I noticed my initial sync when making a 4 disk raid10 is really slow. I looked in dmesg and found this. I do not know what it means. Suggestions please :) [ 600.959945] INFO: task md0_resync:676 blocked for more than 120 seconds. [ 600.959976] Not tainted 4.3.2-1-ARCH #1 [ 600.959994] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 600.960024] md0_resync D ffff88021fa956c0 0 676 2 0x00000000 [ 600.960028] ffff8800ca143b40 0000000000000046 ffff880216659b80 ffff8800377244c0 [ 600.960030] ffff8800ca144000 ffff88003765a000 ffff8800ca143b68 ffff88003765a100 [ 600.960032] ffff88003765a000 ffff8800ca143b58 ffffffff8157f92a ffff88003765a0dc [ 600.960034] Call Trace: [ 600.960040] [<ffffffff8157f92a>] schedule+0x3a/0x90 [ 600.960044] [<ffffffffa0548f52>] raise_barrier+0x122/0x190 [raid10] [ 600.960049] [<ffffffff810b5dc0>] ? wake_atomic_t_function+0x60/0x60 [ 600.960051] [<ffffffffa054eea1>] sync_request+0x731/0x19b0 [raid10] [ 600.960055] [<ffffffffa0390637>] ? is_mddev_idle+0x118/0x13e [md_mod] [ 600.960058] [<ffffffffa0384ee7>] md_do_sync+0x897/0xf00 [md_mod] [ 600.960061] [<ffffffff810b5dc0>] ? wake_atomic_t_function+0x60/0x60 [ 600.960065] [<ffffffff810809fe>] ? kernel_sigaction+0x7e/0xe0 [ 600.960068] [<ffffffffa0380fe0>] md_thread+0x130/0x140 [md_mod] [ 600.960069] [<ffffffff8157f1d0>] ? __schedule+0x340/0xa60 [ 600.960072] [<ffffffffa0380eb0>] ? md_wait_for_blocked_rdev+0x130/0x130 [md_mod] [ 600.960075] [<ffffffff81092e68>] kthread+0xd8/0xf0 [ 600.960077] [<ffffffff81092d90>] ? kthread_worker_fn+0x170/0x170 [ 600.960078] [<ffffffff8158375f>] ret_from_fork+0x3f/0x70 [ 600.960080] [<ffffffff81092d90>] ? kthread_worker_fn+0x170/0x170 [ 721.067472] INFO: task md0_resync:676 blocked for more than 120 seconds. [ 721.067500] Not tainted 4.3.2-1-ARCH #1 [ 721.067517] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 721.067545] md0_resync D ffff88021fa956c0 0 676 2 0x00000000 [ 721.067548] ffff8800ca143b40 0000000000000046 ffff880216659b80 ffff8800377244c0 [ 721.067551] ffff8800ca144000 ffff88003765a000 ffff8800ca143b68 ffff88003765a100 [ 721.067553] ffff88003765a000 ffff8800ca143b58 ffffffff8157f92a ffff88003765a0dc [ 721.067555] Call Trace: [ 721.067561] [<ffffffff8157f92a>] schedule+0x3a/0x90 [ 721.067565] [<ffffffffa0548f52>] raise_barrier+0x122/0x190 [raid10] [ 721.067569] [<ffffffff810b5dc0>] ? wake_atomic_t_function+0x60/0x60 [ 721.067572] [<ffffffffa054eea1>] sync_request+0x731/0x19b0 [raid10] [ 721.067575] [<ffffffffa0390637>] ? is_mddev_idle+0x118/0x13e [md_mod] [ 721.067578] [<ffffffffa0384ee7>] md_do_sync+0x897/0xf00 [md_mod] [ 721.067581] [<ffffffff810b5dc0>] ? wake_atomic_t_function+0x60/0x60 [ 721.067585] [<ffffffff810809fe>] ? kernel_sigaction+0x7e/0xe0 [ 721.067588] [<ffffffffa0380fe0>] md_thread+0x130/0x140 [md_mod] [ 721.067590] [<ffffffff8157f1d0>] ? __schedule+0x340/0xa60 [ 721.067592] [<ffffffffa0380eb0>] ? md_wait_for_blocked_rdev+0x130/0x130 [md_mod] [ 721.067595] [<ffffffff81092e68>] kthread+0xd8/0xf0 [ 721.067597] [<ffffffff81092d90>] ? kthread_worker_fn+0x170/0x170 [ 721.067599] [<ffffffff8158375f>] ret_from_fork+0x3f/0x70 [ 721.067600] [<ffffffff81092d90>] ? kthread_worker_fn+0x170/0x170 [ 841.176298] INFO: task md0_resync:676 blocked for more than 120 seconds. [ 841.176326] Not tainted 4.3.2-1-ARCH #1 [ 841.176342] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 841.176370] md0_resync D ffff88021fa956c0 0 676 2 0x00000000 [ 841.176374] ffff8800ca143b40 0000000000000046 ffff880216659b80 ffff8800377244c0 [ 841.176376] ffff8800ca144000 ffff88003765a000 ffff8800ca143b68 ffff88003765a100 [ 841.176378] ffff88003765a000 ffff8800ca143b58 ffffffff8157f92a ffff88003765a0dc [ 841.176380] Call Trace: [ 841.176386] [<ffffffff8157f92a>] schedule+0x3a/0x90 [ 841.176390] [<ffffffffa0548f52>] raise_barrier+0x122/0x190 [raid10] [ 841.176395] [<ffffffff810b5dc0>] ? wake_atomic_t_function+0x60/0x60 [ 841.176397] [<ffffffffa054eea1>] sync_request+0x731/0x19b0 [raid10] [ 841.176400] [<ffffffffa0390637>] ? is_mddev_idle+0x118/0x13e [md_mod] [ 841.176403] [<ffffffffa0384ee7>] md_do_sync+0x897/0xf00 [md_mod] [ 841.176406] [<ffffffff810b5dc0>] ? wake_atomic_t_function+0x60/0x60 [ 841.176409] [<ffffffff810809fe>] ? kernel_sigaction+0x7e/0xe0 [ 841.176412] [<ffffffffa0380fe0>] md_thread+0x130/0x140 [md_mod] [ 841.176414] [<ffffffff8157f1d0>] ? __schedule+0x340/0xa60 [ 841.176416] [<ffffffffa0380eb0>] ? md_wait_for_blocked_rdev+0x130/0x130 [md_mod] [ 841.176419] [<ffffffff81092e68>] kthread+0xd8/0xf0 [ 841.176421] [<ffffffff81092d90>] ? kthread_worker_fn+0x170/0x170 [ 841.176423] [<ffffffff8158375f>] ret_from_fork+0x3f/0x70 [ 841.176424] [<ffffffff81092d90>] ? kthread_worker_fn+0x170/0x170 [ 961.285635] INFO: task md0_resync:676 blocked for more than 120 seconds. [ 961.285653] Not tainted 4.3.2-1-ARCH #1 [ 961.285662] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 961.285678] md0_resync D ffff88021fa956c0 0 676 2 0x00000000 [ 961.285681] ffff8800ca143b40 0000000000000046 ffff880216659b80 ffff8800377244c0 [ 961.285682] ffff8800ca144000 ffff88003765a000 ffff8800ca143b68 ffff88003765a100 [ 961.285684] ffff88003765a000 ffff8800ca143b58 ffffffff8157f92a ffff88003765a0dc [ 961.285685] Call Trace: [ 961.285690] [<ffffffff8157f92a>] schedule+0x3a/0x90 [ 961.285694] [<ffffffffa0548f52>] raise_barrier+0x122/0x190 [raid10] [ 961.285697] [<ffffffff810b5dc0>] ? wake_atomic_t_function+0x60/0x60 [ 961.285699] [<ffffffffa054eea1>] sync_request+0x731/0x19b0 [raid10] [ 961.285702] [<ffffffffa0390637>] ? is_mddev_idle+0x118/0x13e [md_mod] [ 961.285704] [<ffffffffa0384ee7>] md_do_sync+0x897/0xf00 [md_mod] [ 961.285706] [<ffffffff810b5dc0>] ? wake_atomic_t_function+0x60/0x60 [ 961.285709] [<ffffffff810809fe>] ? kernel_sigaction+0x7e/0xe0 [ 961.285711] [<ffffffffa0380fe0>] md_thread+0x130/0x140 [md_mod] [ 961.285712] [<ffffffff8157f1d0>] ? __schedule+0x340/0xa60 [ 961.285714] [<ffffffffa0380eb0>] ? md_wait_for_blocked_rdev+0x130/0x130 [md_mod] [ 961.285716] [<ffffffff81092e68>] kthread+0xd8/0xf0 [ 961.285717] [<ffffffff81092d90>] ? kthread_worker_fn+0x170/0x170 [ 961.285719] [<ffffffff8158375f>] ret_from_fork+0x3f/0x70 [ 961.285720] [<ffffffff81092d90>] ? kthread_worker_fn+0x170/0x170 -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
