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List:       gentoo-user
Subject:    Re: [gentoo-user] LVM and moving things around
From:       Rich Freeman <rich0 () gentoo ! org>
Date:       2022-03-28 14:53:42
Message-ID: CAGfcS_kThedJo-RfDNKVTbhZsqgmH6rgLpTk_4_i3DEtogCc=g () mail ! gmail ! com
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On Mon, Mar 28, 2022 at 9:32 AM Dale <rdalek1967@gmail.com> wrote:
>
> Time for plan B.  I expect a drive purchase soon.  $$$  Heck, it would
> be faster to do backups, redo the whole thing and copy it all back.  I
> could copy it in chunks.  First chunk gets me running and then copy
> remaining stuff.  Hmmmmm.

If you start having large volumes of data it probably makes sense to
split that off and handle it differently.  I am storing my large stuff
on lizardfs for this reason (though if starting today I'd take another
look at moosefs or ceph).  When you don't care so much about IOPS, or
efficiency of small files, there are a lot of constraints you can
avoid with ext4.  Distributed filesystems also have scaling benefits
because you don't have to try to cram your 10 hard drives into a
single host.

Ext4 can be grown online, but it can't be shrunk online.  When you
start getting to large filesystems you need to consider
backup/restoration time and if you want availability you really want
solutions that feature RAID and which can do all the operations you
need online.  Simply having a backup might not be satisfactory if your
backup requires dozens of hours to restore, except as a last resort.

-- 
Rich

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