Hello,
I'm experimenting with the effects of different SCSI queue depth values.
The server has two QLogic QLE2560 FC HBAs connected via multipathing to
a storage system. The storage system has allocated to LUNs to the
server, each connected through four paths in an
active-active-active-active round-robin configuration. All in all, the
two LUNs are represented through eight /dev/sdX devices, represented by
two devices in /dev/mpath.
Two questions related to that:
- Is there a way to adjust queue depths without unloading the
qla2xxx kernel module?
- If I set the queue depth to 128, is that
- 128 in total for all devices handled by the qla2xxx
module?, or
- 128 for each HBA? (256 in total), or
- each of the eight /dev/sdX devices (1024 in toal)?, or
- each of the two /dev/mpath/... devices (256 in total)?
This is important for me to know so that my server doesn't
flood the storage system, affecting other servers connected
to it.
--
Regards,
Troels Arvin <[email protected]>
http://troels.arvin.dk/
_______________________________________________
rhelv5-list mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/rhelv5-list
