I've been using ZFS on all my desktops and my personal NAS for, I can't remember, probably 4-5 years. Including ZFS root filesystem, and swap on a zvol. I hav

I've been using ZFS on all my desktops and my personal NAS for, I can't remember, probably 4-5 years. Including ZFS root filesystem, and swap on a zvol. I have to say, I really like it, and I'll use it again if I have to redo a machine. Installing Ubuntu on a ZFS root filesystem is much more involved than merely running the installer. If you have never done it before, and are appropriately cautious, it'll take you half a day to follow the (very detailed and helpful) Wiki page. I can do it in less than an hour now. ----- So far, only one problem (and not a bug, more of a misfeature): when one of the disks in the NAS died, I couldn't replace it with a new one, because the ZFS mirroring was using its default 2kb blocks (I forget the correct term). It can only do this on 2kb/sector HDDs. My new HDD had 4kb/sector. I was forced to recreate the entire filesystem using a larger blocksize (ashift=12). Luckily this worked without a hitch, thanks also to zfs send | zfs receive, but it still pissed me off.