Le jeudi 12 mai 2011 Ã 11:40 -0400, Josef Bacik a Ãcrit : > Did you happen to get dmesg from that? It seems that you got disk > errors while writing out the supers, which points to a hardware > problem, but having the full dmesg would be good to say for sure. > Thanks, What I got in syslog is below. Note this machine has been converted to BTRFS 2 days ago and never suffered any HW issue before. I know coincidences happen, but... At the time the BTRFS spit the error out, I was just opening an (ext3) encrypted volume that resides on my HD, i.e. (script) losetup file => loopback device cryptsetup luksOpen loopback device Mount. I'd done it several times before without issue, but as BTRFS spit BUG at the exact same time... Here's from my syslog at the time the error happened : May 12 15:44:34 tethys kernel: [22017.035070] btrfs_end_buffer_write_sync: 15 callbacks suppressed May 12 15:44:34 tethys kernel: [22017.035074] lost page write due to I/O error on dm-3 May 12 15:44:34 tethys kernel: [22017.035162] lost page write due to I/O error on dm-3 May 12 15:44:34 tethys kernel: [22017.035235] lost page write due to I/O error on dm-3 May 12 15:44:34 tethys kernel: [22017.035240] btrfs: 1 errors while writing supers May 12 15:44:34 tethys kernel: [22017.035272] ------------[ cut here ]------------ May 12 15:44:34 tethys kernel: [22017.035308] kernel BUG at /build/buildd/linux-2.6.38/fs/btrfs/disk-io.c:2349! May 12 15:44:34 tethys kernel: [22017.035353] invalid opcode: 0000 [#1] SMP May 12 15:44:34 tethys kernel: [22017.035387] last sysfs file: /sys/devices/virtual/block/loop0/queue/rotational May 12 15:44:34 tethys kernel: [22017.035433] Modules linked in: cdc_acm binfmt_misc rfcomm sco bnep l2cap vboxnetadp vboxnetflt vboxdrv kvm_intel kvm parport_pc ppdev arc4 joydev iwl3945 r852 sm_common uvcvideo iwlcore nand nand_ids nand_ecc psmouse coretemp mtd snd_hda_codec_hdmi videodev dell_laptop btusb snd_hda_codec_idt snd_hda_intel snd_hda_c odec dell_wmi lp snd_hwdep mac80211 serio_raw snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq cfg80211 bl uetooth dcdbas snd_timer snd_seq_device snd parport soundcore snd_page_alloc sparse_keymap btrfs zlib_deflate libcrc3 2c nls_iso8859_1 nls_cp437 vfat fat dm_crypt sha256_generic aes_i586 aes_generic usb_storage usbhid hid mmc_block i91 5 drm_kms_helper drm firewire_ohci ahci sdhci_pci sdhci tg3 i2c_algo_bit video firewire_core crc_itu_t libahci May 12 15:44:34 tethys kernel: [22017.036081] May 12 15:44:34 tethys kernel: [22017.036095] Pid: 19975, comm: sync Not tainted 2.6.38-8-generic #42-Ubuntu Dell Inc . XPS M1330 /0N6705 May 12 15:44:34 tethys kernel: [22017.036178] EIP: 0060:[<f8cad9f0>] EFLAGS: 00010292 CPU: 0 May 12 15:44:34 tethys kernel: [22017.036229] EIP is at write_all_supers +0x280/0x290 [btrfs] May 12 15:44:34 tethys kernel: [22017.036265] EAX: 0000003a EBX: d7684720 ECX: c1739ba8 EDX: 00000000 May 12 15:44:34 tethys kernel: [22017.036306] ESI: 00000001 EDI: d7684720 EBP: c5e77f08 ESP: c5e77ed4 May 12 15:44:34 tethys kernel: [22017.036345] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 May 12 15:44:34 tethys kernel: [22017.036380] Process sync (pid: 19975, ti=c5e76000 task=f6ace500 task.ti=c5e76000) May 12 15:44:34 tethys kernel: [22017.036426] Stack: May 12 15:44:34 tethys kernel: [22017.036441] f8cfddac 00000001 00000003 00000000 00000000 e2a4ad77 00000001 dae38000 May 12 15:44:34 tethys kernel: [22017.036511] d76846c0 00000000 effa3390 f3886a80 e2a4b8a0 c5e77f10 f8cada11 c5e77f54 May 12 15:44:34 tethys kernel: [22017.036581] f8cb1840 00000000 00000001 dae38000 00000000 00000000 f3886a80 00000000 May 12 15:44:34 tethys kernel: [22017.036651] Call Trace: May 12 15:44:34 tethys kernel: [22017.036687] [<f8cada11>] write_ctree_super+0x11/0x20 [btrfs] May 12 15:44:34 tethys kernel: [22017.036740] [<f8cb1840>] btrfs_commit_transaction+0x540/0x700 [btrfs] May 12 15:44:34 tethys kernel: [22017.036787] [<c106d370>] ? autoremove_wake_function+0x0/0x50 May 12 15:44:34 tethys kernel: [22017.036838] [<f8c8f87e>] btrfs_sync_fs+0x3e/0x70 [btrfs] May 12 15:44:34 tethys kernel: [22017.036875] [<c114c63c>] __sync_filesystem+0x5c/0x90 May 12 15:44:34 tethys kernel: [22017.036908] [<c114c687>] sync_one_sb +0x17/0x20 May 12 15:44:34 tethys kernel: [22017.036939] [<c1129cfc>] iterate_supers+0x6c/0xb0 May 12 15:44:34 tethys kernel: [22017.036972] [<c114c670>] ? sync_one_sb+0x0/0x20 May 12 15:44:34 tethys kernel: [22017.037004] [<c114c59b>] sync_filesystems+0x1b/0x20 May 12 15:44:34 tethys kernel: [22017.037038] [<c114c700>] sys_sync +0x20/0x40 May 12 15:44:34 tethys kernel: [22017.037069] [<c1509bf4>] syscall_call +0x7/0xb May 12 15:44:34 tethys kernel: [22017.037098] Code: c4 28 31 c0 5b 5e 5f 5d c3 89 44 24 04 c7 04 24 ac dd cf f8 e8 71 97 85 c8 0f 0b 89 74 24 04 c7 04 24 ac dd cf f8 e8 5f 97 85 c8 <0f> 0b 8d b4 26 00 00 00 00 8d bc 27 00 00 00 00 55 89 e5 3e 8d May 12 15:44:34 tethys kernel: [22017.037410] EIP: [<f8cad9f0>] write_all_supers+0x280/0x290 [btrfs] SS:ESP 0068:c5e77ed4 May 12 15:44:34 tethys kernel: [22017.066355] ---[ end trace 280ae79e021f9d49 ]--- TIA. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
