On Thu, Apr 5, 2018 at 7:33 AM, Ian Halliday <ihalliday@xxxxxxxxxx> wrote:
Hello,
I wanted to post this as a question to the group before we go launch it in a test environment. Will Gluster handle enabling sharding on an existing distributed-replicated environment, and is it safe to do?
Yes it's safe but it would mean that only the files that are created since shard was enabled would be sharded, not the existing files.
If you want to shard the existing files, there are a couple of things you can do:
1. move the existing file to a local fs from your glusterfs volume and then move it back into the volume.
2. copy the existing file into a temporary file on the same volume and rename the file back to its original name.
You could try both on two test vms and go with the faster of the two approaches. And either way, you could do this one vm at a time.
-Krutika
The environment in question is a VM image storage cluster with some disk files starting to grow beyond the size of some of the smaller bricks.
-- Ian
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