This also happened in a Lenny Dom0 last night during the monthly mdadm
check. I had to drive to the site and magic-sysrq the system back into life:
Linux sv28 2.6.26-2-xen-amd64 #1 SMP Fri Mar 27 07:12:15 UTC 2009 x86_64
GNU/Linux
Jun 7 00:59:00 sv28 kernel: [1305825.753958] INFO: task
md1_resync:26782 blocked for more than 120 seconds.
Jun 7 00:59:00 sv28 kernel: [1305825.757440] INFO: task
md2_resync:26784 blocked for more than 120 seconds.
Jun 7 01:00:59 sv28 kernel: [1305954.602993] INFO: task
md1_resync:26782 blocked for more than 120 seconds.
Jun 7 01:00:59 sv28 kernel: [1305954.603834] INFO: task
md2_resync:26784 blocked for more than 120 seconds.
Jun 7 01:03:37 sv28 kernel: [1306128.548134] INFO: task
md2_resync:26784 blocked for more than 120 seconds.
Jun 7 01:05:34 sv28 kernel: [1306257.395093] INFO: task
md2_resync:26784 blocked for more than 120 seconds.
Jun 7 01:07:32 sv28 kernel: [1306386.249687] INFO: task
md2_resync:26784 blocked for more than 120 seconds.
Jun 7 01:09:29 sv28 kernel: [1306515.093639] INFO: task
md2_resync:26784 blocked for more than 120 seconds.
And similar for several pages then:
Jun 7 04:27:25 sv28 kernel: [1319105.790949] INFO: task
md2_resync:26784 blocked for more than 120 seconds.
Jun 7 04:27:25 sv28 kernel: [1319105.791557] INFO: task partimage:27962
blocked for more than 120 seconds.
Jun 7 04:27:32 sv28 kernel: [1319112.235092] INFO: task qemu-dm:4255
blocked for more than 120 seconds.
Jun 7 04:27:34 sv28 kernel: [1319114.381142] INFO: task kjournald:2316
blocked for more than 120 seconds.
Jun 7 04:27:34 sv28 kernel: [1319114.384806] INFO: task pdflush:6370
blocked for more than 120 seconds.
And I guess its game over from here on...at 9am I tried a sync and it
did not complete :-(
For now I am disabling the mdadm monthly check...not ideal.
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