On Thu, May 14, 2009 at 5:55 PM, Mike Christie <micha...@cs.wisc.edu> wrote: > > Erez Zilber wrote: >> Hi, >> >> I'm running a setup of open-iscsi & SCST. In order to test error >> scenarios during a WRITE command, I've added a delay in SCST, so after >> it receives the command, it doesn't send an R2T for 20 seconds. I also >> modified the device timeout on the initiator side to 5 seconds. >> However, I don't see an 'abort' for that command. Instead, I see that > > How are you looking? With ethereal? Did you see a TUR get sent before > the session recovery?
I'm running wireshark. i didn't see any TUR. > > Could you try my linux-2.6-iscsi git tree and turn on debugging? Moving to another kernel will be harder for me, but I can add a printk in the eh handler. > > >> open-iscsi logs in again after 10 seconds and sends the command again. > > Do you see something about a target reset or host reset? No > >> SCST also cleans up the session. > > If the initiator thinks the abort failed (actually it is more like we > will return failed if we think it is possible that someone could still > be accessing the commands buffers, because we do not want scsi-ml to > start using them again) it would return FAILED to the scsi-eh which for > us would end up running the host/target reset, which we just drop the > session for. > > We discussed before we need to modify how we decided when to return > failed and we need to send a target reset for the host/target reset > handler because the target reset and session relogin have different > clearing effects. Vlad also has concerns about the tcp/ip connection > teardown and buildup. > >> >> Can anyone explain the reason for this behavior? I would expect that > > iser and iscsi_tcp both hooked in the same libiscsi.c eh code. You > should know this :) I suspect that scsi-ml doesn't call the eh handler at all. Anyway, I will add this printk and retest. Erez --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "open-iscsi" group. To post to this group, send email to open-iscsi@googlegroups.com To unsubscribe from this group, send email to open-iscsi+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/open-iscsi -~----------~----~----~----~------~----~------~--~---
