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HELP! Everything down after deleting dedupe ZVOL

Added by Darin Gerald 9 months ago

Hello Everyone,

I had two ZVOLs with 1 TB each. The first was dedupe enabled and the second was not. I am using them as VM datastores.

I noticed that I was having various problems with my VMs going down, which were stored on the first volume, and attributed it to dedupe. I migrated all of my VMs off the first ZVOL to the second ZVOL, confirmed everything was off, then deleted the first. Shortly afterwards, I noticed that all my VM Hosts completely lost connectivity to the Nexentastor. I rebooted Nexentastor and am now hung on a screen that says:

Reading ZFS config: *NOTICE: iscsi connection(6) unable to connect to target SENDTARGETS_DISCOVERY NOTICE: iscsi discovery failure - SendTargets (192.168.168.168)

I cannot access the Nexenta Management View.

Even more dire, my hosts still cannot access the SAN.

Any help or advice is appreciated! I'm worried sick that I will not be able to get this back up and have lost some very critical data.

Thanks!!!


Replies

RE: HELP! Everything down after deleting dedupe ZVOL - Added by Darin Gerald 9 months ago

Okay, I guess a cry to the community helped. All I had to do was wait it out and it eventually made it to the login prompt.

Management View came back up and my VM Host connectivity was reestablished.

RE: HELP! Everything down after deleting dedupe ZVOL - Added by David Bond 9 months ago

It can take some time to remove an iscsi zvol, especially a deduped one. It can also cause slow downs (just removing a non-dedupe zvol can) and hangs with the nexenta interfaces, nmc etc if there isnt enough ram (not the shell).