The root file system has deteriorated since out of space. That's what I was able to collect data. # uname -a Linux Rescue 3.11.6-4-default #1 SMP Wed Oct 30 18:04:56 UTC 2013 (e6d4a27) x86_64 x86_64 x86_64 GNU/Linux # btrfs fi show Label: none uuid: 4556f023-2d76-4f37-9ba0-7d51848e8722 Total devices 1 FS bytes used 7.70GiB devid 1 size 69.78GiB used 34.02GiB path /dev/sda3 Label: none uuid: a1e9fe89-453f-4c27-bae3-dd247dc88114 Total devices 1 FS bytes used 10.49GiB devid 1 size 40.00GiB used 40.00GiB path /dev/sda2 Btrfs v0.20-rc1+20130701 # btrfs fi df /mnt/root Data: total=37.49GiB, used=9.94GiB System: total=4.00MiB, used=12.00KiB Metadata: total=2.51GiB, used=568.14MiB Copy from btrfs fail, see 'cp_fail.txt' attachment. Unmount fail: [ 94.506974] device fsid a1e9fe89-453f-4c27-bae3-dd247dc88114 devid 1 transid 621186 /dev/sda2 [ 94.507638] btrfs: disk space caching is enabled [ 94.527343] Btrfs detected SSD devices, enabling SSD mode [ 927.200621] ------------[ cut here ]------------ [ 927.200630] kernel BUG at /home/abuild/rpmbuild/BUILD/kernel-default-3.11.6/linux-3.11/fs/btrfs/inode.c:879! [ 927.200635] invalid opcode: 0000 [#1] SMP [ 927.200639] Modules linked in: btrfs raid6_pq zlib_deflate xor libcrc32c dm_mod nls_utf8 parport_pc parport arc4 ecb nfs lockd fscache nls_iso8859_1 nls_cp437 hid_generic usbhid af_packet sg st usb_storage sunrpc eeepc_wmi asus_wmi sparse_keymap rfkill i915 xhci_hcd ehci_pci ehci_hcd crc32_pclmul usbcore crc32c_intel drm_kms_helper ghash_clmulni_intel drm aesni_intel ablk_helper cryptd lrw gf128mul glue_helper aes_x86_64 e1000 sr_mod cdrom usb_common lpc_ich r8169 mfd_core mii i2c_algo_bit fan thermal mperf wmi video processor button thermal_sys edd squashfs loop [ 927.200676] CPU: 1 PID: 1701 Comm: umount Not tainted 3.11.6-4-default #1 [ 927.200679] Hardware name: System manufacturer System Product Name/P8Z77-V LX, BIOS 1902 04/12/2013 [ 927.200683] task: ffff8801097b2400 ti: ffff880133a32000 task.ti: ffff880133a32000 [ 927.200686] RIP: 0010:[<ffffffffa0471b77>] [<ffffffffa0471b77>] __cow_file_range+0x437/0x4d0 [btrfs] [ 927.200701] RSP: 0018:ffff880133a33700 EFLAGS: 00010202 [ 927.200704] RAX: 0000000000001000 RBX: 0000000000000000 RCX: 000000000000010c [ 927.200708] RDX: 000000000000010c RSI: ffff880404f35638 RDI: ffff880383b679f0 [ 927.200711] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000ffff [ 927.200714] R10: 0000000000010000 R11: 0000000000010000 R12: 0000000000000000 [ 927.200717] R13: ffff880404f35638 R14: ffff880101b93880 R15: 0000000000000000 [ 927.200720] FS: 00007f4d640d8840(0000) GS:ffff88041fa40000(0000) knlGS:0000000000000000 [ 927.200724] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 927.200727] CR2: 00007f4d63c95200 CR3: 00000004077d9000 CR4: 00000000001407e0 [ 927.200730] Stack: [ 927.200732] ffff880101b937f0 00000000000001f8 ffff880404f35478 ffff880406068800 [ 927.200737] 0000000000c10000 ffff8803feaeecd0 ffff8803feaeecd0 ffff880383b679f0 [ 927.200741] ffffea000074c3f8 f60000000000c000 80ffffffffffffff 000000000000ffff [ 927.200745] Call Trace: [ 927.200793] [<ffffffffa0471f8c>] run_delalloc_nocow+0x37c/0xb40 [btrfs] [ 927.200828] [<ffffffffa0472b4a>] run_delalloc_range+0x32a/0x390 [btrfs] [ 927.200865] [<ffffffffa0488e8f>] __extent_writepage+0x32f/0x7c0 [btrfs] [ 927.200911] [<ffffffffa0489530>] extent_write_cache_pages.isra.33.constprop.50+0x210/0x350 [btrfs] [ 927.200956] [<ffffffffa0489928>] extent_writepages+0x48/0x60 [btrfs] [ 927.200996] [<ffffffff81119a69>] __filemap_fdatawrite_range+0x49/0x50 [ 927.201009] [<ffffffffa0483d2f>] btrfs_wait_ordered_range+0x3f/0xf0 [btrfs] [ 927.201051] [<ffffffffa04a862e>] __btrfs_write_out_cache+0x6fe/0x8f0 [btrfs] [ 927.201106] [<ffffffffa04a8af9>] btrfs_write_out_cache+0x99/0xd0 [btrfs] [ 927.201161] [<ffffffffa045bede>] btrfs_write_dirty_block_groups+0x54e/0x620 [btrfs] [ 927.201187] [<ffffffffa04d1d7b>] commit_cowonly_roots+0x1d7/0x223 [btrfs] [ 927.201217] [<ffffffffa046b241>] btrfs_commit_transaction+0x431/0x970 [btrfs] [ 927.201251] [<ffffffffa0466737>] btrfs_commit_super+0x87/0x100 [btrfs] [ 927.201280] [<ffffffffa0466980>] close_ctree+0x1d0/0x270 [btrfs] [ 927.201304] [<ffffffff8117d0dd>] generic_shutdown_super+0x4d/0xd0 [ 927.201310] [<ffffffff8117d489>] kill_anon_super+0x9/0x20 [ 927.201317] [<ffffffffa04408fd>] btrfs_kill_super+0xd/0x80 [btrfs] [ 927.201326] [<ffffffff8117d813>] deactivate_locked_super+0x33/0x50 [ 927.201332] [<ffffffff8119890c>] SyS_umount+0x8c/0x380 [ 927.201338] [<ffffffff8156eeed>] system_call_fastpath+0x1a/0x1f [ 927.201344] [<00007f4d639bf9a7>] 0x7f4d639bf9a6 [ 927.201347] Code: 7c 24 38 4c 89 ee e8 d9 a9 00 00 e9 7d fc ff ff 48 85 d2 74 4f 80 be 30 fe ff ff 84 48 89 d1 74 43 48 83 f9 01 0f 84 2b fc ff ff <0f> 0b 48 8b 74 24 18 48 8b 7c 24 38 41 89 c0 b9 a1 03 00 00 48 [ 927.201370] RIP [<ffffffffa0471b77>] __cow_file_range+0x437/0x4d0 [btrfs] [ 927.201380] RSP <ffff880133a33700> [ 927.201383] ---[ end trace f922064c6bb8d1dc ]---
Created attachment 136731 [details] Copy failed
This is a semi-automated bugzilla cleanup, report is against an old kernel version. If the problem still happens, please open a new bug. Thanks.