Date: Sun, 28 Dec 2008 16:14:26 +0200 From: Danny Braniss <danny@cs.huji.ac.il> To: "Erik Scholtz, ArgonSoft GmbH" <e.scholtz@argonsoft.de> Cc: freebsd-scsi@freebsd.org Subject: Re: Problem with disklabel and filesystem over iSCSI Message-ID: <E1LGwPS-000B6h-Dx@kabab.cs.huji.ac.il> In-Reply-To: <4957824C.1000601@argonsoft.de> References: <4956B01B.3000509@argonsoft.de> <E1LGrjK-0007Zn-5K@kabab.cs.huji.ac.il> <49575045.4090601@argonsoft.de> <E1LGti5-0009Dv-Uo@kabab.cs.huji.ac.il> <49577118.1080700@argonsoft.de> <E1LGvW7-000ALB-Sl@kabab.cs.huji.ac.il> <4957824C.1000601@argonsoft.de>
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> Danny Braniss wrote: > >> ok, i started the system in single-user-mode and brought up the iSCSI > >> connection. I tried to install the ufs first, after each step I synced. > >> No change - problem remains the same (newfs is failing). > >> > >> Then I installed the ZFS again, also synced after each step, then > >> unmounted the iSCSI device, synced again (always at least three times). > >> Then rebooted the system (going to single-user-mode again) and the ZFS > >> is corrupted again with the same message. > >> > > in the case of zfs, you have to > > /etc/rc.d/zfs stop > > > > I used the "zfs umount tank" command. I now tried it with "/etc/rc.d/zfs > stop" (both cases: before and after umounting the volume via "zfs > umount") and synced again. Still the effect remains the same: After > reboot the filesystem is corrupted and unreadable. > > >> I don't think the buffers are the problem. > >> > > are you sure that the iscsi target is only used by the freebsd host? > > 100% for sure. The SAN is (at the moment) connected via Cross-Cable > directly to the FreeBSD-Box, so has only a dedicated connection. Before > that it was connected over a seperate Cisco 520G Switch, only used by > the SAN and the FreeBSD Box. > The networkcard is a INTEL 1GBit. Also tried it with a nVidia nForce Pro > 3400 (also 1GBit). I also played with the MTU sizes: at the moment it is > default (1500) - but other sizes (jumbo size 9000) also do not change > anything (I made sure, both sides (SAN and FreeBSD) uses the same size). Since you seem to be in a cooperative mood :-), can you try checking with a smaller volume? say 200GB? either UFS or ZFS? the biggest I have access to is 921595 Meg and it does not show your problems. also, what is the Media Sector size? fdisk da0 should show it. cheers, dannyhome | help
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