>From what I understand `--backup-dir` uses a hierarchical backup. And >`--suffix` appends the value
in `--suffix` to the end of each file. What happens when one specifies both `--backup-dir` and `dest`. Is `--backup-dir` a replacement to `dest`, or not ? From: Charles <c...@charlesmatkinson.org> To: lisa-as...@perso.be; rsync@lists.samba.org Subject: Re: Utility of --backup Date: 20/07/2021 02:37:50 Europe/Paris > And let me do what you suggest. What is the difference, and is --backup > better than the other ? Only in conjunction with -backup-dir, for example --backup --backup-dir=_Changed and deleted files/2021/Jul/19@21:21 The man page's entry for --backup suggests using it with either --backup-dir or --suffix On 19/07/2021 19:22, lisa-as...@perso.be wrote: > From: Charles via rsync <rsync@lists.samba.org> > To: rsync@lists.samba.org > Subject: Re: Utility of --backup > Date: 19/07/2021 14:26:59 Europe/Paris > > >IThe --backup option is great for creating "rolling full" backups which > >look exactly like the backed up tree except for the existence of the > >backup directory > > I am not really understanding the "Rolling Full Backup". Suppose I have > a directory > and use `rsync -av --progress --log-file="$logfl" "$source" "$destin"` > > And let me do what you suggest. What is the difference, and is --backup > better than the other ? > > Would the command be > > rsync --backup -v --progress --log-file="$logfl" "$source" "$destin" > > >Here's how a Linux backup directory tree looks as created by backup > >utility bung's bu_rsync script > > +-- bin -> usr/bin > +-- boot > | +-- grub > +-- _Changed and deleted files > | +-- 2021 > | +-- Jul > | | +-- 01@17:45 > | | | +-- opt > | | | | +-- tomcat > | | | +-- root > | | | +-- var > | | | +-- backups > | | | +-- cache > | | | +-- lib > | | | +-- local > | | | +-- log > | | | +-- mail > | | | +-- spool > ... > | | +-- 17@17:46 > ... > | | +-- 18@17:45 > ... > | +-- Jun > ... > | +-- 29@17:45 > ... > | +-- 30@17:45 > ... > +-- dev > +-- etc > ... > > >A "rolling full" backup is great to restore from for small organisations > >which do not do enough restores to be well practised because the backup > >looks exactly like the source except for the additional "_Changed and > >deleted files" directory. > > >Perfect point in time restores are not possible but adequate > >approximations (point in time but with the possibility of some extra > >files) can be done by restoring the last backup and then each of the > >changed and deleted files sets until the latest set after the desired > >point in time >
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