03-07-2015
Backups and restores in RHEL
Hi,
I am new to RHEL. and started exploring/learning RHEL from last few months.
I understood LVM and other system admin concepts. But I did not get a chance to explore backup/restore options in RHEL.
Can you please explain the procedure on how backups/restores work in linux environment?
- Once we install RHEL, how we usually take OS backups (how often) in organization (small/big) and how we restore when needed.
- As a LINUX sys admin, is it our responsibility to backup/restore the USER/App/Databse information on RHEL server ? If yes, how we are running backups/restore ?
I am already working on AIX, just want to compare to see if anything similar tools in LINUX.
- We've mksysb (OS backup utility) in AIX to capture/restore rootvg/root fs. Is there any similar command in RHEL ?
Please explain.
Thank you
Last edited by rbatte1; 03-09-2015 at 10:06 AM..
Reason: Added LIST=1 tags and corrected spelling/case
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LEARN ABOUT HPUX
vgcfgrestore
VGCFGRESTORE(8) System Manager's Manual VGCFGRESTORE(8)
NAME
vgcfgrestore - restore volume group descriptor area
SYNOPSIS
vgcfgrestore [-d|--debug] [-f|--file filename] [-l[l]|--list] [-h|--help] [-M|--Metadatatype1|2] [-t|--test] [-v|--verbose] VolumeGroupName
DESCRIPTION
vgcfgrestore allows you to restore the metadata of VolumeGroupName from a text backup file produced by vgcfgbackup. You can specify a
backup file with --file. If no backup file is specified, the most recent one is used. Use --list for a list of the available backup and
archive files of VolumeGroupName.
OPTIONS
-l | --list -- List files pertaining to VolumeGroupName
List metadata backup and archive files pertaining to VolumeGroupName. May be used with the -f option. Does not restore Vol-
umeGroupName.
-f | --file filename -- Name of LVM metadata backup file
Specifies a metadata backup or archive file to be used for restoring VolumeGroupName. Often this file has been created with vgcfg-
backup.
See lvm for common options.
REPLACING PHYSICAL VOLUMES
vgdisplay --partial --verbose will show you the UUIDs and sizes of any PVs that are no longer present. If a PV in the VG is lost and you
wish to substitute another of the same size, use pvcreate --restorefile filename --uuid uuid (plus additional arguments as appropriate) to
initialise it with the same UUID as the missing PV. Repeat for all other missing PVs in the VG. Then use vgcfgrestore --file filename to
restore the volume group's metadata.
SEE ALSO
lvm(8), vgcreate(8)
Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) VGCFGRESTORE(8)