I ran a stress in a Lenny 2.6.26-2-686 hvm domu as follows:
# stress --cpu 16 --io 16 --vm 16 --hdd 16 --timeout 3600
Ok its a pretty heavy test for a dual core 2Gb domain...but I got the
same blocked task behaviour:
INFO: task stress:9878 blocked for more than 120 seconds.
Also:
hda: dma_timer_expiry: dma status == 0x24
hda: dma_timer_expiry: dma status == 0x21
The domu did reboot ok to recover. Significantly Dom0 which is
2.6.26-2-xen-amd64 survived unscathed.
Interesting downgrading the domu kernel to oldstable 2.6.18-5-686 the
same stress test passed by without incident. <<< a work round?
Perhaps this may approach be a handy and quick work round for existing
production sites until this bug is fixed in the official Lenny kernel.
Berni
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