I've built a FreeNAS rig on a sweet little HP ProLiant MicroServer.
Storage wise, I've created a 3 disk ZFS pool using RAIDZ1. I started out with 3 small disks, while getting familiar with FreeNAS, but ultimately decided to replace my home NAS with it.
So I bought new 2 TB disks, and replaced each disk with a larger, one at a time, letting the pool resilver after each replacement.
The original pool, created via the GUI, used GPTID references. zpool status
would show something similar to this:
pool: vol2
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
vol2 ONLINE 0 0 0
gptid/96857d85-6c2f-11e3-9387-78acc0f794bd ONLINE 0 0 0
When I replaced the disks in the pool with zpool replace
, I ended up using the GEOM names (adaN) instead. To be honest I found it a lot easier and more intuitive this way.
But it seems that referencing the disks using GEOM names comes with a risk of having your drives re-labeled upon reboot, confusing ZFS and possibly corrupting your ZFS pools in the process.
I figured I could "offline" each of the disks and replace them with zpool replace
, using their GPTIDs, which I assume will require resilvering, thus putting my data at risk while it takes place.
However, I can't seem to find any GPTIDs for my "ada" disks. ls /dev/gptid
just lists my fourth, and currently unused, disk. glabel list
returns the same disk/GPTID and various FreeNAS partitions.
- Is there actually a point in replacing the referenced GEOM names with GPTIDs?
- Why can't I see GPTIDs for the new disks? Do I need to do something, before GPTIDs are assigned and
glabel list
will return their names? - Is there a safer way to do so, that does not involve resilvering?
Thanks!