Hi On Mon, 2015-10-19 at 18:24 +0300, Ivan Boro wrote: > Looks like subj. > Have a KVM machine with jessie assembled via debootstrap. Fstab states > > /dev/vda2 / ext4 rw 0 0 > > The partition labeled vda2 is listed in grub.cfg as the root partition > by its uuid.(via update-grub) > > Added a disk to have swap on it. Booted normally, despite the fact, that > the new swap-disk was automatically labeled as vda and the disk with > root is as vdb: > > # mount | grep ' / ' > /dev/vdb2 on / type ext4 (rw,relatime,data=ordered) > > No errors or warnings in dmesg. > > So, systemd mounted root partition, whitout looking into fstab. > > I don't have much experience in systemd, and now wonder how this "smart" > mount works.
Well - I doubt this is systemd specific. /etc/fstab is in the root file system. Thus, the system can only examine /etc/fstab _after_ the root file system has been mounted... Instead you may want to examine the kernel command line (e.g. in grub or /proc/cmdline) - it should have "root=xxxx" in it. Nowadays that is often specified via a UUID - and the UUID stays the same if if you move disks about. Hope this helps -- Karl E. Jorgensen
