Message ID | 20220712080153.471437-1-bongiojp@gmail.com |
---|---|
State | Superseded |
Headers | show |
Series | [v3] ext4/056: add a check to make sure ext4 uuid ioctls get/set during fsstress. | expand |
On Tue, Jul 12, 2022 at 01:01:53AM -0700, Jeremy Bongio wrote: > Adds a utility to set/get uuid through ext4 ioctl. Executes the ioctls > while running fsstress. These ioctls are used by tune2fs to safely change > the uuid without racing other filesystem modifications. > > Signed-off-by: Jeremy Bongio <bongiojp@gmail.com> > --- > .gitignore | 1 + > src/Makefile | 4 +- > src/uuid_ioctl.c | 104 +++++++++++++++++++++++++++++++++++++++++++++ > tests/ext4/056 | 61 ++++++++++++++++++++++++++ > tests/ext4/056.out | 2 + > 5 files changed, 170 insertions(+), 2 deletions(-) > create mode 100644 src/uuid_ioctl.c > create mode 100755 tests/ext4/056 > create mode 100644 tests/ext4/056.out > > diff --git a/.gitignore b/.gitignore > index ba0c572b..dab24d68 100644 > --- a/.gitignore > +++ b/.gitignore > @@ -169,6 +169,7 @@ tags > /src/unwritten_mmap > /src/unwritten_sync > /src/usemem > +/src/uuid_ioctl > /src/writemod > /src/writev_on_pagefault > /src/xfsctl > diff --git a/src/Makefile b/src/Makefile > index 111ce1d9..e33e04de 100644 > --- a/src/Makefile > +++ b/src/Makefile > @@ -31,14 +31,14 @@ LINUX_TARGETS = xfsctl bstat t_mtab getdevicesize preallo_rw_pattern_reader \ > dio-invalidate-cache stat_test t_encrypted_d_revalidate \ > attr_replace_test swapon mkswap t_attr_corruption t_open_tmpfiles \ > fscrypt-crypt-util bulkstat_null_ocount splice-test chprojid_fail \ > - detached_mounts_propagation ext4_resize > + detached_mounts_propagation ext4_resize uuid_ioctl > > EXTRA_EXECS = dmerror fill2attr fill2fs fill2fs_check scaleread.sh \ > btrfs_crc32c_forged_name.py > > SUBDIRS = log-writes perf > > -LLDLIBS = $(LIBHANDLE) $(LIBACL) -lpthread -lrt > +LLDLIBS = $(LIBHANDLE) $(LIBACL) -lpthread -lrt -luuid > > ifeq ($(HAVE_XLOG_ASSIGN_LSN), true) > LINUX_TARGETS += loggen > diff --git a/src/uuid_ioctl.c b/src/uuid_ioctl.c > new file mode 100644 > index 00000000..367e5ed5 > --- /dev/null > +++ b/src/uuid_ioctl.c > @@ -0,0 +1,104 @@ > +// SPDX-License-Identifier: GPL-2.0 > + > +/* > + * Test program which uses the raw ext4 set_fsuuid ioctl directly. > + * SYNOPSIS: > + * $0 COMMAND MOUNT_POINT [UUID] > + * > + * COMMAND must be either "get" or "set". > + * The UUID must be a 16 octet represented as 32 hexadecimal digits in canonical > + * textual representation, e.g. output from `uuidgen`. > + * > + */ > + > +#include <stdio.h> > +#include <fcntl.h> > +#include <errno.h> > +#include <unistd.h> > +#include <stdint.h> > +#include <stdlib.h> > +#include <string.h> > +#include <sys/ioctl.h> > +#include <uuid/uuid.h> > +#include <linux/fs.h> > + > +struct fsuuid { > + __u32 fu_len; > + __u32 fu_flags; > + __u8 fu_uuid[]; > +}; > + > +#ifndef EXT4_IOC_GETFSUUID > +#define EXT4_IOC_GETFSUUID _IOR('f', 44, struct fsuuid) > +#endif > + > +#ifndef EXT4_IOC_SETFSUUID > +#define EXT4_IOC_SETFSUUID _IOW('f', 44, struct fsuuid) > +#endif > + > +int main(int argc, char **argv) > +{ > + int error, fd; > + struct fsuuid *fsuuid = NULL; > + > + if (argc < 3) { > + fprintf(stderr, "Invalid arguments\n"); > + return 1; > + } > + > + fd = open(argv[2], O_RDONLY); > + if (!fd) { > + perror(argv[2]); > + return 1; > + } > + > + fsuuid = malloc(sizeof(*fsuuid) + sizeof(uuid_t)); > + if (!fsuuid) { > + perror("malloc"); > + return 1; > + } > + fsuuid->fu_len = sizeof(uuid_t); > + fsuuid->fu_flags = 0; > + > + if (strcmp(argv[1], "get") == 0) { > + uuid_t uuid; > + char uuid_str[37]; > + > + if (ioctl(fd, EXT4_IOC_GETFSUUID, fsuuid)) { > + fprintf(stderr, "%s while trying to get fs uuid\n", > + strerror(errno)); > + return 1; > + } > + > + memcpy(&uuid, fsuuid->fu_uuid, sizeof(uuid)); > + uuid_unparse(uuid, uuid_str); > + printf("%s", uuid_str); > + } else if (strcmp(argv[1], "set") == 0) { > + uuid_t uuid; > + > + if (argc != 4) { > + fprintf(stderr, "UUID argument missing.\n"); > + return 1; > + } > + > + error = uuid_parse(argv[3], uuid); > + if (error < 0) { > + fprintf(stderr, "Invalid UUID. The UUID should be in " > + "canonical format. Example: " > + "8c628557-6987-42b2-ba16-b7cc79ddfb43\n"); > + return 1; > + } > + > + memcpy(&fsuuid->fu_uuid, uuid, sizeof(uuid)); > + if (ioctl(fd, EXT4_IOC_SETFSUUID, fsuuid)) { > + fprintf(stderr, "%s while trying to set fs uuid\n", > + strerror(errno)); > + return 1; > + } > + } else { > + fprintf(stderr, "Invalid command\n"); > + return 1; > + } > + > + return 0; > +} > diff --git a/tests/ext4/056 b/tests/ext4/056 > new file mode 100755 > index 00000000..4a011fa3 > --- /dev/null > +++ b/tests/ext4/056 > @@ -0,0 +1,61 @@ > +#! /bin/bash > +# SPDX-License-Identifier: GPL-2.0 > +# > +# Test the set/get UUID ioctl. > +# > + > +. ./common/preamble > +_begin_fstest auto ioctl > + > +# Override the default cleanup function. > +_cleanup() > +{ > + cd / > + rm -r -f $tmp.* > + $KILLALL_PROG -9 $FSSTRESS_PROG > /dev/null 2>&1 Better to refer to generic/390 ($fsstress_pid related part), it's current recommended way to kill fsstress processes (before we have a fsstress_cleanup). Others looks good to me, welcome more review points. Thanks, Zorro > +} > + > +# Import common functions. > +. ./common/filter > + > +# real QA test starts here > +_supported_fs ext4 > +_require_scratch > +_require_test_program uuid_ioctl > +_require_command $UUIDGEN_PROG uuidgen > + > +UUID_IOCTL=$here/src/uuid_ioctl > + > +# If the ioctl is not supported by the kernel, then skip test. > +current_uuid=$($UUID_IOCTL get $SCRATCH_MNT 2>&1) > +if [[ "$current_uuid" =~ ^Inappropriate[[:space:]]ioctl ]]; then > + _notrun "UUID ioctls are not supported by kernel." > +fi > + > +# metadata_csum_seed must be set to decouple checksums from the uuid. > +# Otherwise, checksums need to be recomputed when the uuid changes, which > +# is not supported by the ioctl. > +_scratch_mkfs_ext4 -O metadata_csum_seed >> $seqres.full 2>&1 > +_scratch_mount >> $seqres.full > + > +# Begin fsstress while modifying UUID > +fsstress_args=$(_scale_fsstress_args -d $SCRATCH_MNT -p 15 -n 999999) > +$FSSTRESS_PROG $fsstress_args > /dev/null 2>&1 & > + > +for n in $(seq 1 20); do > + new_uuid=$($UUIDGEN_PROG) > + > + echo "Setting UUID to ${new_uuid}" >> $seqres.full 2>&1 > + $UUID_IOCTL set $SCRATCH_MNT $new_uuid > + > + current_uuid=$($UUID_IOCTL get $SCRATCH_MNT) > + echo "$UUID_IOCTL get $SCARTCH_MNT: $current_uuid" >> $seqres.full 2>&1 > + if [[ "$current_uuid" != "$new_uuid" ]]; then > + echo "Current UUID ($current_uuid) does not equal what was sent with the ioctl ($new_uuid)" > + fi > +done > + > +# success, all done > +echo "Silence is golden" > +status=0 > +exit > diff --git a/tests/ext4/056.out b/tests/ext4/056.out > new file mode 100644 > index 00000000..6142fcd2 > --- /dev/null > +++ b/tests/ext4/056.out > @@ -0,0 +1,2 @@ > +QA output created by 056 > +Silence is golden > -- > 2.37.0.144.g8ac04bfd2-goog >
On Tue, Jul 12, 2022 at 01:01:53AM -0700, Jeremy Bongio wrote: > Adds a utility to set/get uuid through ext4 ioctl. Executes the ioctls > while running fsstress. These ioctls are used by tune2fs to safely change > the uuid without racing other filesystem modifications. > > Signed-off-by: Jeremy Bongio <bongiojp@gmail.com> > --- > .gitignore | 1 + > src/Makefile | 4 +- > src/uuid_ioctl.c | 104 +++++++++++++++++++++++++++++++++++++++++++++ > tests/ext4/056 | 61 ++++++++++++++++++++++++++ > tests/ext4/056.out | 2 + > 5 files changed, 170 insertions(+), 2 deletions(-) > create mode 100644 src/uuid_ioctl.c > create mode 100755 tests/ext4/056 > create mode 100644 tests/ext4/056.out > > diff --git a/.gitignore b/.gitignore > index ba0c572b..dab24d68 100644 > --- a/.gitignore > +++ b/.gitignore > @@ -169,6 +169,7 @@ tags > /src/unwritten_mmap > /src/unwritten_sync > /src/usemem > +/src/uuid_ioctl > /src/writemod > /src/writev_on_pagefault > /src/xfsctl > diff --git a/src/Makefile b/src/Makefile > index 111ce1d9..e33e04de 100644 > --- a/src/Makefile > +++ b/src/Makefile > @@ -31,14 +31,14 @@ LINUX_TARGETS = xfsctl bstat t_mtab getdevicesize preallo_rw_pattern_reader \ > dio-invalidate-cache stat_test t_encrypted_d_revalidate \ > attr_replace_test swapon mkswap t_attr_corruption t_open_tmpfiles \ > fscrypt-crypt-util bulkstat_null_ocount splice-test chprojid_fail \ > - detached_mounts_propagation ext4_resize > + detached_mounts_propagation ext4_resize uuid_ioctl > > EXTRA_EXECS = dmerror fill2attr fill2fs fill2fs_check scaleread.sh \ > btrfs_crc32c_forged_name.py > > SUBDIRS = log-writes perf > > -LLDLIBS = $(LIBHANDLE) $(LIBACL) -lpthread -lrt > +LLDLIBS = $(LIBHANDLE) $(LIBACL) -lpthread -lrt -luuid > > ifeq ($(HAVE_XLOG_ASSIGN_LSN), true) > LINUX_TARGETS += loggen > diff --git a/src/uuid_ioctl.c b/src/uuid_ioctl.c > new file mode 100644 > index 00000000..367e5ed5 > --- /dev/null > +++ b/src/uuid_ioctl.c > @@ -0,0 +1,104 @@ > +// SPDX-License-Identifier: GPL-2.0 > + > +/* > + * Test program which uses the raw ext4 set_fsuuid ioctl directly. > + * SYNOPSIS: > + * $0 COMMAND MOUNT_POINT [UUID] > + * > + * COMMAND must be either "get" or "set". > + * The UUID must be a 16 octet represented as 32 hexadecimal digits in canonical Nit: "16 octet sequence", not just "16 octet" ? > + * textual representation, e.g. output from `uuidgen`. > + * > + */ > + > +#include <stdio.h> > +#include <fcntl.h> > +#include <errno.h> > +#include <unistd.h> > +#include <stdint.h> > +#include <stdlib.h> > +#include <string.h> > +#include <sys/ioctl.h> > +#include <uuid/uuid.h> > +#include <linux/fs.h> > + > +struct fsuuid { > + __u32 fu_len; > + __u32 fu_flags; > + __u8 fu_uuid[]; > +}; > + > +#ifndef EXT4_IOC_GETFSUUID > +#define EXT4_IOC_GETFSUUID _IOR('f', 44, struct fsuuid) > +#endif > + > +#ifndef EXT4_IOC_SETFSUUID > +#define EXT4_IOC_SETFSUUID _IOW('f', 44, struct fsuuid) > +#endif > + > +int main(int argc, char **argv) > +{ > + int error, fd; > + struct fsuuid *fsuuid = NULL; > + > + if (argc < 3) { > + fprintf(stderr, "Invalid arguments\n"); > + return 1; > + } > + > + fd = open(argv[2], O_RDONLY); > + if (!fd) { > + perror(argv[2]); > + return 1; > + } > + > + fsuuid = malloc(sizeof(*fsuuid) + sizeof(uuid_t)); > + if (!fsuuid) { > + perror("malloc"); > + return 1; > + } > + fsuuid->fu_len = sizeof(uuid_t); > + fsuuid->fu_flags = 0; > + > + if (strcmp(argv[1], "get") == 0) { > + uuid_t uuid; > + char uuid_str[37]; > + > + if (ioctl(fd, EXT4_IOC_GETFSUUID, fsuuid)) { > + fprintf(stderr, "%s while trying to get fs uuid\n", > + strerror(errno)); > + return 1; > + } > + > + memcpy(&uuid, fsuuid->fu_uuid, sizeof(uuid)); > + uuid_unparse(uuid, uuid_str); > + printf("%s", uuid_str); printf("%s\n", uuid_str); perhaps? > + } else if (strcmp(argv[1], "set") == 0) { > + uuid_t uuid; > + > + if (argc != 4) { > + fprintf(stderr, "UUID argument missing.\n"); > + return 1; > + } > + > + error = uuid_parse(argv[3], uuid); > + if (error < 0) { > + fprintf(stderr, "Invalid UUID. The UUID should be in " > + "canonical format. Example: " > + "8c628557-6987-42b2-ba16-b7cc79ddfb43\n"); > + return 1; > + } > + > + memcpy(&fsuuid->fu_uuid, uuid, sizeof(uuid)); > + if (ioctl(fd, EXT4_IOC_SETFSUUID, fsuuid)) { > + fprintf(stderr, "%s while trying to set fs uuid\n", > + strerror(errno)); > + return 1; > + } > + } else { > + fprintf(stderr, "Invalid command\n"); > + return 1; > + } > + > + return 0; > +} > diff --git a/tests/ext4/056 b/tests/ext4/056 > new file mode 100755 > index 00000000..4a011fa3 > --- /dev/null > +++ b/tests/ext4/056 > @@ -0,0 +1,61 @@ > +#! /bin/bash > +# SPDX-License-Identifier: GPL-2.0 > +# > +# Test the set/get UUID ioctl. It's unusual that there's no copyright or authorship attribution in any of these new files, but perhaps that's deliberate? > +# > + > +. ./common/preamble > +_begin_fstest auto ioctl > + > +# Override the default cleanup function. > +_cleanup() > +{ > + cd / > + rm -r -f $tmp.* > + $KILLALL_PROG -9 $FSSTRESS_PROG > /dev/null 2>&1 Same thing Zorro said about using the new generic/390 method of starting and killing fsstress pids. With those bits fixed up I think this is more or less ready to go. --D > +} > + > +# Import common functions. > +. ./common/filter > + > +# real QA test starts here > +_supported_fs ext4 > +_require_scratch > +_require_test_program uuid_ioctl > +_require_command $UUIDGEN_PROG uuidgen > + > +UUID_IOCTL=$here/src/uuid_ioctl > + > +# If the ioctl is not supported by the kernel, then skip test. > +current_uuid=$($UUID_IOCTL get $SCRATCH_MNT 2>&1) > +if [[ "$current_uuid" =~ ^Inappropriate[[:space:]]ioctl ]]; then > + _notrun "UUID ioctls are not supported by kernel." > +fi > + > +# metadata_csum_seed must be set to decouple checksums from the uuid. > +# Otherwise, checksums need to be recomputed when the uuid changes, which > +# is not supported by the ioctl. > +_scratch_mkfs_ext4 -O metadata_csum_seed >> $seqres.full 2>&1 > +_scratch_mount >> $seqres.full > + > +# Begin fsstress while modifying UUID > +fsstress_args=$(_scale_fsstress_args -d $SCRATCH_MNT -p 15 -n 999999) > +$FSSTRESS_PROG $fsstress_args > /dev/null 2>&1 & > + > +for n in $(seq 1 20); do > + new_uuid=$($UUIDGEN_PROG) > + > + echo "Setting UUID to ${new_uuid}" >> $seqres.full 2>&1 > + $UUID_IOCTL set $SCRATCH_MNT $new_uuid > + > + current_uuid=$($UUID_IOCTL get $SCRATCH_MNT) > + echo "$UUID_IOCTL get $SCARTCH_MNT: $current_uuid" >> $seqres.full 2>&1 > + if [[ "$current_uuid" != "$new_uuid" ]]; then > + echo "Current UUID ($current_uuid) does not equal what was sent with the ioctl ($new_uuid)" > + fi > +done > + > +# success, all done > +echo "Silence is golden" > +status=0 > +exit > diff --git a/tests/ext4/056.out b/tests/ext4/056.out > new file mode 100644 > index 00000000..6142fcd2 > --- /dev/null > +++ b/tests/ext4/056.out > @@ -0,0 +1,2 @@ > +QA output created by 056 > +Silence is golden > -- > 2.37.0.144.g8ac04bfd2-goog >
diff --git a/.gitignore b/.gitignore index ba0c572b..dab24d68 100644 --- a/.gitignore +++ b/.gitignore @@ -169,6 +169,7 @@ tags /src/unwritten_mmap /src/unwritten_sync /src/usemem +/src/uuid_ioctl /src/writemod /src/writev_on_pagefault /src/xfsctl diff --git a/src/Makefile b/src/Makefile index 111ce1d9..e33e04de 100644 --- a/src/Makefile +++ b/src/Makefile @@ -31,14 +31,14 @@ LINUX_TARGETS = xfsctl bstat t_mtab getdevicesize preallo_rw_pattern_reader \ dio-invalidate-cache stat_test t_encrypted_d_revalidate \ attr_replace_test swapon mkswap t_attr_corruption t_open_tmpfiles \ fscrypt-crypt-util bulkstat_null_ocount splice-test chprojid_fail \ - detached_mounts_propagation ext4_resize + detached_mounts_propagation ext4_resize uuid_ioctl EXTRA_EXECS = dmerror fill2attr fill2fs fill2fs_check scaleread.sh \ btrfs_crc32c_forged_name.py SUBDIRS = log-writes perf -LLDLIBS = $(LIBHANDLE) $(LIBACL) -lpthread -lrt +LLDLIBS = $(LIBHANDLE) $(LIBACL) -lpthread -lrt -luuid ifeq ($(HAVE_XLOG_ASSIGN_LSN), true) LINUX_TARGETS += loggen diff --git a/src/uuid_ioctl.c b/src/uuid_ioctl.c new file mode 100644 index 00000000..367e5ed5 --- /dev/null +++ b/src/uuid_ioctl.c @@ -0,0 +1,104 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * Test program which uses the raw ext4 set_fsuuid ioctl directly. + * SYNOPSIS: + * $0 COMMAND MOUNT_POINT [UUID] + * + * COMMAND must be either "get" or "set". + * The UUID must be a 16 octet represented as 32 hexadecimal digits in canonical + * textual representation, e.g. output from `uuidgen`. + * + */ + +#include <stdio.h> +#include <fcntl.h> +#include <errno.h> +#include <unistd.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <sys/ioctl.h> +#include <uuid/uuid.h> +#include <linux/fs.h> + +struct fsuuid { + __u32 fu_len; + __u32 fu_flags; + __u8 fu_uuid[]; +}; + +#ifndef EXT4_IOC_GETFSUUID +#define EXT4_IOC_GETFSUUID _IOR('f', 44, struct fsuuid) +#endif + +#ifndef EXT4_IOC_SETFSUUID +#define EXT4_IOC_SETFSUUID _IOW('f', 44, struct fsuuid) +#endif + +int main(int argc, char **argv) +{ + int error, fd; + struct fsuuid *fsuuid = NULL; + + if (argc < 3) { + fprintf(stderr, "Invalid arguments\n"); + return 1; + } + + fd = open(argv[2], O_RDONLY); + if (!fd) { + perror(argv[2]); + return 1; + } + + fsuuid = malloc(sizeof(*fsuuid) + sizeof(uuid_t)); + if (!fsuuid) { + perror("malloc"); + return 1; + } + fsuuid->fu_len = sizeof(uuid_t); + fsuuid->fu_flags = 0; + + if (strcmp(argv[1], "get") == 0) { + uuid_t uuid; + char uuid_str[37]; + + if (ioctl(fd, EXT4_IOC_GETFSUUID, fsuuid)) { + fprintf(stderr, "%s while trying to get fs uuid\n", + strerror(errno)); + return 1; + } + + memcpy(&uuid, fsuuid->fu_uuid, sizeof(uuid)); + uuid_unparse(uuid, uuid_str); + printf("%s", uuid_str); + } else if (strcmp(argv[1], "set") == 0) { + uuid_t uuid; + + if (argc != 4) { + fprintf(stderr, "UUID argument missing.\n"); + return 1; + } + + error = uuid_parse(argv[3], uuid); + if (error < 0) { + fprintf(stderr, "Invalid UUID. The UUID should be in " + "canonical format. Example: " + "8c628557-6987-42b2-ba16-b7cc79ddfb43\n"); + return 1; + } + + memcpy(&fsuuid->fu_uuid, uuid, sizeof(uuid)); + if (ioctl(fd, EXT4_IOC_SETFSUUID, fsuuid)) { + fprintf(stderr, "%s while trying to set fs uuid\n", + strerror(errno)); + return 1; + } + } else { + fprintf(stderr, "Invalid command\n"); + return 1; + } + + return 0; +} diff --git a/tests/ext4/056 b/tests/ext4/056 new file mode 100755 index 00000000..4a011fa3 --- /dev/null +++ b/tests/ext4/056 @@ -0,0 +1,61 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Test the set/get UUID ioctl. +# + +. ./common/preamble +_begin_fstest auto ioctl + +# Override the default cleanup function. +_cleanup() +{ + cd / + rm -r -f $tmp.* + $KILLALL_PROG -9 $FSSTRESS_PROG > /dev/null 2>&1 +} + +# Import common functions. +. ./common/filter + +# real QA test starts here +_supported_fs ext4 +_require_scratch +_require_test_program uuid_ioctl +_require_command $UUIDGEN_PROG uuidgen + +UUID_IOCTL=$here/src/uuid_ioctl + +# If the ioctl is not supported by the kernel, then skip test. +current_uuid=$($UUID_IOCTL get $SCRATCH_MNT 2>&1) +if [[ "$current_uuid" =~ ^Inappropriate[[:space:]]ioctl ]]; then + _notrun "UUID ioctls are not supported by kernel." +fi + +# metadata_csum_seed must be set to decouple checksums from the uuid. +# Otherwise, checksums need to be recomputed when the uuid changes, which +# is not supported by the ioctl. +_scratch_mkfs_ext4 -O metadata_csum_seed >> $seqres.full 2>&1 +_scratch_mount >> $seqres.full + +# Begin fsstress while modifying UUID +fsstress_args=$(_scale_fsstress_args -d $SCRATCH_MNT -p 15 -n 999999) +$FSSTRESS_PROG $fsstress_args > /dev/null 2>&1 & + +for n in $(seq 1 20); do + new_uuid=$($UUIDGEN_PROG) + + echo "Setting UUID to ${new_uuid}" >> $seqres.full 2>&1 + $UUID_IOCTL set $SCRATCH_MNT $new_uuid + + current_uuid=$($UUID_IOCTL get $SCRATCH_MNT) + echo "$UUID_IOCTL get $SCARTCH_MNT: $current_uuid" >> $seqres.full 2>&1 + if [[ "$current_uuid" != "$new_uuid" ]]; then + echo "Current UUID ($current_uuid) does not equal what was sent with the ioctl ($new_uuid)" + fi +done + +# success, all done +echo "Silence is golden" +status=0 +exit diff --git a/tests/ext4/056.out b/tests/ext4/056.out new file mode 100644 index 00000000..6142fcd2 --- /dev/null +++ b/tests/ext4/056.out @@ -0,0 +1,2 @@ +QA output created by 056 +Silence is golden
Adds a utility to set/get uuid through ext4 ioctl. Executes the ioctls while running fsstress. These ioctls are used by tune2fs to safely change the uuid without racing other filesystem modifications. Signed-off-by: Jeremy Bongio <bongiojp@gmail.com> --- .gitignore | 1 + src/Makefile | 4 +- src/uuid_ioctl.c | 104 +++++++++++++++++++++++++++++++++++++++++++++ tests/ext4/056 | 61 ++++++++++++++++++++++++++ tests/ext4/056.out | 2 + 5 files changed, 170 insertions(+), 2 deletions(-) create mode 100644 src/uuid_ioctl.c create mode 100755 tests/ext4/056 create mode 100644 tests/ext4/056.out