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Created attachment 480147 [details] vdsm.log Description of problem: When attaching/detaching additional storage domain to an existing Data Center, the Data Center crashes, and we see various errors on the host. Version-Release number of selected component (if applicable): RHEL 6.1 Kernel-2.6.32-117.el6.x86_64 vdsm-4.9-47.el6.x86_64 device-mapper-multipath-0.4.9-38.el6.x86_64 lvm2-2.02.83-2.el6.x86_64 RHEVM - Build IC96 Steps to Reproduce: RHEVM Flow: 1. Create iSCSI Storage domain, and attach it to Data center. 2. Create another iSCSI storage domain, and attach it to the same Data Center. 3. The Data center will crash, and kernel errors will be shown in /var/log/messages Additional info: 1. Attached LOGS. 2. For further information, please contact Dan Kenigsberg.
Created attachment 480148 [details] log from /var/log/messages
Created attachment 480149 [details] dmesg
I'm trying to figure out what's going on here. I don't know what kernel errors you are talking about. There are 30 hours of logs, so it's quite possible that I missed them. If you could give me some pointers to when you tried to attach the other storage domain, so I knew where to look for the errors, that would be a big help. There are a lot of multipath messages, but I didn't see any that looked obviously problematic without knowing more details. For instance, all those Feb 22 12:10:02 nari12 multipathd: dm-11: remove map (uevent) Feb 22 12:10:02 nari12 multipathd: dm-11: devmap not registered, can't remove are udev ending remove messages for a device that multipathd has already removed. I don't know why udev sends so many remove uevents, but sometimes is just seems to. Messages like: Feb 22 12:10:02 nari12 kernel: device-mapper: table: 253:11: multipath: error getting device Ususally happen because multipath hasn't blacklisted some device that is already in use, and so it's trying to create a multipath device on it, but failing since the device is already in use. There's lots of other messages which could be errors if something's happening that's not supposed to, but mostly they are just notification messages that a path came up or down, or was added or removed. The vdsm log is 8 megs long, and I'm not sure what I'm looking for in it.
hmm, with a newer kernel, this bug was not reproduced... kernel-2.6.32-118.el6.x86_64 iscsi-initiator-utils-6.2.0.872-17.el6.x86_64 device-mapper-multipath-0.4.9-38.el6.x86_64
(In reply to comment #6) > hmm, with a newer kernel, this bug was not reproduced... Closing. > > kernel-2.6.32-118.el6.x86_64 > iscsi-initiator-utils-6.2.0.872-17.el6.x86_64 > device-mapper-multipath-0.4.9-38.el6.x86_64