Bug 134531 - pvmove fails with device-mapper error
pvmove fails with device-mapper error
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: lvm2 (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Alasdair Kergon
Depends On:
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Reported: 2004-10-04 10:34 EDT by Marc Wallman
Modified: 2007-11-30 17:07 EST (History)
0 users

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Doc Type: Bug Fix
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Last Closed: 2004-10-04 16:36:36 EDT
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Description Marc Wallman 2004-10-04 10:34:48 EDT
Description of problem:

pvmove fails with device-mapper error.

The system with the problem was installed from scratch with 
a root LVM filesystem. After installation, an old LVM1 volume
group (localvg1) was converted to LVM2 and imported into new 
volume group (localvg2). All volumes function properly other
than the pvmove failing. The old volume group was created
under RHEL v3WS.

Version-Release number of selected component (if applicable):


How reproducible:

Every time

Steps to Reproduce:
1. Run pvmove
Actual results:

[root@rutabaga ~]# pvmove -v -n /dev/localvg2/home /dev/sda1 /dev/hda2
    Finding volume group "localvg2"
    Archiving volume group "localvg2" metadata.
    Creating logical volume pvmove0
  mirror: Required device-mapper target(s) not detected in your kernel
[root@rutabaga ~]#    

Expected results:

The move should succeed.

Additional info:
Comment 1 Alasdair Kergon 2004-10-04 16:36:36 EDT
You'll need to load the dm-mirror module into your kernel.

Newest 'mkinitrd' see this done automatically at boot time.

(See also bz #122991.)

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