Date: Fri, 19 Sep 2008 06:26:16 GMT From: Alex <titov-av@ptt.spb.ru> To: freebsd-gnats-submit@FreeBSD.org Subject: amd64/127492: System hang on ZFS input-output Message-ID: <200809190626.m8J6QGfp020602@www.freebsd.org> Resent-Message-ID: <200809190630.m8J6U1Gp019776@freefall.freebsd.org>
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>Number: 127492 >Category: amd64 >Synopsis: System hang on ZFS input-output >Confidential: no >Severity: critical >Priority: high >Responsible: freebsd-amd64 >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Sep 19 06:30:00 UTC 2008 >Closed-Date: >Last-Modified: >Originator: Alex >Release: 7.1 >Organization: JSC "P.T.T." >Environment: FreeBSD x6.line1.ru 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #1: Mon Sep 15 11:27:50 MSD 2008 root@x6.line1.ru:/usr/obj/usr/src/sys/KMIST amd64 >Description: We use RAID controller Smart Array P400 (driver ciss)in our system. Five hardware stripe arrays was combined into raidz (zfs). #df -h coolpool 6.7T 1.7T 5.0T 25% /www /www - used by proftpd and httpd daemons System is working properly during some period of time(day-week), but processes which are accessing to the ZFS volume turn into "D uninterruptible wait" state and hang on. www 86576 0.0 0.5 121560 19556 ?? D 7:37AM 0:00.00 /usr/local/sbin/httpd -DNOHTTPACCEPT www 86577 0.0 0.5 121560 19556 ?? D 7:37AM 0:00.00 /usr/local/sbin/httpd -DNOHTTPACCEPT www 86578 0.0 0.5 121560 19556 ?? D 7:38AM 0:00.00 /usr/local/sbin/httpd -DNOHTTPACCEPT Any requests to the ZFS volume cause the process hang. "Reboot"-command is executed normally up to the moment when the system produce "syncing disks" and hang also. P.S. 7.0 - release is working in the same way. >How-To-Repeat: We don't know. Possible high disc load. >Fix: Hardware reset. O_o >Release-Note: >Audit-Trail: >Unformatted:
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