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Full Discussion: Info on /dev/dm files
Operating Systems Linux Red Hat Info on /dev/dm files Post 302662621 by prithvirao17 on Tuesday 26th of June 2012 11:17:17 PM
Old 06-27-2012
Info on /dev/dm files

Hi,

I was looking at my /dev directory and found some files of the pattern dm?. I searched on google and found that it is a device manager file for LVM. But nothing but that.

Can someone give me some info on when these files are created and if we can use this as instead of /dev/mapper/logvol's in the /etc/fstab?

Thanks.

If it helps, I use CentOS 6.2.

Last edited by prithvirao17; 06-27-2012 at 12:18 AM.. Reason: Extra info
 

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

NAME
vgmknodes - create volume group directory and special files SYNOPSIS
vgmknodes [-d|--debug] [-h|--help] [-v|--verbose] [VolumeGroupPath | VolumeGroupName...] DESCRIPTION
vgmknodes creates the volume group directory and special files for an existing volume group. This is to restore deleted special files. Owner, group and file permissions will not be restored. OPTIONS -d, --debug Enables additional debugging output (if compiled with DEBUG). -h, --help Print a usage message on standard output and exit successfully. -v, --verbose Gives verbose information about vgmknode's activities. Examples "vgmknodes /dev/vg02" tries to remove /dev/vg02 and all contained special files and then creates them again based on the VGDA. DIAGNOSTICS
vgmknodes returns an exit code of 0 for success and > 0 for error: 1 invalid volume group name 2 error checking existence of volume group 3 error removing volume group device special files 4 error creating volume group device special files 95 driver/module not in kernel 96 invalid I/O protocol version 97 error locking logical volume manager 98 invalid lvmtab (run vgscan (8)) 99 invalid command line See also lvm(8), vgcreate(8) AUTHOR
Heinz Mauelshagen <Linux-LVM@Sistina.com> Heinz Mauelshagen LVM TOOLS VGMKNODES(8)
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