xfssyncd and disk spin down

[Michael Weissenbacher]

Brian wrote:
> 
> Can anyone please comment if this bug was ever fixed?
> 
> I have searched and see no further talk about this.
> 
> echo 720000 > /proc/sys/fs/xfs/xfssyncd_centisecs allows a drive to sleep more
> often, but still is impacted by this. 
> 
> Thanks!
> 
AFAICT nothing has changed in this regard. I sill see the same behavior
with kernel 2.6.39. Thanks to this thread i found out about the problems
related to accumulating head unloads which i was able to mitigate by
setting xfssyncd_centisecs to a higher value.

cheers,
Michael