From: Lennart Poettering <lennart@poettering.net>
To: Harald Hoyer <harald@redhat.com>
Cc: linux-btrfs@vger.kernel.org, Kay Sievers <kay@vrfy.org>
Subject: Re: Extend BTRFS_IOC_DEVICES_READY for degraded RAID
Date: Mon, 5 Jan 2015 12:31:47 +0100 [thread overview]
Message-ID: <20150105113147.GA18350@gardel-login> (raw)
In-Reply-To: <54AA5D86.1000503@redhat.com>
On Mon, 05.01.15 10:46, Harald Hoyer (harald@redhat.com) wrote:
> We have BTRFS_IOC_DEVICES_READY to report, if all devices are present, so that
> a udev rule can report ID_BTRFS_READY and SYSTEMD_READY.
>
> I think we need a third state here for a degraded RAID, which can be mounted,
> but should only after a certain timeout/kernel command line params.
>
> We also have to rethink how to handle the udev DB update for the change of the
> state. incomplete -> degraded -> complete
I am not convinced that automatically booting degraded arrays would be
a good idea. Instead, requiring one manual step before booting a
degraded array sounds OK to me.
Lennart
--
Lennart Poettering, Red Hat
next prev parent reply other threads:[~2015-01-05 11:37 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-05 9:46 Extend BTRFS_IOC_DEVICES_READY for degraded RAID Harald Hoyer
2015-01-05 11:31 ` Lennart Poettering [this message]
2015-01-05 12:08 ` Austin S Hemmelgarn
2015-01-05 16:36 ` Goffredo Baroncelli
2015-01-05 17:02 ` Austin S Hemmelgarn
2015-01-05 17:57 ` Goffredo Baroncelli
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