Появился еще один сервер который подвисает.
OS Debian 8 Linux 3.16.0-6-amd64
Диски в порядке, бад секторов нет.
В логах в момент зависание вот это:
May 5 08:19:14 mail kernel: [47880.340494] Call Trace:
May 5 08:19:14 mail kernel: [47880.340511] [<ffffffffa01a98d5>] ? jbd2_log_wait_commit+0x95/0x100 [jbd2]
May 5 08:19:14 mail kernel: [47880.340515] [<ffffffff810ae020>] ? prepare_to_wait_event+0xf0/0xf0
May 5 08:19:14 mail kernel: [47880.340522] [<ffffffffa01c0943>] ? ext4_sync_file+0x2c3/0x360 [ext4]
May 5 08:19:14 mail kernel: [47880.340524] [<ffffffff811e64dd>] ? do_fsync+0x4d/0x80
May 5 08:19:14 mail kernel: [47880.340526] [<ffffffff811e676c>] ? SyS_fsync+0xc/0x10
May 5 08:19:14 mail kernel: [47880.340528] [<ffffffff81539b9c>] ? system_call_fast_compare_end+0x1c/0x21
May 5 08:19:14 mail kernel: [48120.340089] INFO: task mysqld:7969 blocked for more than 120 seconds.
May 5 08:19:14 mail kernel: [48120.341815] Tainted: G C 3.16.0-6-amd64 #1
May 5 08:19:14 mail kernel: [48120.344485] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 5 08:19:14 mail kernel: [48120.345675] mysqld D ffff8800d968c970 0 7969 730 0x00000000
May 5 08:19:14 mail kernel: [48120.345679] ffff8800d968c970 0000000000000086 0000000000013fc0 ffff8802fbd3ffd8
May 5 08:19:14 mail kernel: [48120.345681] 0000000000013fc0 ffff8800d968c970 ffff8802fdffc800 0000000005ca3411
May 5 08:19:14 mail kernel: [48120.345683] ffff8802fdffc888 ffff8802fdffc824 ffff8802fbd3fed0 ffff8802fdffc8a0
May 5 08:19:14 mail kernel: [48120.345685] Call Trace:
May 5 08:19:14 mail kernel: [48120.345705] [<ffffffffa01a98d5>] ? jbd2_log_wait_commit+0x95/0x100 [jbd2]
May 5 08:19:14 mail kernel: [48120.345712] [<ffffffff810ae020>] ? prepare_to_wait_event+0xf0/0xf0
May 5 08:19:14 mail kernel: [48120.345723] [<ffffffffa01c0943>] ? ext4_sync_file+0x2c3/0x360 [ext4]
May 5 08:19:14 mail kernel: [48120.345727] [<ffffffff811e64dd>] ? do_fsync+0x4d/0x80
May 5 08:19:14 mail kernel: [48120.345728] [<ffffffff811e676c>] ? SyS_fsync+0xc/0x10
May 5 08:19:14 mail kernel: [48120.345732] [<ffffffff81539b9c>] ? system_call_fast_compare_end+0x1c/0x21
May 5 08:19:14 mail kernel: [48120.345752] INFO: task mysqld:12265 blocked for more than 120 seconds.
May 5 08:19:14 mail kernel: [48120.346787] Tainted: G C 3.16.0-6-amd64 #1
May 5 08:19:14 mail kernel: [48120.347971] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 5 08:19:14 mail kernel: [48120.350430] mysqld D ffff8802fc2cc1d0 0 12265 6901 0x00000000
May 5 08:19:14 mail kernel: [48120.350433] ffff8802fc2cc1d0 0000000000000086 0000000000013fc0 ffff8802fa537fd8
May 5 08:19:14 mail kernel: [48120.350435] 0000000000013fc0 ffff8802fc2cc1d0 ffff8802fdffc800 0000000005ca3411
May 5 08:19:14 mail kernel: [48120.350437] ffff8802fdffc888 ffff8802fdffc824 ffff8802fa537ed0 ffff8802fdffc8a0
May 5 08:19:14 mail kernel: [48120.350438] Call Trace:
May 5 08:19:14 mail kernel: [48120.350446] [<ffffffffa01a98d5>] ? jbd2_log_wait_commit+0x95/0x100 [jbd2]
May 5 08:19:14 mail kernel: [48120.350449] [<ffffffff810ae020>] ? prepare_to_wait_event+0xf0/0xf0
May 5 08:19:14 mail kernel: [48120.350454] [<ffffffffa01c0943>] ? ext4_sync_file+0x2c3/0x360 [ext4]
May 5 08:19:15 mail kernel: [48120.350456] [<ffffffff811e64dd>] ? do_fsync+0x4d/0x80
May 5 08:19:15 mail kernel: [48120.350458] [<ffffffff811e676c>] ? SyS_fsync+0xc/0x10
May 5 08:19:15 mail kernel: [48120.350460] [<ffffffff81539b9c>] ? system_call_fast_compare_end+0x1c/0x21
May 5 08:19:15 mail kernel: [48120.350535] INFO: task quotasync:16765 blocked for more than 120 seconds.
May 5 08:19:15 mail kernel: [48120.363904] Tainted: G C 3.16.0-6-amd64 #1
May 5 08:19:15 mail kernel: [48120.376562] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 5 08:19:15 mail kernel: [48120.395420] quotasync D ffff8800daee2c70 0 16765 16764 0x00000000
May 5 08:19:15 mail kernel: [48120.395423] ffff8800daee2c70 0000000000000086 0000000000013fc0 ffff880119483fd8
May 5 08:19:15 mail kernel: [48120.395425] 0000000000013fc0 ffff8800daee2c70 ffff8802fdffc800 0000000005ca3411
May 5 08:19:15 mail kernel: [48120.395446] ffff8802fdffc888 ffff8802fdffc824 ffff880119483e48 ffff8802fdffc8a0
May 5 08:19:15 mail kernel: [48120.395448] Call Trace:
May 5 08:19:15 mail kernel: [48120.395458] [<ffffffffa01a98d5>] ? jbd2_log_wait_commit+0x95/0x100 [jbd2]
May 5 08:19:15 mail kernel: [48120.395461] [<ffffffff810ae020>] ? prepare_to_wait_event+0xf0/0xf0
May 5 08:19:15 mail kernel: [48120.395468] [<ffffffffa01d88db>] ? ext4_sync_fs+0x9b/0x190 [ext4]
May 5 08:19:15 mail kernel: [48120.399407] [<ffffffff81212b6e>] ? dquot_quota_sync+0x3e/0x130
May 5 08:19:15 mail kernel: [48120.403441] [<ffffffff81215dd2>] ? SyS_quotactl+0x352/0x730
May 5 08:19:15 mail kernel: [48120.403444] [<ffffffff81539b9c>] ? system_call_fast_compare_end+0x1c/0x21
