I've been using btrfs for a while as my /home (converted from ext4; encrypted lvm) when it died on me. Mounting it crashes immediately, here's a log:
[ 6.455721] ------------[ cut here ]------------ [ 6.456117] kernel BUG at fs/btrfs/inode.c:4586! [ 6.456117] invalid opcode: 0000 [#1] SMP [ 6.456117] CPU 0 [ 6.456117] Modules linked in: btrfs zlib_deflate libcrc32c [ 6.456117] [ 6.456117] Pid: 243, comm: mount Not tainted 2.6.40.3-0.fc15.x86_64 #1 Bochs Bochs [ 6.456117] RIP: 0010:[<ffffffffa0035642>] [<ffffffffa0035642>] btrfs_add_link+0x123/0x17c [btrfs] [ 6.456117] RSP: 0018:ffff880007ac9838 EFLAGS: 00010282 [ 6.456117] RAX: 00000000ffffffef RBX: ffff880003ec3938 RCX: 0000000000000ed7 [ 6.456117] RDX: 0000000000000ed6 RSI: 000060fff8e013b0 RDI: ffffea00000da3b0 [ 6.456117] RBP: ffff880007ac98a8 R08: ffffffffa00123af R09: 0000000000000b23 [ 6.456117] R10: 0000000000000b23 R11: 0000000000000002 R12: ffff880003ec3548 [ 6.456117] R13: ffff880007863000 R14: 000000000000000d R15: ffff880007798500 [ 6.456117] FS: 00007effe7241820(0000) GS:ffff880006e00000(0000) knlGS:0000000000000000 [ 6.456117] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6.456117] CR2: 00007effe62cc580 CR3: 0000000007b7c000 CR4: 00000000000006f0 [ 6.456117] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 6.456117] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 6.456117] Process mount (pid: 243, threadinfo ffff880007ac8000, task ffff880002d40000) [ 6.456117] Stack: [ 6.456117] ffff880000000001 00000000000002cb ffff880007ac9878 ffff880003e5d000 [ 6.456117] 0000000000000000 3fff880002c5f000 0100000000002894 0000000000000000 [ 6.456117] 0000000000001000 ffff880003e5a120 ffff880003ec3548 ffff880007ac99c7 [ 6.456117] Call Trace: [ 6.456117] [<ffffffffa005646e>] add_inode_ref+0x2e6/0x37c [btrfs] [ 6.456117] [<ffffffffa00493f6>] ? read_extent_buffer+0xc3/0xe3 [btrfs] [ 6.456117] [<ffffffffa0056e14>] replay_one_buffer+0x197/0x212 [btrfs] [ 6.456117] [<ffffffffa0054e94>] walk_down_log_tree+0x15a/0x2c1 [btrfs] [ 6.456117] [<ffffffffa005507a>] walk_log_tree+0x7f/0x19e [btrfs] [ 6.456117] [<ffffffff8123a8d9>] ? radix_tree_lookup+0xb/0xd [ 6.456117] [<ffffffffa0058148>] btrfs_recover_log_trees+0x28b/0x298 [btrfs] [ 6.456117] [<ffffffffa0056c7d>] ? replay_one_dir_item+0xbd/0xbd [btrfs] [ 6.456117] [<ffffffffa002a192>] open_ctree+0x10f1/0x13ff [btrfs] [ 6.456117] [<ffffffffa0010861>] btrfs_mount+0x233/0x496 [btrfs] [ 6.456117] [<ffffffff810f43fc>] ? pcpu_next_pop+0x3d/0x4a [ 6.456117] [<ffffffff810f54ca>] ? pcpu_alloc+0x7f7/0x833 [ 6.456117] [<ffffffff81129b74>] mount_fs+0x69/0x155 [ 6.456117] [<ffffffff810f5516>] ? __alloc_percpu+0x10/0x12 [ 6.456117] [<ffffffff8113d905>] vfs_kern_mount+0x63/0x9d [ 6.456117] [<ffffffff8113e288>] do_kern_mount+0x4d/0xdf [ 6.456117] [<ffffffff8113f90d>] do_mount+0x63c/0x69f [ 6.456117] [<ffffffff810f1225>] ? memdup_user+0x55/0x7d [ 6.456117] [<ffffffff810f1288>] ? strndup_user+0x3b/0x51 [ 6.456117] [<ffffffff8113fbf2>] sys_mount+0x88/0xc2 [ 6.456117] [<ffffffff8148e182>] system_call_fastpath+0x16/0x1b [ 6.456117] Code: 89 f1 4c 89 fa 4c 89 ee 48 89 44 24 08 41 8b 04 24 66 c1 e8 0c 83 e0 0f 0f b6 80 78 eb 06 a0 89 04 24 e8 8c d5 fe ff 85 c0 74 02 <0f> 0b 45 01 f6 4d 63 f6 4c 03 b3 d0 00 00 00 4c 89 b3 d0 00 00 [ 6.456117] RIP [<ffffffffa0035642>] btrfs_add_link+0x123/0x17c [btrfs] [ 6.456117] RSP <ffff880007ac9838> [ 6.592232] ---[ end trace 44b5956456a7dc01 ]--- Tried btrfsck, immediate segfault. Both kernel and btrfsprogs are stock Fedora 15. I still have the logical volume and would like to recover it. Its fairly easy to try out things in a virtual machine, so if you have a patch you want me to try out, I'm here. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
