Bounty: 50
I Installed ubuntu 20.04 with the ZFS experimental option enabled, indeed under disks and gparted I can see that most of my current SSD is occupied by a ZFS_member.
I have very minor experience with ZFS. I set up my zfs in a previous ubuntu 18 install but the OS itself was not on ZFS.
anyways : How do I add another SSD (not the same size or brand) to my current ZFS pool?
I just want the most basic "add space" I don’t really care about x2, x3 or x10 redundancy (in fact I don’t want to alter current ZFS redundancy setup, whatever it is). I just want extra space.
I found this : https://unix.stackexchange.com/questions/530968/adding-disks-to-zfs-pool
but it doesn’t answer my question for someone of my level.
For example none of the two people who answered specified if it was :
zpool create addonpool /dev/sdb
zpool add addonpool mirror /dev/sda /dev/sdb
Or just :
zpool add rpool mirror /dev/sda /dev/sdb#"rpool" name of existing pool, apparently
Nor what syntax is used to point to drives.
all the links I found are referencing syntaxes like : c0t3d0, c1t3d0, and c1t1d0.
I can’t find such an identifier, this guide : https://www.thegeekdiary.com/zfs-tutorials-creating-zfs-pools-and-file-systems/
uses echo | format this does not work in ubuntu 20.04
I do know their guid :
t@tsu:~$ sudo lshw -class disk
[sudo] password for t:
*-disk:0
description: ATA Disk
product: Samsung SSD 850
physical id: 0
bus info: scsi@2:0.0.0
logical name: /dev/sda
version: 2B6Q
serial: S2RBNX0J524197X
size: 465GiB (500GB)
capabilities: gpt-1.00 partitioned partitioned:gpt
configuration: ansiversion=5 guid=32f4df93-2b50-4a68-a888-f0570adac413 logicalsectorsize=512 sectorsize=512
*-disk:1
description: ATA Disk
product: Crucial_CT525MX3
physical id: 1
bus info: scsi@4:0.0.0
logical name: /dev/sdb
version: R040
serial: 172918010661
size: 489GiB (525GB)
capabilities: gpt-1.00 partitioned partitioned:gpt
configuration: ansiversion=5 guid=d3e2b4ab-2c44-4da8-ac0c-fdb8053d35da logicalsectorsize=512 sectorsize=512
I did test just zpool alone to get the man, this works so I know that I’d be able to run the above I just want to not mess it up.
Also I’m planning on doing this by logging out and running my commands in a tty. It does nag me that technically at such a point I have not really exited the environment using my ZFS pool so will that work or should this be done from a Live USB?
t@tsu:~$ zpool status
pool: bpool
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
bpool ONLINE 0 0 0
73ea4055-b5ea-894b-a861-907bb222d9ea ONLINE 0 0 0
errors: No known data errors
pool: rpool
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
rpool ONLINE 0 0 0
7905bb43-ac9f-a843-b1bb-8809744d9025 ONLINE 0 0 0
errors: No known data errors