Systemd bybasses fstab mounting root partition(?)

From	Ivan Boro <magwa.man@yandex.ru>
Newsgroups	linux.debian.user
Subject	Systemd bybasses fstab mounting root partition(?)
Date	2015-10-19 17:50 +0200
Message-ID	<qlkRc-ll-11@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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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.

------------
Ivan Boro
cc, please.

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Systemd bybasses fstab mounting root partition(?) Ivan Boro <magwa.man@yandex.ru> - 2015-10-19 17:50 +0200
  Re: Systemd bybasses fstab mounting root partition(?) "Karl E. Jorgensen" <karl@jorgensen.org.uk> - 2015-10-19 19:10 +0200
    Re: Systemd bybasses fstab mounting root partition(?) Ivan Boro <magwa.man@yandex.ru> - 2015-10-19 19:40 +0200
      Re: Systemd bybasses fstab mounting root partition(?) David Wright <deblis@lionunicorn.co.uk> - 2015-10-19 23:00 +0200

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