Re: all vms can not start up when boot all the ceph hosts.

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This might not be a Ceph issue at all depending on if you're using any sort of caching.  If you have caching on your disk controllers at all, then the write might have happened to the cache but never made it to the OSD disks which would show up as problems on the VM RBDs.  Make sure you have proper BBU's on your disk controllers and/or disable caching that might be enabled on your controllers or disks that could be benefiting you with write speed while the cluster is healthy, but potentially causing you to run into this state during a catastrophe.

On Tue, Dec 4, 2018 at 10:49 PM linghucongsong <linghucongsong@xxxxxxx> wrote:

Thanks to all! I might have found the reason.

It is look like relate to the below bug.

https://bugs.launchpad.net/nova/+bug/1773449




At 2018-12-04 23:42:15, "Ouyang Xu" <xu.ouyang@xxxxxxx> wrote:
Hi linghucongsong:

I have got this issue before, you can try to fix it as below:

1. use rbd lock ls to get the lock for the vm
2. use rbd lock rm to remove that lock for the vm
3. start vm again

hope that can help you.

regards,

Ouyang

On 2018/12/4 下午4:48, linghucongsong wrote:
HI all!

I have a ceph test envirment use ceph with openstack. There are some vms run on the openstack. It is just a test envirment.

my ceph version is 12.2.4. Last day I reboot all the ceph hosts before this I do not shutdown the vms on the openstack.

When all the hosts boot up and the ceph become healthy. I  found all the vms can not start up. All the vms have the

below xfs error. Even I use xfs_repair also can not repair this problem .

It is just a test envrement so the data is not important  to me. I know the ceph version 12.2..4 is not stable

enough but how does it have so serious problems. Mind to other people care about this. Thanks to all. :)



 


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