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#1 2007-01-18 00:29:00

ravster
Member
From: Queen's U, Kingston, Canada
Registered: 2004-05-02
Posts: 285
Website

How do I share an lvm partition between two systems?

Hi,
  I have a regular system which I usually work from, and I created a lvm partition using that system to store files in. I have another Arch system on the same harddrive (different partition) and I would like to know how I can access the lvm partition using the second system.
  I have the following in my new system

/dev/sda8 swap swap defaults 0 0
/dev/sda9 / ext3 defaults 0 1
/dev/sda5 /mnt/arch ext3 defaults 0 0
/dev/sda2 /mnt/boot ext2 defaults 0 0
/dev/sda6 /mnt/arch-home reiserfs defaults 0 0
/dev/ravilvg/lvmpartition /mnt/lvmpartition reiserfs defaults,users 0 0

  When I try to mount '/mnt/lvmpartition', I get

[root@myhost ravi]# mount /mnt/lvmpartition/
mount: special device /dev/ravilvg/lvmpartition does not exist

  I have put USELVM="yes" in my rc.conf, and on bootup I get the message that Device mapper is not in the kernel. 'lsmod' shows the dm_mod module is not loaded, but loading the module and running the mount command still does not work.
  Here are the outputs of the lvm commands

[root@myhost ravi]# lvm pvscan
  PV /dev/sda10   VG ravilvg   lvm2 [24.20 GB / 0    free]
  Total: 1 [24.20 GB] / in use: 1 [24.20 GB] / in no VG: 0 [0   ]
[root@myhost ravi]# lvm vgscan
  Reading all physical volumes.  This may take a while...
  Found volume group "ravilvg" using metadata type lvm2
[root@myhost ravi]# lvm lvscan
  inactive          '/dev/ravilvg/lvmpartition' [24.20 GB] inherit

  Thanks,
Ravster

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#2 2007-01-19 11:48:36

FUBAR
Member
From: Belgium
Registered: 2004-12-08
Posts: 1,029
Website

Re: How do I share an lvm partition between two systems?

Are you using a stock kernel? Check your /etc/mkinitcpio.conf for LVM and RAID support. It seems strange to me there's no LVM support during boot up.

I don't know the exact LVM commands by heart to activate the volumes. I'll check tonight to see if I can help you out.


A bus station is where a bus stops.
A train station is where a train stops.
On my desk I have a workstation.

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#3 2007-01-21 18:18:51

ravster
Member
From: Queen's U, Kingston, Canada
Registered: 2004-05-02
Posts: 285
Website

Re: How do I share an lvm partition between two systems?

Hi,
  You were right, the solution was to simply activate the volume
  What I did was

lvm lvchange -ay /dev/ravilvg/lvmpartition

  The lvm partition is now accesible from both systems
Thanks for your help,
Ravster

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