Date: Wed, 18 Jul 2012 16:40:02 GMT From: Shane Ambler <FreeBSD@ShaneWare.Biz> To: freebsd-fs@FreeBSD.org Subject: Re: kern/161968: [zfs] [hang] renaming snapshot with -r including a zvol snapshot causes total ZFS freeze/lockup Message-ID: <201207181640.q6IGe2we068936@freefall.freebsd.org>
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The following reply was made to PR kern/161968; it has been noted by GNATS. From: Shane Ambler <FreeBSD@ShaneWare.Biz> To: bug-followup@FreeBSD.org, peter.maloney@brockmann-consult.de Cc: Subject: Re: kern/161968: [zfs] [hang] renaming snapshot with -r including a zvol snapshot causes total ZFS freeze/lockup Date: Thu, 19 Jul 2012 01:59:46 +0930 I am running 9.0-RELEASE-p1 amd64 clang built world and get a hang with zfs rename -r. I find anything already running mostly keeps running (top started before the rename will hang) but any (uncached?) disk access will cause running progs to hang as well. No new progs can start not even a console login. I need to hard reset. Hardware is an ASUS P8H61-M LE/USB3 with corei5 and 8GB RAM using a WD10EARS-00Y5B1 (WD green 1TB SATA2). Partitioned with 1 64k boot partition and 1 zfs partition. Single disk zpool. The volume I have is allocated to swap. The commands I used for the volume are - zfs create -V 16G zrp/swap0 zfs set org.freebsd:swap=on zrp/swap0 zfs set copies=1 zrp/swap0 From a clean pool with no snapshots - zfs snapshot -r zrp@daily.01 -- works zfs rename -r zrp@daily.01 zrp@daily.02 -- hangs Alternatively - zfs snapshot -r zrp@daily.01 -- works zfs rename -r zrp/swap0@daily.01 zrp/swap0@daily.02 -- works zfs rename -r zrp@daily.01 zrp@daily.02 -- works zfs rename -r zrp@daily.02 zrp@daily.03 -- hangs - now renames vol
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