[Lustre-discuss] tuning max_sectors

[Brian J. Murrell]

On Fri, 2009-04-17 at 13:08 +0200, Götz Waschk wrote:
> 
> Lustre: zn_atlas-OST0000: underlying device cciss/c1d0p1 should be
> tuned for larger I/O requests: max_sectors = 1024 could be up to
> max_hw_sectors=2048

> What can I do?

IIRC, that's in reference to /sys/block/$device/queue/max_sectors_kb.
If you inspect that it should report 1024.  You can simply echo a new
value into that the way you can with /proc variables.

b.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 197 bytes
Desc: This is a digitally signed message part
URL: <http://lists.lustre.org/pipermail/lustre-discuss-lustre.org/attachments/20090417/80bc63c5/attachment.pgp>