Konrad Rzeszutek schrieb: > On Thu, Apr 17, 2008 at 06:07:12AM -0400, Konrad Rzeszutek wrote: >>> It looks like the network is off but the session is still running. We >>> eventually get to the kernel shutoff here. Is your init script getting >>> run? If not then run it. If you left the session on on purpose then you >>> cannot turn the network off because the scsi layer will want to do its >>> shutdown when the kernel is stopped. >> Ah. Thanks for the explanation. The init script was run, but it didn't >> logoff of all the sessions (it would selectivly logoff instead of doing >> all of them). > > After I made sure that 'iscsiadm -m session -U all' was called during shutdown > a QA engineer here was able to make the 'iscsiadm' hang during this sequence. > > The result was that some of the iSCSI sessions did log-out while some other > did not, > and the machine hanged during the "Synchronizing SCSI cache for disk .."
I didn't follow the thread very closely, but a hang during "Synchronizing SCSI cache for disk" happens because: - iSCSI sessions were not properly disconnected, and - they can't be properly disconnected any more, because the network is already disabled. Most distributions shut down all network interfaces when a "halt" command is started (i.e., they add "-i" option to the halt command): -i: shut down all network interfaces. Without this flag, everything should shut down properly, even when it's not possible to logout all sessions earlier (i.e., a diskless machine started off iSCSI). -- Tomasz Chmielewski http://wpkg.org --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "open-iscsi" group. To post to this group, send email to email@example.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/open-iscsi -~----------~----~----~----~------~----~------~--~---