Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.user > #211896

Re: Debian Buster: Is it safe to use on autodefrag on a Btrfs filesystem that is used for (Restic) backup only with no Btrfs snapshots or subvolumes?

Show all headers | View raw

On Mon 29 Jul 2019 at 14:07:25 (-0400), Stefan Monnier wrote:
> > Is it safe to use autodefrag for my use case?
> 
> It sounds like it might be "safe" (the text doesn't actually say it's
> unsafe, but just that it has downsides).
> 
> I do wonder why you'd want to do that, tho.  Fragmentation is typically
> something that clueless Windows users worry about (a left over from the
> days of FAT filesystems; and even tho it became largely useless under
> NTFS it persisted because it's easier to tell people how to defragment
> than to explain to them why it's not needed any more).
> 
> Do you have a concrete reason to think that defragmentation will bring
> you any tangible benefit?

Btrfs is not my thing, but I looked at the reference that was posted,
and the Gotchas referred to within, and they mention log files having
tens of thousands of extents. Doesn't sound very good.

Cheers,
David.

Back to linux.debian.user | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Debian Buster: Is it safe to use on autodefrag on a Btrfs filesystem  that is used for (Restic) backup only with no Btrfs snapshots or subvolumes? Judah Richardson <judahrichardson@gmail.com> - 2019-07-29 17:30 +0200
  Re: Debian Buster: Is it safe to use on autodefrag on a Btrfs filesystem that is used for (Restic) backup only with no Btrfs snapshots or subvolumes? Stefan Monnier <monnier@iro.umontreal.ca> - 2019-07-29 20:10 +0200
    Re: Debian Buster: Is it safe to use on autodefrag on a Btrfs  filesystem that is used for (Restic) backup only with no Btrfs snapshots or  subvolumes? David Wright <deblis@lionunicorn.co.uk> - 2019-07-29 23:50 +0200
      Re: Debian Buster: Is it safe to use on autodefrag on a Btrfs filesystem that is used for (Restic) backup only with no Btrfs snapshots or subvolumes? Stefan Monnier <monnier@iro.umontreal.ca> - 2019-07-30 00:00 +0200
    Re: Debian Buster: Is it safe to use on autodefrag on a Btrfs filesystem that is used for (Restic) backup only with no Btrfs snapshots or subvolumes? Mart van de Wege <mvdwege@gmail.com> - 2019-07-31 13:00 +0200
      Re: Debian Buster: Is it safe to use on autodefrag on a Btrfs  filesystem that is used for (Restic) backup only with no Btrfs snapshots or subvolumes? Judah Richardson <judahrichardson@gmail.com> - 2019-07-31 16:10 +0200

csiph-web