Hello, When trying to rsync to btrfs, the process just hangs. dmesg output alternates between: Jan 28 09:42:49 vostro kernel: [ 360.460076] INFO: task rsync:3484 blocked for more than 120 seconds. Jan 28 09:42:49 vostro kernel: [ 360.460079] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Jan 28 09:42:49 vostro kernel: [ 360.460081] rsync D ffff88009d8d7850 0 3484 1 0x00000004 Jan 28 09:42:49 vostro kernel: [ 360.460085] ffff88009d8d7850 0000000000000082 0000000000000000 ffff88009b4d1810 Jan 28 09:42:49 vostro kernel: [ 360.460089] 0000000000012f40 ffff880092361fd8 ffff880092361fd8 ffff88009d8d7850 Jan 28 09:42:49 vostro kernel: [ 360.460092] 0000000000000246 ffffffff8132de1c ffff88009b5342f0 ffff880094051e80 Jan 28 09:42:49 vostro kernel: [ 360.460096] Call Trace: Jan 28 09:42:49 vostro kernel: [ 360.460102] [<ffffffff8132de1c>] ? _raw_spin_lock_irqsave+0x9/0x25 Jan 28 09:42:49 vostro kernel: [ 360.460118] [<ffffffffa05afd19>] ? wait_current_trans.isra.22+0xae/0xdd [btrfs] Jan 28 09:42:49 vostro kernel: [ 360.460122] [<ffffffff8105ec6b>] ? add_wait_queue+0x3c/0x3c Jan 28 09:42:49 vostro kernel: [ 360.460132] [<ffffffffa05b0f82>] ? start_transaction+0x231/0x246 [btrfs] Jan 28 09:42:49 vostro kernel: [ 360.460144] [<ffffffffa05b9772>] ? btrfs_dirty_inode+0x23/0x11d [btrfs] Jan 28 09:42:49 vostro kernel: [ 360.460148] [<ffffffff8111001c>] ? __mark_inode_dirty+0x22/0x17a Jan 28 09:42:49 vostro kernel: [ 360.460159] [<ffffffffa05b891e>] ? btrfs_setattr+0x6d/0x92 [btrfs] Jan 28 09:42:49 vostro kernel: [ 360.460162] [<ffffffff81107642>] ? notify_change+0x18e/0x256 Jan 28 09:42:49 vostro kernel: [ 360.460165] [<ffffffff810353a7>] ? should_resched+0x5/0x23 Jan 28 09:42:49 vostro kernel: [ 360.460168] [<ffffffff81114930>] ? utimes_common+0x10c/0x135 Jan 28 09:42:49 vostro kernel: [ 360.460170] [<ffffffff81114a14>] ? do_utimes+0xbb/0xd6 Jan 28 09:42:49 vostro kernel: [ 360.460173] [<ffffffff810f779c>] ? sys_newlstat+0x23/0x2b Jan 28 09:42:49 vostro kernel: [ 360.460175] [<ffffffff810353a7>] ? should_resched+0x5/0x23 Jan 28 09:42:49 vostro kernel: [ 360.460178] [<ffffffff81114b1a>] ? sys_utimensat+0x6e/0x77 Jan 28 09:42:49 vostro kernel: [ 360.460181] [<ffffffff81332e12>] ? system_call_fastpath+0x16/0x1b and Jan 28 09:42:49 vostro kernel: [ 360.460184] INFO: task rsync:3495 blocked for more than 120 seconds. Jan 28 09:42:49 vostro kernel: [ 360.460185] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Jan 28 09:42:49 vostro kernel: [ 360.460186] rsync D ffff8800bfc92f40 0 3495 1 0x00000004 Jan 28 09:42:49 vostro kernel: [ 360.460189] ffff88009b4c47f0 0000000000000086 ffff880000000000 ffff8800bbf080c0 Jan 28 09:42:49 vostro kernel: [ 360.460192] 0000000000012f40 ffff880091ff1fd8 ffff880091ff1fd8 ffff88009b4c47f0 Jan 28 09:42:49 vostro kernel: [ 360.460196] 0000000000000000 00000001bff5b700 ffffffff8102f71b ffff880094060a20 Jan 28 09:42:49 vostro kernel: [ 360.460199] Call Trace: Jan 28 09:42:49 vostro kernel: [ 360.460202] [<ffffffff8102f71b>] ? pte_alloc_one+0x2f/0x39 Jan 28 09:42:49 vostro kernel: [ 360.460205] [<ffffffff8132d437>] ? __mutex_lock_common.isra.6+0xff/0x164 Jan 28 09:42:49 vostro kernel: [ 360.460209] [<ffffffff810cada2>] ? copy_pte_range+0x34d/0x391 Jan 28 09:42:49 vostro kernel: [ 360.460211] [<ffffffff8132d325>] ? mutex_lock+0x1a/0x2d Jan 28 09:42:49 vostro kernel: [ 360.460214] [<ffffffff810fcb6d>] ? walk_component+0x1f4/0x406 Jan 28 09:42:49 vostro kernel: [ 360.460217] [<ffffffff8102f999>] ? ptep_set_access_flags+0x39/0x45 Jan 28 09:42:49 vostro kernel: [ 360.460219] [<ffffffff810fd9c1>] ? path_lookupat+0x7c/0x29e Jan 28 09:42:49 vostro kernel: [ 360.460222] [<ffffffff810353a7>] ? should_resched+0x5/0x23 Jan 28 09:42:49 vostro kernel: [ 360.460224] [<ffffffff8132cb37>] ? _cond_resched+0x7/0x1c Jan 28 09:42:49 vostro kernel: [ 360.460227] [<ffffffff810fdbff>] ? do_path_lookup+0x1c/0x87 Jan 28 09:42:49 vostro kernel: [ 360.460229] [<ffffffff810ff47a>] ? user_path_at_empty+0x47/0x7b Jan 28 09:42:49 vostro kernel: [ 360.460232] [<ffffffff81330dea>] ? do_page_fault+0x2fc/0x337 Jan 28 09:42:49 vostro kernel: [ 360.460234] [<ffffffff810f7636>] ? vfs_fstatat+0x32/0x60 Jan 28 09:42:49 vostro kernel: [ 360.460236] [<ffffffff810f778b>] ? sys_newlstat+0x12/0x2b Jan 28 09:42:49 vostro kernel: [ 360.460239] [<ffffffff810353a7>] ? should_resched+0x5/0x23 Jan 28 09:42:49 vostro kernel: [ 360.460241] [<ffffffff8132e435>] ? page_fault+0x25/0x30 Jan 28 09:42:49 vostro kernel: [ 360.460244] [<ffffffff81332e12>] ? system_call_fastpath+0x16/0x1b Kernel is 3.1.0. I'm writing to a 500 GB external USB disk. Known bug? If not, anything I can do to help? Best, -Nikolaus -- »Time flies like an arrow, fruit flies like a Banana.« PGP fingerprint: 5B93 61F8 4EA2 E279 ABF6 02CF A9AD B7F8 AE4E 425C -- 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
