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Date:      Tue, 31 Jul 2012 08:31:07 +0200
From:      =?iso-8859-1?Q?Karli_Sj=F6berg?= <Karli.Sjoberg@slu.se>
To:        "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org>
Subject:   Hang when importing pool
Message-ID:  <D13A3EA7-B229-4B78-915E-A3CC3162DB8A@slu.se>

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Hi,

I=B4m really struggling with this. I have had a pool with imported filesyst=
ems from a Solaris system that had dedup activated. Then, when the time cam=
e to erase them, it just stalled. When rebooting, it stalled again at mount=
ing filesystems, and since then, I=B4ve installed two USB drives to act as =
root pool with FreeBSD-9.0-RELEASE so that I could import the original pool=
 in recovery, but it always stalls after a couple of hours. Looking at top,=
 I could see that the 16GB RAM was maxed out, so I have heavily tuned down =
kmem, arc, etc:

vm.kmem_size_max=3D"512M"
vm.kmem_size=3D"384M"
vfs.zfs.arc_max=3D"256M"

And then I tried importing again, but with the same result; RAM reaches 16G=
 Wired, 0B Free and some swap allocated as well, and then it stalls. So I t=
ried updating, so currently it=B4s at FreeBSD 9.1-BETA1 #0: Fri Jul 13 22:3=
6:05 CEST 2012, but still no go, it still stalls when I try importing, even=
 like:

# zpool import -f -F -m pool1

In the link is a screenshot of CTRL+T after it stalled the last time.
http://i46.tinypic.com/jhdgrq.png

There is about 4TB in there that I really need. Please help, I=B4m out of i=
deas, and stupid enough not to have gotten it backed up yet.


Best Regards
---------------------------------------------------------------------------=
----
Karli Sj=F6berg
Swedish University of Agricultural Sciences
Box 7079 (Visiting Address Kron=E5sv=E4gen 8)
S-750 07 Uppsala, Sweden
Phone:  +46-(0)18-67 15 66
karli.sjoberg@slu.se<mailto:karli.sjoberg@adm.slu.se>




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