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I need help setting up LVM snapshots on Ubuntu 16.04

 
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Operating Systems Linux Ubuntu I need help setting up LVM snapshots on Ubuntu 16.04
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Old 09-08-2016
The creation of snapshot is usually with lvconvert for Linux systems. Others use a variety of other LVM commands.

Does the database not include the hot-backup functionality itself? It would be better to use that if you can. Have a look at Backup and Restore Overview - MariaDB Knowledge Base to see if that provides a better plan.

The problem you will have with LVM snapshots is being sure you have the correct definition of your process. The phrasing can be confusing in what it delivers and how. If you have a high-rate update database then some snapshots can expire before your backup completes.

Do you want to really make a copy of the LV, mount that elsewhere and backup from there? You might have a problem in ensuring that the snapshot is a true reflection of a point in time if there are multiple LVs in use for the DB.

Is this the only way?



Robin
 
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LEARN ABOUT DEBIAN

snapconv

snapconv(1)							     Emulators							       snapconv(1)

NAME

       snapconv - Sinclair ZX Spectrum snapshot converter

SYNOPSIS

       snapconv [ -c ] [ -n ] infile outfile

DESCRIPTION

       snapconv converts between ZX Spectrum snapshot files.

OPTIONS

       -c     specifies  that  all data in the output snapshot should be compressed, even if that compression will result in a bigger file than if
	      some data is left uncompressed. This helps compatibility with some buggy programs that can only read entirely compressed .z80 files.

       -n     specifies that the output snapshot should be uncompressed.

       -f     specifies that the A and F and A' and F' registers should be swapped.  Version 0.5.0 and older of  libspectrum(3)  had  a  bug  that
	      resulted	in  these registers being swapped in SZX snapshots only. Version 0.5.1 and newer of libspectrum(3) automatically recognise
	      these snapshots and correct the problem, but this flag is necessary to fix some snapshots created by development	versions  only	of
	      libspectrum(3) which had the bug fixed, but cannot be distinguished from snapshots containing the bug.

       infile specifies the snapshot to be converted. This file can be in any of the snapshot formats supported by libspectrum(3).

       outfile
	      specifies  the  output snapshot. The format will be determined by the file extension and can be in any of the formats libspectrum(3)
	      supports for output.

BUGS

       None known.

SEE ALSO

       fuse(1), fuse-utils(1), libspectrum(3), listbasic(1), snap2tzx(1)

       The comp.sys.sinclair Spectrum FAQ, at
       http://www.worldofspectrum.org/faq/index.html.

AUTHOR

       Philip Kendall (philip-fuse@shadowmagic.org.uk).

Version 1.0.0							16th December, 2010						       snapconv(1)