:40:08 EST 2012
BEGIN TEST: Ext4 1k block Sun Dec 30 17:40:13 EST 2012
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 068 069 070 074 075 076 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127 128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210 211 212 213 214 215 219 221 223 224 225 226 228 230 231 232 233 234 235 236 237 239 240 243 245 246 247 248 249 255 256 257 258 263 269 270 271 272 273 274 275 277 280 285
Failures: 274 280
END TEST: Ext4 1k block Sun Dec 30 21:04:02 EST 2012
BEGIN TEST: Ext4 4k block w/nodelalloc and no flex_bg Sun Dec 30 21:04:05 EST 2012
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 068 069 070 074 075 076 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127 128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210 211 212 213 214 215 219 221 223 224 225 226 228 230 231 232 233 234 235 236 237 239 240 243 245 246 247 248 249 255 256 257 258 263 269 270 271 272 273 274 275 277 280 285
Failures: 223 270 274 280
END TEST: Ext4 4k block w/nodelalloc and no flex_bg Sun Dec 30 22:38:40 EST 2012
BEGIN TEST: Ext4 4k block w/metadata_csum Sun Dec 30 22:38:43 EST 2012
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 068 069 070 074 075 076 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127 128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210 211 212 213 214 215 219 221 223 224 225 226 228 230 231 232 233 234 235 236 237 239 240 243 245 246 247 248 249 255 256 257 258 263 269 270 271 272 273 274 275 277 280 285
Failures: 274 280
END TEST: Ext4 4k block w/metadata_csum Mon Dec 31 00:19:13 EST 2012
BEGIN TEST: Ext4 4k block w/dioread_nolock Mon Dec 31 00:19:13 EST 2012
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 068 069 070 074 075 076 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127 128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210 211 212 213 214 215 219 221 223 224 225 226 228 230 231 232 233 234 235 236 237 239 240 243 245 246 247 248 249 255 256 257 258 263 269 270 271 272 273 274 275 277 280 285
Failures: 274 280
END TEST: Ext4 4k block w/dioread_nolock Mon Dec 31 02:07:29 EST 2012
BEGIN TEST: Ext4 4k block w/data=journal Mon Dec 31 02:07:34 EST 2012
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 068 069 070 074 075 076 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127 128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210 211 212 213 214 215 219 221 223 224 225 226 228 230 231 232 233 234 235 236 237 239 240 243 245 246 247 248 249 255 256 257 258 263 269 270 271 272 273 274 275 277 280 285
Failures: 223 274 280
END TEST: Ext4 4k block w/data=journal Mon Dec 31 03:54:25 EST 2012
BEGIN TEST: Ext4 4k block w/bigalloc Mon Dec 31 03:54:32 EST 2012

<end of test; as of 3.8-rc2, with bigalloc, the test run hangs with a
huge number of errors spewed out to the console during xfstest #15.
See the attached (compressed) log for more details>
Theodore Ts'o - Feb. 11, 2013, 2:08 a.m.
Here is the latest results using "quick" on the dev branch.  I'm happy
to say that there are no regressions amongst the set of tests found in
the quick group, although this is because the dev branch does not
include three patches which I've excluded since they cause a
regression with dioread_nolock.

					- Ted

[    0.000000] Linux version 3.8.0-rc3-00060-gec333eb (tytso@closure) (gcc version 4.7.2 (Debian 4.7.2-4) ) #844 SMP Sun Feb 10 15:47:42 EST 2013
FSTESTCFG is "all"
FSTESTSET is "-g quick"
BEGIN TEST: Ext4 4k block Sun Feb 10 15:50:03 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198 207 210 211 212 214 215 219 221 223 225 228 230 235 236 237 240 243 245 246 247 248 249 255 256 257 258 263 271 277 289
Passed all 67 tests
END TEST: Ext4 4k block Sun Feb 10 16:29:39 EST 2013
BEGIN TEST: Ext4 4k block w/nodelalloc, no flex_bg, and no extents Sun Feb 10 16:29:53 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198 207 210 211 212 215 219 221 225 230 235 236 237 240 245 246 247 248 249 255 256 257 258 263 271 277 289
Failures: 255
END TEST: Ext4 4k block w/nodelalloc, no flex_bg, and no extents Sun Feb 10 16:53:31 EST 2013
BEGIN TEST: Ext4 4k block w/ no journal Sun Feb 10 16:53:33 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198 207 210 211 212 214 215 219 221 223 225 228 230 235 236 237 240 243 245 246 247 248 249 255 256 257 258 263 271 277 289
Passed all 67 tests
END TEST: Ext4 4k block w/ no journal Sun Feb 10 17:23:55 EST 2013
BEGIN TEST: Ext4 1k block Sun Feb 10 17:24:08 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198 207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245 246 247 248 249 255 256 257 258 263 271 277 289
Passed all 68 tests
END TEST: Ext4 1k block Sun Feb 10 18:25:39 EST 2013
BEGIN TEST: Ext4 4k block w/nodelalloc and no flex_bg Sun Feb 10 18:25:43 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198 207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245 246 247 248 249 255 256 257 258 263 271 277 289
Failures: 223
END TEST: Ext4 4k block w/nodelalloc and no flex_bg Sun Feb 10 18:47:15 EST 2013
BEGIN TEST: Ext4 4k block w/metadata_csum Sun Feb 10 18:47:18 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198 207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245 246 247 248 249 255 256 257 258 263 271 277 289
Passed all 68 tests
END TEST: Ext4 4k block w/metadata_csum Sun Feb 10 19:09:48 EST 2013
BEGIN TEST: Ext4 4k block w/dioread_nolock Sun Feb 10 19:09:48 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198 207 210 211 212 214 215 219 221 223 225 228 230 235 236 237 240 243 245 246 247 248 249 255 256 257 258 263 271 277 289
Passed all 67 tests
END TEST: Ext4 4k block w/dioread_nolock Sun Feb 10 19:50:21 EST 2013
BEGIN TEST: Ext4 4k block w/data=journal Sun Feb 10 19:50:33 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198 207 210 211 212 214 215 219 221 223 225 228 230 235 236 237 240 243 245 246 247 248 249 255 256 257 258 263 271 277 289
Failures: 223
END TEST: Ext4 4k block w/data=journal Sun Feb 10 20:26:21 EST 2013
BEGIN TEST: Ext4 4k block w/bigalloc Sun Feb 10 20:26:35 EST 2013
Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 075 076 079 088 091 105 112 113 117 120 123 124 126 128 129 130 131 135 141 169 184 193 198 207 210 211 212 213 214 215 219 221 223 225 228 230 235 236 237 240 243 245 246 247 248 249 257 258 263 271 277 289
Failures: 219 235
END TEST: Ext4 4k block w/bigalloc Sun Feb 10 20:48:06 EST 2013
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Theodore Ts'o - Feb. 11, 2013, 3:24 a.m.
On Sun, Feb 10, 2013 at 09:08:36PM -0500, Theodore Ts'o wrote:
> BEGIN TEST: Ext4 4k block w/nodelalloc, no flex_bg, and no extents Sun Feb 10 16:29:53 EST 2013
> Failures: 255

Whoops, I spoke too soon.  This looks like a regression, which needs
investigation...

					- Ted
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Zheng Liu - Feb. 11, 2013, 3:36 a.m.
发自我的 iPad

在 2013-2-11,上午11:24,Theodore Ts'o <tytso@mit.edu> 写道:

> On Sun, Feb 10, 2013 at 09:08:36PM -0500, Theodore Ts'o wrote:
>> BEGIN TEST: Ext4 4k block w/nodelalloc, no flex_bg, and no extents Sun Feb 10 16:29:53 EST 2013
>> Failures: 255
> 
> Whoops, I spoke too soon.  This looks like a regression, which needs
> investigation...

Hi Ted,

Sorry, I haven't xfstests code in my hand, but I remember that #255 is used to test hole punching feature.  So I suspect that no extents is the root cause because my patch set of indirect-based hole punching will cause it failed.

Regards,
                                                - Zheng

> 
>                    - Ted
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Theodore Ts'o - Feb. 11, 2013, 3:48 a.m.
On Mon, Feb 11, 2013 at 11:36:17AM +0800, gnehzuil.liu wrote:
> 
> Sorry, I haven't xfstests code in my hand, but I remember that #255
> is used to test hole punching feature.  So I suspect that no extents
> is the root cause because my patch set of indirect-based hole
> punching will cause it failed.

Ah, thanks for pointing that out.  I'll take a closer look tomorrow,
but I'm sure you're correct.

I hope you've been enojoying a good Chinese New Year's vacation;
thanks for checking in during your holiday.

Cheers,

						- Ted
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Jan Kara - Feb. 11, 2013, 3:29 p.m.
On Thu 07-02-13 17:05:36, Eric Whitney wrote:
> Here's the lockdep report for xfstest 113 run in the dioread_nolock scenario
> as mentioned above (the taint is due to an unrelated warning from the clk
> subsystem believed to be unique to 3.8 on Pandaboards/OMAP):
  Thanks for the report!

> [ INFO: possible circular locking dependency detected ]
> 3.8.0-rc6 #1 Tainted: G        W   
> -------------------------------------------------------
> aio-stress/8597 is trying to acquire lock:
>  (&mm->mmap_sem){++++++}, at: [<c00f1928>] get_user_pages_fast+0x48/0x88
> 
> but task is already holding lock:
>  (&ei->i_data_sem){++++.+}, at: [<c01ae2a8>] ext4_direct_IO+0x3d4/0x450
>  
> which lock already depends on the new lock.
  Drat, this looks like a real deadlock possibility. I didn't realize this
when reviewing the dioread_nolock patches but i_data_sem ranks below
mmap_sem because we need to grab it in page fault path to map blocks. So we
cannot acquire it in ext4_ext_direct_IO() as it calls
__blockdev_direct_IO() which gets mmap_sem to fault in user-provided pages.
That will be tough to fix... Luckily, the deadlock isn't easy to hit in
practice as it requires mmap and DIO to happen on the same file (already
unlikely) and furthermore three processes, two of them sharing mm, to race
in the right way:

Thread 1		Thread 2	Thread 3
down_read(mmap_sem);
			mmap()
...			  down_write(mmap_sem); [blocked]
  ext4_page_mkwrite();
					ext4_ext_direct_IO()
					  down_read(i_data_sem);
					  ...
					  __blockdev_direct_IO();
					    get_user_pages_fast();
					      down_read(mmap_sem); [blocked]
    ...
    ext4_da_get_block_prep();
      down_write(i_data_sem); [blocked]


								Honza
Eric Sandeen - Feb. 11, 2013, 3:56 p.m.
On 2/10/13 7:35 PM, Theodore Ts'o wrote:
> Here's the results of my xfstests run using "auto" on the kernel which
> includes all of the ext4 patches that were merged before 3.8-rc2.  (It
> doesn't include three fixup ext4 patches which got merged before
> 3.8-rc2 and 3.8-rc3.)  My goal is to make sure the patches I submit to
> Linus during the next merge window has no regressions compared to this
> xfstests run.

So the superset of failing tests seems to be:

223 270 274 280

223: file alignment tests (mkfs w/ stripe geom, check for allocation on stripe boundary)
- not critical, always been flaky AFAIK

270: stress fs at ENOSPC, check fs & quota consistency
- this one is a little worrisome, only failing on nodelalloc+noflexbg,
  but maybe that means "failing when running an ext3 filesystem?"

274: prealloc reservation test
- this fails because it's a diabolical test, with reservation into badly
  fragmented freespace, and there is not sufficient space reserved for
  metadata, so writes into prealloc'd space fails, breaking the fallocate
  guarantees.

280: Test quota vs. suspend/freeze deadlock
- If this is failing it's a regression, supposedly 
  dcdbed85 quota: Fix deadlock with suspend and quotas
  fixed this once already.

-Eric

> 						- Ted
> 
> [    0.000000] Linux version 3.8.0-rc1-00048-g7c8b4e6 (tytso@closure) (gcc version 4.7.1 (Debian 4.7.1-7) ) #668 SMP Sun Dec 30 13:27:49 EST 2012
> FSTESTCFG is "all"
> FSTESTSET is "-g auto"
> BEGIN TEST: Ext4 4k block Sun Dec 30 13:30:15 EST 2012
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 068 069 070 074 075 076 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127 128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210 211 212 213 214 215 219 221 223 224 225 226 228 230 231 232 233 234 235 236 237 239 240 243 245 246 247 248 249 255 256 257 258 263 269 270 271 272 273 274 275 277 280 285
> Failures: 274 280
> END TEST: Ext4 4k block Sun Dec 30 15:13:45 EST 2012
> BEGIN TEST: Ext4 4k block w/nodelalloc, no flex_bg, and no extents Sun Dec 30 15:13:53 EST 2012
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 068 069 070 074 075 076 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127 128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210 211 212 215 219 221 224 225 226 230 231 232 233 234 235 236 237 239 240 245 246 247 248 249 257 258 263 269 270 271 272 273 275 277 280 285
> Failures: 280
> END TEST: Ext4 4k block w/nodelalloc, no flex_bg, and no extents Sun Dec 30 16:57:12 EST 2012
> BEGIN TEST: Ext4 4k block w/ no journal Sun Dec 30 16:57:14 EST 2012
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 069 070 074 075 076 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127 128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210 211 212 213 214 215 219 221 223 224 225 226 228 230 231 232 233 234 235 236 237 239 240 243 245 246 247 248 249 255 256 257 258 263 269 270 271 272 273 274 275 277 285
> Failures: 274
> END TEST: Ext4 4k block w/ no journal Sun Dec 30 17:40:08 EST 2012
> BEGIN TEST: Ext4 1k block Sun Dec 30 17:40:13 EST 2012
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 068 069 070 074 075 076 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127 128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210 211 212 213 214 215 219 221 223 224 225 226 228 230 231 232 233 234 235 236 237 239 240 243 245 246 247 248 249 255 256 257 258 263 269 270 271 272 273 274 275 277 280 285
> Failures: 274 280
> END TEST: Ext4 1k block Sun Dec 30 21:04:02 EST 2012
> BEGIN TEST: Ext4 4k block w/nodelalloc and no flex_bg Sun Dec 30 21:04:05 EST 2012
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 068 069 070 074 075 076 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127 128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210 211 212 213 214 215 219 221 223 224 225 226 228 230 231 232 233 234 235 236 237 239 240 243 245 246 247 248 249 255 256 257 258 263 269 270 271 272 273 274 275 277 280 285
> Failures: 223 270 274 280
> END TEST: Ext4 4k block w/nodelalloc and no flex_bg Sun Dec 30 22:38:40 EST 2012
> BEGIN TEST: Ext4 4k block w/metadata_csum Sun Dec 30 22:38:43 EST 2012
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 068 069 070 074 075 076 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127 128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210 211 212 213 214 215 219 221 223 224 225 226 228 230 231 232 233 234 235 236 237 239 240 243 245 246 247 248 249 255 256 257 258 263 269 270 271 272 273 274 275 277 280 285
> Failures: 274 280
> END TEST: Ext4 4k block w/metadata_csum Mon Dec 31 00:19:13 EST 2012
> BEGIN TEST: Ext4 4k block w/dioread_nolock Mon Dec 31 00:19:13 EST 2012
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 068 069 070 074 075 076 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127 128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210 211 212 213 214 215 219 221 223 224 225 226 228 230 231 232 233 234 235 236 237 239 240 243 245 246 247 248 249 255 256 257 258 263 269 270 271 272 273 274 275 277 280 285
> Failures: 274 280
> END TEST: Ext4 4k block w/dioread_nolock Mon Dec 31 02:07:29 EST 2012
> BEGIN TEST: Ext4 4k block w/data=journal Mon Dec 31 02:07:34 EST 2012
> Ran: 001 002 005 006 007 011 013 014 015 020 053 062 068 069 070 074 075 076 079 083 088 089 091 100 105 112 113 117 120 123 124 125 126 127 128 129 130 131 132 133 135 141 169 184 192 193 198 204 207 208 209 210 211 212 213 214 215 219 221 223 224 225 226 228 230 231 232 233 234 235 236 237 239 240 243 245 246 247 248 249 255 256 257 258 263 269 270 271 272 273 274 275 277 280 285
> Failures: 223 274 280
> END TEST: Ext4 4k block w/data=journal Mon Dec 31 03:54:25 EST 2012
> BEGIN TEST: Ext4 4k block w/bigalloc Mon Dec 31 03:54:32 EST 2012
> 
> <end of test; as of 3.8-rc2, with bigalloc, the test run hangs with a
> huge number of errors spewed out to the console during xfstest #15.
> See the attached (compressed) log for more details>
> 

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Theodore Ts'o - Feb. 11, 2013, 9:16 p.m.
On Mon, Feb 11, 2013 at 09:56:12AM -0600, Eric Sandeen wrote:
> 
> So the superset of failing tests seems to be:
> 
> 223 270 274 280
> 

Here is the results of running these failing tests with the dev ranch.
There is a regression; test 270 is failing with a kernel regression
with dioread_nolock.

					- Ted

[    0.000000] Linux version 3.8.0-rc3-00060-g17f71a7 (tytso@closure) (gcc version 4.7.2 (Debian 4.7.2-4) ) #848 SMP Mon Feb 11 15:27:06 EST 2013
FSTESTCFG is "all"
FSTESTSET is "223 270 274 280"
BEGIN TEST: Ext4 4k block Mon Feb 11 15:28:24 EST 2013
Ran: 223 270 274 280
Failures: 274 280
END TEST: Ext4 4k block Mon Feb 11 15:31:26 EST 2013
BEGIN TEST: Ext4 4k block w/nodelalloc, no flex_bg, and no extents Mon Feb 11 15:31:42 EST 2013
Ran: 270 280
Failures: 270 280
END TEST: Ext4 4k block w/nodelalloc, no flex_bg, and no extents Mon Feb 11 15:38:27 EST 2013
BEGIN TEST: Ext4 4k block w/ no journal Mon Feb 11 15:38:29 EST 2013
Ran: 223 270 274
Failures: 274
END TEST: Ext4 4k block w/ no journal Mon Feb 11 15:41:11 EST 2013
BEGIN TEST: Ext4 1k block Mon Feb 11 15:41:24 EST 2013
Ran: 223 270 274 280
Failures: 274 280
END TEST: Ext4 1k block Mon Feb 11 15:43:31 EST 2013
BEGIN TEST: Ext4 4k block w/nodelalloc and no flex_bg Mon Feb 11 15:43:34 EST 2013
Ran: 223 270 274 280
Failures: 223 270 274 280
END TEST: Ext4 4k block w/nodelalloc and no flex_bg Mon Feb 11 15:45:41 EST 2013
BEGIN TEST: Ext4 4k block w/metadata_csum Mon Feb 11 15:45:43 EST 2013
Ran: 223 270 274 280
Failures: 274 280
END TEST: Ext4 4k block w/metadata_csum Mon Feb 11 15:47:40 EST 2013
BEGIN TEST: Ext4 4k block w/dioread_nolock Mon Feb 11 15:47:40 EST 2013

FAILURE: kernel crash while running test 270:
270 72s ...[ 1223.638696] BUG: unable to handle kernel NULL pointer dereference at   (null)
[ 1223.641433] IP: [<c016fd26>] cwq_activate_delayed_work+0x1a/0x33
[ 1223.641433] *pdpt = 0000000008f17001 *pde = 0000000000000000 
[ 1223.641433] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
[ 1223.641433] Modules linked in:
[ 1223.641433] Pid: 662, comm: kworker/u:2 Not tainted 3.8.0-rc3-00060-g17f71a7 #848 Bochs Bochs
[ 1223.641433] EIP: 0060:[<c016fd26>] EFLAGS: 00010046 CPU: 1
[ 1223.641433] EIP is at cwq_activate_delayed_work+0x1a/0x33
[ 1223.641433] EAX: 00000000 EBX: def7ddf0 ECX: 00001200 EDX: 00001200
[ 1223.641433] ESI: 00000000 EDI: 00000000 EBP: deb31e94 ESP: deb31e8c
[ 1223.641433]  DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 1223.641433] CR0: 8005003b CR2: 00000000 CR3: 08f16000 CR4: 000006f0
[ 1223.641433] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 1223.641433] DR6: ffff0ff0 DR7: 00000400
[ 1223.641433] Process kworker/u:2 (pid: 662, ti=deb30000 task=deafc2a0 task.ti=deb30000)
[ 1223.641433] Stack:
[ 1223.641433]  de548200 00000006 deb31ea4 c016fd74 def7fe70 00000006 deb31efc c01712c9
[ 1223.641433]  deafc710 de57ce80 de57ce80 0019a806 c0e4a3b8 c027aa0d c0e4a388 de548200
[ 1223.641433]  c0e4a2c0 c0e4a3f0 de831940 c139c5e8 c0f2ea18 00000000 c0a768d9 00000000
[ 1223.641433] Call Trace:
[ 1223.641433]  [<c016fd74>] cwq_dec_nr_in_flight+0x35/0x69
[ 1223.641433]  [<c01712c9>] process_one_work+0x2ce/0x330
[ 1223.641433]  [<c027aa0d>] ? ext4_end_bio+0x1ce/0x1ce
[ 1223.641433]  [<c01715ae>] worker_thread+0xff/0x18d
[ 1223.641433]  [<c01714af>] ? rescuer_thread+0x15e/0x15e
[ 1223.641433]  [<c0174d7f>] kthread+0x79/0x7e
[ 1223.641433]  [<c019c55a>] ? trace_hardirqs_on+0xb/0xd
[ 1223.641433]  [<c0811937>] ret_from_kernel_thread+0x1b/0x28
[ 1223.641433]  [<c0174d06>] ? __kthread_parkme+0x59/0x59
[ 1223.641433] Code: c6 04 89 75 f0 75 c7 eb e6 89 19 58 5b 5e 5f 5d c3 55 89 e5 56 53 3e 8d 74 26 00 89 c3 e8 d1 f2 ff ff 89 c6 89 d8 e8 17 f9 ff ff <8b> 16 31 c9 89 d8 83 c2 08 e8 81 ff ff ff 0f ba 33 01 ff 46 4c
[ 1223.641433] EIP: [<c016fd26>] cwq_activate_delayed_work+0x1a/0x33 SS:ESP 0068:deb31e8c
[ 1223.641433] CR2: 0000000000000000
[ 1223.641433] ---[ end trace 5257cdc8eade6bdb ]---


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Patch

--- 219.out	2013-02-01 12:46:06.672838718 -0500
+++ 219.out.bad	2013-02-07 12:36:14.734678000 -0500
@@ -16,7 +16,7 @@ 
   Size: 49152        Filetype: Regular File
   File: "SCRATCH_MNT/mmap"
   Size: 49152        Filetype: Regular File
-Usage OK (type=u)
+Too many blocks used (type=u)
 
 ### test group accounting
 
@@ -34,4 +34,4 @@ 
   Size: 49152        Filetype: Regular File
   File: "SCRATCH_MNT/mmap"
   Size: 49152        Filetype: Regular File
-Usage OK (type=g)
+Too many blocks used (type=g)


3) This is all of the 235 failure output (also seen on x86-64):

--- 235.out	2012-12-23 14:52:52.905205305 -0500
+++ 235.out.bad	2013-02-07 12:40:53.750303000 -0500
@@ -21,7 +21,7 @@ 
                         Block limits                File limits
 User            used    soft    hard  grace    used  soft  hard  grace
 ----------------------------------------------------------------------
-fsgqa     --       8       0       0              1     0     0       
+fsgqa     --      64       0       0              1     0     0       
 
 
 *** Report for group quotas on device SCRATCH_DEV
@@ -29,6 +29,6 @@ 
                         Block limits                File limits
 Group           used    soft    hard  grace    used  soft  hard  grace
 ----------------------------------------------------------------------
-fsgqa     --       8       0       0              1     0     0       
+fsgqa     --      64       0       0              1     0     0