mkfs.ext3: Permission denied while trying to determine filesystem size

Mon May 30 20:14:30 UTC 2005

On Mon, 30 May 2005 15:02:44 CDT, Justin Conover said:

> Not so fast on "A"  :D

Well, the *current* evidence indicates you're not off the deep end
on this specific issue, anyhow.. ;)

> fedora.img is part of some Xen stuff I was doing, which initially
> started this whole thing of mkfs not working.

We probably need to come back sometime and address the issues of mkfs
on a file intended for loopback-mount - that's a separate borkage..

> > --- file_contexts/program/lvm.fc.dist   2005-05-20 14:53:12.000000000 -0400
> > +++ file_contexts/program/lvm.fc        2005-05-30 13:10:03.000000000 -0400
> > @@ -12,6 +12,7 @@
> >  /etc/lvm/lock(/.*)?            system_u:object_r:lvm_lock_t
> >  /var/lock/lvm(/.*)?            system_u:object_r:lvm_lock_t
> >  /dev/lvm               -c      system_u:object_r:fixed_disk_device_t
> > +/dev/mapper/.*         -c      system_u:object_r:fixed_disk_device_t
> >  /dev/mapper/control    -c      system_u:object_r:lvm_control_t
> >  /lib/lvm-10/.*         --      system_u:object_r:lvm_exec_t
> >  /lib/lvm-200/.*                --      system_u:object_r:lvm_exec_t
> > 
> > At least on my system, that leaves the /dev/mapper/* entries more sane....
> > 
> > (Justin - the above patch won't fly unless you have policy-sources installe
d.
> > If you're feeling brave, crazy, and adventurous, make a similar change to
> > /etc/selinux/strict/contexts/files/file_contexts, and then do a
> > 'restorecon -v -R /dev' - make sure to save a backup of file_contexts first
.. ;)
> > 
> > After that, you *should* be able to do a 'mkfs.ext3 /dev/mapper/VolGroup00-LogVol10'

> I have no problem doing some of this if someone else chimes in too,
> it's a new box I'm working on so there is nothing that a new install
> wont cure for a borked system.

If you can try the file_contexts tweak I mentioned, and verify that you can or can't
do a mkfs on /dev/dm-N and /dev/mapper/VolGrouo00-LogVol10, that would help some (and
at least give you a known-good workaround while we come up with a proper fix. Even if
I've recommended something stupid, a re-install will clear it. ;)

/dev/VolGroup00/LogVol?? will require some other fix which I'd speculate on, but
I have to be at a barbeque in 30 mins.. ;)
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