> If I understand this correctly, you've stripped the disks together
> w/ Linux lvm, then exported a single ISCSI volume to ZFS (or two for 
> mirroring; which isn't clear).

The disks in the SAN servers were indeed striped together with Linux LVM and 
exported as a single volume to ZFS.  The ZFS pool was set up as follows:

$ zpool create -f storagepoola raidz1 c4t8d0 c4t6d0 c4t12d0 c4t10d0

$ zpool get all storagepoola
NAME          PROPERTY     VALUE         SOURCE
storagepoola  size         12.5T         -
storagepoola  used         71.6G         -
storagepoola  available    12.4T         -
storagepoola  capacity     0%            -
storagepoola  altroot      -             default
storagepoola  health       ONLINE        -
storagepoola  guid         13384031601381355037  -
storagepoola  version      10            default
storagepoola  bootfs       -             default
storagepoola  delegation   on            default
storagepoola  autoreplace  off           default
storagepoola  cachefile    -             default
storagepoola  failmode     wait          default

> I don't know how many concurrent IOs Solaris thinks your ISCSI volumes 
> will handle, but that's one area to examine.  The only way to realize full
> performance is going to be to get ZFS to issue multiple
> IOs to the ISCSI boxes at once.

I have read the zpool and zfs man pages, but it's still not clear to me how I 
can configure ZFS such that it issues concurrent I/O's to the iSCSI boxes ?

> I'd also suggest just exporting the raw disks to zfs, and have it do the 
> stripping.

Thanks, I'll try this configuration as soon as I have the time.

Bart.
 
 
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