Hi Doing a btrfsck and then mounting with -o recovery finally worked. All seems well again. Best regards Michael Am 03.11.2013 23:50, schrieb Michael Eitelwein: > Hi > > My computer froze and I had to power-cycle the PC. After reboot, > attempting to mount the btrfs volume leads to a kernel oops: > > [ 970.140850] device fsid 65db2d61-0301-42c0-9f1b-94dd215f694c devid 1 > transid 119849 /dev/sda3 > [ 970.141475] btrfs: disk space caching is enabled > [ 991.149365] ------------[ cut here ]------------ > [ 991.149378] kernel BUG at > /build/buildd/linux-3.2.0/fs/btrfs/free-space-cache.c:1515! > [ 991.149386] invalid opcode: 0000 [#1] SMP > [ 991.149393] CPU 3 > [ 991.149397] Modules linked in: des_generic md4 nls_utf8 cifs > ip6table_filter ip6_tables ebtable_nat ebtables pci_stub vboxpci(O) > vboxnetadp(O) vboxnetflt(O) vboxdrv(O) ipt_MASQUERADE iptable_nat nf_nat > nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT > xt_CHECKSUM iptable_mangle xt_tcpudp iptable_filter ip_tables x_tables > kvm_amd kvm bnep rfcomm parport_pc ppdev binfmt_misc dm_crypt btusb > bluetooth snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel > snd_hda_codec bridge stp snd_hwdep snd_pcm snd_seq_midi snd_rawmidi > snd_seq_midi_event snd_seq snd_timer snd_seq_device snd edac_core > k10temp sp5100_tco i2c_piix4 edac_mce_amd soundcore snd_page_alloc > psmouse serio_raw mac_hid lp parport btrfs zlib_deflate libcrc32c > firewire_ohci firewire_core usbhid hid crc_itu_t floppy pata_atiixp wmi > r8169 > [ 991.149516] > [ 991.149523] Pid: 4020, comm: mount Tainted: G O > 3.2.0-32-generic #51-Ubuntu To Be Filled By O.E.M. To Be Filled By > O.E.M./AOD790GX/128M > [ 991.149536] RIP: 0010:[<ffffffffa00f2d38>] [<ffffffffa00f2d38>] > remove_from_bitmap+0x248/0x250 [btrfs] > [ 991.149590] RSP: 0018:ffff8801726e1698 EFLAGS: 00010286 > [ 991.149596] RAX: 00000000ffffffff RBX: ffff880120ade700 RCX: > 0000000000000003 > [ 991.149602] RDX: 0000000000008001 RSI: 0000000000008000 RDI: > ffff8801a0911000 > [ 991.149608] RBP: ffff8801726e16f8 R08: ffff8801a0912000 R09: > 0000000000008000 > [ 991.149614] R10: ffff880000000000 R11: 0010a78154000000 R12: > 0000002c49c00000 > [ 991.149620] R13: ffff8801726e1718 R14: ffff8801726e1720 R15: > ffff8801819b8840 > [ 991.149627] FS: 00007f9e6f719800(0000) GS:ffff8801afd80000(0000) > knlGS:00000000f75b86c0 > [ 991.149633] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > [ 991.149639] CR2: 00007ff9027b2110 CR3: 0000000159472000 CR4: > 00000000000006e0 > [ 991.149645] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > 0000000000000000 > [ 991.149651] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > 0000000000000400 > [ 991.149658] Process mount (pid: 4020, threadinfo ffff8801726e0000, > task ffff8801727b4500) > [ 991.149663] Stack: > [ 991.149666] ffff880172682600 ffff880172682600 ffff880172682640 > ffff8801819b8864 > [ 991.149678] 0000002c43303000 000000000000a000 0000000000000286 > ffff8801819b8840 > [ 991.149688] 0000000000000000 ffff8801819b8864 ffff880120ade700 > 0000000000000000 > [ 991.149698] Call Trace: > [ 991.149742] [<ffffffffa00f3f99>] btrfs_remove_free_space+0x69/0x330 > [btrfs] > [ 991.149779] [<ffffffffa00ae270>] > btrfs_alloc_logged_file_extent+0x1c0/0x1e0 [btrfs] > [ 991.149811] [<ffffffffa009c93a>] ? btrfs_free_path+0x2a/0x40 [btrfs] > [ 991.149849] [<ffffffffa00ef2f8>] replay_one_extent+0x518/0x570 [btrfs] > [ 991.149861] [<ffffffff8108abc0>] ? autoremove_wake_function+0x40/0x40 > [ 991.149901] [<ffffffffa00efe2b>] replay_one_buffer+0x26b/0x330 [btrfs] > [ 991.149941] [<ffffffffa00dcb74>] ? alloc_extent_buffer+0x74/0x410 > [btrfs] > [ 991.149979] [<ffffffffa00eccea>] walk_down_log_tree+0x1ea/0x3b0 [btrfs] > [ 991.150017] [<ffffffffa00ed1ad>] walk_log_tree+0xbd/0x1d0 [btrfs] > [ 991.150056] [<ffffffffa00f0ea1>] btrfs_recover_log_trees+0x211/0x300 > [btrfs] > [ 991.150095] [<ffffffffa00efbc0>] ? > fixup_inode_link_counts+0x150/0x150 [btrfs] > [ 991.150133] [<ffffffffa00bb635>] open_ctree+0x14b5/0x1950 [btrfs] > [ 991.150145] [<ffffffff81316eb4>] ? snprintf+0x34/0x40 > [ 991.150178] [<ffffffffa010abe2>] btrfs_fill_super.isra.37+0x72/0x12c > [btrfs] > [ 991.150189] [<ffffffff811e4711>] ? disk_name+0x61/0xc0 > [ 991.150197] [<ffffffff813144d7>] ? strlcpy+0x47/0x60 > [ 991.150226] [<ffffffffa009a897>] btrfs_mount+0x497/0x4e0 [btrfs] > [ 991.150242] [<ffffffff8117bad3>] mount_fs+0x43/0x1b0 > [ 991.150254] [<ffffffff8119637a>] vfs_kern_mount+0x6a/0xc0 > [ 991.150265] [<ffffffff81197884>] do_kern_mount+0x54/0x110 > [ 991.150274] [<ffffffff811993e4>] do_mount+0x1a4/0x260 > [ 991.150282] [<ffffffff811998c0>] sys_mount+0x90/0xe0 > [ 991.150292] [<ffffffff81663442>] system_call_fastpath+0x16/0x1b > [ 991.150297] Code: e9 7d fe ff ff 66 0f 1f 44 00 00 b8 ea ff ff ff e9 > c8 fe ff ff 48 89 de 4c 89 ff 89 45 b0 e8 80 e4 ff ff 8b 45 b0 e9 b2 fe > ff ff <0f> 0b 0f 0b 0f 1f 40 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 > [ 991.150373] RIP [<ffffffffa00f2d38>] remove_from_bitmap+0x248/0x250 > [btrfs] > [ 991.150409] RSP <ffff8801726e1698> > [ 991.150415] ---[ end trace 9a242a0fd54d816f ]--- > > How can I fix this? > > Michael
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