[PC-BSD Testing] boot volume mirror maintenance

Kris Moore kris at pcbsd.org
Mon Aug 13 11:39:51 PDT 2012

On 08/13/2012 13:51, Dewey Hylton wrote:
> the pc-bsd installer provides a couple of mirrored boot volume options; i believe this is a huge win. devices do fail, however, and while having your box stay running is a definite plus, one should immediately replace the failed device and re-instate the mirror. i consider this standard maintenance.
> adding a mirror device to a zpool is simple, but i'm not sure about the multiple partition types (gpt/mbr) and the boot code itself. having the required steps handy for recovering from these scenarios is necessary for sysadmins - and i'm sure most end-users would prefer to not be forced to reinstall when storage is so cheap and mirroring can be this simple.
> i'd like to see documentation that shows exactly how to do these things. is this already available somewhere, or will i need to dig into the installer source to figure it out myself?
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Luckily we keep a record of the process used to format the original
disks. Post-install if you look at /root/pc-sysinstall.log, you can see
the actual commands used to create the initial disk setup. I've used
this here, to manually add a drive into a pool, with the exact same disk
layout, etc.

Kris Moore
PC-BSD Software

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