isw raid signature -- resent with (hopefully) better fomatting

[Heinz Mauelshagen]

On Tue, Aug 17, 2004 at 10:25:51AM -0700, Jane Liu wrote:
> I appologyze for the earlier post, which I just realized is a pain to read. Hopefully this one's better. 
> 
> I'm trying to test the isw extension using ICH5-R SATA controllers. I have tried both RAID 0 and RAID 1, and so far haven't been able to discover any BIOS-configured arrays. From my debug prints it looks like the metadata handler couldn't find the config signature. I calculated the number of sectors and superblock offset by hand, and they seem to be correct. I also dumped the disk content at that offset, and it's all null characters. So now I'm wondering if:
> 
> - I'm using an unsupported controller

Probably. I only had access to ICH6 metadata so far.

> - I'm using unsupported BIOS 

Same point.

Looks like this, reading your mail til the end.


> - the metadata handler is looking in the wrong place

Unlikely.

> - well, something else is wrong

Signature seems to be at the same offset on each disk but is different
from ICH6.

Could you send me metadata copies of the 2 drives involved (sda and sdb) and
the size in 512 byte sectors for both drives (should be both 156296385 sectors,
right?) in private email for further investigation, please (dd the last
10k into files named sda.dat and sdb.dat, tar them up in Jane_Liu-ICH5.tar and
bzip2 the tar-archive).
Any additional isw config output you can provide would be useful.

Regards,
Heinz    -- The LVM Guy --


> 
> Here's some details on my setup:
> dmraid-1.0.0-rc2
> Asus P4P800 mobo, ICH5-R controller hub, pair of 80 GB SATA drives
> SuSE 9.1 upgraded to 2.6.7 kernel with 2.6.7-udm1 patches
> device-mapper.1.00.19
> 
> Below is the output from running "dmraid -v -ay"(with some debug prints). I have a RAID 1 set up across /dev/sda and /dev/sdb.
> 
> Failed to find sysfs mount point
> Carrying on with /dev/
> checking for iswraid at /dev/sdb
> checking signature:
> total sectors: 0x000000000950e4c1
> isw_sboffset: 0x00000012a1c97e00
> looking for: Intel Raid ISM Cfg Sig. 
> found: 
> ----
> checking for iswraid at /dev/sda
> checking signature:
> total sectors: 0x000000000950e4c1
> isw_sboffset: 0x00000012a1c97e00
> looking for: Intel Raid ISM Cfg Sig. 
> found: 
> ----
> checking for iswraid at /dev/hda
> checking signature:
> total sectors: 0x0000000003effc10
> isw_sboffset: 0x00000007dff81c00
> looking for: Intel Raid ISM Cfg Sig. 
> found: üÃÎ???ØQt³î®???Ò??W]5mqOÀ7~S}ÎóDvn@???cüs ªÍA8 Çfyå0
> ØÕyÁN???n5í®M???ÁÊÒw ¹²kx"éÕ{t°
> úÅGe!Š`1Û??ß~žmÏCø-h@Áó5ôfJhÓ??? uYÊæÀw~tÓ???Óíß2ÜnÒ?ð4
> 	???)ggÔpRTqKØÔTãÓ©qÌÙ???°Ö¡6@Ž??ü9Ù_??7¡œÙç@Mž??e¥??2ŸmR V±¿'???d|5)ëÂ#v??³????????^e08šDB+Ù???ÿ#°???OH×46IüËGV1
(Œš?????`
YÓ>ãïøM,U(HÒéT???]Èy
ÆÒ?u
> Ä+???ËÍ??????NM_!
> C`gò.eA¹ÂfX
> ----
> No Software RAID disks
> 
> I also dumped out contents of /dev/sda at various places, and saw some strings containing "Raid ISM" between offset 21110000 and 21120000. They didn't exactly match the signature string, tho.
> 
> All replies most appreciated. Please let me know if more info is needed.
> 
> Thanks,
> Jane
> 

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Heinz Mauelshagen                                 Red Hat GmbH
Consulting Development Engineer                   Am Sonnenhang 11
                                                  56242 Marienrachdorf
                                                  Germany
Mauelshagen at RedHat.com                            +49 2626 141200
                                                       FAX 924446
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