On 11/23/2010 04:32 PM, Lennart Poettering wrote: > On Tue, 23.11.10 16:12, Doug Ledford (dledford@xxxxxxxxxx) wrote: > >> On 11/23/2010 03:48 PM, Lennart Poettering wrote: >>> Heya! >>> >>> I hereby want to let everybody know that in the next days I will turn on >>> /var/run and /var/lock on tmpfs on Rawhide/F15. This is in accordance >>> with the following accepted F15 feature: >>> >>> https://fedoraproject.org/wiki/Features/var-run-tmpfs >> >> Will the tmpfs mounts be available in the initramfs, or only on the >> running system? > > Since /var/run is a subdir of /var which might be separate file system > it is difficult mounting /var/run before /var. That means that it won't > be available in the intird. > > (Yes, one can do stuff with show-through mount hierachies, that would > allow replacing /var later on, but I am not a fan of such hackery.) Hackery is in the eye of the beholder. > Also note that by now it's somewhat standard that code that needs to be > run as part of early boot creates a subdir in /dev, such as /dev/.udev > or /dev/.systemd. Not super-pretty, but I guess it's too late to > complain about that. Those places all exist *because* no one took the time to create an initrd managed writable /var/run or /var/lock. Using their existence to justify continuing down a path that places files where they don't belong is faulty logic. I took a *major* beating by the upstream mdadm maintainer over the fact that we are putting files in /dev/ that don't belong there. And he's right, we *shouldn't* be putting those files there. Continuing a band aid hack because someone did it initially is not the right course of action. > Ideally the FHS would have never specified that /var/run and /var/lock > would lie beneath /var, but I guess that's too late now. One failed specification isn't really a good reason to justify creating a de facto second failed specification. -- Doug Ledford <dledford@xxxxxxxxxx> GPG KeyID: CFBFF194 http://people.redhat.com/dledford Infiniband specific RPMs available at http://people.redhat.com/dledford/Infiniband
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