[systemd-bugs] [Bug 90913] Failed to mount /sysroot - Nightly live images - LiveCD/DVD

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90913

Tomasz Paweł Gajc <tpgxyz at gmail.com> changed:

           What    |Removed                     |Added
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           Priority|medium                      |highest

--- Comment #14 from Tomasz Paweł Gajc <tpgxyz at gmail.com> ---
Hi,

i've investigated this a bit.

In my case i'm booting live iso by special dracut module which does:
1. mount iso
2. mount squashfs
3. mount aufs combined with tmpfs and squashfs to /union dir (plus fstab entry)
4. mout rbind /union to /sysroot
5. dracut does the pivot

In case of systemd-219 this was working, but with 220 not.

Problem lies with systemd-fstab-generator as in case of 219 there is no
/run/systemf/generator/sysroot.mount even if i run
/lib/systemd/system-generator/systemd-fstab-generator. In this case
system-fstab-generator creates file:

cat /run/systemd/generator/run-initramfs-union.mount

[Unit]
SourcePath=/etc/fstab
Documentation=man:fstab(5) man:systemd-fstab-generator(8)
Before=local-fs.target

[Mount]
What=aufs
Where=/run/initramfs/union
Type=aufs


While in 220 there is no /run/systemd/generator/run-initramfs-union.mount but
this:

cat /run/systemd/generator/sysroot.mount

[Unit]
SourcePath=/proc/cmdline
Documentation=man:fstab(5) man:systemd-fstab-generator(8)
Before=initrd-root-fs.target

[Mount]
What=live:UUID=2015-06-13-09-16-55-00
Where=/sysroot
Options=ro

So sysroot.mount tries to mount ISO with false output:
mount: unknown filesystem type 'nfs'

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