[zfs-discuss] ZFS iSCSI volume problems

John Horton
Wed, 06 Jan 2010 16:07:31 -0000

Well that wasn''t it, but it got me doing better Google searches...I
have a
Realtek rge0 interface...
http://opensolaris.org/jive/thread.jspa?messageID=439296 . I wasn''t
considering the net interface because the problem didn''t manifest for
me
until I turned zfs compression on.



http://sigtar.com/2009/02/12/opensolaris-rtl81118168b-issues/#comment-88 is
the driver that seems to have fixed it for most people.



Thanks



John



From: Tiernan OToole [mailto:lsmartman at gmail.com]
Sent: Wednesday, January 06, 2010 9:32 AM
To: John
Cc: zfs-discuss at opensolaris.org
Subject: Re: [zfs-discuss] ZFS iSCSI volume problems



stupid question, but it wouldent by any chance be an Intel Network adapter?
had a weird problem on Windows which had the same issue... new net driver
solved the problem... wonder if the Intel drive has the same problem on
Solaris...



--Tiernan

On Wed, Jan 6, 2010 at 2:28 PM, John <hortnon at gmail.com> wrote:

I''m using snv_111 to host iSCSI for my backups. This went fine until I
enabled compression on the volume. About halfway through a backup (~250gb
done), Solaris loses its network connection with no errors logged
(/var/adm/messages and /var/log/* with no entries for an hour preceding).
After reformatting the iSCSI volume (from Windows) and starting from scratch
to use compression, it takes about 10gb to trigger this. I''ve tried
several
switches and routers, and the same always happens - the Solaris system drops
off the network for about 15 minutes.

I tried to do a ''zfs destroy'' on the volume, and it hung,
along with all
other zfs commands for about 3 hours. The volume only ever contained 550gb
total of data.

This is a 700gb volume on two mirrored 1tb drives.

Looking back through the OpenSolaris-help mailing list, I see the zfs
destroy hanging problem, but it looked like people believed that to be more
related to dedup.

Anyone have any ideas on what I could be doing better to avoid these
behaviors?
--
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--
Tiernan O''Toole
blog.lotas-smartman.net
www.tiernanotoolephotography.com
www.the-hairy-one.com

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