Hi Lindsay,
>
- It will rapdily barf itself with disk errors
>
Can you please share which 'cache' option ( none, writeback, writethrough..etc) has been set for I/O on this problematic VM ? This can be fetched either from process output or from xml schema of the VM.>
- start the vm, open a console to it.
- live migrate the VM to a another node- It will rapdily barf itself with disk errors
>
--Humble
On Fri, Nov 13, 2015 at 11:57 AM, Lindsay Mathieson <lindsay.mathieson@xxxxxxxxx> wrote:
On 12 November 2015 at 15:46, Krutika Dhananjay <kdhananj@xxxxxxxxxx> wrote:OK. What do the client logs say?Dumb question - Which logs are those?Could you share the exact steps to recreate this, and I will try it locally on my setup?I'm running this on a 3 node proxmox cluster, which makes the vm creation & migration easy to test.Steps:- Create 3 node gluster datastore using proxmox vm host nodes
- Add gluster datastore as a storage dvice to proxmox* qemu vms use the gfapi to access the datastore* proxmox also adds a fuse mount for easy acces- create a VM on the gluster storage, QCOW2 format. I just created a simple debain Mate vm- start the vm, open a console to it.- live migrate the VM to a another node- It will rapdily barf itself with disk errors- stop the VM- qemu will show file corruption (many many errors)* qemu-img check <vm disk image>
* qemu-img info <vm disk image>Repeating the process with sharding off has no errors.
Also, want to see the output of 'gluster volume info'.
I've trimmed settings down to a bare minimum. This is a test gluster cluster so I can do with it as I wish.
gluster volume info
Volume Name: datastore1
Type: Replicate
Volume ID: 238fddd0-a88c-4edb-8ac5-ef87c58682bf
Status: Started
Number of Bricks: 1 x 3 = 3
Transport-type: tcp
Bricks:
Brick1: vnb.proxmox.softlog:/mnt/ext4
Brick2: vng.proxmox.softlog:/mnt/ext4
Brick3: vna.proxmox.softlog:/mnt/ext4
Options Reconfigured:
performance.strict-write-ordering: on
performance.readdir-ahead: off
cluster.quorum-type: auto
features.shard: on
--Lindsay
_______________________________________________
Gluster-users mailing list
Gluster-users@xxxxxxxxxxx
http://www.gluster.org/mailman/listinfo/gluster-users
_______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx http://www.gluster.org/mailman/listinfo/gluster-users
