Frank Steinmetzger wrote: > Am Wed, Sep 06, 2023 at 02:45:11PM -0500 schrieb Dale: > >> Oh, creating a >> vdev was the trick. Once that is done, expand the pool. It's one of >> those, once it is done, it seems easy. ROFL > Note that people used to shoot themselves in the foot when lazily (or by > accident) adding a single disk to an existing pool. If that pool was > composed of RAID vdevs, then now they had a non-redundant single disk in > that pool and it was not possible to remove a vdev from a pool! That > single-disk vdev could only be converted to a mirror to at least get > redundancy back. > > The only proper solution was to destroy the pool and start from scratch. By > now there is a partial remedy, in that it is possible to remove mirror vdevs > from a pool. But no RAIDs: > https://forum.level1techs.com/t/solved-how-to-remove-vdev-from-zpool/192044/5 > https://arstechnica.com/civis/threads/performance-when-removing-zfs-vdevs-with-zpool-remove.1481148/post-40491873 > And you get some left-over metadata about the removed vdev.
That's good to see. I'll bookmark those links for the future. At least this is doable. If I do mess up, I could just start over. It only takes about 10 days to copy over again. o_O >> I guess vdev is like LVMs pv, physical volume I think it is. > Haven’t we had this topic before? At least twice? Including the comparison > between > the three layers of LVM with their equivalent in ZFS land. ;-) > > ZFS is more meant for static setups, not constantly changing disk loadouts > of varying disk sizes. > We may have but being more familiar with LVM, I try to sort of make it make sense to me. Honestly, ZFS doesn't really make sense, yet. My understanding, it has two layers instead of three. I think. If there was a NAS thing like TrueNAS that used LVM instead, I'd be all over it. I likely would have never used TrueNAS at all. If I found one, I'd switch faster than a lightning strike. Even if it is done in GUI I'd switch. Command line would be fine by me. Honestly, once set up and a network is working, all I need is for it to boot, let me enter the encryption password and me able to mount the thing from my main rig. Of course, shutdown when done as well. Then it may be best for me to consider other options. I'm always adding, swapping out or otherwise moving things around. That is one thing I like about LVM. The only thing I try to avoid, shrinking a file system. I use ext4 so it is doable as long as there is enough space but still, I try to avoid it. I may have done that once, maybe. At least I got it done now. Updating my backups went faster than expected. Already done and drives are back in the safe. Since I have three drives in the little cage and little room for air flow, I added a fan to the drive cage. They got up to the 40's C pretty quick. Can't have them getting hot. Thanks to all. Dale :-) :-)
