On 1/19/2011 11:05 AM, Pasi Kärkkäinen wrote:
on Linux is *often* done using the Linux kernel device mapper
dm-multipath driver.
It doesn't require anything special from the NICs/drivers. It doesn't even
require iSCSI actually,
it works pretty much for any SCSI device (iSCSI, FC, FCoE, SAS, etc).
So yes, you can do multipathing with iSCSI using Intel nics with the default
RHEL kernel modules.
However, my personal experience with multipathing iSCSI (admittedly back
on CentOS 5.0) was that it was ridiculously unstable (yes - this was on
Intel server NICs). Paths would be detected on one boot but not detected
on the next apparently completely completely at random. If a path failed
and came back it might or might not be detected.
I finally gave up on it as a complete botch after weeks of trying to get
it to work reliably. It was worse than having nothing at all.
--
Benjamin Franz
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