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Date: Thu, 5 Aug 2010 16:40:12 GMT
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To: freebsd-fs@FreeBSD.org
From: Andriy Gapon <avg@icyb.net.ua>
Cc: 
Subject: Re: kern/148655: [zfs] Booting from a degraded raidz no longer works
 in 8-STABLE [regression]
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The following reply was made to PR kern/148655; it has been noted by GNATS.

From: Andriy Gapon <avg@icyb.net.ua>
To: Martin Matuska <mm@FreeBSD.org>
Cc: bug-followup@FreeBSD.org, am@raisa.eu.org,
        Pawel Jakub Dawidek <pjd@FreeBSD.org>, Xin LI <delphij@FreeBSD.org>
Subject: Re: kern/148655: [zfs] Booting from a degraded raidz no longer works
 in 8-STABLE [regression]
Date: Thu, 05 Aug 2010 19:38:17 +0300

 on 05/08/2010 19:23 Martin Matuska said the following:
 > A proposed patch is attached.
 > 
 > The function vdev_read_phys() (sys/boot/zfs/zfsimpl.c, #325) does call
 > vdev->v_phys_read() without checking if that function is registered.
 > 
 > This check should be done in vdev_read_phys before doing anything else.
 > 
 > vdev_create initializes vdev->v_phys_read as 0 and unavailable vdevs
 > keep this value.
 
 Looks very good.
 Thanks!
 
 -- 
 Andriy Gapon