On Fri, 15 May 2015 01:35:55 PM Craig Sanders wrote:
On Fri, May 15, 2015 at 12:35:39PM +1000, Carl Turney wrote:
Prior to doing the complete system backups (as outlined in my last email), I enter Firefox and clear all history.
why? it's not going to make that much difference in time taken or space consumed.
I don't know about Mozilla, but my Chrome cache is about 500M on the laptop I'm using now (which wouldn't rank higher than 3rd place for active web browsing systems I run). That makes a difference in space used. I think that Chrome isn't particularly good about managing the cache, for example I think that the cache file from last year is very unlikely to be of any use. 500M+ of rapidly changing data for each of 3 systems makes a real difference when I'm storing incremental backups on a 500G disk! One thing I've been planning to do is to create a separate BTRFS subvolume for ~/.cache, that would exclude it from the BTRFS snapshot backups as well as the removable media backups (which are from the snapshot backups).
But, during the backup (after booting into Recovery mode), rsync displays the copying of MANY files within this directory...
/home/user/.cache/mozilla/firefox/abcd1234.default/cache2/trash/3363925
Given the names of some of those directories, I wonder if it is safe to delete them (rm -r) just before the backup?
If so, at which level... trash? cache2?
anyway, there's no need to delete before backing up, just tell rsync not to backup that directory.
Of course a decision to not backup files means that the application won't have access to them after a restore. So it's worth knowing what happens if you delete them. A quick test would be a good idea. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/