Date: Thu, 17 Mar 2005 20:32:00 GMT From: Andrew Korovin <admin@freeside.pp.ru> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/78956: Only one write operation attempted on RAID0 (HPT370) before giving up Message-ID: <200503172032.j2HKW0Si041352@www.freebsd.org> Resent-Message-ID: <200503172040.j2HKe2TZ099023@freefall.freebsd.org>
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>Number: 78956
>Category: kern
>Synopsis: Only one write operation attempted on RAID0 (HPT370) before giving up
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Mar 17 20:40:02 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator: Andrew Korovin
>Release: FreeBSD 5.2.1-p13
>Organization:
FreeSide`s Software, Inc.
>Environment:
FreeBSD freeside.pp.ru 5.3-RELEASE-p5 FreeBSD 5.3-RELEASE-p5 #0: Fri Feb 4 04:28:14 MSK 2005 root@freeside.pp.ru:/usr/obj/usr/src/sys/FreeSide i386
>Description:
When FreeBSD kernel writes to the RAID array (in my case - HPT370, RAID0, /dev/ar0) looks like it tries only one write operation and, in case of failure, it complains about error (ar0 - broken array). After that it's nearly impossible to recover my RAID array. It would be much better if kernel first retry a write operation at least three or more times and only then give up. Looks like it was so in FreeBSD 5.2.1 but somewhy it has changed in FreeBSD 5.3
>How-To-Repeat:
Sample: ataidle -S 1 2 0 (disk in raid0) or more.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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