For a couple of minutes we could not connect to the server, as far as i can se this coresponds with a backup of a large container being completed - this is the only thing out of the ordinary we found in the log files:
Oct 9 10:31:04 jail5 kernel: [<ffffffff81124bb0>] ? sync_page+0x0/0x50
Oct 9 10:31:04 jail5 kernel: [<ffffffff81525ed3>] io_schedule+0x73/0xc0
Oct 9 10:31:04 jail5 kernel: [<ffffffff81124bed>] sync_page+0x3d/0x50
Oct 9 10:31:04 jail5 kernel: [<ffffffff8152689f>] __wait_on_bit+0x5f/0x90
Oct 9 10:31:04 jail5 kernel: [<ffffffff81124e23>] wait_on_page_bit+0x73/0x80
Oct 9 10:31:04 jail5 kernel: [<ffffffff81095c20>] ? wake_bit_function+0x0/0x40
Oct 9 10:31:04 jail5 kernel: [<ffffffff81126120>] grab_cache_page_write_begin+0xc0/0x150
Oct 9 10:31:04 jail5 kernel: [<ffffffffa063f677>] nfs_write_begin+0x77/0x230 [nfs]
Oct 9 10:31:04 jail5 kernel: [<ffffffff8112567b>] generic_file_buffered_write_iter+0x10b/0x2b0
Oct 9 10:31:04 jail5 kernel: [<ffffffff810552b0>] ? __dequeue_entity+0x30/0x50
Oct 9 10:31:04 jail5 kernel: [<ffffffff8112744d>] __generic_file_write_iter+0x1fd/0x400
Oct 9 10:31:04 jail5 kernel: [<ffffffff81073b27>] ? current_fs_time+0x27/0x30
Oct 9 10:31:04 jail5 kernel: [<ffffffff811276d5>] __generic_file_aio_write+0x85/0xa0
Oct 9 10:31:04 jail5 kernel: [<ffffffff8112775f>] generic_file_aio_write+0x6f/0xe0
Oct 9 10:31:04 jail5 kernel: [<ffffffffa06403fc>] nfs_file_write+0x10c/0x210 [nfs]
Oct 9 10:31:04 jail5 kernel: [<ffffffff8119489a>] do_sync_write+0xfa/0x140
Oct 9 10:31:04 jail5 kernel: [<ffffffff81095be0>] ? autoremove_wake_function+0x0/0x40
Oct 9 10:31:04 jail5 kernel: [<ffffffff81009962>] ? __switch_to+0x2c2/0x320
Oct 9 10:31:04 jail5 kernel: [<ffffffff81194b78>] vfs_write+0xb8/0x1a0
Oct 9 10:31:04 jail5 kernel: [<ffffffff81195591>] sys_write+0x51/0x90
Oct 9 10:31:04 jail5 kernel: [<ffffffff8100b182>] system_call_fastpath+0x16/0x1b
Oct 9 10:31:08 jail5 snmpd[502701]: error on subcontainer 'ia_addr' insert (-1)
Oct 9 10:31:38 jail5 snmpd[502701]: error on subcontainer 'ia_addr' insert (-1)
Oct 9 10:32:08 jail5 snmpd[502701]: error on subcontainer 'ia_addr' insert (-1)
Oct 9 10:32:38 jail5 snmpd[502701]: error on subcontainer 'ia_addr' insert (-1)
Oct 9 10:33:04 jail5 kernel: INFO: task lzop:144705 blocked for more than 120 seconds.
Oct 9 10:33:04 jail5 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct 9 10:33:04 jail5 kernel: lzop D ffff8802fe2951c0 0 144705 137366 0 0x00000000
Oct 9 10:33:04 jail5 kernel: ffff8800a643b998 0000000000000082 0000000000000000 0000000000000002
Oct 9 10:33:04 jail5 kernel: 0000000000000003 ffff88000004bb00 0000000000000000 00000000000200da
Oct 9 10:33:04 jail5 kernel: ffff8800a643ba28 ffff8802fe295760 ffff8800a643bfd8 ffff8800a643bfd8
Oct 9 10:33:04 jail5 kernel: Call Trace:
Oct 9 10:33:04 jail5 kernel: [<ffffffff81124bb0>] ? sync_page+0x0/0x50
Oct 9 10:33:04 jail5 kernel: [<ffffffff81525ed3>] io_schedule+0x73/0xc0
Oct 9 10:33:04 jail5 kernel: [<ffffffff81124bed>] sync_page+0x3d/0x50
Oct 9 10:33:04 jail5 kernel: [<ffffffff8152689f>] __wait_on_bit+0x5f/0x90
Oct 9 10:33:04 jail5 kernel: [<ffffffff81124e23>] wait_on_page_bit+0x73/0x80
Oct 9 10:33:04 jail5 kernel: [<ffffffff81095c20>] ? wake_bit_function+0x0/0x40
Oct 9 10:33:04 jail5 kernel: [<ffffffff81126120>] grab_cache_page_write_begin+0xc0/0x150
Oct 9 10:33:04 jail5 kernel: [<ffffffffa063f677>] nfs_write_begin+0x77/0x230 [nfs]
Oct 9 10:33:04 jail5 kernel: [<ffffffff8112567b>] generic_file_buffered_write_iter+0x10b/0x2b0
Oct 9 10:33:04 jail5 kernel: [<ffffffff810552b0>] ? __dequeue_entity+0x30/0x50
Oct 9 10:33:04 jail5 kernel: [<ffffffff8112744d>] __generic_file_write_iter+0x1fd/0x400
Oct 9 10:33:04 jail5 kernel: [<ffffffff81073b27>] ? current_fs_time+0x27/0x30
Oct 9 10:33:04 jail5 kernel: [<ffffffff811276d5>] __generic_file_aio_write+0x85/0xa0
Oct 9 10:33:04 jail5 kernel: [<ffffffff8112775f>] generic_file_aio_write+0x6f/0xe0
Oct 9 10:33:04 jail5 kernel: [<ffffffffa06403fc>] nfs_file_write+0x10c/0x210 [nfs]
Oct 9 10:33:04 jail5 kernel: [<ffffffff8119489a>] do_sync_write+0xfa/0x140
Oct 9 10:33:04 jail5 kernel: [<ffffffff81095be0>] ? autoremove_wake_function+0x0/0x40
Oct 9 10:33:04 jail5 kernel: [<ffffffff81009962>] ? __switch_to+0x2c2/0x320
Oct 9 10:33:04 jail5 kernel: [<ffffffff81194b78>] vfs_write+0xb8/0x1a0
Oct 9 10:33:04 jail5 kernel: [<ffffffff81195591>] sys_write+0x51/0x90
Oct 9 10:33:04 jail5 kernel: [<ffffffff8100b182>] system_call_fastpath+0x16/0x1b
What could have happened? And where do i start to search for cause'n'solution?
Oct 9 10:31:04 jail5 kernel: [<ffffffff81124bb0>] ? sync_page+0x0/0x50
Oct 9 10:31:04 jail5 kernel: [<ffffffff81525ed3>] io_schedule+0x73/0xc0
Oct 9 10:31:04 jail5 kernel: [<ffffffff81124bed>] sync_page+0x3d/0x50
Oct 9 10:31:04 jail5 kernel: [<ffffffff8152689f>] __wait_on_bit+0x5f/0x90
Oct 9 10:31:04 jail5 kernel: [<ffffffff81124e23>] wait_on_page_bit+0x73/0x80
Oct 9 10:31:04 jail5 kernel: [<ffffffff81095c20>] ? wake_bit_function+0x0/0x40
Oct 9 10:31:04 jail5 kernel: [<ffffffff81126120>] grab_cache_page_write_begin+0xc0/0x150
Oct 9 10:31:04 jail5 kernel: [<ffffffffa063f677>] nfs_write_begin+0x77/0x230 [nfs]
Oct 9 10:31:04 jail5 kernel: [<ffffffff8112567b>] generic_file_buffered_write_iter+0x10b/0x2b0
Oct 9 10:31:04 jail5 kernel: [<ffffffff810552b0>] ? __dequeue_entity+0x30/0x50
Oct 9 10:31:04 jail5 kernel: [<ffffffff8112744d>] __generic_file_write_iter+0x1fd/0x400
Oct 9 10:31:04 jail5 kernel: [<ffffffff81073b27>] ? current_fs_time+0x27/0x30
Oct 9 10:31:04 jail5 kernel: [<ffffffff811276d5>] __generic_file_aio_write+0x85/0xa0
Oct 9 10:31:04 jail5 kernel: [<ffffffff8112775f>] generic_file_aio_write+0x6f/0xe0
Oct 9 10:31:04 jail5 kernel: [<ffffffffa06403fc>] nfs_file_write+0x10c/0x210 [nfs]
Oct 9 10:31:04 jail5 kernel: [<ffffffff8119489a>] do_sync_write+0xfa/0x140
Oct 9 10:31:04 jail5 kernel: [<ffffffff81095be0>] ? autoremove_wake_function+0x0/0x40
Oct 9 10:31:04 jail5 kernel: [<ffffffff81009962>] ? __switch_to+0x2c2/0x320
Oct 9 10:31:04 jail5 kernel: [<ffffffff81194b78>] vfs_write+0xb8/0x1a0
Oct 9 10:31:04 jail5 kernel: [<ffffffff81195591>] sys_write+0x51/0x90
Oct 9 10:31:04 jail5 kernel: [<ffffffff8100b182>] system_call_fastpath+0x16/0x1b
Oct 9 10:31:08 jail5 snmpd[502701]: error on subcontainer 'ia_addr' insert (-1)
Oct 9 10:31:38 jail5 snmpd[502701]: error on subcontainer 'ia_addr' insert (-1)
Oct 9 10:32:08 jail5 snmpd[502701]: error on subcontainer 'ia_addr' insert (-1)
Oct 9 10:32:38 jail5 snmpd[502701]: error on subcontainer 'ia_addr' insert (-1)
Oct 9 10:33:04 jail5 kernel: INFO: task lzop:144705 blocked for more than 120 seconds.
Oct 9 10:33:04 jail5 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct 9 10:33:04 jail5 kernel: lzop D ffff8802fe2951c0 0 144705 137366 0 0x00000000
Oct 9 10:33:04 jail5 kernel: ffff8800a643b998 0000000000000082 0000000000000000 0000000000000002
Oct 9 10:33:04 jail5 kernel: 0000000000000003 ffff88000004bb00 0000000000000000 00000000000200da
Oct 9 10:33:04 jail5 kernel: ffff8800a643ba28 ffff8802fe295760 ffff8800a643bfd8 ffff8800a643bfd8
Oct 9 10:33:04 jail5 kernel: Call Trace:
Oct 9 10:33:04 jail5 kernel: [<ffffffff81124bb0>] ? sync_page+0x0/0x50
Oct 9 10:33:04 jail5 kernel: [<ffffffff81525ed3>] io_schedule+0x73/0xc0
Oct 9 10:33:04 jail5 kernel: [<ffffffff81124bed>] sync_page+0x3d/0x50
Oct 9 10:33:04 jail5 kernel: [<ffffffff8152689f>] __wait_on_bit+0x5f/0x90
Oct 9 10:33:04 jail5 kernel: [<ffffffff81124e23>] wait_on_page_bit+0x73/0x80
Oct 9 10:33:04 jail5 kernel: [<ffffffff81095c20>] ? wake_bit_function+0x0/0x40
Oct 9 10:33:04 jail5 kernel: [<ffffffff81126120>] grab_cache_page_write_begin+0xc0/0x150
Oct 9 10:33:04 jail5 kernel: [<ffffffffa063f677>] nfs_write_begin+0x77/0x230 [nfs]
Oct 9 10:33:04 jail5 kernel: [<ffffffff8112567b>] generic_file_buffered_write_iter+0x10b/0x2b0
Oct 9 10:33:04 jail5 kernel: [<ffffffff810552b0>] ? __dequeue_entity+0x30/0x50
Oct 9 10:33:04 jail5 kernel: [<ffffffff8112744d>] __generic_file_write_iter+0x1fd/0x400
Oct 9 10:33:04 jail5 kernel: [<ffffffff81073b27>] ? current_fs_time+0x27/0x30
Oct 9 10:33:04 jail5 kernel: [<ffffffff811276d5>] __generic_file_aio_write+0x85/0xa0
Oct 9 10:33:04 jail5 kernel: [<ffffffff8112775f>] generic_file_aio_write+0x6f/0xe0
Oct 9 10:33:04 jail5 kernel: [<ffffffffa06403fc>] nfs_file_write+0x10c/0x210 [nfs]
Oct 9 10:33:04 jail5 kernel: [<ffffffff8119489a>] do_sync_write+0xfa/0x140
Oct 9 10:33:04 jail5 kernel: [<ffffffff81095be0>] ? autoremove_wake_function+0x0/0x40
Oct 9 10:33:04 jail5 kernel: [<ffffffff81009962>] ? __switch_to+0x2c2/0x320
Oct 9 10:33:04 jail5 kernel: [<ffffffff81194b78>] vfs_write+0xb8/0x1a0
Oct 9 10:33:04 jail5 kernel: [<ffffffff81195591>] sys_write+0x51/0x90
Oct 9 10:33:04 jail5 kernel: [<ffffffff8100b182>] system_call_fastpath+0x16/0x1b
What could have happened? And where do i start to search for cause'n'solution?
