An Oneironaut wrote: > So I just tried issuing a logout with iscsiadm. After this I was able > to umount and reboot no problem. Even though the iSCSI device can't > respond does this command set something in the Kernel when it doesn't > receive an ACK?
If the connection is not up, and you run iscsiadm ... -u, then we basically just fail all IO that comes to us and was in the process of being executed. So you will get fs and block errors and you can unmount, but any data that needed to be written is lost. Doing this is just a way to unjam the system. It is not safe. > > -JD > > On Jun 2, 3:16 am, Tomasz Chmielewski <[EMAIL PROTECTED]> wrote: >> An Oneironaut schrieb: >> >>> Hey all, >>> So I'm having some problems using umount an my iSCSI device. I >>> have my timeout period set to a really long time and the no-op timers >>> have been switched off. If my system loses its connection to the >>> iSCSI and I try to umount the device the command hangs. I've tried >>> umount with the 'l' flag and the 'f' flag but neither have worked. >>> And when I do this I am not able to kill the process even with kill >>> -9. I've tried killing all the processes associate with the mount >>> before umounting it. But nothing seems to work. >>> Even when I try to reboot my system will hang requiring a hard >>> reset. I've tried 'reboot -f' and 'reboot -n' but neither work. Has >>> anyone run into this before or have any ideas how I can achieve either >>> a umount or a successful reboot? >> Well, if you have a really long timeout and your connection is lost, >> umount and everything else will - not surprisingly - timeout with the >> period you specified. >> >> Your solutions are: >> >> - restore the connection >> - if possible, try to decrease the timeout just before loosing the >> connection >> - if the connection is lost already, you may also try to decrease the >> timeout, but I'm not sure it'll work, >> - don't shut your network interfaces down when rebooting or halting the >> system (distro-specific; for Debian, look into /etc/init.d/halt and >> NETDOWN / $netdown; others may use $HALTARGS variable in >> /etc/init.d/halt etc.). >> >> An example for setting the timeout to 120 seconds: >> >> iscsiadm -m node -T iqn.2007-05.net.my:store.backup -o update -n >> node.session.timeo.replacement_timeout -v 120 >> >> -- >> Tomasz Chmielewskihttp://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 open-iscsi@googlegroups.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 -~----------~----~----~----~------~----~------~--~---
