[linux-lvm] LVM and I2O (fwd)

[linux-lvm] LVM and I2O (fwd)

[Michael Marxmeier]

Forwarded message from Jan Strohbehn ...

-------- Original Message --------
Subject: Posting to the LVM Mailing List
Date: Thu, 07 Sep 2000 01:17:17 +0200
From: Jan Strohbehn <j.strohbehn@artstor.de>
Organization: ArtStor AG

Hello, 

I'm trying to get the newest lvm working on I2O-devices, but it seems
that the LVM-tools aren't able to recognize them. Has anyone a hint
are
an idea why this problem appears ???
Are there any workarounds ???


Thank you very much,
Jan Strohbehn





------------------------------------------------------------------
Today's Fortune:

God rest ye CS students now,
Let nothing you dismay.
The VAX is down and won't be up,
Until the first of May.
The program that was due this morn,
Won't be postponed, they say.

	Oh, tidings of comfort and joy,
	Comfort and joy,
	Oh, tidings of comfort and joy.

The bearings on the drum are gone,
The disk is wobbling, too.
We've found a bug in Lisp, and Algol
Can't tell false from true.
And now we find that we can't get
At Berkeley's 4.2.

	(chorus)

Re: [linux-lvm] LVM and I2O (fwd)

[Heinz J. Mauelshagen]

Please look at tools/lib/lvm_dir_cache.c and extend the devdir array,
tools/lib/lvm_check_dev + tools/lib/lvm_partition_count and extend the
valid_majors array.

On Wed, Sep 06, 2000 at 08:32:23PM +0200, Michael Marxmeier wrote:
> Forwarded message from Jan Strohbehn ...
> 
> -------- Original Message --------
> Subject: Posting to the LVM Mailing List
> Date: Thu, 07 Sep 2000 01:17:17 +0200
> From: Jan Strohbehn <j.strohbehn@artstor.de>
> Organization: ArtStor AG
> 
> Hello, 
> 
> I'm trying to get the newest lvm working on I2O-devices, but it seems
> that the LVM-tools aren't able to recognize them. Has anyone a hint
> are
> an idea why this problem appears ???
> Are there any workarounds ???
> 
> 
> Thank you very much,
> Jan Strohbehn
> 
> 
> 
> 
> 
> ------------------------------------------------------------------
> Today's Fortune:
> 
> God rest ye CS students now,
> Let nothing you dismay.
> The VAX is down and won't be up,
> Until the first of May.
> The program that was due this morn,
> Won't be postponed, they say.
> 
> 	Oh, tidings of comfort and joy,
> 	Comfort and joy,
> 	Oh, tidings of comfort and joy.
> 
> The bearings on the drum are gone,
> The disk is wobbling, too.
> We've found a bug in Lisp, and Algol
> Can't tell false from true.
> And now we find that we can't get
> At Berkeley's 4.2.
> 
> 	(chorus)

-- 

Regards,
Heinz      -- The LVM guy --

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Bartningstr. 12
                                                  64289 Darmstadt
                                                  Germany
Mauelshagen@Sistina.com                           +49 6151 7103 86
                                                       FAX 7103 96
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

[linux-lvm] Re: \x7fLVM and I2O

[Jan Strohbehn]

Hi,

I have tried all this but the error still appears. Here's the exact
error message:


root@bonita:~/ > mke2fs /dev/raid/vol1
mke2fs 1.19, 13-Jul-2000 for EXT2 FS 0.5b, 95/08/09
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
100352 inodes, 401408 blocks
20070 blocks (5.00%) reserved for the super user
First data block=1
49 block groups
8192 blocks per group, 8192 fragments per group
2048 inodes per group
Superblock backups stored on blocks:
        8193, 24577, 40961, 57345, 73729, 204801, 221185
 
Writing inode tables: done
ext2fs_mkdir: Attempt to read block from filesystem resulted in short
read while creating root dir
root@bonita:~/ >


Do you have any other idea why this happens ???

Thanks,
Jan


"Heinz J. Mauelshagen" wrote:
> 
> Please look at tools/lib/lvm_dir_cache.c and extend the devdir array,
> tools/lib/lvm_check_dev + tools/lib/lvm_partition_count and extend the
> valid_majors array.
> 
> On Wed, Sep 06, 2000 at 08:32:23PM +0200, Michael Marxmeier wrote:
\x7f> >
> > Hello,
> >
> > I'm trying to get the newest lvm working on I2O-devices, but it seems
> > that the LVM-tools aren't able to recognize them. Has anyone a hint
> > are
> > an idea why this problem appears ???
> > Are there any workarounds ???
> >
\x7f

Re: [linux-lvm] Re: LVM and I2O

[Andreas Dilger]

Jan, you write:
> I have tried all this but the error still appears. Here's the exact
> error message:
>
> ext2fs_mkdir: Attempt to read block from filesystem resulted in short
> read while creating root dir

Is it possible that the I2O driver/disk itself is not working?  Have you
tried something like "dd if=/dev/zero of=/dev/{i2o_disk}" to test writes,
and "dd if=/dev/{i2o_disk} of=/dev/null" to test reads?  The block counts
returned from the read and write tests should match...  It may be that
there is a bad block on the disk, and with LVM it changes the alignment
of the FS so that the bad block is under some metadata (read/writted at
mke2fs time), whereas the block is unused without LVM.

If that works OK, try sending the end of "strace mke2fs" on your disk to
see what exactly is happening.

Cheers, Andreas
-- 
Andreas Dilger  \ "If a man ate a pound of pasta and a pound of antipasto,
                 \  would they cancel out, leaving him still hungry?"
http://www-mddsp.enel.ucalgary.ca/People/adilger/               -- Dogbert