I just enjoy an obviously broken XFS filesystem. It was a running
server, which I planned to migrate so I did "rsync -aHAX /
otherhost::rsyncmodule", and experienced a "killed". At that time I
thought it was a one time mistake, so restarted rsync, but Murphy made
it get killed again.
So I looked into dmesg, just to find this: It's the log of all messages,
so maybe twice the same, I copy everything for reference. See attachment
"xfs-bug.dmesg.txt".
I started to look, and quickly found a funny problem: Once I mount that
partition, I cannot unmount it again:
# mount /disks/work/
# umount /disks/work/
umount: /disks/work: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
So I rebooted without mounting that partition, and
# xfs_repair -n /dev/xvda2 [VERSION:3.1.2]
xfs_repair: /lib64/libuuid.so.1: no version information available
(required by xfs_repair)
Phase 1 - find and verify superblock...
Phase 2 - using internal log
- scan filesystem freespace and inode maps...
- found root inode chunk
Phase 3 - for each AG...
- scan (but don't clear) agi unlinked lists...
- process known inodes and perform inode discovery...
- agno = 0
- agno = 1
local inode 8636461 attr too small (size = 0, min size = 4)
bad attribute fork in inode 8636461, would clear attr fork
would have cleared inode 8636461
- agno = 2
- agno = 3
- process newly discovered inodes...
Phase 4 - check for duplicate blocks...
- setting up duplicate extent list...
- check for inodes claiming duplicate blocks...
- agno = 0
- agno = 1
- agno = 3
local inode 8636461 attr too small (size = 0, min size = 4)
bad attribute fork in inode 8636461, would clear attr fork
would have cleared inode 8636461
- agno = 2
No modify flag set, skipping phase 5
Phase 6 - check inode connectivity...
- traversing filesystem ...
- traversal finished ...
- moving disconnected inodes to lost+found ...
Phase 7 - verify link counts...
No modify flag set, skipping filesystem flush and exiting.
xfs_repair corrected it painlessly, and everything fine again. Just
wanted to report that a simple mount works and an immediate umount
fails. Maybe this could be fixed, would make repair simpler.
--
mit freundlichen Grüssen,
Michael Monnerie, Ing. BSc
it-management Internet Services
http://proteger.at [gesprochen: Prot-e-schee]
Tel: 0660 / 415 65 31
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BUG: unable to handle kernel NULL pointer dereference at 0000000000000002 IP: [<ffffffffa0066e0e>] xfs_attr_shortform_getvalue+0x24/0xda [xfs] PGD 692a5067 PUD 69f6c067 PMD 0 Oops: 0000 [1] SMP last sysfs file: /sys/devices/virtual/net/lo/type CPU 1 Modules linked in: binfmt_misc nfs lockd nfs_acl sunrpc ipv6 fuse loop dm_mod rtc_core rtc_lib xennet mptspi mptscsih mptbase scsi_transport_spi scsi_mod xfs reiserfs thermal_sys hwmon xenblk cdrom Supported: Yes Pid: 1809, comm: syslog-ng Not tainted 2.6.27.48-0.1-xen #1 RIP: e030:[<ffffffffa0066e0e>] [<ffffffffa0066e0e>] xfs_attr_shortform_getvalue+0x24/0xda [xfs] RSP: e02b:ffff880068b63cd8 EFLAGS: 00010296 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000007c7bfd5e RDX: 000000007c7bc727 RSI: 0000000000000002 RDI: ffff880068b63d18 RBP: ffff880068b63d18 R08: 0000000000002008 R09: ffffffffa00d81b0 R10: ffff880068b63e68 R11: ffffffff80562f0c R12: ffff880068b63dd8 R13: 0000000000000000 R14: 0000000000002008 R15: ffff880068b63e3c FS: 00007fae927a76f0(0000) GS:ffff8800014d5140(0000) knlGS:0000000000000000 CS: e033 DS: 0000 ES: 0000 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process syslog-ng (pid: 1809, threadinfo ffff880068b62000, task ffff88006a3ce4c0) Stack: ffff880069b50600 ffff880069b50600 ffff880069b50600 ffff880068b63dd8 0000000000000000 0000000000002008 ffff880068b63e3c ffffffffa0065b08 ffffffff80562f15 000000000000000a 0000000000000000 0000200800000000 Call Trace: [<ffffffffa0065b08>] xfs_attr_fetch+0x87/0xd4 [xfs] [<ffffffffa0065bd6>] xfs_attr_get+0x81/0xa3 [xfs] [<ffffffffa00aea3f>] xfs_xattr_secure_get+0x41/0x4e [xfs] [<ffffffff802bb7c2>] generic_getxattr+0x62/0x66 [<ffffffff803066db>] cap_inode_need_killpriv+0x2d/0x3b [<ffffffff802b3ca9>] fnotify_change+0xa6/0x334 [<ffffffff8029d6cb>] chown_common+0x81/0x9a [<ffffffff8029d74b>] sys_fchown+0x67/0x91 [<ffffffff8020b418>] system_call_fastpath+0x16/0x1b [<00007fae91ccfc07>] 0x7fae91ccfc07 Code: 41 5d 41 5e 41 5f c3 41 57 41 56 41 55 45 31 ed 41 54 55 48 89 fd 53 48 83 ec 08 48 8b 47 30 48 8b 40 58 48 8b 40 18 48 8d 58 04 <44> 0f b6 78 02 e9 92 00 00 00 44 0f b6 23 44 3b 65 08 75 77 48 RIP [<ffffffffa0066e0e>] xfs_attr_shortform_getvalue+0x24/0xda [xfs] RSP <ffff880068b63cd8> CR2: 0000000000000002 ---[ end trace 0b5d9a76acf21c38 ]--- BUG: unable to handle kernel NULL pointer dereference at 0000000000000002 IP: [<ffffffffa0066e0e>] xfs_attr_shortform_getvalue+0x24/0xda [xfs] PGD 27932067 PUD 35bf2067 PMD 0 Oops: 0000 [2] SMP last sysfs file: /sys/devices/xen/vif-1/modalias CPU 0 Modules linked in: binfmt_misc nfs lockd nfs_acl sunrpc ipv6 fuse loop dm_mod rtc_core rtc_lib xennet mptspi mptscsih mptbase scsi_transport_spi scsi_mod xfs reiserfs thermal_sys hwmon xenblk cdrom Supported: Yes Pid: 5866, comm: rsync Tainted: G D 2.6.27.48-0.1-xen #1 RIP: e030:[<ffffffffa0066e0e>] [<ffffffffa0066e0e>] xfs_attr_shortform_getvalue+0x24/0xda [xfs] RSP: e02b:ffff880068b71be8 EFLAGS: 00010296 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000275b19c4 RDX: 0000000008d26645 RSI: 00000000ffffffff RDI: ffff880068b71c28 RBP: ffff880068b71c28 R08: 0000000000000002 R09: ffffffffa00d81d0 R10: ffff880068b71e08 R11: ffff880068b71e08 R12: ffff880068b71ce8 R13: 0000000000000000 R14: 0000000000000002 R15: ffff880068b71d44 FS: 00007f44789eb6f0(0000) GS:ffffffff80763080(0000) knlGS:0000000000000000 CS: e033 DS: 0000 ES: 0000 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process rsync (pid: 5866, threadinfo ffff880068b70000, task ffff880027b30280) Stack: 0000000000000000 ffff880069b50600 ffff880069b50600 ffff880068b71ce8 ffff8800636e1ea8 0000000000000002 ffff880068b71d44 ffffffffa0065b08 ffffffffa00b06d4 000000000000000c ffff8800636e1ea8 0000000200000130 Call Trace: [<ffffffffa0065b08>] xfs_attr_fetch+0x87/0xd4 [xfs] [<ffffffffa0065bd6>] xfs_attr_get+0x81/0xa3 [xfs] [<ffffffffa005ce96>] xfs_acl_get_attr+0x46/0x63 [xfs] [<ffffffffa005d613>] xfs_acl_vget+0x6b/0xec [xfs] [<ffffffff802bb7c2>] generic_getxattr+0x62/0x66 [<ffffffff802bc09d>] vfs_getxattr+0xaf/0xc1 [<ffffffff802bc155>] getxattr+0xa6/0x107 [<ffffffff802bc2e1>] sys_getxattr+0x4c/0x67 [<ffffffff8020b418>] system_call_fastpath+0x16/0x1b [<00007f4477f2ed79>] 0x7f4477f2ed79 Code: 41 5d 41 5e 41 5f c3 41 57 41 56 41 55 45 31 ed 41 54 55 48 89 fd 53 48 83 ec 08 48 8b 47 30 48 8b 40 58 48 8b 40 18 48 8d 58 04 <44> 0f b6 78 02 e9 92 00 00 00 44 0f b6 23 44 3b 65 08 75 77 48 RIP [<ffffffffa0066e0e>] xfs_attr_shortform_getvalue+0x24/0xda [xfs] RSP <ffff880068b71be8> CR2: 0000000000000002 ---[ end trace 0b5d9a76acf21c38 ]--- BUG: unable to handle kernel NULL pointer dereference at 0000000000000002 IP: [<ffffffffa0066e0e>] xfs_attr_shortform_getvalue+0x24/0xda [xfs] PGD 6203b067 PUD 13a8c067 PMD 0 Oops: 0000 [3] SMP last sysfs file: /sys/devices/xen/vif-1/modalias CPU 0 Modules linked in: binfmt_misc nfs lockd nfs_acl sunrpc ipv6 fuse loop dm_mod rtc_core rtc_lib xennet mptspi mptscsih mptbase scsi_transport_spi scsi_mod xfs reiserfs thermal_sys hwmon xenblk cdrom Supported: Yes Pid: 6042, comm: rsync Tainted: G D 2.6.27.48-0.1-xen #1 RIP: e030:[<ffffffffa0066e0e>] [<ffffffffa0066e0e>] xfs_attr_shortform_getvalue+0x24/0xda [xfs] RSP: e02b:ffff880027b99be8 EFLAGS: 00010296 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000275b19c4 RDX: 0000000008d26645 RSI: 00000000ffffffff RDI: ffff880027b99c28 RBP: ffff880027b99c28 R08: 0000000000000002 R09: ffffffffa00d81d0 R10: ffff880027b99e08 R11: ffff880027b99e08 R12: ffff880027b99ce8 R13: 0000000000000000 R14: 0000000000000002 R15: ffff880027b99d44 FS: 00007fb4d45fc6f0(0000) GS:ffffffff80763080(0000) knlGS:0000000000000000 CS: e033 DS: 0000 ES: 0000 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process rsync (pid: 6042, threadinfo ffff880027b98000, task ffff880027be6040) Stack: 0000000000000001 ffff880069b50600 ffff880069b50600 ffff880027b99ce8 ffff8800636e1068 0000000000000002 ffff880027b99d44 ffffffffa0065b08 ffffffffa00b06d4 000000000000000c ffff8800636e1068 0000000200000130 Call Trace: [<ffffffffa0065b08>] xfs_attr_fetch+0x87/0xd4 [xfs] [<ffffffffa0065bd6>] xfs_attr_get+0x81/0xa3 [xfs] [<ffffffffa005ce96>] xfs_acl_get_attr+0x46/0x63 [xfs] [<ffffffffa005d613>] xfs_acl_vget+0x6b/0xec [xfs] [<ffffffff802bb7c2>] generic_getxattr+0x62/0x66 [<ffffffff802bc09d>] vfs_getxattr+0xaf/0xc1 [<ffffffff802bc155>] getxattr+0xa6/0x107 [<ffffffff802bc2e1>] sys_getxattr+0x4c/0x67 [<ffffffff8020b418>] system_call_fastpath+0x16/0x1b [<00007fb4d3b3fd79>] 0x7fb4d3b3fd79 Code: 41 5d 41 5e 41 5f c3 41 57 41 56 41 55 45 31 ed 41 54 55 48 89 fd 53 48 83 ec 08 48 8b 47 30 48 8b 40 58 48 8b 40 18 48 8d 58 04 <44> 0f b6 78 02 e9 92 00 00 00 44 0f b6 23 44 3b 65 08 75 77 48 RIP [<ffffffffa0066e0e>] xfs_attr_shortform_getvalue+0x24/0xda [xfs] RSP <ffff880027b99be8> CR2: 0000000000000002 ---[ end trace 0b5d9a76acf21c38 ]--- BUG: unable to handle kernel NULL pointer dereference at 0000000000000002 IP: [<ffffffffa0066e0e>] xfs_attr_shortform_getvalue+0x24/0xda [xfs] PGD 68f43067 PUD 6921f067 PMD 0 Oops: 0000 [4] SMP last sysfs file: /sys/devices/xen/vif-1/modalias CPU 0 Modules linked in: binfmt_misc nfs lockd nfs_acl sunrpc ipv6 fuse loop dm_mod rtc_core rtc_lib xennet mptspi mptscsih mptbase scsi_transport_spi scsi_mod xfs reiserfs thermal_sys hwmon xenblk cdrom Supported: Yes Pid: 6084, comm: rsync Tainted: G D 2.6.27.48-0.1-xen #1 RIP: e030:[<ffffffffa0066e0e>] [<ffffffffa0066e0e>] xfs_attr_shortform_getvalue+0x24/0xda [xfs] RSP: e02b:ffff88006a381be8 EFLAGS: 00010296 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000275b19c4 RDX: 0000000008d26645 RSI: 00000000ffffffff RDI: ffff88006a381c28 RBP: ffff88006a381c28 R08: 0000000000000002 R09: ffffffffa00d81d0 R10: ffff88006a381e08 R11: ffff88006a381e08 R12: ffff88006a381ce8 R13: 0000000000000000 R14: 0000000000000002 R15: ffff88006a381d44 FS: 00007f23683d46f0(0000) GS:ffffffff80763080(0000) knlGS:0000000000000000 CS: e033 DS: 0000 ES: 0000 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process rsync (pid: 6084, threadinfo ffff88006a380000, task ffff880027be6500) Stack: ffff880035a7ab40 ffff880069b50600 ffff880069b50600 ffff88006a381ce8 ffff8800636e1d78 0000000000000002 ffff88006a381d44 ffffffffa0065b08 ffffffffa00b06d4 000000000000000c ffff8800636e1d78 0000000200000130 Call Trace: [<ffffffffa0065b08>] xfs_attr_fetch+0x87/0xd4 [xfs] [<ffffffffa0065bd6>] xfs_attr_get+0x81/0xa3 [xfs] [<ffffffffa005ce96>] xfs_acl_get_attr+0x46/0x63 [xfs] [<ffffffffa005d613>] xfs_acl_vget+0x6b/0xec [xfs] [<ffffffff802bb7c2>] generic_getxattr+0x62/0x66 [<ffffffff802bc09d>] vfs_getxattr+0xaf/0xc1 [<ffffffff802bc155>] getxattr+0xa6/0x107 [<ffffffff802bc2e1>] sys_getxattr+0x4c/0x67 [<ffffffff8020b418>] system_call_fastpath+0x16/0x1b [<00007f2367917d79>] 0x7f2367917d79 Code: 41 5d 41 5e 41 5f c3 41 57 41 56 41 55 45 31 ed 41 54 55 48 89 fd 53 48 83 ec 08 48 8b 47 30 48 8b 40 58 48 8b 40 18 48 8d 58 04 <44> 0f b6 78 02 e9 92 00 00 00 44 0f b6 23 44 3b 65 08 75 77 48 RIP [<ffffffffa0066e0e>] xfs_attr_shortform_getvalue+0x24/0xda [xfs] RSP <ffff88006a381be8> CR2: 0000000000000002 ---[ end trace 0b5d9a76acf21c38 ]---
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