Date: Tue, 5 Apr 2011 21:44:41 +0200 From: Claus Guttesen <kometen@gmail.com> To: Andrey Zonov <andrey@zonov.org> Cc: freebsd-stable@freebsd.org Subject: Re: ZFS with compression causes deadlock Message-ID: <BANLkTi=qpmhNOt7%2BmbP5WMfZRg806AT2yQ@mail.gmail.com> In-Reply-To: <4D9B63D4.8010604@zonov.org> References: <4D9B63D4.8010604@zonov.org>
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> Today I had deadlock on several machines. Almost all processes stucked in > [tx->tx_cpu[c].tc_lock]. Machines were helped only `reboot -n'. > I've created new gzip-ed filesystem a few days ago. I didn't have any > problems with ZFS before. > > System was built from svn://svn.freebsd.org/base/stable/8@215508. > Machines have 24Gb RAM, 4 SATA 500Gb disks in raidz. > > loader.conf: > ahci_load=3D"YES" > zfs_load=3D"YES" > vfs.zfs.arc_max=3D"2G" > vfs.zfs.cache_flush_disable=3D"1" # default: 0 > vfs.zfs.prefetch_disable=3D"1" =A0 =A0# default: 0 > vfs.zfs.txg.timeout=3D"5" =A0 =A0 =A0 =A0 # default: 30 > vfs.zfs.zio.use_uma=3D"0" =A0 =A0 =A0 =A0 # default: 0 (earlier was 1) Have you tried to remove vfs.zfs.* in rc.conf? Newer versions of zfs may not need tuning except in specific cases now. I've had problems using compression in (much) earlier zfs-versions some years ago and avoided this feature. A few days ago I've setup FreeBSD current with zfs. ver. 28 and enabled compression and have performed a zfs receive with approx. 660 GB of data that boils down to 350 GB without problems. --=20 regards Claus When lenity and cruelty play for a kingdom, the gentler gamester is the soonest winner. Shakespeare twitter.com/kometen
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