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Re: More RAID weirdness: external RAID over network

From Reco <recoverym4n@enotuniq.net>
Newsgroups linux.debian.user
Subject Re: More RAID weirdness: external RAID over network
Date 2023-03-17 16:20 +0100
Message-ID <Gak25-d8fW-3@gated-at.bofh.it> (permalink)
References <Gafc5-d5co-1@gated-at.bofh.it> <GafYt-d5tV-5@gated-at.bofh.it> <GahQE-d6Es-3@gated-at.bofh.it> <Gajpn-d7JR-3@gated-at.bofh.it> <Gajz3-d7NH-11@gated-at.bofh.it>
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On Fri, Mar 17, 2023 at 03:46:54PM +0100, Nicolas George wrote:
> Reco (12023-03-17):
> > Yes, it will destroy the contents of the device, so backup
> 
> No. If I accepted to have to rely on an extra copy of the data, I would
> not be trying to do something complicated like that.

Well, theoretically you can use Btrfs instead.
I recall that there was some way to convert ext4 to btrfs without losing
anything.
Practically, friends do not let friends to use btrfs ;)
Unless you're using SLES (*not* OpenSUSE), and do backups frequently,
then it's kind of OK.

In conclusion, implementing mdadm + iSCSI + ext4 would be probably the
best way to achieve whatever you want to do.


PS There's that old saying, "RAID is not a substitute for a backup".
What you're trying to do sounds suspiciously similar to an old "RAID
split-mirror" backup technique. Just saying.

Reco

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Thread

More RAID weirdness: external RAID over network Nicolas George <george@nsup.org> - 2023-03-17 11:10 +0100
  Re: More RAID weirdness: external RAID over network Reco <recoverym4n@enotuniq.net> - 2023-03-17 12:00 +0100
    Re: More RAID weirdness: external RAID over network Nicolas George <george@nsup.org> - 2023-03-17 14:00 +0100
      Re: More RAID weirdness: external RAID over network Reco <recoverym4n@enotuniq.net> - 2023-03-17 15:40 +0100
        Re: More RAID weirdness: external RAID over network Nicolas George <george@nsup.org> - 2023-03-17 15:50 +0100
          Re: More RAID weirdness: external RAID over network Reco <recoverym4n@enotuniq.net> - 2023-03-17 16:20 +0100
            Re: More RAID weirdness: external RAID over network Nicolas George <george@nsup.org> - 2023-03-17 16:30 +0100
              Re: More RAID weirdness: external RAID over network Dan Ritter <dsr@randomstring.org> - 2023-03-17 17:10 +0100
                Re: More RAID weirdness: external RAID over network Nicolas George <george@nsup.org> - 2023-03-17 17:10 +0100
                Re: More RAID weirdness: external RAID over network Tim Woodall <debianuser@woodall.me.uk> - 2023-03-17 18:00 +0100
                Re: More RAID weirdness: external RAID over network Greg Wooledge <greg@wooledge.org> - 2023-03-17 20:10 +0100
                Re: More RAID weirdness: external RAID over network Nicolas George <george@nsup.org> - 2023-03-17 21:50 +0100
                Re: More RAID weirdness: external RAID over network Nicolas George <george@nsup.org> - 2023-03-17 22:00 +0100
                Re: More RAID weirdness: external RAID over network Tim Woodall <debianuser@woodall.me.uk> - 2023-03-17 23:50 +0100
                Re: More RAID weirdness: external RAID over network Nicolas George <george@nsup.org> - 2023-03-20 11:50 +0100
            RAID1 + iSCSI as backup (was Re: More RAID weirdness: external RAID  over network) Gregory Seidman <gsslist+debian@anthropohedron.net> - 2023-03-17 21:00 +0100
              Re: RAID1 + iSCSI as backup (was Re: More RAID weirdness: external  RAID over network) Dan Ritter <dsr@randomstring.org> - 2023-03-17 22:10 +0100
              Re: RAID1 + iSCSI as backup (was Re: More RAID weirdness: external  RAID over network) David Christensen <dpchrist@holgerdanske.com> - 2023-03-18 02:10 +0100
                Re: RAID1 + iSCSI as backup (was Re: More RAID weirdness: external  RAID over network) Gregory Seidman <gsslist+debian@anthropohedron.net> - 2023-03-18 03:30 +0100
                Re: RAID1 + iSCSI as backup (was Re: More RAID weirdness: external  RAID over network) David Christensen <dpchrist@holgerdanske.com> - 2023-03-18 09:10 +0100
                Re: RAID1 + iSCSI as backup (was Re: More RAID weirdness: external  RAID over network) Dan Ritter <dsr@randomstring.org> - 2023-03-19 02:40 +0100

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