Re: backup of backup or alternating backups?
On Mon, 07 Oct 2024 20:44:44 +0100
"Jonathan Dowland" <jmtd@debian.org> wrote:
> It was 18 years ago so I can't remember that clearly, but I think it
> was a mixture of inodes expense and an enlarged amount of CPU time
> with the file churn (mails moved from new to cur, and later to a
> separate archive Maildir, that sort of thing). It was probably ext3
> given the time.
Interesting.
I've used rsnapshot for several years now with no such issue. My
rsnapshot repository resides on ext4, on its own LVM logical volume, on
top of an encrypted RAID 5 array on four four terabyte spinning rust
drives.
root@hawk:~# df /crc/rsnapshot/
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/hawk--vg--raid-rsnapshot 247G 179G 55G 77%
/crc/rsnapshot root@hawk:~# df -i /crc/rsnapshot/
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/mapper/hawk--vg--raid-rsnapshot 16M 3.2M 13M 21%
/crc/rsnapshot root@hawk:~#
As you can see, I am not greatly worried about running out of inodes.
I have 11G of mail, also in maildir format, to back up. Since the
archive goes back a year, I probably have more than 11G in the archive.
Plus other stuff: /etc, etc., etc..
As for the churn, that should be less of an issue now than it might have
been 18 years ago, even though my motherboard dates to 2015. I
definitely notice it (the hard drive activity light if nothing else),
but it doesn't slow me down at all.
--
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https://charlescurley.com
https://charlescurley.com/blog/
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