The iSCSI layer doesn't do MPIO, it's done at the host level. Depending on the tape system, you could benefit performance wise using MPIO. Open-iSCSI can be configured to initiate multiple sessions to a single target. Once those volumes are presented to the host, having the same Serial number, the host will create an MPIO device to encompass those paths. Multipathd allows you to customize how that device is managed.
On Sat, Mar 9, 2013 at 6:58 AM, Guillaume <[email protected]> wrote: > Hello, > > I have a virtual tape library and a iscsi SAN. All have multiple ethernet > interfaces, This will ressult in multiples sessions to the targets.So I > wonder if I must use dm-multipath or not ? Does the current iscsi layer > handle the multiple paths to an iqn or not ? > > Another question about the output of "iscsiadm -m session" : the lines of > output begins by @IP:3260,n where n is an integer. Is this number a > priority level in some way, or does it only distinguish multiple sessions > to the same iqn ? > > > Regards, > Guillaume > > > > > -- > You received this message because you are subscribed to the Google Groups > "open-iscsi" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/open-iscsi?hl=en. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/open-iscsi?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
