[Gluster-users] How to identify a files shard?

[Lindsay Mathieson]

On 24/04/2016 2:56 PM, Krutika Dhananjay wrote:
> Nope, it's not necessary for them to all have the xattr.

Thats good :)

>
> Do you see anything at least in .glusterfs/indices/dirty on all bricks?

I checked, dirty dir empty on all bricks

I used diff3 to compare the checksums of the shards and it revealed that 
seven of the shards were the same on two bricks (vna & vng) and one of 
the shards was the same on two other bricks (vna & vnb). Fortunately 
none were different on all 3 bricks :)

Using the checksum as a quorum I deleted all the singleton shards (7 on 
vnb, 1 on vng), touched the file owner and issule a "heal full". All 8 
shards were restored with matching checksums for the other two bricks. A 
rechack of the entire set of shards for the vm showed all 3 copies as 
identical and the VM itself is functioning normally.

Its one way to manually heal up shard mismatches which gluster hasn't 
detected, if somewhat tedious. Its a method which lends itself to 
automation though.


Cheers,


-- 
Lindsay Mathieson