I was attempting to convert from RAID1 to single on a 3 disk array using Ubuntu mainline kernel 3.4rc6 mount options iirc: space_cache,inode_cache,nodatacow,compress,autodefrag command: btrfs fi bal start -dconvert=single,soft /mnt The (hopefully) relevant log follows. Thanks, Kyle [38530.122963] btrfs: block rsv returned -28 [38530.122969] ------------[ cut here ]------------ [38530.123047] WARNING: at /home/apw/COD/linux/fs/btrfs/extent-tree.c:6219 use_block_rsv+0x16d/0x180 [btrfs]() [38530.123051] Hardware name: KT600-8237 [38530.123053] Modules linked in: rfcomm bnep bluetooth parport_pc ppdev nfsd nfs lockd binfmt_misc fscache auth_rpcgss nfs_acl sunrpc dm_crypt usblp snd_via82xx gameport snd_ac97_codec ac97_bus snd_pcm snd_page_alloc snd_mpu401_uart snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd psmouse soundcore serio_raw lm63 shpchp mac_hid hwmon_vid lm90 i2c_viapro lp parport btrfs zlib_deflate libcrc32c radeon ttm via_rhine drm_kms_helper drm i2c_algo_bit pata_via sata_via [38530.123094] Pid: 2197, comm: btrfs-endio-wri Not tainted 3.4.0-030400rc6-generic #201205061835 [38530.123097] Call Trace: [38530.123112] [<c1035832>] warn_slowpath_common+0x72/0xa0 [38530.123131] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38530.123150] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38530.123154] [<c1035882>] warn_slowpath_null+0x22/0x30 [38530.123173] [<f891ab9d>] use_block_rsv+0x16d/0x180 [btrfs] [38530.123192] [<f891feac>] btrfs_alloc_free_block+0x3c/0x2b0 [btrfs] [38530.123210] [<f890b388>] __btrfs_cow_block+0x148/0x560 [btrfs] [38530.123228] [<f890bead>] btrfs_cow_block+0xdd/0x220 [btrfs] [38530.123246] [<f890f929>] btrfs_search_slot+0x2c9/0x650 [btrfs] [38530.123265] [<f8922c35>] btrfs_lookup_file_extent+0x55/0x70 [btrfs] [38530.123289] [<f89402d7>] btrfs_drop_extents+0x117/0xb00 [btrfs] [38530.123299] [<c112aaf9>] ? kmem_cache_alloc+0x29/0x100 [38530.123322] [<f8953dad>] ? alloc_extent_state+0x1d/0xb0 [btrfs] [38530.123327] [<c112ab74>] ? kmem_cache_alloc+0xa4/0x100 [38530.123349] [<f8954ba3>] ? __set_extent_bit+0x323/0x670 [btrfs] [38530.123367] [<f890a0e7>] ? btrfs_alloc_path+0x17/0x20 [btrfs] [38530.123388] [<f893baa3>] T.1560+0x83/0x2b0 [btrfs] [38530.123409] [<f893c431>] btrfs_finish_ordered_io+0x3c1/0x480 [btrfs] [38530.123431] [<f893c534>] btrfs_writepage_end_io_hook+0x44/0xa0 [btrfs] [38530.123437] [<c157e5cf>] ? _raw_spin_lock_irqsave+0x2f/0x50 [38530.123445] [<c10ef313>] ? mempool_free_slab+0x13/0x20 [38530.123468] [<f8955dd9>] end_extent_writepage+0x69/0x120 [btrfs] [38530.123489] [<f893c4f0>] ? btrfs_finish_ordered_io+0x480/0x480 [btrfs] [38530.123512] [<f8955f43>] end_bio_extent_writepage+0xb3/0xe0 [btrfs] [38530.123518] [<c116897a>] bio_endio+0x1a/0x40 [38530.123537] [<f8928277>] end_workqueue_fn+0x37/0x50 [btrfs] [38530.123560] [<f8963405>] worker_loop+0x105/0x400 [btrfs] [38530.123582] [<f8963300>] ? check_pending_worker_creates+0xc0/0xc0 [btrfs] [38530.123590] [<c105463c>] kthread+0x7c/0x90 [38530.123594] [<c10545c0>] ? kthread_freezable_should_stop+0x60/0x60 [38530.123599] [<c1585bbe>] kernel_thread_helper+0x6/0x10 [38530.123603] ---[ end trace 519c34cc6a22875e ]--- [38530.123644] btrfs: block rsv returned -28 [38530.123647] ------------[ cut here ]------------ [38530.123667] WARNING: at /home/apw/COD/linux/fs/btrfs/extent-tree.c:6219 use_block_rsv+0x16d/0x180 [btrfs]() [38530.123670] Hardware name: KT600-8237 [38530.123672] Modules linked in: rfcomm bnep bluetooth parport_pc ppdev nfsd nfs lockd binfmt_misc fscache auth_rpcgss nfs_acl sunrpc dm_crypt usblp snd_via82xx gameport snd_ac97_codec ac97_bus snd_pcm snd_page_alloc snd_mpu401_uart snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd psmouse soundcore serio_raw lm63 shpchp mac_hid hwmon_vid lm90 i2c_viapro lp parport btrfs zlib_deflate libcrc32c radeon ttm via_rhine drm_kms_helper drm i2c_algo_bit pata_via sata_via [38530.123707] Pid: 2197, comm: btrfs-endio-wri Tainted: G W 3.4.0-030400rc6-generic #201205061835 [38530.123710] Call Trace: [38530.123716] [<c1035832>] warn_slowpath_common+0x72/0xa0 [38530.123734] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38530.123752] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38530.123757] [<c1035882>] warn_slowpath_null+0x22/0x30 [38530.123775] [<f891ab9d>] use_block_rsv+0x16d/0x180 [btrfs] [38530.123794] [<f891feac>] btrfs_alloc_free_block+0x3c/0x2b0 [btrfs] [38530.123813] [<f89276d4>] ? btree_set_page_dirty+0x34/0x50 [btrfs] [38530.123818] [<c10f4ae7>] ? set_page_dirty+0x37/0x60 [38530.123840] [<f89522f9>] ? set_extent_buffer_dirty+0x89/0xc0 [btrfs] [38530.123863] [<f8951a5b>] ? read_extent_buffer+0x9b/0xf0 [btrfs] [38530.123880] [<f890b388>] __btrfs_cow_block+0x148/0x560 [btrfs] [38530.123897] [<f890c82f>] ? balance_level+0xdf/0x740 [btrfs] [38530.123915] [<f890bead>] btrfs_cow_block+0xdd/0x220 [btrfs] [38530.123932] [<f890f929>] btrfs_search_slot+0x2c9/0x650 [btrfs] [38530.123951] [<f8922c35>] btrfs_lookup_file_extent+0x55/0x70 [btrfs] [38530.123973] [<f89402d7>] btrfs_drop_extents+0x117/0xb00 [btrfs] [38530.123979] [<c112aaf9>] ? kmem_cache_alloc+0x29/0x100 [38530.124001] [<f8953dad>] ? alloc_extent_state+0x1d/0xb0 [btrfs] [38530.124051] [<c112ab74>] ? kmem_cache_alloc+0xa4/0x100 [38530.124075] [<f8954ba3>] ? __set_extent_bit+0x323/0x670 [btrfs] [38530.124092] [<f890a0e7>] ? btrfs_alloc_path+0x17/0x20 [btrfs] [38530.124113] [<f893baa3>] T.1560+0x83/0x2b0 [btrfs] [38530.124134] [<f893c431>] btrfs_finish_ordered_io+0x3c1/0x480 [btrfs] [38530.124156] [<f893c534>] btrfs_writepage_end_io_hook+0x44/0xa0 [btrfs] [38530.124160] [<c157e5cf>] ? _raw_spin_lock_irqsave+0x2f/0x50 [38530.124165] [<c10ef313>] ? mempool_free_slab+0x13/0x20 [38530.124187] [<f8955dd9>] end_extent_writepage+0x69/0x120 [btrfs] [38530.124208] [<f893c4f0>] ? btrfs_finish_ordered_io+0x480/0x480 [btrfs] [38530.124231] [<f8955f43>] end_bio_extent_writepage+0xb3/0xe0 [btrfs] [38530.124235] [<c116897a>] bio_endio+0x1a/0x40 [38530.124254] [<f8928277>] end_workqueue_fn+0x37/0x50 [btrfs] [38530.124276] [<f8963405>] worker_loop+0x105/0x400 [btrfs] [38530.124298] [<f8963300>] ? check_pending_worker_creates+0xc0/0xc0 [btrfs] [38530.124303] [<c105463c>] kthread+0x7c/0x90 [38530.124307] [<c10545c0>] ? kthread_freezable_should_stop+0x60/0x60 [38530.124311] [<c1585bbe>] kernel_thread_helper+0x6/0x10 [38530.124314] ---[ end trace 519c34cc6a22875f ]--- [38557.411929] btrfs: found 1237 extents [38574.960680] btrfs: found 1237 extents [38575.335032] btrfs: relocating block group 446773067776 flags 17 [38575.849600] use_block_rsv: 25 callbacks suppressed [38575.849607] btrfs: block rsv returned -28 [38575.849609] ------------[ cut here ]------------ [38575.849691] WARNING: at /home/apw/COD/linux/fs/btrfs/extent-tree.c:6219 use_block_rsv+0x16d/0x180 [btrfs]() [38575.849695] Hardware name: KT600-8237 [38575.849697] Modules linked in: rfcomm bnep bluetooth parport_pc ppdev nfsd nfs lockd binfmt_misc fscache auth_rpcgss nfs_acl sunrpc dm_crypt usblp snd_via82xx gameport snd_ac97_codec ac97_bus snd_pcm snd_page_alloc snd_mpu401_uart snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd psmouse soundcore serio_raw lm63 shpchp mac_hid hwmon_vid lm90 i2c_viapro lp parport btrfs zlib_deflate libcrc32c radeon ttm via_rhine drm_kms_helper drm i2c_algo_bit pata_via sata_via [38575.849737] Pid: 574, comm: btrfs-endio-wri Tainted: G W 3.4.0-030400rc6-generic #201205061835 [38575.849741] Call Trace: [38575.849756] [<c1035832>] warn_slowpath_common+0x72/0xa0 [38575.849775] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38575.849793] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38575.849798] [<c1035882>] warn_slowpath_null+0x22/0x30 [38575.849816] [<f891ab9d>] use_block_rsv+0x16d/0x180 [btrfs] [38575.849849] [<f8978b9d>] ? btrfs_add_delayed_data_ref+0x7d/0x1d0 [btrfs] [38575.849868] [<f891feac>] btrfs_alloc_free_block+0x3c/0x2b0 [btrfs] [38575.849878] [<c12aa333>] ? rb_insert_color+0xd3/0x110 [38575.849901] [<f8978272>] ? tree_insert+0x62/0x80 [btrfs] [38575.849923] [<f8951a5b>] ? read_extent_buffer+0x9b/0xf0 [btrfs] [38575.849941] [<f890b388>] __btrfs_cow_block+0x148/0x560 [btrfs] [38575.849964] [<f894422f>] ? btrfs_item_offset+0xf/0x20 [btrfs] [38575.849981] [<f890bead>] btrfs_cow_block+0xdd/0x220 [btrfs] [38575.850000] [<f890f929>] btrfs_search_slot+0x2c9/0x650 [btrfs] [38575.850019] [<f892339f>] btrfs_lookup_csum+0x6f/0x170 [btrfs] [38575.850029] [<c112ab74>] ? kmem_cache_alloc+0xa4/0x100 [38575.850051] [<f8953ea7>] ? free_extent_state+0x47/0x90 [btrfs] [38575.850068] [<f890a0e7>] ? btrfs_alloc_path+0x17/0x20 [btrfs] [38575.850088] [<f8924286>] btrfs_csum_file_blocks+0xb6/0x670 [btrfs] [38575.850110] [<f8953ea7>] ? free_extent_state+0x47/0x90 [btrfs] [38575.850133] [<f8955884>] ? clear_extent_bit+0x124/0x500 [btrfs] [38575.850156] [<f89561d9>] ? unlock_extent_cached+0x49/0x60 [btrfs] [38575.850176] [<f8930a2d>] add_pending_csums+0x3d/0x60 [btrfs] [38575.850198] [<f893c344>] btrfs_finish_ordered_io+0x2d4/0x480 [btrfs] [38575.850219] [<f893c534>] btrfs_writepage_end_io_hook+0x44/0xa0 [btrfs] [38575.850225] [<c157e59d>] ? _raw_spin_lock+0xd/0x10 [38575.850248] [<f8955dd9>] end_extent_writepage+0x69/0x120 [btrfs] [38575.850269] [<f893c4f0>] ? btrfs_finish_ordered_io+0x480/0x480 [btrfs] [38575.850292] [<f8955f43>] end_bio_extent_writepage+0xb3/0xe0 [btrfs] [38575.850298] [<c116897a>] bio_endio+0x1a/0x40 [38575.850317] [<f8928277>] end_workqueue_fn+0x37/0x50 [btrfs] [38575.850339] [<f8963405>] worker_loop+0x105/0x400 [btrfs] [38575.850362] [<f8963300>] ? check_pending_worker_creates+0xc0/0xc0 [btrfs] [38575.850369] [<c105463c>] kthread+0x7c/0x90 [38575.850374] [<c10545c0>] ? kthread_freezable_should_stop+0x60/0x60 [38575.850379] [<c1585bbe>] kernel_thread_helper+0x6/0x10 [38575.850382] ---[ end trace 519c34cc6a228760 ]--- [38575.851598] btrfs: block rsv returned -28 [38575.851601] ------------[ cut here ]------------ [38575.851622] WARNING: at /home/apw/COD/linux/fs/btrfs/extent-tree.c:6219 use_block_rsv+0x16d/0x180 [btrfs]() [38575.851625] Hardware name: KT600-8237 [38575.851627] Modules linked in: rfcomm bnep bluetooth parport_pc ppdev nfsd nfs lockd binfmt_misc fscache auth_rpcgss nfs_acl sunrpc dm_crypt usblp snd_via82xx gameport snd_ac97_codec ac97_bus snd_pcm snd_page_alloc snd_mpu401_uart snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd psmouse soundcore serio_raw lm63 shpchp mac_hid hwmon_vid lm90 i2c_viapro lp parport btrfs zlib_deflate libcrc32c radeon ttm via_rhine drm_kms_helper drm i2c_algo_bit pata_via sata_via [38575.851664] Pid: 574, comm: btrfs-endio-wri Tainted: G W 3.4.0-030400rc6-generic #201205061835 [38575.851667] Call Trace: [38575.851673] [<c1035832>] warn_slowpath_common+0x72/0xa0 [38575.851781] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38575.851800] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38575.851805] [<c1035882>] warn_slowpath_null+0x22/0x30 [38575.851823] [<f891ab9d>] use_block_rsv+0x16d/0x180 [btrfs] [38575.851842] [<f891feac>] btrfs_alloc_free_block+0x3c/0x2b0 [btrfs] [38575.851864] [<f89441b6>] ? btrfs_token_item_offset+0x56/0xc0 [btrfs] [38575.851887] [<f8951a5b>] ? read_extent_buffer+0x9b/0xf0 [btrfs] [38575.851911] [<f890b388>] __btrfs_cow_block+0x148/0x560 [btrfs] [38575.851929] [<f890bead>] btrfs_cow_block+0xdd/0x220 [btrfs] [38575.851947] [<f890f929>] btrfs_search_slot+0x2c9/0x650 [btrfs] [38575.851966] [<f8922c35>] btrfs_lookup_file_extent+0x55/0x70 [btrfs] [38575.851987] [<f89402d7>] btrfs_drop_extents+0x117/0xb00 [btrfs] [38575.851993] [<c112aaf9>] ? kmem_cache_alloc+0x29/0x100 [38575.852039] [<f8953dad>] ? alloc_extent_state+0x1d/0xb0 [btrfs] [38575.852045] [<c112ab74>] ? kmem_cache_alloc+0xa4/0x100 [38575.852067] [<f8954ba3>] ? __set_extent_bit+0x323/0x670 [btrfs] [38575.852084] [<f890a0e7>] ? btrfs_alloc_path+0x17/0x20 [btrfs] [38575.852105] [<f893baa3>] T.1560+0x83/0x2b0 [btrfs] [38575.852126] [<f893c431>] btrfs_finish_ordered_io+0x3c1/0x480 [btrfs] [38575.852148] [<f893c534>] btrfs_writepage_end_io_hook+0x44/0xa0 [btrfs] [38575.852152] [<c157e59d>] ? _raw_spin_lock+0xd/0x10 [38575.852174] [<f8955dd9>] end_extent_writepage+0x69/0x120 [btrfs] [38575.852195] [<f893c4f0>] ? btrfs_finish_ordered_io+0x480/0x480 [btrfs] [38575.852218] [<f8955f43>] end_bio_extent_writepage+0xb3/0xe0 [btrfs] [38575.852222] [<c116897a>] bio_endio+0x1a/0x40 [38575.852241] [<f8928277>] end_workqueue_fn+0x37/0x50 [btrfs] [38575.852263] [<f8963405>] worker_loop+0x105/0x400 [btrfs] [38575.852286] [<f8963300>] ? check_pending_worker_creates+0xc0/0xc0 [btrfs] [38575.852291] [<c105463c>] kthread+0x7c/0x90 [38575.852295] [<c10545c0>] ? kthread_freezable_should_stop+0x60/0x60 [38575.852299] [<c1585bbe>] kernel_thread_helper+0x6/0x10 [38575.852302] ---[ end trace 519c34cc6a228761 ]--- [38612.107163] use_block_rsv: 8 callbacks suppressed [38612.107169] btrfs: block rsv returned -28 [38612.107172] ------------[ cut here ]------------ [38612.107251] WARNING: at /home/apw/COD/linux/fs/btrfs/extent-tree.c:6219 use_block_rsv+0x16d/0x180 [btrfs]() [38612.107255] Hardware name: KT600-8237 [38612.107257] Modules linked in: rfcomm bnep bluetooth parport_pc ppdev nfsd nfs lockd binfmt_misc fscache auth_rpcgss nfs_acl sunrpc dm_crypt usblp snd_via82xx gameport snd_ac97_codec ac97_bus snd_pcm snd_page_alloc snd_mpu401_uart snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd psmouse soundcore serio_raw lm63 shpchp mac_hid hwmon_vid lm90 i2c_viapro lp parport btrfs zlib_deflate libcrc32c radeon ttm via_rhine drm_kms_helper drm i2c_algo_bit pata_via sata_via [38612.107297] Pid: 2111, comm: btrfs-endio-wri Tainted: G W 3.4.0-030400rc6-generic #201205061835 [38612.107300] Call Trace: [38612.107316] [<c1035832>] warn_slowpath_common+0x72/0xa0 [38612.107335] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38612.107353] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38612.107358] [<c1035882>] warn_slowpath_null+0x22/0x30 [38612.107376] [<f891ab9d>] use_block_rsv+0x16d/0x180 [btrfs] [38612.107394] [<f890d4a1>] ? btrfs_leaf_free_space+0x41/0x90 [btrfs] [38612.107413] [<f891feac>] btrfs_alloc_free_block+0x3c/0x2b0 [btrfs] [38612.107431] [<f890da62>] ? setup_items_for_insert+0x242/0x2d0 [btrfs] [38612.107437] [<c157e59d>] ? _raw_spin_lock+0xd/0x10 [38612.107454] [<f8911724>] ? block_group_cache_tree_search+0x84/0x120 [btrfs] [38612.107481] [<f8951a5b>] ? read_extent_buffer+0x9b/0xf0 [btrfs] [38612.107498] [<f890b388>] __btrfs_cow_block+0x148/0x560 [btrfs] [38612.107506] [<c10f850b>] ? mark_page_accessed+0x3b/0x50 [38612.107524] [<f890bead>] btrfs_cow_block+0xdd/0x220 [btrfs] [38612.107542] [<f890f929>] btrfs_search_slot+0x2c9/0x650 [btrfs] [38612.107562] [<f892339f>] btrfs_lookup_csum+0x6f/0x170 [btrfs] [38612.107571] [<c112ab74>] ? kmem_cache_alloc+0xa4/0x100 [38612.107593] [<f8941688>] ? btrfs_mark_extent_written+0x828/0xaa0 [btrfs] [38612.107681] [<f890a0e7>] ? btrfs_alloc_path+0x17/0x20 [btrfs] [38612.107702] [<f8924286>] btrfs_csum_file_blocks+0xb6/0x670 [btrfs] [38612.107725] [<f8953ea7>] ? free_extent_state+0x47/0x90 [btrfs] [38612.107748] [<f8955884>] ? clear_extent_bit+0x124/0x500 [btrfs] [38612.107770] [<f89561d9>] ? unlock_extent_cached+0x49/0x60 [btrfs] [38612.107791] [<f8930a2d>] add_pending_csums+0x3d/0x60 [btrfs] [38612.107812] [<f893c344>] btrfs_finish_ordered_io+0x2d4/0x480 [btrfs] [38612.107834] [<f893c534>] btrfs_writepage_end_io_hook+0x44/0xa0 [btrfs] [38612.107839] [<c112a4b0>] ? kmem_cache_free+0xc0/0xd0 [38612.107847] [<c10ef313>] ? mempool_free_slab+0x13/0x20 [38612.107851] [<c10ef313>] ? mempool_free_slab+0x13/0x20 [38612.107874] [<f8955dd9>] end_extent_writepage+0x69/0x120 [btrfs] [38612.107895] [<f893c4f0>] ? btrfs_finish_ordered_io+0x480/0x480 [btrfs] [38612.107918] [<f8955f43>] end_bio_extent_writepage+0xb3/0xe0 [btrfs] [38612.107924] [<c116897a>] bio_endio+0x1a/0x40 [38612.107943] [<f8928277>] end_workqueue_fn+0x37/0x50 [btrfs] [38612.107966] [<f8963405>] worker_loop+0x105/0x400 [btrfs] [38612.107989] [<f8963300>] ? check_pending_worker_creates+0xc0/0xc0 [btrfs] [38612.107996] [<c105463c>] kthread+0x7c/0x90 [38612.108041] [<c10545c0>] ? kthread_freezable_should_stop+0x60/0x60 [38612.108047] [<c1585bbe>] kernel_thread_helper+0x6/0x10 [38612.108051] ---[ end trace 519c34cc6a228762 ]--- [38612.144494] btrfs: block rsv returned -28 [38612.144499] ------------[ cut here ]------------ [38612.144572] WARNING: at /home/apw/COD/linux/fs/btrfs/extent-tree.c:6219 use_block_rsv+0x16d/0x180 [btrfs]() [38612.144576] Hardware name: KT600-8237 [38612.144578] Modules linked in: rfcomm bnep bluetooth parport_pc ppdev nfsd nfs lockd binfmt_misc fscache auth_rpcgss nfs_acl sunrpc dm_crypt usblp snd_via82xx gameport snd_ac97_codec ac97_bus snd_pcm snd_page_alloc snd_mpu401_uart snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd psmouse soundcore serio_raw lm63 shpchp mac_hid hwmon_vid lm90 i2c_viapro lp parport btrfs zlib_deflate libcrc32c radeon ttm via_rhine drm_kms_helper drm i2c_algo_bit pata_via sata_via [38612.144618] Pid: 2197, comm: btrfs-endio-wri Tainted: G W 3.4.0-030400rc6-generic #201205061835 [38612.144621] Call Trace: [38612.144636] [<c1035832>] warn_slowpath_common+0x72/0xa0 [38612.144655] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38612.144673] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38612.144678] [<c1035882>] warn_slowpath_null+0x22/0x30 [38612.144696] [<f891ab9d>] use_block_rsv+0x16d/0x180 [btrfs] [38612.144714] [<f890d4a1>] ? btrfs_leaf_free_space+0x41/0x90 [btrfs] [38612.144733] [<f891feac>] btrfs_alloc_free_block+0x3c/0x2b0 [btrfs] [38612.144751] [<f890da62>] ? setup_items_for_insert+0x242/0x2d0 [btrfs] [38612.144757] [<c157e59d>] ? _raw_spin_lock+0xd/0x10 [38612.144774] [<f890b388>] __btrfs_cow_block+0x148/0x560 [btrfs] [38612.144792] [<f890bead>] btrfs_cow_block+0xdd/0x220 [btrfs] [38612.144810] [<f890f929>] btrfs_search_slot+0x2c9/0x650 [btrfs] [38612.144830] [<f892339f>] btrfs_lookup_csum+0x6f/0x170 [btrfs] [38612.144839] [<c112ab74>] ? kmem_cache_alloc+0xa4/0x100 [38612.144863] [<f8941688>] ? btrfs_mark_extent_written+0x828/0xaa0 [btrfs] [38612.144880] [<f890a0e7>] ? btrfs_alloc_path+0x17/0x20 [btrfs] [38612.144900] [<f8924286>] btrfs_csum_file_blocks+0xb6/0x670 [btrfs] [38612.144923] [<f8953ea7>] ? free_extent_state+0x47/0x90 [btrfs] [38612.144945] [<f8955884>] ? clear_extent_bit+0x124/0x500 [btrfs] [38612.144968] [<f89561d9>] ? unlock_extent_cached+0x49/0x60 [btrfs] [38612.144989] [<f8930a2d>] add_pending_csums+0x3d/0x60 [btrfs] [38612.145010] [<f893c344>] btrfs_finish_ordered_io+0x2d4/0x480 [btrfs] [38612.145032] [<f893c534>] btrfs_writepage_end_io_hook+0x44/0xa0 [btrfs] [38612.145036] [<c157e59d>] ? _raw_spin_lock+0xd/0x10 [38612.145058] [<f8955dd9>] end_extent_writepage+0x69/0x120 [btrfs] [38612.145080] [<f893c4f0>] ? btrfs_finish_ordered_io+0x480/0x480 [btrfs] [38612.145102] [<f8955f43>] end_bio_extent_writepage+0xb3/0xe0 [btrfs] [38612.145108] [<c116897a>] bio_endio+0x1a/0x40 [38612.145128] [<f8928277>] end_workqueue_fn+0x37/0x50 [btrfs] [38612.145151] [<f8963405>] worker_loop+0x105/0x400 [btrfs] [38612.145174] [<f8963300>] ? check_pending_worker_creates+0xc0/0xc0 [btrfs] [38612.145181] [<c105463c>] kthread+0x7c/0x90 [38612.145185] [<c10545c0>] ? kthread_freezable_should_stop+0x60/0x60 [38612.145190] [<c1585bbe>] kernel_thread_helper+0x6/0x10 [38612.145194] ---[ end trace 519c34cc6a228763 ]--- [38612.678492] btrfs: found 189 extents [38619.633548] btrfs: found 189 extents [38620.238583] btrfs: relocating block group 445699325952 flags 17 [38620.325525] use_block_rsv: 3 callbacks suppressed [38620.325531] btrfs: block rsv returned -28 [38620.325534] ------------[ cut here ]------------ [38620.325607] WARNING: at /home/apw/COD/linux/fs/btrfs/extent-tree.c:6219 use_block_rsv+0x16d/0x180 [btrfs]() [38620.325611] Hardware name: KT600-8237 [38620.325613] Modules linked in: rfcomm bnep bluetooth parport_pc ppdev nfsd nfs lockd binfmt_misc fscache auth_rpcgss nfs_acl sunrpc dm_crypt usblp snd_via82xx gameport snd_ac97_codec ac97_bus snd_pcm snd_page_alloc snd_mpu401_uart snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd psmouse soundcore serio_raw lm63 shpchp mac_hid hwmon_vid lm90 i2c_viapro lp parport btrfs zlib_deflate libcrc32c radeon ttm via_rhine drm_kms_helper drm i2c_algo_bit pata_via sata_via [38620.325653] Pid: 2111, comm: btrfs-endio-wri Tainted: G W 3.4.0-030400rc6-generic #201205061835 [38620.325656] Call Trace: [38620.325671] [<c1035832>] warn_slowpath_common+0x72/0xa0 [38620.325690] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38620.325708] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38620.325713] [<c1035882>] warn_slowpath_null+0x22/0x30 [38620.325732] [<f891ab9d>] use_block_rsv+0x16d/0x180 [btrfs] [38620.325751] [<f891feac>] btrfs_alloc_free_block+0x3c/0x2b0 [btrfs] [38620.325777] [<f895154b>] ? map_private_extent_buffer+0x7b/0xe0 [btrfs] [38620.325800] [<f895154b>] ? map_private_extent_buffer+0x7b/0xe0 [btrfs] [38620.325822] [<f8951a5b>] ? read_extent_buffer+0x9b/0xf0 [btrfs] [38620.325840] [<f890b388>] __btrfs_cow_block+0x148/0x560 [btrfs] [38620.325858] [<f890bead>] btrfs_cow_block+0xdd/0x220 [btrfs] [38620.325876] [<f890f929>] btrfs_search_slot+0x2c9/0x650 [btrfs] [38620.325896] [<f892487b>] btrfs_lookup_inode+0x3b/0xb0 [btrfs] [38620.325918] [<f8933367>] btrfs_update_inode_item+0x57/0x100 [btrfs] [38620.325939] [<f89351b3>] btrfs_update_inode_fallback+0x43/0x50 [btrfs] [38620.325960] [<f893c375>] btrfs_finish_ordered_io+0x305/0x480 [btrfs] [38620.325982] [<f893c534>] btrfs_writepage_end_io_hook+0x44/0xa0 [btrfs] [38620.325988] [<c157e59d>] ? _raw_spin_lock+0xd/0x10 [38620.326011] [<f8955dd9>] end_extent_writepage+0x69/0x120 [btrfs] [38620.326032] [<f893c4f0>] ? btrfs_finish_ordered_io+0x480/0x480 [btrfs] [38620.326056] [<f8955f43>] end_bio_extent_writepage+0xb3/0xe0 [btrfs] [38620.326062] [<c116897a>] bio_endio+0x1a/0x40 [38620.326081] [<f8928277>] end_workqueue_fn+0x37/0x50 [btrfs] [38620.326104] [<f8963405>] worker_loop+0x105/0x400 [btrfs] [38620.326127] [<f8963300>] ? check_pending_worker_creates+0xc0/0xc0 [btrfs] [38620.326135] [<c105463c>] kthread+0x7c/0x90 [38620.326139] [<c10545c0>] ? kthread_freezable_should_stop+0x60/0x60 [38620.326144] [<c1585bbe>] kernel_thread_helper+0x6/0x10 [38620.326148] ---[ end trace 519c34cc6a228764 ]--- [38620.326557] btrfs: block rsv returned -28 [38620.326560] ------------[ cut here ]------------ [38620.326581] WARNING: at /home/apw/COD/linux/fs/btrfs/extent-tree.c:6219 use_block_rsv+0x16d/0x180 [btrfs]() [38620.326585] Hardware name: KT600-8237 [38620.326586] Modules linked in: rfcomm bnep bluetooth parport_pc ppdev nfsd nfs lockd binfmt_misc fscache auth_rpcgss nfs_acl sunrpc dm_crypt usblp snd_via82xx gameport snd_ac97_codec ac97_bus snd_pcm snd_page_alloc snd_mpu401_uart snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd psmouse soundcore serio_raw lm63 shpchp mac_hid hwmon_vid lm90 i2c_viapro lp parport btrfs zlib_deflate libcrc32c radeon ttm via_rhine drm_kms_helper drm i2c_algo_bit pata_via sata_via [38620.326622] Pid: 2111, comm: btrfs-endio-wri Tainted: G W 3.4.0-030400rc6-generic #201205061835 [38620.326625] Call Trace: [38620.326631] [<c1035832>] warn_slowpath_common+0x72/0xa0 [38620.326650] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38620.326668] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38620.326673] [<c1035882>] warn_slowpath_null+0x22/0x30 [38620.326691] [<f891ab9d>] use_block_rsv+0x16d/0x180 [btrfs] [38620.326710] [<f891feac>] btrfs_alloc_free_block+0x3c/0x2b0 [btrfs] [38620.326734] [<f89441b6>] ? btrfs_token_item_offset+0x56/0xc0 [btrfs] [38620.326752] [<f890b388>] __btrfs_cow_block+0x148/0x560 [btrfs] [38620.326759] [<c10f850b>] ? mark_page_accessed+0x3b/0x50 [38620.326776] [<f890bead>] btrfs_cow_block+0xdd/0x220 [btrfs] [38620.326794] [<f890f929>] btrfs_search_slot+0x2c9/0x650 [btrfs] [38620.326814] [<f8922c35>] btrfs_lookup_file_extent+0x55/0x70 [btrfs] [38620.326835] [<f89402d7>] btrfs_drop_extents+0x117/0xb00 [btrfs] [38620.326845] [<c112aaf9>] ? kmem_cache_alloc+0x29/0x100 [38620.326867] [<f8953dad>] ? alloc_extent_state+0x1d/0xb0 [btrfs] [38620.326872] [<c112ab74>] ? kmem_cache_alloc+0xa4/0x100 [38620.326895] [<f8954ba3>] ? __set_extent_bit+0x323/0x670 [btrfs] [38620.326912] [<f890a0e7>] ? btrfs_alloc_path+0x17/0x20 [btrfs] [38620.326933] [<f893baa3>] T.1560+0x83/0x2b0 [btrfs] [38620.326954] [<f893c431>] btrfs_finish_ordered_io+0x3c1/0x480 [btrfs] [38620.326976] [<f893c534>] btrfs_writepage_end_io_hook+0x44/0xa0 [btrfs] [38620.326980] [<c157e59d>] ? _raw_spin_lock+0xd/0x10 [38620.327003] [<f8955dd9>] end_extent_writepage+0x69/0x120 [btrfs] [38620.327024] [<f893c4f0>] ? btrfs_finish_ordered_io+0x480/0x480 [btrfs] [38620.327047] [<f8955f43>] end_bio_extent_writepage+0xb3/0xe0 [btrfs] [38620.327051] [<c116897a>] bio_endio+0x1a/0x40 [38620.327071] [<f8928277>] end_workqueue_fn+0x37/0x50 [btrfs] [38620.327092] [<f8963405>] worker_loop+0x105/0x400 [btrfs] [38620.327115] [<f8963300>] ? check_pending_worker_creates+0xc0/0xc0 [btrfs] [38620.327120] [<c105463c>] kthread+0x7c/0x90 [38620.327124] [<c10545c0>] ? kthread_freezable_should_stop+0x60/0x60 [38620.327129] [<c1585bbe>] kernel_thread_helper+0x6/0x10 [38620.327131] ---[ end trace 519c34cc6a228765 ]--- [38643.277402] btrfs: found 266 extents [38644.788650] use_block_rsv: 17 callbacks suppressed [38644.788656] btrfs: block rsv returned -28 [38644.788658] ------------[ cut here ]------------ [38644.788731] WARNING: at /home/apw/COD/linux/fs/btrfs/extent-tree.c:6219 use_block_rsv+0x16d/0x180 [btrfs]() [38644.788735] Hardware name: KT600-8237 [38644.788737] Modules linked in: rfcomm bnep bluetooth parport_pc ppdev nfsd nfs lockd binfmt_misc fscache auth_rpcgss nfs_acl sunrpc dm_crypt usblp snd_via82xx gameport snd_ac97_codec ac97_bus snd_pcm snd_page_alloc snd_mpu401_uart snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd psmouse soundcore serio_raw lm63 shpchp mac_hid hwmon_vid lm90 i2c_viapro lp parport btrfs zlib_deflate libcrc32c radeon ttm via_rhine drm_kms_helper drm i2c_algo_bit pata_via sata_via [38644.788776] Pid: 2197, comm: btrfs-endio-wri Tainted: G W 3.4.0-030400rc6-generic #201205061835 [38644.788780] Call Trace: [38644.788794] [<c1035832>] warn_slowpath_common+0x72/0xa0 [38644.788813] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38644.788831] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38644.788836] [<c1035882>] warn_slowpath_null+0x22/0x30 [38644.788854] [<f891ab9d>] use_block_rsv+0x16d/0x180 [btrfs] [38644.788874] [<f891feac>] btrfs_alloc_free_block+0x3c/0x2b0 [btrfs] [38644.788894] [<f89276d4>] ? btree_set_page_dirty+0x34/0x50 [btrfs] [38644.788900] [<c10f4ae7>] ? set_page_dirty+0x37/0x60 [38644.788925] [<f89522f9>] ? set_extent_buffer_dirty+0x89/0xc0 [btrfs] [38644.788949] [<f894a727>] ? btrfs_set_token_extent_inline_ref_offset+0x57/0xe0 [btrfs] [38644.788971] [<f8951a5b>] ? read_extent_buffer+0x9b/0xf0 [btrfs] [38644.788989] [<f890b388>] __btrfs_cow_block+0x148/0x560 [btrfs] [38644.789007] [<f890bead>] btrfs_cow_block+0xdd/0x220 [btrfs] [38644.789025] [<f890f929>] btrfs_search_slot+0x2c9/0x650 [btrfs] [38644.789045] [<f8922c35>] btrfs_lookup_file_extent+0x55/0x70 [btrfs] [38644.789066] [<f89402d7>] btrfs_drop_extents+0x117/0xb00 [btrfs] [38644.789076] [<c112aaf9>] ? kmem_cache_alloc+0x29/0x100 [38644.789098] [<f8953dad>] ? alloc_extent_state+0x1d/0xb0 [btrfs] [38644.789103] [<c112ab74>] ? kmem_cache_alloc+0xa4/0x100 [38644.789120] [<f890a0e7>] ? btrfs_alloc_path+0x17/0x20 [btrfs] [38644.789141] [<f893baa3>] T.1560+0x83/0x2b0 [btrfs] [38644.789163] [<f893c431>] btrfs_finish_ordered_io+0x3c1/0x480 [btrfs] [38644.789171] [<c1054a90>] ? autoremove_wake_function+0x20/0x50 [38644.789192] [<f893c534>] btrfs_writepage_end_io_hook+0x44/0xa0 [btrfs] [38644.789200] [<c105ced8>] ? __wake_up_common+0x48/0x70 [38644.789223] [<f8955dd9>] end_extent_writepage+0x69/0x120 [btrfs] [38644.789227] [<c10549fe>] ? __wake_up_bit+0x2e/0x30 [38644.789248] [<f893c4f0>] ? btrfs_finish_ordered_io+0x480/0x480 [btrfs] [38644.789271] [<f8955f43>] end_bio_extent_writepage+0xb3/0xe0 [btrfs] [38644.789277] [<c116897a>] bio_endio+0x1a/0x40 [38644.789296] [<f8928277>] end_workqueue_fn+0x37/0x50 [btrfs] [38644.789319] [<f8963405>] worker_loop+0x105/0x400 [btrfs] [38644.789342] [<f8963300>] ? check_pending_worker_creates+0xc0/0xc0 [btrfs] [38644.789346] [<c105463c>] kthread+0x7c/0x90 [38644.789351] [<c10545c0>] ? kthread_freezable_should_stop+0x60/0x60 [38644.789357] [<c1585bbe>] kernel_thread_helper+0x6/0x10 [38644.789360] ---[ end trace 519c34cc6a228766 ]--- [38645.942943] btrfs: block rsv returned -28 [38645.942949] ------------[ cut here ]------------ [38645.943028] WARNING: at /home/apw/COD/linux/fs/btrfs/extent-tree.c:6219 use_block_rsv+0x16d/0x180 [btrfs]() [38645.943032] Hardware name: KT600-8237 [38645.943034] Modules linked in: rfcomm bnep bluetooth parport_pc ppdev nfsd nfs lockd binfmt_misc fscache auth_rpcgss nfs_acl sunrpc dm_crypt usblp snd_via82xx gameport snd_ac97_codec ac97_bus snd_pcm snd_page_alloc snd_mpu401_uart snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd psmouse soundcore serio_raw lm63 shpchp mac_hid hwmon_vid lm90 i2c_viapro lp parport btrfs zlib_deflate libcrc32c radeon ttm via_rhine drm_kms_helper drm i2c_algo_bit pata_via sata_via [38645.943075] Pid: 2111, comm: btrfs-endio-wri Tainted: G W 3.4.0-030400rc6-generic #201205061835 [38645.943078] Call Trace: [38645.943093] [<c1035832>] warn_slowpath_common+0x72/0xa0 [38645.943112] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38645.943130] [<f891ab9d>] ? use_block_rsv+0x16d/0x180 [btrfs] [38645.943135] [<c1035882>] warn_slowpath_null+0x22/0x30 [38645.943154] [<f891ab9d>] use_block_rsv+0x16d/0x180 [btrfs] [38645.943174] [<f891feac>] btrfs_alloc_free_block+0x3c/0x2b0 [btrfs] [38645.943183] [<c157db43>] ? io_schedule+0x93/0xc0 [38645.943188] [<c157c2a2>] ? __wait_on_bit+0x62/0x70 [38645.943195] [<c10ecea0>] ? __lock_page+0x90/0x90 [38645.943221] [<f8951a5b>] ? read_extent_buffer+0x9b/0xf0 [btrfs] [38645.943238] [<f890b388>] __btrfs_cow_block+0x148/0x560 [btrfs] [38645.943245] [<c10f850b>] ? mark_page_accessed+0x3b/0x50 [38645.943263] [<f890bead>] btrfs_cow_block+0xdd/0x220 [btrfs] [38645.943281] [<f890f929>] btrfs_search_slot+0x2c9/0x650 [btrfs] [38645.943301] [<f892339f>] btrfs_lookup_csum+0x6f/0x170 [btrfs] [38645.943310] [<c112ab74>] ? kmem_cache_alloc+0xa4/0x100 [38645.943327] [<f890a0e7>] ? btrfs_alloc_path+0x17/0x20 [btrfs] [38645.943347] [<f8924286>] btrfs_csum_file_blocks+0xb6/0x670 [btrfs] [38645.943370] [<f8953ea7>] ? free_extent_state+0x47/0x90 [btrfs] [38645.943393] [<f8955884>] ? clear_extent_bit+0x124/0x500 [btrfs] [38645.943416] [<f89561d9>] ? unlock_extent_cached+0x49/0x60 [btrfs] [38645.943436] [<f8930a2d>] add_pending_csums+0x3d/0x60 [btrfs] [38645.943458] [<f893c344>] btrfs_finish_ordered_io+0x2d4/0x480 [btrfs] [38645.943480] [<f893c534>] btrfs_writepage_end_io_hook+0x44/0xa0 [btrfs] [38645.943485] [<c10ef313>] ? mempool_free_slab+0x13/0x20 [38645.943508] [<f8955dd9>] end_extent_writepage+0x69/0x120 [btrfs] [38645.943529] [<f893c4f0>] ? btrfs_finish_ordered_io+0x480/0x480 [btrfs] [38645.943552] [<f8955f43>] end_bio_extent_writepage+0xb3/0xe0 [btrfs] [38645.943558] [<c116897a>] bio_endio+0x1a/0x40 [38645.943578] [<f8928277>] end_workqueue_fn+0x37/0x50 [btrfs] [38645.943600] [<f8963405>] worker_loop+0x105/0x400 [btrfs] [38645.943623] [<f8963300>] ? check_pending_worker_creates+0xc0/0xc0 [btrfs] [38645.943631] [<c105463c>] kthread+0x7c/0x90 [38645.943635] [<c10545c0>] ? kthread_freezable_should_stop+0x60/0x60 [38645.943640] [<c1585bbe>] kernel_thread_helper+0x6/0x10 [38645.943644] ---[ end trace 519c34cc6a228767 ]--- [38655.940334] btrfs: found 266 extents [38656.256212] btrfs: relocating block group 444625584128 flags 17 [38656.319608] ------------[ cut here ]------------ [38656.319689] WARNING: at /home/apw/COD/linux/fs/btrfs/super.c:219 __btrfs_abort_transaction+0x99/0xb0 [btrfs]() [38656.319693] Hardware name: KT600-8237 [38656.319695] btrfs: Transaction aborted [38656.319698] Modules linked in: rfcomm bnep bluetooth parport_pc ppdev nfsd nfs lockd binfmt_misc fscache auth_rpcgss nfs_acl sunrpc dm_crypt usblp snd_via82xx gameport snd_ac97_codec ac97_bus snd_pcm snd_page_alloc snd_mpu401_uart snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd psmouse soundcore serio_raw lm63 shpchp mac_hid hwmon_vid lm90 i2c_viapro lp parport btrfs zlib_deflate libcrc32c radeon ttm via_rhine drm_kms_helper drm i2c_algo_bit pata_via sata_via [38656.319738] Pid: 22814, comm: btrfs Tainted: G W 3.4.0-030400rc6-generic #201205061835 [38656.319741] Call Trace: [38656.319756] [<c1035832>] warn_slowpath_common+0x72/0xa0 [38656.319773] [<f89074f9>] ? __btrfs_abort_transaction+0x99/0xb0 [btrfs] [38656.319790] [<f89074f9>] ? __btrfs_abort_transaction+0x99/0xb0 [btrfs] [38656.319796] [<c1035903>] warn_slowpath_fmt+0x33/0x40 [38656.319813] [<f89074f9>] __btrfs_abort_transaction+0x99/0xb0 [btrfs] [38656.319841] [<f8933d23>] cow_file_range_inline+0x2b3/0x2c0 [btrfs] [38656.319862] [<f89340ef>] cow_file_range+0x3bf/0x640 [btrfs] [38656.319887] [<f895325b>] ? free_extent_buffer+0x2b/0x60 [btrfs] [38656.319909] [<f8938b1f>] run_delalloc_nocow+0x24f/0x980 [btrfs] [38656.319931] [<f893931b>] run_delalloc_range+0xcb/0x120 [btrfs] [38656.319953] [<f895926f>] __extent_writepage+0x4bf/0x920 [btrfs] [38656.319976] [<f8955e90>] ? end_extent_writepage+0x120/0x120 [btrfs] [38656.319984] [<c10f7e4c>] ? release_pages+0x15c/0x1a0 [38656.319991] [<c10ec9a9>] ? find_get_pages_tag+0xb9/0x150 [38656.320013] [<f8959add>] T.1400+0x22d/0x2e0 [btrfs] [38656.320082] [<f895203f>] ? submit_one_bio+0x9f/0xc0 [btrfs] [38656.320104] [<f8930eb0>] ? btrfs_readpage_end_io_hook+0x2a0/0x2a0 [btrfs] [38656.320126] [<f8959bd7>] extent_writepages+0x47/0x60 [btrfs] [38656.320147] [<f8939920>] ? btrfs_real_readdir+0x5b0/0x5b0 [btrfs] [38656.320168] [<f8932495>] btrfs_writepages+0x25/0x30 [btrfs] [38656.320173] [<c10f5bec>] do_writepages+0x1c/0x40 [38656.320177] [<c10ed6ad>] __filemap_fdatawrite_range+0x5d/0x70 [38656.320182] [<c10ed99b>] filemap_flush+0x2b/0x30 [38656.320202] [<f892fe99>] btrfs_start_delalloc_inodes+0xc9/0x1e0 [btrfs] [38656.320230] [<f89808d0>] btrfs_relocate_block_group+0x160/0x2c0 [btrfs] [38656.320253] [<f895cd31>] btrfs_relocate_chunk+0x71/0x3b0 [btrfs] [38656.320276] [<f895325b>] ? free_extent_buffer+0x2b/0x60 [btrfs] [38656.320299] [<f895de89>] __btrfs_balance+0x369/0x430 [btrfs] [38656.320322] [<f895ee95>] btrfs_balance+0x495/0x610 [btrfs] [38656.320331] [<c112b09f>] ? __kmalloc+0x12f/0x1c0 [38656.320353] [<f8966ac1>] btrfs_ioctl_balance+0xe1/0x1e0 [btrfs] [38656.320376] [<f8969315>] btrfs_ioctl+0xa5/0x760 [btrfs] [38656.320399] [<f8969270>] ? btrfs_ioctl_balance_progress+0xd0/0xd0 [btrfs] [38656.320405] [<c114b5c6>] do_vfs_ioctl+0x86/0x2d0 [38656.320409] [<c114b887>] sys_ioctl+0x77/0x80 [38656.320415] [<c158561f>] sysenter_do_call+0x12/0x28 [38656.320419] ---[ end trace 519c34cc6a228768 ]--- [38656.320424] BTRFS error (device sda6) in cow_file_range_inline:261: error 28 [38656.320427] btrfs is forced readonly [38656.322417] BTRFS error (device sda6) in cow_file_range:871: error 28 [38656.322432] BTRFS error (device sda6) in run_delalloc_nocow:1333: error 28 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html