RAID1 size issue with PDC20265

[Alex Ryabtsev]

Hi Heinz,

while I was on research of possible fix of my problem, I saw someone
else has it too, but I barely will be able find it again. And one more,
let me clarify the issue:
tight now, I am using rc5 (I tried to switch to rc6, but as I mentioned
- it is changing set name (from pdc_fiaaeaab to pdc_bahdfcgbc) and
instead of five 1,2,3,5,6 (I have extended partition as well) it creates
only first three.

But, as I said - both versions can't see more than 100G there. And here,
as a reference output from dmraid -rD (version rc6):
/dev/hde: pdc, "pdc_bahdfcgbc", mirror, ok, 195360896 sectors, data@ 0
/dev/hdg: pdc, "pdc_bahdfcgbc", mirror, ok, 195360896 sectors, data@ 0

Regards,
Alex

On Fri, 2005-03-11 at 15:46 +0100, Heinz Mauelshagen wrote:
> On Fri, Mar 11, 2005 at 02:19:50AM -0500, Alex Ryabtsev wrote:
> > Hi Peter,
> > 
> > it is not exactly controller (add-in card) - it is integrated chipset of
> > ASUS A7V motherboard with patched _BIOS_ to being able to boot from RAID
> > and use it under other supported systems (Windows perhaps) and have
> > redundancy for system boot as well too. I am not using patched dmraid (I
> > just pointed on that post in case if my problem has same roots). 
> > 
> > And as I said, it is working for me fine, but I am loosing here 100G of
> > redundant disk space, which is a bit disappointing ;-).
> 
> Alex,
> 
> you're the first to report the pdc size error...
> 
> I followed the metadata format handler code back to the first version,
> and the size error reported seems to be in there since ever :(
> 
> Fix will be in rc7.
> 
> Heinz
> 
> > 
> > Regards,
> > Alex
> > 
> > On Fri, 2005-03-11 at 02:05 -0500, Peter Bense wrote:
> > > Alex,
> > > 
> > > I have a fair bit of experience installing these controllers in Gentoo. 
> > > Your problem description is pretty vague, however.
> > > 
> > > Out of curiousity, why are you using dmraid?  What is it that is
> > > 'patched'?  Please elaborate.
> > > 
> > > I just build a new kernel in Gentoo with PDC support in my installs.  (I
> > > have 3 systems that I've configured with Promise cards in Gentoo...)
> > > 
> > > ./peter
> > > 
> > > Peter T. Bense - Teradata Certified Professional
> > > (ptbense at gwm.sc.edu) - 803-777-9476 
> > > Database Administrator/Webmaster
> > > Prevention Research Center
> > > University of South Carolina
> > > >>> alxsey at hotmail.com 03/11/05 12:22 AM >>>
> > > Hi,
> > > 
> > > being new to this list and to dmraid, I could not be so sure is my
> > > problem is what Paul Moore describes here
> > > (https://www.redhat.com/archives/ataraid-list/2005-February/msg00004.html
> > > - Subject: Re: Some strange behavior with Promise Fasttrak).
> > > 
> > > I am using dmraid (rc5) within Gentoo (using dmraid initrd) on Promise
> > > integrated PDC20265 controller with patched for RAID support BIOS. It
> > > works pretty well (although I had no chance to check raid1 , which I am
> > > using, functionality). There is only problem that from my two 200G hard
> > > drives I have acceseble 100G only (remember, this is RAID1, so I have to
> > > have 200G). dmraid rc6 looks like does not helps here too much, but for
> > > me even makes things worse - it is changing mapped set name and as far
> > > as I can tell, fdisk show me same 100G, and I have only 3 devices
> > > in /dev/mapper instead of 5 I'm having with rc5.
> > > 
> > > Is there any advice for my case or I am too unclear here?
> > > 
> > > Regards,
> > > Alex
> > > 
> > 
> > _______________________________________________
> > Ataraid-list mailing list
> > Ataraid-list at redhat.com
> > https://www.redhat.com/mailman/listinfo/ataraid-list
> 
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> 
> Heinz Mauelshagen                                 Red Hat GmbH
> Consulting Development Engineer                   Am Sonnenhang 11
>                                                   56242 Marienrachdorf
>                                                   Germany
> Mauelshagen at RedHat.com                            +49 2626 141200
>                                                        FAX 924446
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> 
> _______________________________________________
> Ataraid-list mailing list
> Ataraid-list at redhat.com
> https://www.redhat.com/mailman/listinfo/ataraid-list
>