Re: SOLVED Re: Disk corruption and performance issue.

From	Tim Woodall <debianuser@woodall.me.uk>
Newsgroups	linux.debian.user
Subject	Re: SOLVED Re: Disk corruption and performance issue.
Date	2024-02-26 22:40 +0100
Message-ID	<IbQRA-cQ2g-11@gated-at.bofh.it> (permalink)
References	(2 earlier) <HYDyN-4yGn-7@gated-at.bofh.it> <IbNTH-cOi1-5@gated-at.bofh.it> <IbOwp-cOKI-5@gated-at.bofh.it> <IbP97-cOXT-1@gated-at.bofh.it> <IbQeS-cPA4-3@gated-at.bofh.it>
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On Mon, 26 Feb 2024, Gremlin wrote:

re running fstrim in a vm.

> The Host system takes care of it
>
I guess you've no idea what iscsi is. Because this makes no sense at
all. systemd or no systemd. The physical disk doesn't have to be
something the host system knows anything about.

Here's a thread of someone wanting to do fstrim from a vm with iscsi
mounted disks.

https://serverfault.com/questions/1031580/trim-unmap-zvol-over-iscsi

And another page suggesting you should.

https://gist.github.com/hostberg/86bfaa81e50cc0666f1745e1897c0a56

8.10.2. Trim/Discard It is good practice to run fstrim (discard)
regularly on VMs and containers. This releases data blocks that the
filesystem isn't using anymore. It reduces data usage and resource load.
Most modern operating systems issue such discard commands to their disks
regularly. You only need to ensure that the Virtual Machines enable the
disk discard option.

I would guess that if you use sparse file backed storage to a vm you'd
want the vm to run fstrim too but this isn't a setup I've ever used so
perhaps it's nonsense.

Thread

Disk corruption and performance issue. Tim Woodall <debianuser@woodall.me.uk> - 2024-01-20 17:30 +0100
  Re: Disk corruption and performance issue. David Christensen <dpchrist@holgerdanske.com> - 2024-01-20 22:20 +0100
    Re: Disk corruption and performance issue. Tim Woodall <debianuser@woodall.me.uk> - 2024-01-21 11:50 +0100
      Re: Disk corruption and performance issue. gene heskett <gheskett@shentel.net> - 2024-01-21 19:00 +0100
      Re: Disk corruption and performance issue. David Christensen <dpchrist@holgerdanske.com> - 2024-01-22 00:10 +0100
      SOLVED Re: Disk corruption and performance issue. Tim Woodall <debianuser@woodall.me.uk> - 2024-02-26 19:30 +0100
        Re: SOLVED Re: Disk corruption and performance issue. Gremlin <scott-andrews@columbus.rr.com> - 2024-02-26 20:10 +0100
          Re: SOLVED Re: Disk corruption and performance issue. Tim Woodall <debianuser@woodall.me.uk> - 2024-02-26 20:50 +0100
            Re: SOLVED Re: Disk corruption and performance issue. Gremlin <scott-andrews@columbus.rr.com> - 2024-02-26 22:00 +0100
              Re: SOLVED Re: Disk corruption and performance issue. Tim Woodall <debianuser@woodall.me.uk> - 2024-02-26 22:40 +0100
                Re: SOLVED Re: Disk corruption and performance issue. Gremlin <scott-andrews@columbus.rr.com> - 2024-02-26 22:50 +0100
              Re: SOLVED Re: Disk corruption and performance issue. Stefan Monnier <monnier@iro.umontreal.ca> - 2024-02-26 22:50 +0100
        Re: SOLVED Re: Disk corruption and performance issue. Andy Smith <andy@strugglers.net> - 2024-02-27 00:50 +0100
          Re: SOLVED Re: Disk corruption and performance issue. Tim Woodall <debianuser@woodall.me.uk> - 2024-02-27 05:40 +0100

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