Advice on a backup script, maybe one is out there already? Post: 302987534

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Top Forums UNIX for Advanced & Expert Users Advice on a backup script, maybe one is out there already? Post 302987534 by rbatte1 on Monday 12th of December 2016 08:19:26 AM

12-12-2016

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If the content is a database, then backing up in this way may also not give you a consistent restore in any case, especially if you are unable to read some of them!

You might be better getting the database tools to make a backup. Another alternate (but I'm guaranteeing it) might be to use LVM snapshots if you OS supports it. This way, you can be sure that the files are idle and although the database might go into crash-recovery (as though you've had a power loss) it should give you a point-in-time restore from when you split off the copy.

What OS are you using?

One worries that this is not a good plan though. If you cannot read all the data, how would you plan to restore it?

On your point about getting it to run faster, it will always depend on a number of factors, such as volume of data, if there is I/O contention etc. I/O contention can occur for various reasons, such as sharing physical media/access path (shared controllers, fibre etc.) or other users even.

Is the device SAN based? There may be a way to use SAN tools to copy a LUN that would give a suitable restore point. Of course it would revert everything on that LUN, so that might not be what you want, but perhaps you could mount the copy LUN as another filesystem and back that up away from the live database.

Can you explain a bit more about your server setup?

Kind regards,
Robin

rbatte1

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LEARN ABOUT DEBIAN

virtuoso-t

VIRTUOSO-T(1)															     VIRTUOSO-T(1)

NAME

       virtuoso-t - OpenLink Virtuoso Opensource Server

SYNOPSIS

       virtuoso-t [-fcnCbDARwMKrBd] [+foreground] [+configfile arg] [+no-checkpoint] [+checkpoint-only] [+backup-dump] [+crash-dump] [+configfile
		  arg] [+restore-crash-dump] [+wait] [+more arg] [+dumpkeys arg] [+restore-backup arg] [+backup-dirs arg] [+debug] [+pwdold arg]
		  [+pwddba arg] [+pwddav arg]
       virtuoso-t [+help]

DESCRIPTION

       This manual page documents briefly the virtuoso-t command.

       This  manual  page was written for the Debian distribution because the original program does not have a manual page.  Instead, it has docu-
       mentation in the 'doc' VAD package.

       virtuoso-t is the OpenLink Virtuoso server

OPTIONS

       A summary of options is included below. For a complete description, see the 'doc' VAD package.

       +foreground
	      run in the foreground

       +configfile
	      use alternate configuration file

       +no-checkpoint
	      do not checkpoint on startup

       +checkpoint-only
	      exit as soon as checkpoint on startup is complete

       +backup-dump
	      dump database into the transaction log, then exit

       +crash-dump
	      dump inconsistent database into the transaction log, then exit

       +crash-dump-data-ini
	      specify the DB ini to use for reading the data to dump

       +restore-crash-dump
	      restore from a crash-dump

       +wait  wait for background initialization to complete

       +mode  specify mode options for server startup (onbalr)

       +dumpkeys
	      specify key id(s) to dump on crash dump (default : all)

       +restore-backup
	      default backup directories

       +backup-dirs
	      run in the foreground

       +debug Show additional debugging info

       +pwdold
	      Old DBA password

       +pwddba
	      New DBA password

       +pwddav
	      New DAV password

FILES

       /etc/virtuoso/virtuoso.ini
	      The configuration file to control the behaviour of the main instance of virtuoso-t.

SEE ALSO

       The programs are documented fully by the 'doc' VAD package.

								   17 April 2013						     VIRTUOSO-T(1)