Date: Wed, 14 May 2008 11:50:25 +0300 From: Kostik Belousov <kostikbel@gmail.com> To: Ben Stuyts <ben@altus-escon.com> Cc: stable@freebsd.org, d@delphij.net Subject: Re: Panic after hung rsync, probably zfs related Message-ID: <20080514085025.GL18958@deviant.kiev.zoral.com.ua> In-Reply-To: <11D2E346-752B-4F61-979E-1D64FB34ED34@altus-escon.com> References: <7A0780B6-AD8E-440B-BFDB-EC2C4ACA1A70@altus-escon.com> <4829F1B8.1000707@delphij.net> <11D2E346-752B-4F61-979E-1D64FB34ED34@altus-escon.com>
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[-- Attachment #1 --] On Wed, May 14, 2008 at 10:39:36AM +0200, Ben Stuyts wrote: > > On 13 mei 2008, at 21:53, Xin LI wrote: > > >| While doing an rsync from a zfs filesystem to an external usb hd > >(also > >| zfs), the rsync processes hung in zfs state. I could not kill these > >| processes, although the rest of the server seemingly continued to > >run > >| fine. The reboot command did not work. Next I tried a shutdown now > >| command. This caused a panic: > > > >Sound like you somehow run out of memory, there is an known issue with > >ZFS which causes livelock when there is memory pressure. Which rsync > >version are you using? With rsync 3.x the memory usage would drop > >drastically which would help to prevent this from happening. > > I'm running rsync 3.0.0. Two weeks ago I already increased the memory > in this machine from 4 to 8 GB, but I did not change any loader.conf > variables. > > BTW, The wired memory goes all over the place in this machine: even > when it's mostly idle it varies between 300 MB and 3.5 GB. That's why > I added 4 more GB. 3.5Gb wired ? Do you run amd64 ? Does wired memory drops lower after you change the load ? [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (FreeBSD) iEYEARECAAYFAkgqp9AACgkQC3+MBN1Mb4jlrgCffex2lnSLoSUMWgZdvRoF2vqK o18AoMiofyVjN8ZXGu1c+UeoQsL0ZHXE =hbGB -----END PGP SIGNATURE-----
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