ZFS in production enviroments

[dennis berger]

Thanks for the setup information.
If you have time may you describe your head units a little bit?
How do you configure istgt + zfs for iscsi volumes. On our system I often see a lot of IOPS when I write to an exported zvol. 
Maybe this is due to wrong blocksize config in istgt.
I don't see those high IOPS in NFS exported volumes for example.

Best,
-dennis

Am 04.04.2013 um 14:46 schrieb Mark Felder:

> Our setup:
> 
> * FreeBSD 9-STABLE (from before 9.0-RELEASE)
> * HP DL360 servers acting as "head units"
> * LSI SAS 9201-16e controllers
> * Intel NICs
> * DataOn Storage DNS-1630 JBODs with dual controllers (LSI based)
> * 2TB 7200RPM Hitachi SATA HDs with SAS interposers (LSISS9252)
> * Intel SSDs for cache/log devices
> * gmultipath is handling the active/active data paths to the drives. ex: ZFS uses multipath/disk01 in the pool
> * istgt serving iSCSI to Xen and ESXi from zvols
> 
> Built these just before the hard drive prices spiked from the floods. I need to jam more RAM in there and it would be nice to be running FreeBSD 10 with some of the newer ZFS code and having access to TRIM. Uptime on these servers is over a year.
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