Date: Thu, 4 Apr 2013 14:20:27 GMT From: Scott Kitchin <scott@kitchin.com> To: freebsd-gnats-submit@FreeBSD.org Subject: amd64/177633: FreeBSD 9.1 and ZFS deadlocked at shutdown/reboot Message-ID: <201304041420.r34EKRTQ015738@red.freebsd.org> Resent-Message-ID: <201304041430.r34EU0m4072660@freefall.freebsd.org>
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>Number: 177633 >Category: amd64 >Synopsis: FreeBSD 9.1 and ZFS deadlocked at shutdown/reboot >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-amd64 >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Apr 04 14:30:00 UTC 2013 >Closed-Date: >Last-Modified: >Originator: Scott Kitchin >Release: 9.1-RELENG r248699 >Organization: Novysoft >Environment: FreeBSD web 9.1-RELEASE-p1 FreeBSD 9.1-RELEASE-p1 #0 r248699: Mon Mar 25 18:31:53 MSK 2013 root@:/usr/obj/usr/src/sys/NOVYSOFT amd64 >Description: I tried FreeBSD 9.1 (RELEASE/RELENG/STABLE) with ZFS mirrored (raid1) pool and iRedMail (http://www.iredmail.org) and it hangs when I issue a shutdown command. The only last message displayed "All buffers synched" and it hangs indefinitely until I hit the reset/power button. FreeBSD 9.1 with ZFS (raid1) pool shutdown hang/deadlock. FreeBSD 9.1 without ZFS shutdown successful. FreeBSD 9.0 with ZFS shutdown successful. FreeBSD 9.0 without ZFS shutdown successful. This only happens after I install iRedMail. If I uninstall or delete iRedMail and it shutdowns normal. If I reinstall iRedMail and it hangs. iRedMail's mail daemons must be causing some kind of deadlock and preventing FreeBSD 9.1 from normal shutdown. I think this is serious problem if the server is at a remote location without physical access to power button. I was able to reproduce this problem in VirtualBox with two virtual drives for ZFS pool mirroring and two different computers. The server can be shutdown using this command 'shutdown -n -o -r now' but it's risky. >How-To-Repeat: 1) Install FreeBSD 9.1 with ZFS mirrored (raid1) pools 2) Install Bash from ports 3) Install iRedMail from http://www.iredmail.org 4) Shutdown to start all services 5) Shutdown again and it hangs I use ZFS creation tool from http://iceblood.googlecode.com/svn/FreeBSD_ZFS/freebsd_zfs_inst.sh >Fix: N/A >Release-Note: >Audit-Trail: >Unformatted:home | help
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