fix remote degraded gmirror

Adam Vande More amvandemore at
Mon Sep 28 14:14:14 UTC 2009

On Mon, Sep 28, 2009 at 8:32 AM, Robin Becker <robin at> wrote:

> krad wrote:
> ...........
>> probably not but possibly. What is the server you have is it a custom
>> build
>> one? Does it have a drive cage? Can you make the hd light blink?
> I've never seen the machinery.
>> Is the remote hands going to go inside the case for you, as I think he
>> might
>> to have to trace the cables to work out what drive is the correct one?
> I thought the serial number would help with that,
>> Personally I would recommend that you or one of your trusted engineers
>> goes
>> down an replaces the drive yourself. Remote hands engineers in my
>> experiance
>> are a bit crude, and at the end of the day dont care about your box as
>> much
>> as you would.
> but you're probably right about the remote hands being uncaring :(
>> While you or your guy is down there he could do a proper job and label up
>> all the drives so in future you can get remote hands to do it all for you.
>>  it's still under discussion anyway whether we just abandon the machine;
> the current colo company took over our freebsd machines from another and
> they don't provide freebsd support anyway. The alternative ugh is to switch
> to ubuntu.
> I suspect if we do go ahead it will come down to one of our guys going down
> there to do the hands on.
> I'm still looking for good examples of exactly how to do the actual
> recovery. I assume I can just do
> gmirror remove gm0 /dev/ad4
> to eliminate the bad disk.
> However, will the system still reboot from the disk on /dev/ad6 or should
> the good disk be swapped into the /dev/ad4 position. I don't know enough
> about sata booting, but I suppose it can be configured through our serial
> console.

It would boot fine from either assuming drive is good and mirror was

> If the system does boot then the other disk can be inserted with gmirror
> insert gm0 /dev/ad6, but I am not sure whether any partitioning/formatting
> etc etc is required, Dru Lavigne was my guide when we installed this stuff,
> but this is the first time it's failed and she doesn't mention the repair
> process.
> --
> Robin Becker
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Adam Vande More

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