[Stgt-devel] Errors in fsck with iSER

[FUJITA Tomonori]

On Mon, 17 Dec 2007 17:53:51 +0200
Doron Shoham <dorons at Voltaire.COM> wrote:

> 
> 
> FUJITA Tomonori wrote:
> > On Mon, 17 Dec 2007 15:17:16 +0200
> > Erez Zilber <erezz at Voltaire.COM> wrote:
> >
> >   
> >> FUJITA Tomonori wrote:
> >>     
> >>> On Mon, 10 Dec 2007 10:03:25 -0500
> >>> Pete Wyckoff <pw at osc.edu> wrote:
> >>>
> >>>   
> >>>       
> >>>> This is the third major release of support for iSCSI Extensions
> >>>> for RDMA (iSER) to the existing TGT user space SCSI target.  It
> >>>> uses OpenFabrics libraries and kernel drivers to act as a SCSI
> >>>> target over RDMA-capable devices.  The code has been tested
> >>>> against the existing Linux iSER initiator over InfiniBand cards,
> >>>> but should be specification compliant and work generally.
> >>>>
> >>>> A bit of documentation is included, and a short technical report is
> >>>> available at http://www.osc.edu/~pw/papers/iser-snapi07.pdf with
> >>>> slides from a presentation at
> >>>> http://www.osc.edu/~pw/papers/wyckoff-iser-snapi07-talk.pdf .
> >>>>
> >>>> The iSER patches can be downloaded from:
> >>>>
> >>>>         git://git.osc.edu/tgt
> >>>>
> >>>> or browsed at:
> >>>>
> >>>>         http://git.osc.edu/?p=tgt.git;a=summary
> >>>>
> >>>> Changes since previous series are as follows.
> >>>>     
> >>>>         
> >>> I merged all the patches. Now mainline tgt supports iSER. Thanks!
> >>>
> >>> I also applied some patches that could break iSER support. iSER
> >>> people, please test the latest tree.
> >>>   
> >>>       
> >> We ran some tests on it. Most of them are ok except for fsck. We ran it
> >> in the following way:
> >>
> >> seed5:/tmp/regtest # parted -s /dev/sdb mkpart primary 0 8500
> >> seed5:/tmp/regtest # for ((i=1;i<=1000;i++)) do mkfs -t ext2 -q
> >> /dev/sdb1; fsck -y -ft ext2 /dev/sdb1; echo iteration $i is done; done
> >>
> >> fsck is ok most of the time, but once in a while it looks like this
> >> (after ~300 iterations):
> >>
> >> fsck 1.38 (30-Jun-2005)
> >> e2fsck 1.38 (30-Jun-2005)
> >> Pass 1: Checking inodes, blocks, and sizes
> >> Pass 2: Checking directory structure
> >> Pass 3: Checking directory connectivity
> >> Pass 4: Checking reference counts
> >> Pass 5: Checking group summary information
> >> /dev/sdb1: 11/1038336 files (0.0% non-contiguous), 32599/2075195 blocks
> >> seed5:/tmp/regtest # mkfs -t ext2 -q /dev/sdb1
> >> seed5:/tmp/regtest # fsck -y -ft ext2 /dev/sdb1
> >>     
> >
> > Sounds like data corruption. Do you see the same problem with IPoIB?
> > _______________________________________________
> > Stgt-devel mailing list
> > Stgt-devel at lists.berlios.de
> > https://lists.berlios.de/mailman/listinfo/stgt-devel
> >   
> Hi,
> I'm working with Erez and I tried this with tcp session and there 
> weren't any problems.

Thanks for confirming. So it's the iSER problem.

I might break Pete's iSER code so can you revoke the latest three
patches and try the same tests?


rouen:~/git/tgt$ git-reset --hard HEAD~3
HEAD is now at 224ca81... iscsi: add iser support

rouen:~/git/tgt$ git-log |head -5
commit 224ca81bca8dead8dd355d62422e11fe23f7bdc4
Author: Pete Wyckoff <pw at osc.edu>
Date:   Mon Dec 10 10:06:27 2007 -0500


Thanks,