Then, 30 minutes later there is no change, so I suppose it's "frozen". I hope it can help : [ 8081.557019] SysRq : Show Blocked State [ 8081.557034] task PC stack pid father [ 8081.557053] btrfs-transacti D ffff8802bfc12080 0 1788 2 0x00000000 [ 8081.557064] ffff8802af9e39f0 0000000000000246 ffffffffa0042250 ffffffff816133f0 [ 8081.557076] 0000000000012080 ffff8802a9d7bfd8 ffff8802a9d7bfd8 ffff8802af9e39f0 [ 8081.557088] ffffffff8107ba5f ffff8802957632e8 ffff8802af7241e8 ffff8802a9d7bdf0 [ 8081.557099] Call Trace: [ 8081.557124] [<ffffffffa0042250>] ? start_transaction+0x13b/0x366 [btrfs] [ 8081.557137] [<ffffffff8107ba5f>] ? arch_local_irq_restore+0x7/0x8 [ 8081.557157] [<ffffffffa0040fdf>] ? wait_current_trans.isra.33+0xb3/0xe7 [btrfs] [ 8081.557168] [<ffffffff8106051a>] ? abort_exclusive_wait+0x79/0x79 [ 8081.557187] [<ffffffffa0042454>] ? start_transaction+0x33f/0x366 [btrfs] [ 8081.557206] [<ffffffffa003b60e>] ? transaction_kthread+0xbe/0x183 [btrfs] [ 8081.557224] [<ffffffffa003b550>] ? try_to_freeze+0x2c/0x2c [btrfs] [ 8081.557240] [<ffffffffa003b550>] ? try_to_freeze+0x2c/0x2c [btrfs] [ 8081.557249] [<ffffffff8105fc53>] ? kthread+0x81/0x89 [ 8081.557258] [<ffffffff81002c46>] ? xen_mc_issue.constprop.27+0x6/0x1e [ 8081.557267] [<ffffffff81060000>] ? kthread_unpark+0x2a/0x41 [ 8081.557275] [<ffffffff8105fbd2>] ? __kthread_parkme+0x5b/0x5b [ 8081.557285] [<ffffffff8132db3c>] ? ret_from_fork+0x7c/0xb0 [ 8081.557293] [<ffffffff8105fbd2>] ? __kthread_parkme+0x5b/0x5b [ 8081.557304] mount D ffff8802bfc12080 0 2642 2595 0x00000000 [ 8081.557314] ffff8802b031b9f0 0000000000000286 000000000000000e ffffffff816133f0 [ 8081.557325] 0000000000012080 ffff8802afdebfd8 ffff8802afdebfd8 ffff8802b031b9f0 [ 8081.557336] ffffffff8107ba5f ffff8802aa2b6810 ffff8802afdeb7b0 ffff8802afdeb7c8 [ 8081.557348] Call Trace: [ 8081.557355] [<ffffffff8107ba5f>] ? arch_local_irq_restore+0x7/0x8 [ 8081.557376] [<ffffffffa0066660>] ? btrfs_tree_lock+0xcf/0x224 [btrfs] [ 8081.557399] [<ffffffffa0057941>] ? alloc_extent_buffer+0x6f/0x2d6 [btrfs] [ 8081.557408] [<ffffffff8106051a>] ? abort_exclusive_wait+0x79/0x79 [ 8081.557426] [<ffffffffa00338c4>] ? btrfs_init_new_buffer+0x5a/0xe2 [btrfs] [ 8081.557443] [<ffffffffa0033aeb>] ? btrfs_alloc_free_block+0x19f/0x29d [btrfs] [ 8081.557454] [<ffffffff810a7e26>] ? __set_page_dirty_nobuffers+0xc4/0xe0 [ 8081.557468] [<ffffffffa00261a8>] ? __btrfs_cow_block+0xf2/0x372 [btrfs] [ 8081.557483] [<ffffffffa0026551>] ? btrfs_cow_block+0xee/0xfd [btrfs] [ 8081.557498] [<ffffffffa00290e8>] ? btrfs_search_slot+0x234/0x660 [btrfs] [ 8081.557513] [<ffffffffa002a475>] ? btrfs_insert_empty_items+0x5d/0xae [btrfs] [ 8081.557531] [<ffffffffa0032b0a>] ? run_clustered_refs+0x4b1/0x81d [btrfs] [ 8081.557540] [<ffffffff8107ba5f>] ? arch_local_irq_restore+0x7/0x8 [ 8081.557557] [<ffffffffa00350eb>] ? btrfs_run_delayed_refs+0xea/0x22e [btrfs] [ 8081.557577] [<ffffffffa00418c8>] ? btrfs_commit_transaction+0x3e8/0x927 [btrfs] [ 8081.557587] [<ffffffff8106051a>] ? abort_exclusive_wait+0x79/0x79 [ 8081.557605] [<ffffffffa0041f8e>] ? __btrfs_end_transaction+0x158/0x2c4 [btrfs] [ 8081.557621] [<ffffffffa002ba70>] ? spin_unlock+0x5/0x8 [btrfs] [ 8081.557638] [<ffffffffa0033f34>] ? btrfs_drop_snapshot+0x34b/0x4b5 [btrfs] [ 8081.557659] [<ffffffffa0077b95>] ? merge_reloc_roots+0xe0/0x113 [btrfs] [ 8081.557679] [<ffffffffa007874f>] ? btrfs_recover_relocation+0x26c/0x32b [btrfs] [ 8081.557693] [<ffffffffa0023cd8>] ? btrfs_remount+0x10c/0x1c8 [btrfs] [ 8081.557702] [<ffffffff810e7a52>] ? do_raw_spin_unlock+0x5/0x8 [ 8081.557711] [<ffffffff810dc07f>] ? do_remount_sb+0xb1/0x155 [ 8081.557719] [<ffffffff810f0304>] ? do_mount+0x1ff/0x6d7 [ 8081.557726] [<ffffffff810f0861>] ? sys_mount+0x85/0xbf [ 8081.557734] [<ffffffff8132dbe9>] ? system_call_fastpath+0x16/0x1b -- 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
