Hi all, We have a ceph cluster that being used as a backing store for several VMs (windows and linux). We notice that when we reboot a node, the cluster enters a degraded state (which is expected), but when it begins to recover, it starts backfilling and it kills the performance of our VMs. The VMs run slow, or not at all, and also seem to switch it's ceph mounts to read-only. I was wondering 2 things:
1. Shouldn't we be recovering instead of backfilling? It seems like backfilling is much more intensive operation 2. Can we improve the recovery/backfill performance so that our VMs don't go down when there is a problem with the cluster? -- Kevin Weiler IT IMC Financial Markets | 233 S. Wacker Drive, Suite 4300 | Chicago, IL 60606 | http://imc-chicago.com/ Phone: +1 312-204-7439 | Fax: +1 312-244-3301 | E-Mail: kevin.wei...@imc-chicago.com<mailto:kevin.wei...@imc-chicago.com> ________________________________ The information in this e-mail is intended only for the person or entity to which it is addressed. It may contain confidential and /or privileged material. If someone other than the intended recipient should receive this e-mail, he / she shall not be entitled to read, disseminate, disclose or duplicate it. If you receive this e-mail unintentionally, please inform us immediately by "reply" and then delete it from your system. Although this information has been compiled with great care, neither IMC Financial Markets & Asset Management nor any of its related entities shall accept any responsibility for any errors, omissions or other inaccuracies in this information or for the consequences thereof, nor shall it be bound in any way by the contents of this e-mail or its attachments. In the event of incomplete or incorrect transmission, please return the e-mail to the sender and permanently delete this message and any attachments. Messages and attachments are scanned for all known viruses. Always scan attachments before opening them.
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