Re: [GIT PULL] ext4 bug fixes for 4.2-rc2
Theodore Ts'o wrote on 07/05/2015 23:53:
> The following changes since commit a2fd66d069d86d793e9d39d4079b96f46d13f237:
>
> ext4: set lazytime on remount if MS_LAZYTIME is set by mount (2015-06-23
> 11:03:54 -0400)
>
Hi Ted,
I'm testing this patch and "ext4: set lazytime on remount if MS_LAZYTIME is set
by mount" on top of stable kernel 4.1.2.
So far no problems with lazytime enabled. Thanks for that :-)
But remounting with mount version 2.26.2 sucks. As promised, lazytime can be
enabled. But disabling it or trying to switch between atime, relatime, and
noatime doesn't work.
Starting from
# grep sda /proc/mounts
/dev/sda2 /home ext4 rw,lazytime,noatime,nobarrier,errors=remount-ro 0 0
some strace output:
# strace -o /tmp/st mount -o remount,nolazytime /home
# grep ^mount /tmp/st
mount("/dev/sda2", "/home", 0x2152780, MS_MGC_VAL|MS_REMOUNT|MS_NOATIME,
"nobarrier,errors=remount-ro") = 0
# strace -o /tmp/st mount -o remount,relatime /home
# grep ^mount /tmp/st
mount("/dev/sda2", "/home", 0x1543780, MS_REMOUNT|MS_RELATIME|MS_NOATIME,
"nobarrier,errors=remount-ro") = 0
# strace -o /tmp/st mount -o remount,atime /home
# grep ^mount /tmp/st
mount("/dev/sda2", "/home", 0x1534780, MS_MGC_VAL|MS_REMOUNT,
"nobarrier,errors=remount-ro") = 0
The contents of /proc/mounts isn't changed by all this :-(
Or should I contact the util-linux developers?
--
Regards,
Jörg.
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Re: [GIT PULL] ext4 bug fixes for 4.2-rc2
Theodore Ts'o wrote on 07/05/2015 23:53: The following changes since commit a2fd66d069d86d793e9d39d4079b96f46d13f237: ext4: set lazytime on remount if MS_LAZYTIME is set by mount (2015-06-23 11:03:54 -0400) snip Hi Ted, I'm testing this patch and ext4: set lazytime on remount if MS_LAZYTIME is set by mount on top of stable kernel 4.1.2. So far no problems with lazytime enabled. Thanks for that :-) But remounting with mount version 2.26.2 sucks. As promised, lazytime can be enabled. But disabling it or trying to switch between atime, relatime, and noatime doesn't work. Starting from # grep sda /proc/mounts /dev/sda2 /home ext4 rw,lazytime,noatime,nobarrier,errors=remount-ro 0 0 some strace output: # strace -o /tmp/st mount -o remount,nolazytime /home # grep ^mount /tmp/st mount(/dev/sda2, /home, 0x2152780, MS_MGC_VAL|MS_REMOUNT|MS_NOATIME, nobarrier,errors=remount-ro) = 0 # strace -o /tmp/st mount -o remount,relatime /home # grep ^mount /tmp/st mount(/dev/sda2, /home, 0x1543780, MS_REMOUNT|MS_RELATIME|MS_NOATIME, nobarrier,errors=remount-ro) = 0 # strace -o /tmp/st mount -o remount,atime /home # grep ^mount /tmp/st mount(/dev/sda2, /home, 0x1534780, MS_MGC_VAL|MS_REMOUNT, nobarrier,errors=remount-ro) = 0 The contents of /proc/mounts isn't changed by all this :-( Or should I contact the util-linux developers? -- Regards, Jörg. -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[GIT PULL] ext4 bug fixes for 4.2-rc2
The following changes since commit a2fd66d069d86d793e9d39d4079b96f46d13f237: ext4: set lazytime on remount if MS_LAZYTIME is set by mount (2015-06-23 11:03:54 -0400) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git tags/ext4_for_linus_stable for you to fetch changes up to 7444a072c387a93ebee7066e8aee776954ab0e41: ext4: replace open coded nofail allocation in ext4_free_blocks() (2015-07-05 12:33:44 -0400) Bug fixes (all for stable kernels) for ext4: * address corner cases for indirect blocks->extent migration * fix reserved block accounting invalidate_page when page_size != block_size (i.e., ppc or 1k block size file systems) * fix deadlocks when a memcg is under heavy memory pressure * fix fencepost error in lazytime optimization Eryu Guan (2): ext4: be more strict when migrating to non-extent based file ext4: correctly migrate a file with a hole at the beginning Lukas Czerner (1): ext4: fix reservation release on invalidatepage for delalloc fs Michal Hocko (1): ext4: replace open coded nofail allocation in ext4_free_blocks() Nikolay Borisov (2): bufferhead: Add _gfp version for sb_getblk() ext4: avoid deadlocks in the writeback path by using sb_getblk_gfp Theodore Ts'o (1): ext4: fix fencepost error in lazytime optimization fs/ext4/extents.c | 6 +++--- fs/ext4/inode.c | 22 ++ fs/ext4/mballoc.c | 16 +--- fs/ext4/migrate.c | 17 ++--- include/linux/buffer_head.h | 7 +++ 5 files changed, 47 insertions(+), 21 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[GIT PULL] ext4 bug fixes for 4.2-rc2
The following changes since commit a2fd66d069d86d793e9d39d4079b96f46d13f237: ext4: set lazytime on remount if MS_LAZYTIME is set by mount (2015-06-23 11:03:54 -0400) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git tags/ext4_for_linus_stable for you to fetch changes up to 7444a072c387a93ebee7066e8aee776954ab0e41: ext4: replace open coded nofail allocation in ext4_free_blocks() (2015-07-05 12:33:44 -0400) Bug fixes (all for stable kernels) for ext4: * address corner cases for indirect blocks-extent migration * fix reserved block accounting invalidate_page when page_size != block_size (i.e., ppc or 1k block size file systems) * fix deadlocks when a memcg is under heavy memory pressure * fix fencepost error in lazytime optimization Eryu Guan (2): ext4: be more strict when migrating to non-extent based file ext4: correctly migrate a file with a hole at the beginning Lukas Czerner (1): ext4: fix reservation release on invalidatepage for delalloc fs Michal Hocko (1): ext4: replace open coded nofail allocation in ext4_free_blocks() Nikolay Borisov (2): bufferhead: Add _gfp version for sb_getblk() ext4: avoid deadlocks in the writeback path by using sb_getblk_gfp Theodore Ts'o (1): ext4: fix fencepost error in lazytime optimization fs/ext4/extents.c | 6 +++--- fs/ext4/inode.c | 22 ++ fs/ext4/mballoc.c | 16 +--- fs/ext4/migrate.c | 17 ++--- include/linux/buffer_head.h | 7 +++ 5 files changed, 47 insertions(+), 21 deletions(-) -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
