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Special Forums Hardware Filesystems, Disks and Memory Can I Use Loopback Devices with LVM? Post 64607 by deckard on Tuesday 1st of March 2005 11:55:09 PM
Old 03-02-2005
Can I Use Loopback Devices with LVM?

I've got a RedHat 9 box with LVM support in a 2.4.22 kernel. What I would like to do is take a set of empty files created with 'dd' and concatenate them into a volume group. I've done a good deal of googling, and it seems that this is something that can be done. But when I try to use 'pvcreate' with a plain file, I get this error:

pvcreate -- ERROR "pv_get_size(): ioctl" getting size of physical volume "vdisk1.dsk"


pvcreate [-d|--debug] [-f[f]|--force [--force]] [-h|--help]
[-s|--size PhysicalVolumeSize[kKmMgGtT]] [-y|--yes] [-v|--verbose]
[--version] PhysicalVolume [PhysicalVolume...]

I searched for this error with Google and only found one hit which didn't get any replies other than "it should work". Any ideas why it's not working?
 

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PVREMOVE(8)                                                   System Manager's Manual                                                  PVREMOVE(8)

NAME
pvremove - remove a physical volume SYNOPSIS
pvremove [-d|--debug] [-h|--help] [-t|--test] [-v|--verbose] [--version] [-f[f]|--force [--force]] [-y|--yes] PhysicalVolume [PhysicalVol- ume...] DESCRIPTION
pvremove wipes the label on a device so that LVM will no longer recognise it as a physical volume. OPTIONS
See lvm(8) for common options. -ff, --force --force Force the removal of a physical volume belonging to an existing volume group. Normally vgreduce(8) should be used instead of this command. You cannot remove a physical volume which in use by some active logical volume. -y, --yes Answer yes to all questions. SEE ALSO
lvm(8), pvcreate(8), pvdisplay(8), vgreduce(8) Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) PVREMOVE(8)
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