$ zpool get autoexpand rpool
NAME PROPERTY VALUE SOURCE
rpool autoexpand on local
Am I correct in thinking I replace one of my 500GB disks with the 1TB, wait for it to resilver, and then repeat the process with the other disk? And when both resilvers are done I will have a 1TB mirror identical to the 500GB mirror I have going right now.
Just wondering if I’m missing anything small/stupid to avoid pulling hair out later over something stupid
No, this is how it works. But you can also just keep the 500GB drives and just add the 2x1TB as a mirror and get 1.5TB pool. If you got the ports/slots.
if autoexpand=on is activated, zed (zfs event daemon) should upgrade the capacity shortly after the second resilver is done.
Thanks for the replies, much appreciated!
It would have been cool to keep the 500GB’ers but my laptop has no additional ports/slots
That’s okay though, I’ll just put the 500GB mirrors in a safe place somewhere, with the hopes of never having to use them; no such thing at too many backups
Edit: Do I need to format the new disks in any type of way? Or will zfs transparently do all the work behind the scenes? Haven’t plugged them in or done anything yet
That’s why we love ZFS. If something flips, we got checksum and redundant copy waiting during a scrub to restore the flipped block back to former glory.
I’d scrub everything that was cold storage for >2-4 weeks.
Sweet! This was a success, however, my old disks I had partitioned manually and had a 128M (I think) EFI partition where I stored ZFSBootMenu
This time I let zfs have its way with the entire disk, and it’s done the following:
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 0 931.5G 0 disk
├─sda1 8:1 0 931.5G 0 part
└─sda9 8:9 0 8M 0 part
sdb 8:16 0 931.5G 0 disk
├─sdb1 8:17 0 931.5G 0 part
└─sdb9 8:25 0 8M 0 part
You can give ZFS partitions too. ZFS eats all block devices. If you need a separate partition for EFI and stuff, make those partitions and give ZFS the rest. All distros like TrueNAS, Proxmox and Ubuntu use partitions. My e.g. laptop Ubuntu (23.10) rpool is /dev/nvme0n1p4 partition.
Thanks for response, this may sound like a stupid question, but how can I do so after the fact? I didn’t create any partitions, and just fed zfs /dev/disk/by-id/ata-samsung-uniqueid
Last time I instructed it ata-samsung-uniqueid-part2
I guess what I’m asking is, do I need to recreate this for both my mirrors to be in sync? It would be nice if I could just resize the 931.5G zfs partition it created and have 128M leftover where it left 8M on both disks
The way I’m booting now depends on an external usb with ZBM installed to it
Damn, once a month!? I honestly didn’t think of this.
Being that my laptop (EliteBook 8470p) only has 2 SATA ports, how would I go about scrubbing the 2 disks that I replaced?
I can connect one via USB<->SATA but that still leaves one out. Any ideas off top of head?
@cowspace It has been my experience, when external hard drives have been in cold storage (not powered up) more than one month, when you go to use it some files may be missing.
I have only a very intermediate understanding of ZFS. As I understand how ZFS works when you scrub your pool’s, you don’t need any extra disks. I could be wrong.
