[Dirvish] Replacing backup drive

Rich Shepard rshepard at appl-ecosys.com
Sat Jul 14 12:46:00 UTC 2018


On Fri, 13 Jul 2018, Nathan Hunsperger wrote:

> So, the full command I would use is "sudo rsync -aSHAX -v --stats
> /mnt/olddrive/ /mnt/newdrive". The trailing slash on olddrive is required,
> and will result in the root of the new drive having the same attributes as
> the old drive.

Nathan,

   This, too, is valuable information.

> As to the question about initializing the FS on the new drive -- One thing
> I would check is how your current backup drive inode utilization (tune2fs
> -l) is looking. The mechanism Dirvish uses to save disk space results in
> higher-than-normal inode usage. How high depends on how many backups you
> keep and the nature of the data you are backing up. If your current "Free
> inodes" to "Inode count" ratio looks good, just create the new FS as
> normal. If you are running short on inodes, read up on mke2fs -i option. 
> You will most likely be fine with the defaults.

   Very interesting. I've not needed to learn about inodes before. Thank you.

Regards,

Rich




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