Re: [linux-lvm] Help! unable to mount lv's - can't see why!

["Robin Edgar - Tripany" <red@tripany.com>]

Fair enough, but I would very much like to access the files and determine
later what has errors and what doesn't - at the moment, I can only do this
with the docu lv and none of the others...

You were right, I did manage to get a whole load of lost+found entries using
fsck after the mount. The docu entry was on the physical extent though, and
seems to be working fine.
Anyway I thought I'd upgrade LVM to 1.0.5 from 1.0.1 and refit the disks to
the 'old' configuration (4 disks + 1 for backup), to do a pvmove.
Now when I do a pvscan, it finds all the disks, but also the disk I did the
dd to, as part of the vg. So I de-activated the vg, and tried to reduce the
vg /dev/hdb1, hoiwever this is not working:

# vgreduce tripserv_vol /dev/hdb1
vgreduce -- ERROR: can't reduce volume group "tripserv_vol" by used physical
volume "/dev/hdb1"

# pvscan -v
pvscan -- reading all physical volumes (this may take a while...)
pvscan -- walking through all physical volumes found
pvscan -- ACTIVE   PV "/dev/hdg1" of VG "tripserv_vol" [38.16 GB / 7.93 GB
free]
pvscan -- ACTIVE   PV "/dev/hdh1" of VG "tripserv_vol" [38.16 GB / 8.01 GB
free]
pvscan -- inactive PV "/dev/hde1" of VG "tripserv_vol" [55.91 GB / 0 free]
pvscan -- ACTIVE   PV "/dev/hdf1" of VG "tripserv_vol" [55.91 GB / 3.37 GB
free]
pvscan -- ACTIVE   PV "/dev/hdb1" of VG "tripserv_vol" [55.91 GB / 0 free]
pvscan -- total: 5 [244.08 GB] / in use: 5 [244.08 GB] / in no VG: 0 [0]

If i vgchange -a n it will deactivate them all, but then I get:
# vgreduce tripserv_vol /dev/hdb1
vgreduce -- ERROR: volume group "tripserv_vol" is not active

After I restore the vg to it's 'old' configuration, I want to empty
/dev/hdb1 and add it to the volume group. Then doing a pvmove -i /dev/hde1
should move all the data it can find there to the rest of the vg shouldn't
it?

Thank you for all your help so far,
Robin Edgar

----- Original Message -----
From: "Heinz J . Mauelshagen" <mauelshagen@sistina.com>
To: <linux-lvm@sistina.com>
Sent: Thursday, September 19, 2002 12:04 PM
Subject: Re: [linux-lvm] Help! unable to mount lv's - can't see why!


> On Wed, Sep 18, 2002 at 04:42:54PM +0200, Robin Edgar - Tripany wrote:
> > Doing the lvdisplay -v shows that pv /dev/hde1 had bits of all of the
lv's
> > on it (including the docu lv, which I *can* mount).
>
> Then it is most likely, that all filesystems will have errors.
>
> Regards,
> Heinz    -- The LVM Guy --
>
>
> >
> > ----- Original Message -----
> > From: "Heinz J . Mauelshagen" <mauelshagen@sistina.com>
> > To: <linux-lvm@sistina.com>
> > Sent: Wednesday, September 18, 2002 3:59 PM
> > Subject: Re: [linux-lvm] Help! unable to mount lv's - can't see why!
> >
> >
> > > On Wed, Sep 18, 2002 at 03:56:36PM +0200, Robin Edgar - Tripany wrote:
> > > > I've discovered that there is a problem with /all/ the superblocks
> > except for those of the /docu lv (see below). It does lead me to another
> > question though - only one of the HDs crashed: is it possible that LVM
wrote
> > all the superblocks on 1 HD?! If so this seems like a pretty serious bug
in
> <SNIP>
> > > linux-lvm mailing list
> > > linux-lvm@sistina.com
> > > http://lists.sistina.com/mailman/listinfo/linux-lvm
> > > read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
> > >
> > >
> >
> >
> >
> > _______________________________________________
> > linux-lvm mailing list
> > linux-lvm@sistina.com
> > http://lists.sistina.com/mailman/listinfo/linux-lvm
> > read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
>
> *** Software bugs are stupid.
>     Nevertheless it needs not so stupid people to solve them ***
>
>
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>
> Heinz Mauelshagen                                 Sistina Software Inc.
> Senior Consultant/Developer                       Am Sonnenhang 11
>                                                   56242 Marienrachdorf
>                                                   Germany
> Mauelshagen@Sistina.com                           +49 2626 141200
>                                                        FAX 924446
>
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>
>