[linux-lvm] LVM and resize

[Heinz J . Mauelshagen]

On Tue, Oct 07, 2003 at 07:13:14PM +0200, Reidar Westvik wrote:
> Hi Heinz,
> 
> Thanks for your quick reply! :)
> 
> I am still able to mount the filesystem, but after a while it goes into
> read-only mode, witch is fine. However I cannot take backup of the volume
> cause it's to big, but it's not "the end of the world" if the data gets
> lost, but we would like to keep data.
> 
> I've read about using pvmove -i and when i try to run it i get "command not
> implemented yet". Is there a way around this ?

You mean with LVM2 ? Not yet.
Will probably be in 2.2.

Regards,
Heinz    -- The LVM Guy --


> 
> Reidar
> ----- Original Message ----- 
> From: "Heinz J . Mauelshagen" <mauelshagen at sistina.com>
> To: <linux-lvm at sistina.com>
> Sent: Tuesday, October 07, 2003 3:53 PM
> Subject: Re: [linux-lvm] LVM and resize
> 
> 
> >
> > Looks like you are caught IRT to shrinking, because of the fsck errors.
> >
> > If you're still able to mount the filesystem, you definitely want to take
> a backup
> > first in order to preserve as much of your files as possible.
> >
> > Aftwards (presumably you can add another >=120g drive to your VG with
> vgextend) you
> > want to try moving the data off to that other disk using "pvmove -i ...",
> then
> > removing the failing one (vgreduce).
> >
> > Using device-mapper/LVM2, which enables you to remove the drive in
> question
> > (removing LVs allocated to that drive as well), doesn't help you here,
> presumably
> > you just have that one huge Logical Volume.
> >
> > Regards,
> > Heinz    -- The LVM Guy --
> >
> > On Mon, Oct 06, 2003 at 04:25:39PM +0200, Reidar Westvik wrote:
> > > Hi,
> > >
> > > I don't know if my question in something that Sistina supports, but i
> need some pointers to make this work.
> > >
> > > We're running a Slackware 9.0 server with kernel 2.5.64 (gcc ver. 2.95.3
> 20010315) also on this server we have a LVM volume of 1TB spread over 120GB
> IDE disks. Now, it seems like one of the harddrives has failed in some way.
> Filesystem on the volume is EXT3.
> > >
> > > When i mount the volume syslog says: "kernel: EXT3-fs warning: mounting
> fs with errors, running e3fschk is recommended" So i've unmounted the volume
> and run e2fschk on the LVM volume. After a long wait (2 days in fact) the
> server hangs, when its checking the part of the volume that is on hdf. The
> box just dies, and only a powercycle will bring it back up again. The
> syslogs displays the following info:
> > > "kernel: hdf: dma_timer_expiry: dma status == 0x61"
> > > "kernel: hdf: (__ide_dma_test_irq) called while not waiting""
> > >
> > > These are the last events of syslog before it's starts to reboot.
> > >
> > > Now, after what i've read the way to deal with this issue without loss
> of data is to shrink the volume with aprox. 120gb (there is enough free
> space) and then exclude the defective drive from the logical volume and its
> physical groups, and then add a healthy disk for so to increase the volume
> back to its original size.
> > >
> > > However LVM resize tools will not allow resizing of a volume that has a
> filsystem marked with errors. And if i try to force the resize the server
> hangs. I have tryed to resize with both "e2fsadm" and "resize2fs" but they
> both have problem resizing since it has errors.
> > >
> > > So this kinda puts me back to basics, is there a way for me to remove
> this disk without loosing data on the volume ?
> > >
> > > All awnsers are very much apriciated! :)
> > >
> > > Best Regards
> > > Reidar
> > _______________________________________________
> > linux-lvm mailing list
> > linux-lvm at sistina.com
> > http://lists.sistina.com/mailman/listinfo/linux-lvm
> > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> >
> >
> >
> 
> 
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm at sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

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Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Am Sonnenhang 11
                                                  56242 Marienrachdorf
                                                  Germany
Mauelshagen at Sistina.com                           +49 2626 141200
                                                       FAX 924446
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