From: Chris Samuel <chris@csamuel.org>
To: linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: btrfs raid1 and btrfs raid10 arrays NOT REDUNDANT
Date: Tue, 07 Jan 2014 16:43:40 +1100 [thread overview]
Message-ID: <52CB940C.9010203@csamuel.org> (raw)
In-Reply-To: <52CB031C.7060403@jrs-s.net>
On 07/01/14 06:25, Jim Salter wrote:
> FWIW, Ubuntu (and I presume Debian) will work just fine with a single /
> on btrfs, single or multi disk.
>
> I currently have two machines booting to a btrfs-raid10 / with no
> separate /boot, one booting to a btrfs single disk / with no /boot, and
> one booting to a btrfs-raid10 / with an ext4-on-mdraid1 /boot.
Actually I've run into a problem with grub where a fresh install cannot
boot from a btrfs /boot if your first partition is not 1MB aligned
(sector 2048) then there is then not enough space for it to store its
btrfs code. :-(
https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1266195
I don't want to move my first partition as it's a Dell special (type
'de') and I'm not sure what the impact would be, so I just created an
ext4 /boot and the install then worked.
Regarding RAID, yes I realise it's easy to do post-fact, in fact on the
same test system I added an external USB2 drive to the root filesystem
and rebalanced as RAID-1, worked nicely.
I'm planning on adding dual SSDs as my OS disks to my desktop and this
experiment was to learn whether the Kubuntu installer handled it yet and
if not to do a quick practice of setting it up by hand. :-)
All the best,
Chris
--
Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC
next prev parent reply other threads:[~2014-01-07 5:43 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-03 22:28 btrfs raid1 and btrfs raid10 arrays NOT REDUNDANT Jim Salter
2014-01-03 22:42 ` Emil Karlson
2014-01-03 22:43 ` Joshua Schüler
2014-01-03 22:56 ` Jim Salter
2014-01-03 23:04 ` Hugo Mills
2014-01-03 23:04 ` Joshua Schüler
2014-01-03 23:13 ` Jim Salter
2014-01-03 23:18 ` Hugo Mills
2014-01-03 23:25 ` Jim Salter
2014-01-03 23:32 ` Chris Murphy
2014-01-03 23:22 ` Chris Murphy
2014-01-04 6:10 ` Duncan
2014-01-04 11:20 ` Chris Samuel
2014-01-04 13:03 ` Duncan
2014-01-04 14:51 ` Chris Mason
2014-01-04 15:23 ` Goffredo Baroncelli
2014-01-04 20:08 ` Duncan
2014-01-04 21:22 ` Jim Salter
2014-01-05 11:01 ` Duncan
2014-01-03 23:19 ` Chris Murphy
[not found] ` <CAOjFWZ7zC3=4oH6=SBZA+PhZMrSK1KjxoRN6L2vqd=GTBKKTQA@mail.gmail.com>
2014-01-03 23:42 ` Jim Salter
2014-01-03 23:45 ` Jim Salter
2014-01-04 0:27 ` Chris Murphy
2014-01-04 2:59 ` Jim Salter
2014-01-04 5:57 ` Dave
2014-01-04 11:28 ` Chris Samuel
2014-01-04 14:56 ` Chris Mason
2014-01-05 9:20 ` Chris Samuel
2014-01-05 11:16 ` Duncan
2014-01-04 19:18 ` Chris Murphy
2014-01-04 21:16 ` Jim Salter
2014-01-05 20:25 ` Chris Murphy
2014-01-06 10:20 ` Chris Samuel
2014-01-06 18:30 ` Chris Murphy
2014-01-06 19:25 ` Jim Salter
2014-01-06 22:05 ` Chris Murphy
2014-01-06 22:24 ` Jim Salter
2014-01-07 5:43 ` Chris Samuel [this message]
2014-01-06 19:31 ` correct way to rollback a root filesystem? Jim Salter
2014-01-07 11:55 ` Sander
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