Here's another kernel report, this time from /dev/sda1, which is a QEMU-IDE view of a local LVM volume and is only 4060864 blocks big, so it falls into neither the "Ceph's fault" nor "8TB is special" bins: [922646.672586] EXT4-fs error (device sda1): ext4_mb_generate_buddy:756: group 17, 24652 clusters in bitmap, 24651 in gd; block bitmap corrupt. [922646.673295] Aborting journal on device sda1-8. [922646.673904] EXT4-fs (sda1): Remounting filesystem read-only [922646.684017] ------------[ cut here ]------------ [922646.685564] WARNING: CPU: 0 PID: 10001 at /build/linux-oxWk_8/linux-3.13.7/fs/ext4/ext4_jbd2.c:259 __ext4_handle_dirty_metadata+0x17e/0x190 [ext4]() [922646.685566] Modules linked in: openafs(PO) loop ttm drm_kms_helper drm evdev psmouse processor parport_pc pcspkr serio_raw parport i2c_piix4 thermal_sys button i2c_core ext4 crc16 mbcache jbd2 sg sd_mod crc_t10dif crct10dif_common ata_generic virtio_blk floppy ata_piix ahci libahci virtio_pci virtio_ring virtio libata e1000 scsi_mod [922646.692926] CPU: 0 PID: 10001 Comm: logrotate Tainted: P O 3.13-1-amd64 #1 Debian 3.13.7-1 [922646.692929] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [922646.692931] 0000000000000009 ffffffff814a1327 0000000000000000 ffffffff8105ba72 [922646.692935] ffff88000356c2a0 00000000ffffffe2 0000000000000000 ffff88000435f408 [922646.692938] ffffffffa017aa80 ffffffffa015b30e ffff8800083784c8 ffff88001f4ba000 [922646.692941] Call Trace: [922646.692977] [<ffffffff814a1327>] ? dump_stack+0x41/0x51 [922646.696017] [<ffffffff8105ba72>] ? warn_slowpath_common+0x72/0x90 [922646.699226] [<ffffffffa015b30e>] ? __ext4_handle_dirty_metadata+0x17e/0x190 [ext4] [922646.699234] [<ffffffffa0135c50>] ? ext4_dirty_inode+0x20/0x50 [ext4] [922646.699243] [<ffffffffa0163667>] ? ext4_free_blocks+0x5e7/0xb90 [ext4] [922646.699260] [<ffffffff81096b9c>] ? wake_up_bit+0xc/0x20 [922646.699269] [<ffffffffa015779c>] ? ext4_ext_remove_space+0x7bc/0xff0 [ext4] [922646.699278] [<ffffffffa0159e48>] ? ext4_ext_truncate+0x98/0xc0 [ext4] [922646.699284] [<ffffffffa0134169>] ? ext4_truncate+0x379/0x3c0 [ext4] [922646.699291] [<ffffffffa0134cc9>] ? ext4_evict_inode+0x459/0x4b0 [ext4] [922646.699312] [<ffffffff811929c3>] ? evict+0xa3/0x190 [922646.699316] [<ffffffff8118ece8>] ? dentry_kill+0x1e8/0x230 [922646.699319] [<ffffffff8118ed84>] ? dput+0x54/0xf0 [922646.699334] [<ffffffff8117afe8>] ? __fput+0x148/0x210 [922646.699346] [<ffffffff81078ea7>] ? task_work_run+0x97/0xd0 [922646.699356] [<ffffffff81012969>] ? do_notify_resume+0x59/0x90 [922646.699366] [<ffffffff814ae7b2>] ? int_signal+0x12/0x17 [922646.699385] ---[ end trace bfc86d6bd5d1e863 ]--- [922646.712017] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 [922646.712017] IP: [<ffffffffa014a7cc>] __ext4_error_inode+0x2c/0x150 [ext4] [922646.712017] PGD 1bcf1067 PUD 1f3bc067 PMD 0 [922646.712017] Oops: 0000 [#1] SMP [922646.712017] Modules linked in: openafs(PO) loop ttm drm_kms_helper drm evdev psmouse processor parport_pc pcspkr serio_raw parport i2c_piix4 thermal_sys button i2c_core ext4 crc16 mbcache jbd2 sg sd_mod crc_t10dif crct10dif_common ata_generic virtio_blk floppy ata_piix ahci libahci virtio_pci virtio_ring virtio libata e1000 scsi_mod [922646.712017] CPU: 0 PID: 10001 Comm: logrotate Tainted: P W O 3.13-1-amd64 #1 Debian 3.13.7-1 [922646.712017] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [922646.712017] task: ffff880000f11800 ti: ffff880000e90000 task.ti: ffff880000e90000 [922646.712017] RIP: 0010:[<ffffffffa014a7cc>] [<ffffffffa014a7cc>] __ext4_error_inode+0x2c/0x150 [ext4] [922646.712017] RSP: 0018:ffff880000e91b58 EFLAGS: 00010292 [922646.712017] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080001 [922646.712017] RDX: 00000000000012ea RSI: ffffffffa018291d RDI: 0000000000000000 [922646.712017] RBP: ffff880000e91be8 R08: ffffffffa017fb38 R09: 0000000000000005 [922646.712017] R10: 0000000000000000 R11: ffff880000e9192e R12: 0000000000080001 [922646.712017] R13: ffffffffa017aa80 R14: 00000000000012ea R15: ffffffffa017fb38 [922646.712017] FS: 00007f4357fb0800(0000) GS:ffff88001fc00000(0000) knlGS:0000000000000000 [922646.712017] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [922646.712017] CR2: 00000000001f8000 CR3: 000000001bd00000 CR4: 00000000000006f0 [922646.712017] Stack: [922646.712017] ffffffffa015b30e 00000000000012ea ffffffff8149efa2 0000000000000010 [922646.712017] ffff880000e91bc8 ffff880000e91b88 0000000000000103 bfc86d6bd5d1e863 [922646.712017] 0000000000003232 ffff88000435f408 ffffffffa015ae88 0000000000000227 [922646.712017] Call Trace: [922646.712017] [<ffffffffa015b30e>] ? __ext4_handle_dirty_metadata+0x17e/0x190 [ext4] [922646.712017] [<ffffffff8149efa2>] ? printk+0x4f/0x51 [922646.712017] [<ffffffffa015ae88>] ? ext4_journal_abort_handle+0x38/0xb0 [ext4] [922646.712017] [<ffffffffa015b285>] ? __ext4_handle_dirty_metadata+0xf5/0x190 [ext4] [922646.712017] [<ffffffffa0163667>] ? ext4_free_blocks+0x5e7/0xb90 [ext4] [922646.712017] [<ffffffff81096b9c>] ? wake_up_bit+0xc/0x20 [922646.712017] [<ffffffffa015779c>] ? ext4_ext_remove_space+0x7bc/0xff0 [ext4] [922646.712017] [<ffffffffa0159e48>] ? ext4_ext_truncate+0x98/0xc0 [ext4] [922646.712017] [<ffffffffa0134169>] ? ext4_truncate+0x379/0x3c0 [ext4] [922646.712017] [<ffffffffa0134cc9>] ? ext4_evict_inode+0x459/0x4b0 [ext4] [922646.712017] [<ffffffff811929c3>] ? evict+0xa3/0x190 [922646.712017] [<ffffffff8118ece8>] ? dentry_kill+0x1e8/0x230 [922646.712017] [<ffffffff8118ed84>] ? dput+0x54/0xf0 [922646.712017] [<ffffffff8117afe8>] ? __fput+0x148/0x210 [922646.712017] [<ffffffff81078ea7>] ? task_work_run+0x97/0xd0 [922646.712017] [<ffffffff81012969>] ? do_notify_resume+0x59/0x90 [922646.712017] [<ffffffff814ae7b2>] ? int_signal+0x12/0x17 [922646.712017] Code: 48 89 e5 41 57 4d 89 c7 41 56 41 89 d6 41 55 49 89 f5 48 c7 c6 1d 29 18 a0 41 54 49 89 cc 53 48 89 fb 48 83 ec 68 4c 89 4c 24 60 <48> 8b 47 28 48 8b 57 40 48 8b 80 f8 02 00 00 48 8b 40 68 89 90 [922646.712017] RIP [<ffffffffa014a7cc>] __ext4_error_inode+0x2c/0x150 [ext4] [922646.712017] RSP <ffff880000e91b58> [922646.712017] CR2: 0000000000000028 [922646.753519] ---[ end trace bfc86d6bd5d1e864 ]--- dumpe2fs on /dev/sda1 reports: Filesystem volume name: <none> Last mounted on: / Filesystem UUID: 680c70f2-6ff5-49f9-9823-4f1d48062a0c 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 with errors Errors behavior: Continue Filesystem OS type: Linux Inode count: 262144 Block count: 1048064 Reserved block count: 10480 Free blocks: 808533 Free inodes: 220750 First block: 0 Block size: 4096 Fragment size: 4096 Reserved GDT blocks: 255 Blocks per group: 32768 Fragments per group: 32768 Inodes per group: 8192 Inode blocks per group: 512 Flex block group size: 16 Filesystem created: Fri Feb 21 02:30:29 2014 Last mount time: Sun Apr 20 14:08:06 2014 Last write time: Sun Apr 20 14:08:06 2014 Mount count: 29 Maximum mount count: -1 Last checked: Fri Feb 21 02:30:29 2014 Check interval: 0 (<none>) Lifetime writes: 15 GB 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 First orphan inode: 131314 Default directory hash: half_md4 Directory Hash Seed: ef50dd1a-28f7-4ef3-baa2-b8e579d852a3 Journal backup: inode blocks FS Error count: 1 First error time: Thu May 1 06:25:13 2014 First error function: ext4_mb_generate_buddy First error line #: 756 First error inode #: 0 First error block #: 0 Last error time: Thu May 1 06:25:13 2014 Last error function: ext4_mb_generate_buddy Last error line #: 756 Last error inode #: 0 Last error block #: 0 Journal features: journal_incompat_revoke Journal size: 64M Journal length: 16384 Journal sequence: 0x0003f20f Journal start: 175 Journal errno: -5 Cheers, --nwf;
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