> > Niels de Carpentier schrieb: >> I have a number of systems with an iscsi root filesystem. These systems >> connect to an redundant pair of iscsi servers, using tgtd. I use >> heartbeat > ^^^^ > > >> Is there any way to prevent this, so a iscsi root system can recover >> gracefully from a short outage? > > You are using tgtd. > > What are the causes of these disconnections? I guess manual caused by > you, but is it: > > 1) cabling, switches > 2) firewall, routing etc. > 3) tgtd restart?
In this case the failover is indeed manual for failover testing. The failover process basically is: server1: remove virtual IP server1: remove luns from tgtd server1: Make local DRBD device secondary server2: Make DRBD device primary server2: add luns to tgtd server2: Add virtual IP Since the iscsi initiators connect to the virtual IP, there can be no network connectivity while the switch is in progress. This should prevent any race conditions in tgtd. The network trace looks normal, some retries to the VIP while the switch is in progress, and a RST of the connection once the switch is done. The initiator reconnects normally after the reset, but the damage has already been done by then. (And it looks like the problems even start before the RST of the connection) Niels --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "open-iscsi" group. To post to this group, send email to firstname.lastname@example.org To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/open-iscsi -~----------~----~----~----~------~----~------~--~---