ZFS passdevgonecb

Paul Kraus paul at kraus-haus.org
Wed Jun 17 14:40:35 UTC 2015

On Jun 15, 2015, at 22:58, Da Rock <freebsd-questions at herveybayaustralia.com.au> wrote:

> Big problem atm is that my file server has a failed disk in the raid, and I've tried replacing it with a new drive (twice now), and both times it begins to resilver and then it is "REMOVED". If I online it again, it goes for about 10mins then REMOVED again.

So the drive is going away under high load ...

Do you know the replacement drive is good ? Can you try a different replacement drive ?

> I had a chat with someone and they mentioned the cable and/or controller could be the issue. Could anyone add any insight or tests I could do? I'm not exactly claim to be an expert at zfs, so maybe something might need addressing there too.

That is the other option… I have seen combinations of a certain drive with a certain cable (or a certain cable with a certain slot in disk chassis) cause this … loss of connectivity under high load.

> I'd particularly appreciate a means of testing the controller.

I am not aware of any cheap way to test a controller … I am assuming SATA here...

Paul Kraus
paul at kraus-haus.org

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