I explain to you. I have various VMs and from those servers I only backup the data and so it will remain for all the reasons you explained to me. of a single VM, which is a windows10, there is software installed that acts as a switchboard and has various installations to make it work including java and various plug-ins which are not backed up so in case of machine crash to install new the whole switchboard is crazy, instead if I copied the whole VM in case of crash I recover everything including the operating system
Il giorno gio 12 gen 2023 alle ore 14:32 G.W. Haywood via BackupPC-users < backuppc-users@lists.sourceforge.net> ha scritto: > Hi there, > > On Thu, 12 Jan 2023, lu lu wrote: > > > On Wed, 11 Jan 2023, G.W. Haywood wrote: > > > > On Wed, 11 Jan 2023, lu lu wrote: > > > > > > > ... is it possible with backuppc to backup a complete virtual > machine? > > > > ... > > > > > > Yes, but it's pointless. You may as well just make a copy. > > > > > > There are better ways to do what you want, for example you might look > > > into snapshotting filesystems. > > > > > ... > > Can you explain better what you mean? > > Read the documentation. > > One of the most important features of BackupPC is its deduplication. > > That means even if it keeps hundreds of backups, it need only keep one > copy of any particular file if the file hasn't changed from one backup > to the next. > > If you backup an entire VM as a file it will always be different (from > minute to minute, let alone from backup to backup). Not only will the > BackupPC system not be able to deduplicate the file, it probably won't > be able even to complete a copy before the file has changed - so files > it tries to copy might not actually be usable. You might need to stop > the VM while the backup is taking place in order to get an internally > consistent, usable result. > > Snapshotting filesystems 'freeze' an image of the filesystem at some > particular time but they permit that filesystem to continue working > normally. You can then copy any frozen files at your leisure, without > resorting to things like stopping your VMs during backups. > > Backing up large databases for example may need similar consideration. > > Why would you want to back up a complete VM anyway? It's usually much > better to have a template for the VM and then back up for example just > the user data, which will usually be tiny by comparison with a full VM. > > -- > > 73, > Ged. > > > _______________________________________________ > BackupPC-users mailing list > BackupPC-users@lists.sourceforge.net > List: https://lists.sourceforge.net/lists/listinfo/backuppc-users > Wiki: https://github.com/backuppc/backuppc/wiki > Project: https://backuppc.github.io/backuppc/ >
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