https://bugzilla.kernel.org/show_bug.cgi?id=89621 --- Comment #16 from John Hughes <john@xxxxxxxxx> --- Ok, I've now seen the bug while running 3.18.19 (compiled by me straight from kernel git). It stayed up for way longer this time :-) but then... [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Initializing cgroup subsys cpuacct [ 0.000000] Linux version 3.18.19-jh1 (john@olympic) (gcc version 4.7.2 (Debian 4.7.2-5) ) #1 SMP Thu Jul 23 14:54:25 CEST 2015 [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-3.18.19-jh1 root=/dev/mapper/olympic-olympic--root ro console=tty0 console=ttyS0,19200n8 quiet ... [ 5.310778] EXT4-fs (dm-0): re-mounted. Opts: errors=remount-ro [ 7.917833] EXT4-fs (vda1): mounting ext3 file system using the ext4 subsystem [ 7.937645] EXT4-fs (vda1): mounted filesystem with ordered data mode. Opts: errors=remount-ro [ 7.973622] EXT4-fs (dm-2): mounting ext3 file system using the ext4 subsystem [ 8.020501] EXT4-fs (dm-2): mounted filesystem with ordered data mode. Opts: errors=remount-ro [ 8.051234] EXT4-fs (dm-3): mounting ext3 file system using the ext4 subsystem [ 8.084443] EXT4-fs (dm-3): mounted filesystem with ordered data mode. Opts: errors=remount-ro [ 8.110174] EXT4-fs: Warning: mounting with data=journal disables delayed allocation and O_DIRECT support! [ 8.110180] EXT4-fs (dm-4): mounting ext3 file system using the ext4 subsystem [ 8.163955] EXT4-fs (dm-4): mounted filesystem with journalled data mode. Opts: data=journal,errors=remount-ro ... [1570311.174406] EXT4-fs (dm-2): pa ffff8800281ac980: logic 0, phys. 1351168, len 512 [1570311.176802] EXT4-fs error (device dm-2): ext4_mb_release_inode_pa:3773: group 41, free 431, pa_free 430 [1570311.179413] Aborting journal on device dm-2-8. [1570311.199091] EXT4-fs (dm-2): Remounting filesystem read-only On reboot the system complained about dm-2 being bad: [ 9.196972] EXT4-fs (dm-2): mounting ext3 file system using the ext4 subsystem [ 10.134032] EXT4-fs warning (device dm-2): ext4_clear_journal_err:4659: Filesystem error recorded from previous mount: IO failure [ 10.136694] EXT4-fs warning (device dm-2): ext4_clear_journal_err:4660: Marking fs in need of filesystem check. [ 10.158051] EXT4-fs (dm-2): warning: mounting fs with errors, running e2fsck is recommended [ 10.171173] EXT4-fs (dm-2): Errors on filesystem, clearing orphan list. [ 10.171173] [ 10.173578] EXT4-fs (dm-2): recovery complete [ 10.188013] EXT4-fs (dm-2): mounted filesystem with ordered data mode. Opts: errors=remount-ro So I unmounted it and did a fsck: Script started on Tue Aug 11 16:54:56 2015 root@olympic:~# fsck -y -f /dev/mapper/olympic-olympic--home fsck from util-linux 2.20.1 e2fsck 1.42.5 (29-Jul-2012) Pass 1: Checking inodes, blocks, and sizes Inodes that were part of a corrupted orphan linked list found. Fix? yes Inode 3827814 was part of the orphaned inode list. FIXED. Deleted inode 3828431 has zero dtime. Fix? yes Inode 4137318 was part of the orphaned inode list. FIXED. Inode 4137485 was part of the orphaned inode list. FIXED. Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Block bitmap differences: -(723856--723871) -(738144--738172) +1351589 -7897632 -(7926715--7926730) -(11616272--11616287) -(11627328--11627356) -18842491 -(18846824--18846839) -29065743 -(29093767--29093782) -32965419 -(32983830--32983845) -(36864912--36864919) -(36965200--36965204) Fix? yes Free blocks count wrong for group #22 (27818, counted=27863). Fix? yes Free blocks count wrong for group #241 (25273, counted=25290). Fix? yes Free blocks count wrong for group #354 (23179, counted=23224). Fix? yes Free blocks count wrong for group #575 (25214, counted=25231). Fix? yes Free blocks count wrong for group #887 (24494, counted=24511). Fix? yes Free blocks count wrong for group #1006 (21249, counted=21266). Fix? yes Free blocks count wrong for group #1125 (25845, counted=25853). Fix? yes Free blocks count wrong for group #1128 (28938, counted=28943). Fix? yes Free blocks count wrong (22597710, counted=22597881). Fix? yes Inode bitmap differences: -3827814 -3828431 -4137318 -4137485 Fix? yes Free inodes count wrong for group #467 (5325, counted=5327). Fix? yes Free inodes count wrong for group #505 (6985, counted=6987). Fix? yes Free inodes count wrong (9975485, counted=9975489). Fix? yes olympic-home: ***** FILE SYSTEM WAS MODIFIED ***** olympic-home: 510271/10485760 files (13.1% non-contiguous), 19345159/41943040 blocks root@olympic:~# exit Script done on Tue Aug 11 17:01:11 2015 -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html