Gluster 3.7.5, gluster repos, on proxmox (debian 8)
I have an issue with VM images (qcow2) being corrupted.
- gluster replica 3, shards on, shard size = 256MBI have an issue with VM images (qcow2) being corrupted.
- Gluster nodes are all also VM host nodes
- VM image mounted from qemu via gfapi
To reproduce
- Start VM
- live migrate it to another node
- VM will rapidly become unresponsive and have to be stopped
- attempting to restart the vm results in a "qcow2: Image is corrupt; cannot be opened read/write" error.
I have never seen this before. 100% reproducible with shards on, never happens with shards off.
I don't think this happens when using NFS to access the shard volume, I suspect because with NFS it is still accessing the one node, whereas with gfapi it's handed off to the node the VM is running on.
--
Lindsay
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