Hi, Running on kernel 3.0 without patches. Mount options for the btrfs partition in question were `defaults, noatime, compress=lzo, space_cache, autodefrag, inoce_cache'. Partition cannot be mounted again with a 3.0 kernel after reboot. Partition can, however, be mounted successfully with a 2.6.38 kernel (Ubuntu patches) without options, and afterwards successfully with the 3.0 kernel.
> Aug 1 11:12:22 Eve kernel: [ 154.594512] ------------[ cut here > ]------------ > Aug 1 11:12:22 Eve kernel: [ 154.594541] kernel BUG at fs/btrfs/inode.c:794! > Aug 1 11:12:22 Eve kernel: [ 154.594554] invalid opcode: 0000 [#1] PREEMPT > SMP > Aug 1 11:12:22 Eve kernel: [ 154.594573] CPU 0 > Aug 1 11:12:22 Eve kernel: [ 154.594586] Modules linked in: cryptd > aes_x86_64 aes_generic vboxnetadp vboxnetflt vboxdrv binfmt_misc parport_pc > ppdev snd_hda_codec_realtek uvcvideo snd_hda_intel dell_wmi snd_hda_codec > videodev dell_laptop joydev arc4 v4l2_compat_ioctl32 coretemp snd_hwdep > snd_pcm snd_seq_midi lp psmouse serio_raw snd_rawmidi snd_seq_midi_event > iwl4965 iwl_legacy r8169 mac80211 snd_seq snd_timer snd_seq_device > sparse_keymap snd cfg80211 dcdbas parport soundcore snd_page_alloc nouveau > ahci libahci ttm drm_kms_helper drm i2c_algo_bit mxm_wmi video btrfs > zlib_deflate libcrc32c > Aug 1 11:12:22 Eve kernel: [ 154.594740] > Aug 1 11:12:22 Eve kernel: [ 154.594745] Pid: 801, comm: btrfs-transacti > Not tainted 3.0.0-vanilla #1 Dell Inc. Vostro1310/0G930C > Aug 1 11:12:22 Eve kernel: [ 154.594762] RIP: 0010:[<ffffffffa004604c>] > [<ffffffffa004604c>] cow_file_range+0x37c/0x390 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.594793] RSP: 0018:ffff880132c63550 > EFLAGS: 00010246 > Aug 1 11:12:22 Eve kernel: [ 154.594801] RAX: ffff88013628c000 RBX: > 0000000000001000 RCX: 00000000000a5fff > Aug 1 11:12:22 Eve kernel: [ 154.594811] RDX: ffff8801362dd000 RSI: > ffffea0003a25100 RDI: ffff88012894d158 > Aug 1 11:12:22 Eve kernel: [ 154.594820] RBP: ffff880132c63600 R08: > ffff880132c6389c R09: ffff880132c63880 > Aug 1 11:12:22 Eve kernel: [ 154.594829] R10: 0000000000000002 R11: > 0000000000000000 R12: 0000000000000000 > Aug 1 11:12:22 Eve kernel: [ 154.594948] R13: 00000000000a5fff R14: > ffff88012894cfc0 R15: ffff88012894d158 > Aug 1 11:12:22 Eve kernel: [ 154.594959] FS: 0000000000000000(0000) > GS:ffff88013fc00000(0000) knlGS:0000000000000000 > Aug 1 11:12:22 Eve kernel: [ 154.594969] CS: 0010 DS: 0000 ES: 0000 CR0: > 000000008005003b > Aug 1 11:12:22 Eve kernel: [ 154.594978] CR2: 00007fe916cb3000 CR3: > 000000000174b000 CR4: 00000000000006f0 > Aug 1 11:12:22 Eve kernel: [ 154.594987] DR0: 0000000000000000 DR1: > 0000000000000000 DR2: 0000000000000000 > Aug 1 11:12:22 Eve kernel: [ 154.594998] DR3: 0000000000000000 DR6: > 00000000ffff0ff0 DR7: 0000000000000400 > Aug 1 11:12:22 Eve kernel: [ 154.595008] Process btrfs-transacti (pid: 801, > threadinfo ffff880132c62000, task ffff880137d0c020) > Aug 1 11:12:22 Eve kernel: [ 154.595019] Stack: > Aug 1 11:12:22 Eve kernel: [ 154.595024] ffff880136dbac60 ffff880137f3c000 > fffffffffffffff6 00001d21f1800080 > Aug 1 11:12:22 Eve kernel: [ 154.595042] 0000000000000000 0000001d21e9a000 > ffffea0003a25100 00001d21f1800080 > Aug 1 11:12:22 Eve kernel: [ 154.595060] ffff8801362dd000 ffff880132c6389c > ffff880132c63880 ffff88012894cfe0 > Aug 1 11:12:22 Eve kernel: [ 154.595078] Call Trace: > Aug 1 11:12:22 Eve kernel: [ 154.595097] [<ffffffffa00463af>] > run_delalloc_nocow+0x34f/0x830 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595119] [<ffffffffa005eae7>] ? > free_extent_state+0x37/0x60 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595143] [<ffffffffa0046c0c>] > run_delalloc_range+0x37c/0x380 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595158] [<ffffffff81106cd9>] ? > zone_statistics+0x99/0xc0 > Aug 1 11:12:22 Eve kernel: [ 154.595178] [<ffffffffa0061d25>] > __extent_writepage+0x5d5/0x730 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595191] [<ffffffff812c8b8d>] ? > radix_tree_gang_lookup_tag_slot+0x8d/0xd0 > Aug 1 11:12:22 Eve kernel: [ 154.595212] [<ffffffffa00620ca>] > extent_write_cache_pages.clone.18.clone.25+0x24a/0x300 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffffa0062425>] > extent_writepages+0x45/0x60 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffffa0042d30>] ? > btrfs_real_readdir+0x650/0x650 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffffa005eae6>] ? > free_extent_state+0x36/0x60 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffffa00414c7>] > btrfs_writepages+0x27/0x30 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffff810f41f1>] > do_writepages+0x21/0x40 > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffff810ea51b>] > __filemap_fdatawrite_range+0x5b/0x60 > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffff810eb39f>] > filemap_fdatawrite+0x1f/0x30 > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffff810eb3e5>] > filemap_write_and_wait+0x35/0x60 > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffffa007b2cb>] > __btrfs_write_out_cache+0xa6b/0xc90 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffffa0044f16>] ? > __btrfs_prealloc_file_range+0x196/0x220 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffff81160e5a>] ? > igrab+0x3a/0x70 > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffffa007d679>] > btrfs_write_out_ino_cache+0x99/0xd0 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffffa00362fe>] > btrfs_save_ino_cache+0x16e/0x260 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffffa003daf2>] > commit_fs_roots.clone.21+0xc2/0x1a0 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffffa001a60a>] ? > btrfs_free_path+0x2a/0x40 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffffa003ead1>] > btrfs_commit_transaction+0x471/0x900 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffffa003dd1c>] ? > join_transaction.clone.23+0x5c/0x230 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffffa003f2f9>] ? > start_transaction+0x99/0x2e0 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffff8106eea0>] ? > wake_up_bit+0x40/0x40 > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffffa0037563>] > transaction_kthread+0x273/0x290 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffffa00372f0>] ? > btrfs_congested_fn+0xc0/0xc0 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffff8106e896>] > kthread+0x96/0xa0 > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffff81580494>] > kernel_thread_helper+0x4/0x10 > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffff8106e800>] ? > kthread_worker_fn+0x190/0x190 > Aug 1 11:12:22 Eve kernel: [ 154.595435] [<ffffffff81580490>] ? > gs_change+0xb/0xb > Aug 1 11:12:22 Eve kernel: [ 154.595435] Code: c0 5b 41 5c 41 5d 41 5e 41 > 5f c9 c3 4c 89 95 70 ff ff ff 4c 89 fe 48 8b 7d 88 e8 10 7b 00 00 4c 8b 95 70 > ff ff ff e9 55 fd ff ff <0f> 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 1f 84 00 00 > 00 00 00 55 > Aug 1 11:12:22 Eve kernel: [ 154.595435] RIP [<ffffffffa004604c>] > cow_file_range+0x37c/0x390 [btrfs] > Aug 1 11:12:22 Eve kernel: [ 154.595435] RSP <ffff880132c63550> > Aug 1 11:12:22 Eve kernel: [ 154.636938] ---[ end trace b93d3aede109651a > ]--- Please tell if you need anything else, Jonathan Yip
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