glabel(8) a gmirror(8) doesn't work

[Valentin Bud]

On Wed, Jun 10, 2009 at 3:20 PM, dhaneshk k <dhaneshkk at hotmail.com> wrote:

>  List members;
>
> http://www.freebsd.org/doc/en/books/handbook/geom-glabel.html
>
> Starting with FreeBSD 7.2, the glabel(8)<http://www.FreeBSD.org/cgi/man.cgi?query=glabel&sektion=8>class supports a new label type for
> UFS file systems, based on the unique file system id, ufsid.
>
> Is the above clause  applicable in this case ? instead of using  tunefs  -L
>
>
> can we use#  glabel status  ?
>
> and can use the ufsid labels   of  /dev/ufsid/    and  edit  /etc/fstab
> entries  for the partitions?
>

Well yes you are right. The point of labeling the partitions was/is to
make the names more easier to remember IMO. Remembering a
string (the ufsid) is not quite my specialty. Anyway thanks for the heads
up.

v


>
>
>
>
>
> > From: valentin.bud at gmail.com
> > Date: Wed, 10 Jun 2009 09:12:47 +0300
> > To: freebsd-questions at freebsd.org
> > Subject: glabel(8) a gmirror(8) doesn't work
>
> >
> > Hello community,
> >
> > Yesterday I have installed FBSD 7.2-RELEASE. I have installed on a mirror
> > created with gmirror(8). All I have modified on this system is that I
> have
> > updated the sources, rebuild the world and kernel and of course install.
> >
> > I have named the mirror system0 and all worked well. Now the problem
> > is that i want to glabel the partitions on the mirror so i have followed
> the
> > following
> > procedure:
> > 1. reboot to single user
> > 2. mount -a
> > 3. tunefs -L var /dev/mirror/system0s1d
> > This commands exits with "Failed to write superblock".
> >
> > After reading the man of gmirrror(8) and glabel(8) i have noticed that
> both
> > of them
> > store metadata on the last sector of the provider. From this results that
> > what I want
> > to do is not possible, at least my logic tells me that. Since gmirror
> wrote
> > metadata
> > to the last sector of the provider, glabel tries to rewrite it and the
> > system stops the
> > process to protect the filesystem. But then again for gmirror the
> providers
> > are
> > the two hdd i use for mirroring and for glabel the provider is the mirror
> > itself. That's
> > again what my logic tells me. So i think there is some kind of separation
> > between the
> > two modules and things should work.
> >
> > I have searched a bit but couldn't find any relevant info on labeling a
> > mirror. I just
> > want to know if this is possible and if it's not I'd like to understand
> why.
> >
> > Labeling a partition is not a must-have but it's sure nice :).
> >
> > thanks,
> > v
> >
> > --
> > network warrior since 2005
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-- 
network warrior since 2005