On Thursday 21 August 2014 at 01:03:20, Lennart Poettering wrote: > On Tue, 19.08.14 15:46, Ivan Shapovalov (intelfx...@gmail.com) wrote: > > > On Monday 18 August 2014 at 22:04:29, Ivan Shapovalov wrote: > > > [..] > > > > > > > > > > Even if initramfs-only, ordering dependencies still need to be worked > > > > > out. > > > > > Inside of initramfs, neither systemd-fsck-root.service nor > > > > > systemd-remount-fs.service > > > > > do exist, so there's apparently nothing to reliably order against. > > > > > > > > Well, in the initrd the root dir is mounted to /sysroot, which means you > > > > should be able to order yourself before sysroot.mount. > > > > > > > > Lennart > > > > > > > > > > > > > > ...missing sysroot's fsck, as well as any other x-initrd mounts and their > > > fsck instances. > > > > > > Seems that sysroot.mount alone isn't sufficient. > > > > ...Anything on this? > > > > Should we add yet another passive target(s), something like fsck-pre? I > > don't > > actually know what is the best way to tackle this. The resume unit shall be > > activated before any writes to any block devices, including fsck, cryptsetup > > and whatever else. > > Hmm, so I though a bit about this, and I think we should make the > following changes to systemd: > > a) move local-fs-pre.target before all the fsck. This way we can make > use of it as a barrier against modifications of any fs. > > > b) introduce initrd-fs-pre.target that then plays a similar role, but in > the initrd. > > A service that wants to run before any fs is touched should then order > itself before both and everything should be good. > > If this makes sense, I would be happy to take a patch. > > I'd be willing to merge a good patch for a generator + mini-tool that > parse the resume= option into systemd as well, btw.
So I have the prototype ready, but it seems that udevd indirectly depends on remounting / read-write. systemd-remount-fs.service -> systemd-sysusers.service -> systemd-udevd.service This breaks the idea at least in the initramfs-less case (and also in the pathological case of including systemd-sysusers.service into initramfs). What would you suggest? -- Ivan Shapovalov / intelfx /
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