Date: Fri, 18 Sep 2009 00:59:42 +0200 From: Patrick Lamaiziere <patfbsd@davenulle.org> To: freebsd-current@freebsd.org Subject: Re: [ZFS] panic vm_fault : fault on no fault entry (when superpages are enabled) Message-ID: <20090918005942.0a4d5ca8@baby-jane.lamaiziere.net> In-Reply-To: <20090917132127.2a0ee973@baby-jane.lamaiziere.net> References: <20090917132127.2a0ee973@baby-jane.lamaiziere.net>
next in thread | previous in thread | raw e-mail | index | archive | help
Le Thu, 17 Sep 2009 13:21:27 +0200, Patrick Lamaiziere <patfbsd@davenulle.org> a écrit : Hello, > [8.0 BETA-4/i386] > > I've got this panic when copying /usr on a new pool. > It's 100% reproductible here with > tar cf - -C /usr . | tar xpvf - -C /pool > > The panic occurs always with free() in the ZFS code. ... > /boot/loader.conf > # ZFS > vm.kmem_size="512M" > vm.kmem_size_max="512M" > vfs.zfs.arc_max="40M" > vfs.zfs.vdev.cache.size="5M" > > and options KVA_PAGES=512 in my kernel I think I've found the culprit: superpages. With vm.pmap.pg_ps_enabled="1", my box will panic in the next five minutes when doing a simple tar on ZFS. Looks good without the superpages. Is it a known problem? Thanks, regards.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20090918005942.0a4d5ca8>