From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 13964] New: ext4: panic causes lost data in git
Date: Tue, 11 Aug 2009 18:58:36 GMT
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Summary: ext4: panic causes lost data in git
Product: File System
Version: 2.5
Kernel Version: 2.6.31-rc5
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: ext4
AssignedTo: fs_ext4@kernel-bugs.osdl.org
ReportedBy: jesse.brandeburg@intel.com
Regression: No
When working within a local git tree, I committed a change, compiled and
reloaded my driver, which caused a panic.
After reboot my .git/objects/xx/xxxx (latest commit) had empty files. This
doesn't seem to be an acceptable loss of data. I've since started mounting
/home with data=ordered in the hope it would help.
I've mounted my LVM / and /home partitions with the default options
here is the output of tune2fs on /home
[root@jbrandeb-hc jbrandeb]# tune2fs -l /dev/mapper/vg_jbrandebhc-HomeVol
tune2fs 1.41.4 (27-Jan-2009)
Filesystem volume name:
Last mounted on: /home
Filesystem UUID: 696e2e7d-467d-47b3-992e-a28dcf9b1ef8
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype
needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg
dir_nlink extra_isize
Filesystem flags: signed_directory_hash
Default mount options: user_xattr acl
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 8454144
Block count: 33792000
Reserved block count: 1689600
Free blocks: 32742879
Free inodes: 8386475
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 1015
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 8192
Inode blocks per group: 512
Flex block group size: 16
Filesystem created: Tue Jun 23 09:50:14 2009
Last mount time: Tue Aug 11 11:55:14 2009
Last write time: Tue Aug 11 11:55:14 2009
Mount count: 1
Maximum mount count: -1
Last checked: Tue Aug 11 11:55:06 2009
Check interval: 0 ()
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 256
Required extra isize: 28
Desired extra isize: 28
Journal inode: 8
Default directory hash: half_md4
Directory Hash Seed: 25ca440e-1707-4084-ac05-3addd26ad952
Journal backup: inode blocks
Any other information will be gladly provided.
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