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| Ben78 | When I restart the host that I have DevStack installed, every service works fine except Cinder. I can not create any volume after restarting the host. Any idea? | 15:01 |
|---|---|---|
| Ben78 | To be more accurate, the relation between Nova and Cinder is broken. Nova can not access volumes and all instances attached to a volume are off. | 15:21 |
| Ben78 | I can still create new instances without volume. Also I can create volumes separately. | 15:22 |
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| whoami-rajat | Ben78: are the 'previously attached volumes' still in in-use state? | 15:35 |
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| Ben78 | whoami-rajat: yes | 15:41 |
| whoami-rajat | Ben78: could you share a traceback of c-vol or n-cpu or any log to show the exact error | 15:50 |
| Ben78 | whoami-raja: Sure! Where can I find them? | 15:52 |
| Ben78 | whoami-rajat: I ran sudo journalctl -f -u devstack@c-vol.service and I got bunch of following error: | 16:02 |
| Ben78 | Aug 18 11:55:10 rezavm cinder-volume[7804]: ERROR cinder.service [-] Manager for service cinder-volume rezavm@lvmdriver-1 is reporting problems, not sending heartbeat. Service will appear "down". | 16:02 |
| whoami-rajat | Ben78: oh, so your backend i.e. lvm crashed | 16:04 |
| whoami-rajat | Ben78: could you check your volume groups, `sudo vgs` | 16:04 |
| Ben78 | whoami-rajat: sudo vgs does not return anything | 16:06 |
| whoami-rajat | Ben78: sadly this seems to be a persistent problem with devstack, restarting system causes sometimes to remove the volume groups | 16:09 |
| whoami-rajat | how about `sudo lvs` | 16:09 |
| Ben78 | whoami-rajat: returns nothing | 16:10 |
| whoami-rajat | strange, it should atleast display the logical volumes created by cinder, did you try restarting lvm2 service? | 16:13 |
| Ben78 | no. let me try. | 16:13 |
| Ben78 | whoami-rajat: I got this msg when I try to restart lvm2: | 16:14 |
| Ben78 | Failed to restart lvm2.service: Unit lvm2.service is masked. | 16:14 |
| whoami-rajat | I'm afraid the only solution i can offer is to unstack and stack but that will make you lose all the volumes, instances etc , since all the build (PVs VGs) that devstack script does is lost, maybe you can also manually try to create the physical volumes and volume groups that devstack requires but isn't guaranteed to work. | 16:24 |
| Ben78 | whoami-rajat: I am trying to see if there is an alternative solution for stacking/unstaking. I usually store the state of the Host virtual machine (which has DevStack installed), but restoring the save VM is not back the host to normal state somtimes. | 16:30 |
| Ben78 | It would be great if the restarting problem is solved. | 16:31 |
| whoami-rajat | Ben78: you can try and replicate the same here in your env http://paste.openstack.org/show/759239/ | 16:33 |
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| Ben78 | whoami-rajat: I just unstacked. I will have the same problem in near future :) I will try this and update you. Thanks for the help and time | 16:36 |
| whoami-rajat | Ben78: np, hope the problem gets fixed soon :) | 16:37 |
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