Re: computer reboot when iscsi ethernet cable is unpluged
On 5 mar, 08:50, Pasi Kärkkäinen pa...@iki.fi wrote: So are you using the open-iscsi/iscsi-initiator-utils from the distributions, or self-compiled from open-iscsi.org ? Are you using the open-iscsi kernel modules provided by the distribution default kernels? Yes I use the provided kernel and open-iscsi from debian 5 and CentOS 5.4 :/ Do you think I should compile my own kernel with latest code from open- iscsi web sites ? Could it be realted to x86-64 bit mode ? I have not tested this behavior on 32 bits distributions. I will try first to enable debug mode to catch some error log ... if any. Just for information ... without ethernet cable link unpluged, iscsi disks work very well ! -- Marc -- You received this message because you are subscribed to the Google Groups open-iscsi group. To post to this group, send email to open-is...@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?hl=en.
Re: computer reboot when iscsi ethernet cable is unpluged
On Fri, Mar 05, 2010 at 01:05:18AM -0800, Marc Grunberg wrote: On 5 mar, 08:50, Pasi Kärkkäinen pa...@iki.fi wrote: So are you using the open-iscsi/iscsi-initiator-utils from the distributions, or self-compiled from open-iscsi.org ? Are you using the open-iscsi kernel modules provided by the distribution default kernels? Yes I use the provided kernel and open-iscsi from debian 5 and CentOS 5.4 :/ Ok. Mike should know if there are known bugs like this in the EL5 open-iscsi drivers.. Do you think I should compile my own kernel with latest code from open- iscsi web sites ? Well you can always try them.. make sure you replace both the kernel module and tools. Could it be realted to x86-64 bit mode ? I have not tested this behavior on 32 bits distributions. No, I don't think it's x86_64 causing problems. I will try first to enable debug mode to catch some error log ... if any. Yeah.. serial console should help you and allow you to capture the error messages. Just for information ... without ethernet cable link unpluged, iscsi disks work very well ! Yep. -- Pasi -- You received this message because you are subscribed to the Google Groups open-iscsi group. To post to this group, send email to open-is...@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?hl=en.
Re: computer reboot when iscsi ethernet cable is unpluged
On 03/04/2010 10:42 AM, Marc Grunberg wrote: Hi I am a newcomer on this group and I just own an 2xEquallogic PS6000 that I use on linux. I am facing strange unwanted computer reboot using iscsi with this Equallogic This problem is easily reproducible on different hardware/software combination. the first computer is Debian 5/Lenny x86-64 with a Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet the second one is Centos 5.4 x86-64 with Intel Corporation 82546GB Gigabit Ethernet Controller (e1000 module) booth are running up to date resease of open-iscsi/iscsi-initiator- utils. To make this strange behavior happens Equalogic disks have to be mounted first. Then the reboot comes when I unplug the computer's ethernet iscsi cable from the switch. I have not made exhaustive test but the disconnection is around 1 minute then computers reboot (like reset) without shutting down and without any log message ! If you have a FS mounted and then you disconnect the disk for longer than you have set the node.session.timeo.replacement_timeout to the FS is going to get IO errors and then probably panic and kill the system. If you hook up a serial line or look in /var/log/messages do you see something about IO errors, then FS errors, then a panic from the FS (What FS are you using btw?)? There also might be bug where I think the iscsi layer will fail the session, disconnect the socket, and then fail IO upwards. But, the network layer still has references to the IO's pages, and so when we fail upwards the upper layers might be freeing the pages while the network system still thinks it has a valid reference. This is just a guess of what I have seen on a system reported in bugzilla. I have not been able to replicate it here. And I think everyone is using refcounts on the pages, so I do not think upper layers are just going to free the page from under the network layer. I cannot get any info on the bug. If you are not seeing panics from the FS let me know. -- You received this message because you are subscribed to the Google Groups open-iscsi group. To post to this group, send email to open-is...@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?hl=en.
computer reboot when iscsi ethernet cable is unpluged
Hi I am a newcomer on this group and I just own an 2xEquallogic PS6000 that I use on linux. I am facing strange unwanted computer reboot using iscsi with this Equallogic This problem is easily reproducible on different hardware/software combination. the first computer is Debian 5/Lenny x86-64 with a Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet the second one is Centos 5.4 x86-64 with Intel Corporation 82546GB Gigabit Ethernet Controller (e1000 module) booth are running up to date resease of open-iscsi/iscsi-initiator- utils. To make this strange behavior happens Equalogic disks have to be mounted first. Then the reboot comes when I unplug the computer's ethernet iscsi cable from the switch. I have not made exhaustive test but the disconnection is around 1 minute then computers reboot (like reset) without shutting down and without any log message ! Does anybody have similar problems ? Any clue to overcome this ? Best regards Marc -- You received this message because you are subscribed to the Google Groups open-iscsi group. To post to this group, send email to open-is...@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?hl=en.
Re: computer reboot when iscsi ethernet cable is unpluged
On Thu, Mar 04, 2010 at 08:42:36AM -0800, Marc Grunberg wrote: Hi I am a newcomer on this group and I just own an 2xEquallogic PS6000 that I use on linux. I am facing strange unwanted computer reboot using iscsi with this Equallogic This problem is easily reproducible on different hardware/software combination. the first computer is Debian 5/Lenny x86-64 with a Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet the second one is Centos 5.4 x86-64 with Intel Corporation 82546GB Gigabit Ethernet Controller (e1000 module) booth are running up to date resease of open-iscsi/iscsi-initiator- utils. So are you using the open-iscsi/iscsi-initiator-utils from the distributions, or self-compiled from open-iscsi.org ? Are you using the open-iscsi kernel modules provided by the distribution default kernels? To make this strange behavior happens Equalogic disks have to be mounted first. Then the reboot comes when I unplug the computer's ethernet iscsi cable from the switch. I have not made exhaustive test but the disconnection is around 1 minute then computers reboot (like reset) without shutting down and without any log message ! Does anybody have similar problems ? Any clue to overcome this ? Please set up a serial console so you're able to log the crash/error messages. Anyway, this sounds like a really weird problem. -- Pasi -- You received this message because you are subscribed to the Google Groups open-iscsi group. To post to this group, send email to open-is...@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?hl=en.
