Date: Mon, 19 Sep 2011 03:46:41 +0700 (NOVST) From: Eugene Grosbein <eugen@grosbein.pp.ru> To: FreeBSD-gnats-submit@FreeBSD.org Cc: mav@FreeBSD.org Subject: kern/160811: Cannot change gmirror provider priority in RELENG_7 (r196879) Message-ID: <201109182046.p8IKkfGx004609@grosbein.pp.ru> Resent-Message-ID: <201109182130.p8ILUAxY069988@freefall.freebsd.org>
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>Number: 160811 >Category: kern >Synopsis: Cannot change gmirror provider priority in RELENG_7 (r196879) >Confidential: no >Severity: serious >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: change-request >Submitter-Id: current-users >Arrival-Date: Sun Sep 18 21:30:10 UTC 2011 >Closed-Date: >Last-Modified: >Originator: Eugene Grosbein >Release: FreeBSD 7 >Organization: RDTC JSC >Environment: System: FreeBSD 7.2-RELEASE >Description: When first of gmirror's drives in some old server started dying (read errors, SMART offline read test fails) I was forced to prepare new hardware to replace this 2-drive PATA system. But, it appears this is not possible to make final dumps of its file systems as dump(8) hangs the whole box while reading failing drive. I was going to switch gmirror to 'prefer' balance algorithm to disable reads from first drive. I could not achieve this as /sbin/gmirror in RELENG_7 does not allow to change provider priorities (both drives priorities are zeroes). >How-To-Repeat: gmirror(8) manual page shows no support for "gmirror -p" as in 8.x and 9.x branches due to missed SVN r196879 merge. >Fix: Please perform merge of r196879 to RELENG_7. I've did it manually, it applies cleanly and works just fine, I was able to make second drive more preferable with this change. Eugene Grosbein >Release-Note: >Audit-Trail: >Unformatted:
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