On Tue, 23 Feb 2021 11:37:12 -0500 rhkra...@gmail.com wrote: > On Tuesday, February 23, 2021 11:13:12 AM Nicholas Geovanis wrote: > > You can always add more filesystem space later. It's easier if > > you're using LVM but that isn't required. You just build another > > filesystem on the new drive after it's installed and mount it into > > your filesystems, at the appropriate mount point. > > Don't you have to do things like copy the old filesystem content to > the new filesystem (possibly using a temporary mount point for one of > those), then move the new filesystem to the old mount point? (Maybe > that is only if they are "system" filesystems (e.g., /var, /etc, > /home ...?) >
Yes, and you also need to delete the content in the original directory tree, or else you don't recover the space. Most of this is most easily done from a live/rescue OS with the host OS offline, though it can be done online with a bit more work. If you're moving /usr it is wise to rebuild grub from chroot, making a new initramfs. Systemd requires /usr during boot and gets quite upset if it can't find it. I'm aware there is controversy about putting essential system software in a tree named '/usr' and I'm not going to add to it. There are many web articles on how to add and mount a new drive, but hardly any (mostly one for Ubuntu repeated widely) for actually moving an existing directory tree, especially a system one like /usr. I hesitate to offer details as it is a long time, pre-systemd, since I last did it. -- Joe
