[dm-devel] newbie: Target Length not divisble error

[Hadders]

Hi Heinz,
   Someone in the ata.raid group suggested I manually tweak the stride 
size and update my mkinitrd as there was a problem with a version in its 
nash and parted.
I've done that and it has worked!

Original:  1250275846
1250275846/(2*256) = 2441945.01171875
They said, make an even multiple so take 2441945*512= 1250275840

dm create isw_cdgbeijgjh_iaa 0 1250275846 striped 2 256 8:0 8:16 0
with
dm create isw_cdgbeijgjh_iaa 0 1250275840 striped 2 256 8:0 8:16 0

So I did that. It didn't work, but then they said there was the mkinitrd 
issue. So I updated mkinitrd, rebuilt the initrd, added the raid stuff 
back in and voila!

Of course, this is still only a work around.  Would this calculation 
work for any RAID container stride errors like this one?

Regards. Hadders


Heinz Mauelshagen wrote:
> Hrm, dmraid-1.0.0.rc11 has the stride size fix in,
> which *should* prevent that kernel message to occur.
>
> Can you send me your metadata created with "dmraid -rD" 
> for analysis, please ?
>
> Pack the *.{dat,size,offset} files into isw-Hadders-raid0.tar.bz2
> before sending.
>
> Regards,
> Heinz    -- The LVM Guy --
>
> On Tue, Dec 12, 2006 at 10:21:11PM +0800, Hadders wrote:
>   
>> Hi all,
>>  I'm new to trying to get my Intel SATA RAID 0 container working.  I 
>> want to use the "hardware" mode as oppossed to software RAID so I can 
>> share it with my Windows setups.
>> I've just spent the last three days banging my head against a brick wall.
>> In short, I'm using FC5 and am looking to get the latest kernel, 
>> 2.6.18-1.2239.fc5smp working with this container.  I don't understand 
>> why it doesn't, the base FC5 kernel does.
>> I've just got my SATAII disks and setup the container in the Intel BIOS. 
>> I've installed FC5 from scratch and used anaconda to setup the partitions.
>> When I reboot into my new kernel, I get an error when it tries to 
>> activate the container,  that is
>>
>> device-mapper: table: 253:0 striped: Target length not divisble by chunk 
>> size
>>
>> then I get growled at for using parted and not knowing what I'm doing. I 
>> didn't! honest, I used anaconda.
>> the lines for setting up the container in the init file of the initrd are
>> rmparts sdb
>> rmparts sda
>> dm create isw_cdgbeijgjh_iaa 0 1250275846 striped 2 256 8:0 8:16 0
>> dm partadd isw_cdgbeijgjh_iaa
>>
>> Here's the details of my setup that I can access under 2.6.15-1.2054 
>> (base FC5) kernel
>>
>> dmraid -V
>> dmraid version:        1.0.0.rc11 (2006.05.15) debug
>> dmraid library version:    1.0.0.rc11 (2006.05.15)
>> device-mapper version:    4.5.0
>>
>> dmraid -rD
>> /dev/sda: isw, "isw_cdgbeijgjh", GROUP, ok, 625142446 sectors, data@ 0
>> /dev/sdb: isw, "isw_cdgbeijgjh", GROUP, ok, 625142446 sectors, data@ 0
>>
>> dmraid -s -g
>> *** Superset
>> name   : isw_cdgbeijgjh
>> size   : 1250284892
>> stride : 0
>> type   : GROUP
>> status : ok
>> subsets: 1
>> devs   : 2
>> spares : 0
>> --> Active Subset
>> name   : isw_cdgbeijgjh_iaa
>> size   : 1250275840
>> stride : 256
>> type   : stripe
>> status : ok
>> subsets: 0
>> devs   : 2
>> spares : 0
>>
>> dmsetup status
>> isw_cdgbeijgjh_iaap6: 0 4498137 linear
>> isw_cdgbeijgjh_iaap5: 0 204796557 linear
>> isw_cdgbeijgjh_iaa: 0 1250275846 striped
>> isw_cdgbeijgjh_iaap4: 0 1044947925 linear
>> isw_cdgbeijgjh_iaap3: 0 102398310 linear
>> isw_cdgbeijgjh_iaap2: 0 102398310 linear
>> isw_cdgbeijgjh_iaap1: 0 530082 linear
>>
>> I think the 18-1 kernel uses device-mapper v4.7
>>
>> However, I'm lost as to what to do now. Help! Please!
>>
>> Thanks in advance. Hadley
>>
>> --
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>> https://www.redhat.com/mailman/listinfo/dm-devel
>>     
>
> *** Software bugs are stupid.
>     Nevertheless it needs not so stupid people to solve them ***
>
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>
> Heinz Mauelshagen                                 Red Hat GmbH
> Consulting Development Engineer                   Am Sonnenhang 11
> Storage Development                               56242 Marienrachdorf
>                                                   Germany
> Mauelshagen at RedHat.com                            PHONE +49  171 7803392
>                                                   FAX   +49 2626 924446
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>
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