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Top Forums UNIX for Dummies Questions & Answers Integrity check for the backup Post 302905405 by frhling on Wednesday 11th of June 2014 10:43:25 AM
Old 06-11-2014
Actually I have nothing to do with backup as a software already does it. I have just to monitor the file systems and keep track if they are really backed up due to the high availibility cluster architecture which is used so it would be difficult to keep track if file systems are backed up ok.
as I created some big files and compared the two files with CRC, MD5 and cmp(Byte by Byte), I see Byte by Byte is a faster approach.

for the case that some files change between backup and verify I have thought of this: If timestamp of file > timestamp of backup: go to the next file

I think what you explained has more relation to backup and not monitoring file systems.
 

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

NAME
vgcfgbackup - backup volume group descriptor area SYNOPSIS
vgcfgbackup [-d|--debug] [-f|--file filename] [-h|--help] [--ignorelockingfailure] [-P|--partial] [-v|--verbose] [VolumeGroupName...] DESCRIPTION
vgcfgbackup allows you to backup the metadata of your volume groups. If you don't name any volume groups on the command line, all of them will be backed up. In a default installation, each volume group gets backed up into a separate file bearing the name of the volume group in the directory /etc/lvm/backup. You can write the backup to an alternative file using -f. In this case if you are backing up more than one volume group the filename is treated as a template, and %s gets replaced by the volume group name. NB. This DOESN'T backup user/system data in logical volume(s)! Backup /etc/lvm regularly too. OPTIONS
See lvm for common options. SEE ALSO
lvm(8), vgcfgrestore(8) Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) VGCFGBACKUP(8)
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