From patchwork Wed Oct 28 15:42:11 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Xi X-Patchwork-Id: 537434 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 21ED2140D24 for ; Thu, 29 Oct 2015 02:43:49 +1100 (AEDT) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b=TgLSA09s; dkim-atps=neutral Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966195AbbJ1Pm3 (ORCPT ); Wed, 28 Oct 2015 11:42:29 -0400 Received: from mail-pa0-f49.google.com ([209.85.220.49]:35510 "EHLO mail-pa0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755964AbbJ1Pm1 (ORCPT ); Wed, 28 Oct 2015 11:42:27 -0400 Received: by pasz6 with SMTP id z6so10450131pas.2 for ; Wed, 28 Oct 2015 08:42:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:subject:date:message-id:in-reply-to:references; bh=ZcNhMeXlhntJqWR6JjUJ/b9lGShcd4Ior5aWfFBRY8I=; b=TgLSA09swsHwECEp4OTcycg3WOM98b9xZ7VcLdSoCNP90jW/GAwCY0Jiu11jcJgdXn xO39VkComv9tPP/ReiAFlPlClKFwtLjaT2MyQuveHOsw9zFtjETcYAjvfDkyMaz5AI+z wFkfCGHx6eefoyetHjB4QJifjHFQiC0/Wd6aMZ8vzJRZAA8748+JGJ2IrprCadU39rUs JjvSIAzs+olQgLJx/QedlpIXbndsuUiIDJdD0rzCRF21FzIn9GTE7xFv4nqQkwUpuovc L0wivy1IXeIyM6ek/MywllRJxP6KLKgbxRv7qBKlnQMORsuZIMpyyT3wZ63Sebw8mWsM jDIg== X-Received: by 10.67.1.34 with SMTP id bd2mr34041542pad.45.1446046947035; Wed, 28 Oct 2015 08:42:27 -0700 (PDT) Received: from localhost.localdomain (fs276ec80e.tkyc203.ap.nuro.jp. [39.110.200.14]) by smtp.gmail.com with ESMTPSA id pj10sm46130467pbc.59.2015.10.28.08.42.25 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 28 Oct 2015 08:42:26 -0700 (PDT) From: Li Xi X-Google-Original-From: Li Xi To: linux-ext4@vger.kernel.org, tytso@mit.edu, adilger@dilger.ca, jack@suse.cz, viro@zeniv.linux.org.uk, hch@infradead.org, dmonakhov@openvz.org Subject: [v1 2/4] Add project quota support Date: Thu, 29 Oct 2015 00:42:11 +0900 Message-Id: <1446046933-26571-3-git-send-email-lixi@ddn.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1446046933-26571-1-git-send-email-lixi@ddn.com> References: <1446046933-26571-1-git-send-email-lixi@ddn.com> Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Signed-off-by: Li Xi Change-Id: I30e6e56f8d45e26e2c6c5a1ffae1cf32f1c923cb --- debugfs/set_fields.c | 1 + e2fsck/pass1.c | 17 ++++++++++++----- lib/e2p/ls.c | 1 + lib/ext2fs/ext2_fs.h | 6 +++++- lib/ext2fs/swapfs.c | 2 ++ lib/ext2fs/tst_inode_size.c | 1 + lib/ext2fs/tst_super_size.c | 3 ++- lib/support/mkquota.c | 5 +++++ lib/support/quotaio.c | 9 ++++++++- lib/support/quotaio.h | 11 ++++++++--- misc/mke2fs.c | 6 ++++++ misc/tune2fs.c | 4 ++++ tests/d_fallocate_blkmap/expect | 4 ++-- tests/f_create_symlinks/expect | 8 ++++---- tests/m_bigjournal/expect.1 | 4 ++-- tests/m_large_file/expect.1 | 4 ++-- tests/m_quota/expect.1 | 15 ++++++++------- 17 files changed, 73 insertions(+), 28 deletions(-) diff --git a/debugfs/set_fields.c b/debugfs/set_fields.c index 57ef871..c027d8e 100644 --- a/debugfs/set_fields.c +++ b/debugfs/set_fields.c @@ -153,6 +153,7 @@ static struct field_set_info super_fields[] = { { "mount_opts", &set_sb.s_mount_opts, NULL, 64, parse_string }, { "usr_quota_inum", &set_sb.s_usr_quota_inum, NULL, 4, parse_uint }, { "grp_quota_inum", &set_sb.s_grp_quota_inum, NULL, 4, parse_uint }, + { "prj_quota_inum", &set_sb.s_prj_quota_inum, NULL, 4, parse_uint }, { "overhead_blocks", &set_sb.s_overhead_blocks, NULL, 4, parse_uint }, { "backup_bgs", &set_sb.s_backup_bgs[0], NULL, 4, parse_uint, FLAG_ARRAY, 2 }, diff --git a/e2fsck/pass1.c b/e2fsck/pass1.c index 23d15bd..eb3d19d 100644 --- a/e2fsck/pass1.c +++ b/e2fsck/pass1.c @@ -965,13 +965,20 @@ static int quota_inum_is_super(struct ext2_super_block *sb, ext2_ino_t ino) return 0; } -static int quota_inum_is_reserved(ext2_ino_t ino) +static int quota_inum_is_reserved(ext2_filsys fs, ext2_ino_t ino) { enum quota_type qtype; - for (qtype = 0; qtype < MAXQUOTAS; qtype++) - if (quota_type2inum(qtype) == ino) - return 1; + for (qtype = 0; qtype < MAXQUOTAS; qtype++) { + if (quota_type2inum(qtype) == ino) { + if (qtype != PRJQUOTA) + return 1; + else if (quota_inum_is_super(fs->super, ino)) + return 1; + else + return 0; + } + } return 0; } @@ -1526,7 +1533,7 @@ void e2fsck_pass1(e2fsck_t ctx) inode_size, "pass1"); failed_csum = 0; } - } else if (quota_inum_is_reserved(ino)) { + } else if (quota_inum_is_reserved(fs, ino)) { ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino); if ((fs->super->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA) && diff --git a/lib/e2p/ls.c b/lib/e2p/ls.c index 4e80372..d9594cd 100644 --- a/lib/e2p/ls.c +++ b/lib/e2p/ls.c @@ -210,6 +210,7 @@ static const char *checksum_type(__u8 type) static const char const *quota_prefix[MAXQUOTAS] = { [USRQUOTA] = "User quota inode:", [GRPQUOTA] = "Group quota inode:", + [PRJQUOTA] = "Project quota inode:", }; /** diff --git a/lib/ext2fs/ext2_fs.h b/lib/ext2fs/ext2_fs.h index cfeaa05..a5f4124 100644 --- a/lib/ext2fs/ext2_fs.h +++ b/lib/ext2fs/ext2_fs.h @@ -52,6 +52,7 @@ #define EXT2_JOURNAL_INO 8 /* Journal inode */ #define EXT2_EXCLUDE_INO 9 /* The "exclude" inode, for snapshots */ #define EXT4_REPLICA_INO 10 /* Used by non-upstream feature */ +#define EXT4_PRJ_QUOTA_INO 11 /* Project quota inode */ /* First non-reserved inode for old ext2 filesystems */ #define EXT2_GOOD_OLD_FIRST_INO 11 @@ -473,6 +474,7 @@ struct ext2_inode_large { __u32 i_crtime; /* File creation time */ __u32 i_crtime_extra; /* extra File creation time (nsec << 2 | epoch)*/ __u32 i_version_hi; /* high 32 bits for 64-bit version */ + __u32 i_projid; /* Project ID */ }; #define EXT4_INODE_CSUM_HI_EXTRA_END \ @@ -506,6 +508,7 @@ struct ext2_inode_large { #define inode_uid(inode) ((inode).i_uid | (inode).osd2.linux2.l_i_uid_high << 16) #define inode_gid(inode) ((inode).i_gid | (inode).osd2.linux2.l_i_gid_high << 16) +#define inode_projid(large_inode) ((large_inode).i_projid) #define ext2fs_set_i_uid_high(inode,x) ((inode).osd2.linux2.l_i_uid_high = (x)) #define ext2fs_set_i_gid_high(inode,x) ((inode).osd2.linux2.l_i_gid_high = (x)) @@ -719,7 +722,8 @@ struct ext2_super_block { __u8 s_encrypt_algos[4]; /* Encryption algorithms in use */ __u8 s_encrypt_pw_salt[16]; /* Salt used for string2key algorithm */ __le32 s_lpf_ino; /* Location of the lost+found inode */ - __le32 s_reserved[100]; /* Padding to the end of the block */ + __u32 s_prj_quota_inum; /* inode number of project quota file */ + __le32 s_reserved[99]; /* Padding to the end of the block */ __u32 s_checksum; /* crc32c(superblock) */ }; diff --git a/lib/ext2fs/swapfs.c b/lib/ext2fs/swapfs.c index ee7a455..bc50fd4 100644 --- a/lib/ext2fs/swapfs.c +++ b/lib/ext2fs/swapfs.c @@ -320,6 +320,8 @@ void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, t->i_crtime_extra = ext2fs_swab32(f->i_crtime_extra); if (extra_isize >= 28) t->i_version_hi = ext2fs_swab32(f->i_version_hi); + if (extra_isize >= 32) + t->i_projid = ext2fs_swab32(f->i_projid); i = sizeof(struct ext2_inode) + extra_isize + sizeof(__u32); if (bufsize < (int) i) diff --git a/lib/ext2fs/tst_inode_size.c b/lib/ext2fs/tst_inode_size.c index e20ec98..cc5d165 100644 --- a/lib/ext2fs/tst_inode_size.c +++ b/lib/ext2fs/tst_inode_size.c @@ -81,6 +81,7 @@ int main(int argc, char **argv) check_field(i_crtime, 4); check_field(i_crtime_extra, 4); check_field(i_version_hi, 4); + check_field(i_projid, 4); /* This size will change as new fields are added */ do_field("Large inode end", 0, 0, cur_offset, sizeof(inode)); #endif diff --git a/lib/ext2fs/tst_super_size.c b/lib/ext2fs/tst_super_size.c index 8e3c21f..9b25cce 100644 --- a/lib/ext2fs/tst_super_size.c +++ b/lib/ext2fs/tst_super_size.c @@ -140,7 +140,8 @@ int main(int argc, char **argv) check_field(s_encrypt_algos, 4); check_field(s_encrypt_pw_salt, 16); check_field(s_lpf_ino, 4); - check_field(s_reserved, 100 * 4); + check_field(s_prj_quota_inum, 4); + check_field(s_reserved, 99 * 4); check_field(s_checksum, 4); do_field("Superblock end", 0, 0, cur_offset, 1024); #endif diff --git a/lib/support/mkquota.c b/lib/support/mkquota.c index b74c885..442fd38 100644 --- a/lib/support/mkquota.c +++ b/lib/support/mkquota.c @@ -233,11 +233,16 @@ static int dict_uint_cmp(const void *a, const void *b) static inline qid_t get_qid(struct ext2_inode *inode, enum quota_type qtype) { + struct ext2_inode_large *large_inode; + switch (qtype) { case USRQUOTA: return inode_uid(*inode); case GRPQUOTA: return inode_gid(*inode); + case PRJQUOTA: + large_inode = (struct ext2_inode_large *) inode; + return inode_projid(*large_inode); default: return 0; } diff --git a/lib/support/quotaio.c b/lib/support/quotaio.c index bd8123e..6f52409 100644 --- a/lib/support/quotaio.c +++ b/lib/support/quotaio.c @@ -20,7 +20,11 @@ #include "common.h" #include "quotaio.h" -static const char * const extensions[MAXQUOTAS] = {"user", "group"}; +static const char * const extensions[MAXQUOTAS] = { + [USRQUOTA] = "user", + [GRPQUOTA] = "group", + [PRJQUOTA] = "project", +}; static const char * const basenames[] = { "", /* undefined */ "quota", /* QFMT_VFS_OLD */ @@ -56,6 +60,9 @@ ext2_ino_t quota_type2inum(enum quota_type qtype) case GRPQUOTA: return EXT4_GRP_QUOTA_INO; break; + case PRJQUOTA: + return EXT4_PRJ_QUOTA_INO; + break; default: return 0; break; diff --git a/lib/support/quotaio.h b/lib/support/quotaio.h index fc114e2..438d077 100644 --- a/lib/support/quotaio.h +++ b/lib/support/quotaio.h @@ -46,9 +46,10 @@ typedef int64_t qsize_t; /* Type in which we store size limitations */ enum quota_type { USRQUOTA = 0, GRPQUOTA = 1, + PRJQUOTA = 2, }; -#define MAXQUOTAS 2 +#define MAXQUOTAS 3 #if MAXQUOTAS > 32 #error "cannot have more than 32 quota types to fit in qtype_bits" @@ -56,7 +57,8 @@ enum quota_type { #define QUOTA_USR_BIT (1 << USRQUOTA) #define QUOTA_GRP_BIT (1 << GRPQUOTA) -#define QUOTA_ALL_BIT (QUOTA_USR_BIT | QUOTA_GRP_BIT) +#define QUOTA_PRJ_BIT (1 << PRJQUOTA) +#define QUOTA_ALL_BIT (QUOTA_USR_BIT | QUOTA_GRP_BIT | QUOTA_PRJ_BIT) typedef struct quota_ctx *quota_ctx_t; struct dict_t; @@ -72,7 +74,8 @@ struct quota_ctx { */ #define INITQMAGICS {\ 0xd9c01f11, /* USRQUOTA */\ - 0xd9c01927 /* GRPQUOTA */\ + 0xd9c01927, /* GRPQUOTA */\ + 0xd9c03f14 /* PRJQUOTA */\ } /* Size of blocks in which are counted size limits in generic utility parts */ @@ -240,6 +243,8 @@ static inline ext2_ino_t *quota_sb_inump(struct ext2_super_block *sb, enum quota return &sb->s_usr_quota_inum; case GRPQUOTA: return &sb->s_grp_quota_inum; + case PRJQUOTA: + return &sb->s_prj_quota_inum; default: return NULL; } diff --git a/misc/mke2fs.c b/misc/mke2fs.c index 5ead18e..97aa8c4 100644 --- a/misc/mke2fs.c +++ b/misc/mke2fs.c @@ -1017,6 +1017,8 @@ static void parse_extended_opts(struct ext2_super_block *param, quotatype_bits = QUOTA_USR_BIT; } else if (!strncmp(arg, "grp", 3)) { quotatype_bits = QUOTA_GRP_BIT; + } else if (!strncmp(arg, "prj", 3)) { + quotatype_bits = QUOTA_PRJ_BIT; } else { fprintf(stderr, _("Invalid quotatype parameter: %s\n"), @@ -2961,6 +2963,10 @@ int main (int argc, char *argv[]) exit(ext2fs_close_free(&fs) ? 1 : 0); } + if (EXT2_HAS_RO_COMPAT_FEATURE(&fs_param, + EXT4_FEATURE_RO_COMPAT_QUOTA)) + fs->super->s_first_ino = EXT2_GOOD_OLD_FIRST_INO + 1; + if (bad_blocks_filename) read_bb_file(fs, &bb_list, bad_blocks_filename); if (cflag) diff --git a/misc/tune2fs.c b/misc/tune2fs.c index 1684225..94e962c 100644 --- a/misc/tune2fs.c +++ b/misc/tune2fs.c @@ -1500,6 +1500,10 @@ static void parse_quota_opts(const char *opts) quota_enable[GRPQUOTA] = QOPT_ENABLE; } else if (strcmp(token, "^grpquota") == 0) { quota_enable[GRPQUOTA] = QOPT_DISABLE; + } else if (strcmp(token, "prjquota") == 0) { + quota_enable[PRJQUOTA] = QOPT_ENABLE; + } else if (strcmp(token, "^prjquota") == 0) { + quota_enable[PRJQUOTA] = QOPT_DISABLE; } else { fputs(_("\nBad quota options specified.\n\n" "Following valid quota options are available " diff --git a/tests/d_fallocate_blkmap/expect b/tests/d_fallocate_blkmap/expect index f7ae606..a66b06a 100644 --- a/tests/d_fallocate_blkmap/expect +++ b/tests/d_fallocate_blkmap/expect @@ -21,7 +21,7 @@ User: 0 Group: 0 Size: 40960 File ACL: 0 Directory ACL: 0 Links: 1 Blockcount: 82 Fragment: Address: 0 Number: 0 Size: 0 -Size of extra inode fields: 28 +Size of extra inode fields: 32 BLOCKS: (0-1):1312-1313, (2-11):8000-8009, (IND):8010, (12-39):8011-8038 TOTAL: 41 @@ -33,7 +33,7 @@ User: 0 Group: 0 Size: 10240000 File ACL: 0 Directory ACL: 0 Links: 1 Blockcount: 20082 Fragment: Address: 0 Number: 0 Size: 0 -Size of extra inode fields: 28 +Size of extra inode fields: 32 BLOCKS: (0-11):10000-10011, (IND):10012, (12-267):10013-10268, (DIND):10269, (IND):10270, (268-523):10271-10526, (IND):10527, (524-779):10528-10783, (IND):10784, (780-1035):10785-11040, (IND):11041, (1036-1291):11042-11297, (IND):11298, (1292-1547):11299-11554, (IND):11555, (1548-1803):11556-11811, (IND):11812, (1804-2059):11813-12068, (IND):12069, (2060-2315):12070-12325, (IND):12326, (2316-2571):12327-12582, (IND):12583, (2572-2827):12584-12839, (IND):12840, (2828-3083):12841-13096, (IND):13097, (3084-3339):13098-13353, (IND):13354, (3340-3595):13355-13610, (IND):13611, (3596-3851):13612-13867, (IND):13868, (3852-4107):13869-14124, (IND):14125, (4108-4363):14126-14381, (IND):14382, (4364-4619):14383-14638, (IND):14639, (4620-4875):14640-14895, (IND):14896, (4876-5131):14897-15152, (IND):15153, (5132-5387):15154-15409, (IND):15410, (5388-5643):15411-15666, (IND):15667, (5644-5899):15668-15923, (IND):15924, (5900-6155):15925-16180, (IND):16181, (6156-6411):16182-16437, (IND):16438, (6412-6667):16439-16694, (IND):16695, (6668-6923):16696-16951, (IND):16952, (6924-7179):16953-17208, (IND):17209, (7180-7435):17210-17465, (IND):17466, (7436-7691):17467-17722, (IND):17723, (7692-7947):17724-17979, (IND):17980, (7948-8203):17981-18236, (IND):18237, (8204-8459):18238-18493, (IND):18494, (8460-8715):18495-18750, (IND):18751, (8716-8971):18752-19007, (IND):19008, (8972-9227):19009-19264, (IND):19265, (9228-9483):19266-19521, (IND):19522, (9484-9739):19523-19778, (IND):19779, (9740-9995):19780-20035, (IND):20036, (9996-9999):20037-20040 TOTAL: 10041 diff --git a/tests/f_create_symlinks/expect b/tests/f_create_symlinks/expect index 47fa468..6e1553c 100644 --- a/tests/f_create_symlinks/expect +++ b/tests/f_create_symlinks/expect @@ -23,7 +23,7 @@ User: 0 Group: 0 Size: 31 File ACL: 0 Directory ACL: 0 Links: 1 Blockcount: 0 Fragment: Address: 0 Number: 0 Size: 0 -Size of extra inode fields: 28 +Size of extra inode fields: 32 Fast link dest: "/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" debugfs -R "stat /l_70" test.img Inode: 13 Type: symlink Mode: 0777 Flags: 0x10000000 @@ -32,7 +32,7 @@ User: 0 Group: 0 Size: 71 File ACL: 0 Directory ACL: 0 Links: 1 Blockcount: 0 Fragment: Address: 0 Number: 0 Size: 0 -Size of extra inode fields: 28 +Size of extra inode fields: 32 Extended attributes: system.data (11) Fast link dest: "/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" @@ -43,7 +43,7 @@ User: 0 Group: 0 Size: 501 File ACL: 0 Directory ACL: 0 Links: 1 Blockcount: 2 Fragment: Address: 0 Number: 0 Size: 0 -Size of extra inode fields: 28 +Size of extra inode fields: 32 EXTENTS: (0):153 debugfs -R "stat /l_1023" test.img @@ -53,7 +53,7 @@ User: 0 Group: 0 Size: 1024 File ACL: 0 Directory ACL: 0 Links: 1 Blockcount: 2 Fragment: Address: 0 Number: 0 Size: 0 -Size of extra inode fields: 28 +Size of extra inode fields: 32 EXTENTS: (0):154 debugfs -R "stat /l_1024" test.img diff --git a/tests/m_bigjournal/expect.1 b/tests/m_bigjournal/expect.1 index 61d85f9..8900596 100644 --- a/tests/m_bigjournal/expect.1 +++ b/tests/m_bigjournal/expect.1 @@ -35,8 +35,8 @@ Reserved blocks uid: 0 Reserved blocks gid: 0 First inode: 11 Inode size: 256 -Required extra isize: 28 -Desired extra isize: 28 +Required extra isize: 32 +Desired extra isize: 32 Journal inode: 8 Default directory hash: half_md4 Journal backup: inode blocks diff --git a/tests/m_large_file/expect.1 b/tests/m_large_file/expect.1 index 4acca41..06c8257 100644 --- a/tests/m_large_file/expect.1 +++ b/tests/m_large_file/expect.1 @@ -40,8 +40,8 @@ Reserved blocks uid: 0 Reserved blocks gid: 0 First inode: 11 Inode size: 256 -Required extra isize: 28 -Desired extra isize: 28 +Required extra isize: 32 +Desired extra isize: 32 Default directory hash: half_md4 diff --git a/tests/m_quota/expect.1 b/tests/m_quota/expect.1 index 787871c..dc8eca9 100644 --- a/tests/m_quota/expect.1 +++ b/tests/m_quota/expect.1 @@ -12,7 +12,7 @@ Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information -test_filesys: 11/32768 files (18.2% non-contiguous), 5703/131072 blocks +test_filesys: 12/32768 files (25.0% non-contiguous), 5709/131072 blocks Exit status is 0 Filesystem volume name: Last mounted on: @@ -26,8 +26,8 @@ Filesystem OS type: Linux Inode count: 32768 Block count: 131072 Reserved block count: 6553 -Free blocks: 125369 -Free inodes: 32757 +Free blocks: 125363 +Free inodes: 32756 First block: 1 Block size: 1024 Fragment size: 1024 @@ -40,11 +40,12 @@ Mount count: 0 Check interval: 15552000 (6 months) Reserved blocks uid: 0 Reserved blocks gid: 0 -First inode: 11 +First inode: 12 Inode size: 128 Default directory hash: half_md4 User quota inode: 3 Group quota inode: 4 +Project quota inode: 11 Group 0: (Blocks 1-8192) @@ -52,9 +53,9 @@ Group 0: (Blocks 1-8192) Reserved GDT blocks at 3-258 Block bitmap at 259 (+258), Inode bitmap at 260 (+259) Inode table at 261-516 (+260) - 7650 free blocks, 2037 free inodes, 2 directories - Free blocks: 543-8192 - Free inodes: 12-2048 + 7644 free blocks, 2036 free inodes, 2 directories + Free blocks: 549-8192 + Free inodes: 13-2048 Group 1: (Blocks 8193-16384) Backup superblock at 8193, Group descriptors at 8194-8194 Reserved GDT blocks at 8195-8450