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Re: cross-platform backup tool incremental rdiff-backup takes long
From: |
Robert Nichols |
Subject: |
Re: cross-platform backup tool incremental rdiff-backup takes long |
Date: |
Tue, 18 Oct 2022 08:01:39 -0500 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.5.0 |
On 10/18/22 1:37 AM, Jonas Schöpf wrote:
I deleted a lot of stuff on my machine (around 200GB) and if I do a new backup
I have to abort it after 9 hours as it does not finish.
iostat -x -m 3 shows that %util is always between 70 and 95.
So I assume that IO is again a bottleneck, but shouldn't it be easy for
rdiff-backup to just delete the files from the backup?
Is there a way how I can speed up this process?
Deleting a file is not a simple operation. Since rdiff-backup always works
backward from the current mirror, restoring a file as of some previous date
requires storing a snapshot of the last known state of that file in the
increments. By default, those snapshots are compressed except for file names
that match the --no-compression-regexp (see Globals.py for the default
expression), and that compression can take a lot of time.
You might want to take a look at the "--no-compression" option in the manpage.
--
Bob Nichols "NOSPAM" is really part of my email address.
Do NOT delete it.