Re: resync hangs

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NeilBrown wrote:

~$ grep . /sys/block/md2/md/*
...
/sys/block/md2/md/sync_speed:0
/sys/block/md2/md/sync_speed_max:0 (system)
/sys/block/md2/md/sync_speed_min:0 (system)

This looks like the culprit.  The sync_speed has been limited to
0.  The "(system)" means that it is using the value from
  /proc/sys/dev/raid/speed_limit_max

It seem that that value has been set to 0 somehow.
The default value is 200000.

Could something be setting that?  Can you set it back?
 .../speed_limit_min should be 1000 by default.

NeilBrown

I'll set it back next time it happens. Any guess what might set that value to 0 and why? mdadm is the only thing I know of that knows about raid. It starts up late in the init process with this command:

/sbin/mdadm --monitor --pid-file /var/run/mdadm/monitor.pid --daemonise --scan --syslog

Thanks for your help.

Randall

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