Daniel Braniss wrote:
Hi all,
I am playing with iscsi_initiator on FreeBSD 7-STABLE and Dell
PowerVault MD3000i. This is the first time I am testing iSCSI...
Does anyone have FreeBSD's iSCSI initiator in production / heavy load?
Or does somebody have experiences with Dell MD3000i?
One thing is "poor performance" ~ 60 - 70MB/s depending on RAID level
used. (poor performance compared to plain SATA disk which have 110MB/s -
both tested for reading as it is our planned load - multimedia streaming
and downloads)
The other thing is some problem with compatibility of initiator and Dell
MD3000i.
If I setup RAID 5 'Disk Group' consisted of 4x 1TB SATA drives (in
MD3000i) and then created for example 2 'Virtual Disks', both are
detected by iscontrol and added to /dev/ as da0 and da1, but da1 spams
log with messages like this:
[...]
Can somebody advice some tweaks to get better performance and solution
of the errors above?
hi Miroslav,
firstly, in case you haven't yet, get the latest from:
ftp://ftp.cs.huji.ac.il/users/danny/freebsd/iscsi-2.2.3.tar.gz
the slowness is probably due to the scsi errors, which I need some scsi expert
(hence the cc to s...@freebsd.org, hint, hint).
In the mean time, and if you can/want, you can allow me access to an iscsi
partition
so that I can better debug the issue.
oh, and yes, we use it here.
danny
Hi Danny,
thank you for your reply. I will test iSCSI 2.2.3 and if it fails, I
will give you an access to the machine to let you debug the errors.
Thank you again!
Miroslav Lachman
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