From: Fredrik Salomonsson <plattfot@gmail.com>
To: Giovanni Biscuolo <g@xelera.eu>, help-guix@gnu.org
Subject: Re: btrfs raid configuration vs mdraid
Date: Tue, 21 May 2019 09:35:36 -0700 [thread overview]
Message-ID: <87o93vlq93.fsf@gmail.com> (raw)
In-Reply-To: <871s0s9ptj.fsf@roquette.mug.biscuolo.net>
Hi Giovanni,
Giovanni Biscuolo <g@xelera.eu> writes:
[...]
>>> Assuming I'm going to format the root filesystem as:
>>>
>>> mkfs.btrfs -m raid1 -d raid1 /dev/sda3 /dev/sdb3
>>>
>>> how should I configure (file-system...)? this way:
>>>
>>> (file-system
>>> (mount-point "/")
>>> (type "btrfs")
>>> (device (uuid "4dab5feb-d176-45de-b287-9b0a6e4c01cb")))
>>>
>>> with UUID taken from "lsblk -f"?
>>
>> That should work.
>
> I confirm it worked, easily! :-)
Good to know :).
[...]
>> One thing you should note is that guix might generate incorrect
>> paths for grub if you are using subvolumes. At least guix < 1.0 does
>> that for me, haven't tested 1.0+ yet. But I have been using a shell
>> script that works around that issue.
>
> I did not use root on a subvolume for my installation, but I'll try to
> reproduce it in a test install: can you please file a bug report for
> this, IMHO this should be fixed
Looks like there is already a bug report on this:
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=33517
And I just tested to reconfigure my system with guix v1.0.1 and the
issue is still there.
>>> From you experience is RAID on brtfs as solid as the one on mdadm?
>>
>> I have very little experience with mdadm, so can only speak of my
>> experience with btrfs and RAID-1. Which I have been using for 3+ years.
>> For me it has been solid. Only issue I have encountered was when my
>> fileserver lost power a few times leaving the filesystem corrupt. A
>> "btrfs check --repair" fixed that issue.
>
> Thanks for sharing! You give me courage to adopt btrfs more extensively
> :-)
Glad I could help out.
--
s/Fred[re]+i[ck]+/Fredrik/g
prev parent reply other threads:[~2019-05-21 16:35 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-16 6:00 btrfs raid configuration vs mdraid Giovanni Biscuolo
2019-05-20 19:59 ` Fredrik Salomonsson
2019-05-21 8:25 ` Giovanni Biscuolo
2019-05-21 16:35 ` Fredrik Salomonsson [this message]
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