Re: Fasttrack TX2 - Raid10, dmsetup table example?
"James Olson" <[email protected]>
| Newsgroups | gmane.linux.ataraid |
|---|---|
| Organization | Lycos. Inc. |
| Message-ID | <20061209103601.HM.0000000000000GN@big_spender12.bos-mail-wwl14.lycos.com> |
I use the same controller card FastTrak 100 TX2 with a pdc20270 controller chip. It does not support raid 10 (1+0). It supports raid 01 (0+1) there is a difference. If you had a four drive setup you were probably using raid 0+1 (the other possible choices are raid 0 striped and raid 1 mirrored). These controller cards are readily available on Ebay you could obtain one then recreate the array. Dmraid depends on the controller metadata being there in its proper place on the drives so thats why I suggest replacing the card. ---------[ Received Mail Content ]---------- Subject : Re: Fasttrack TX2 - Raid10, dmsetup table example? Date : Sat, 09 Dec 2006 12:01:17 +0100 From : Torsten Krah <[email protected]> To : "ATARAID (eg, Promise Fasttrak, Highpoint 370) related discussions" <[email protected]> Some guesses - maybe they are right and someone can confirm. hda1 and hdc1 are the raid0, the other ones are used as mirror devices. If i would make a raid0 with dmsetup to make one block device, i should get my partition back? Am i right? How can i find out which disks are used as mirror and which was used as stripe set - last 20 sectors or something, which information is essential to know this? Can i try various combinations and see if fdisks founds some useful partition table? Can i do any damage to the raid set by using dmraid to create the block device and searching for partitions on it? Should be only read access - should be safe, shouldn't it? kind regards Torsten Torsten Krah schrieb: > Hello. > > Got a raid10 array on a pdc20270 controller, fasttrack100 tx2. > Some loss of power made some serious damage to the complete pc. > The disks however are still working - the controller is a little bit > broken - no boot message about the raid things, only ide does still > work, more or less ( dma errors etc. pp ). > > So i took the drives and put in on a normal ide controller - they are > all recognized. > running dmraid on a 2.6.17 kernel, ubuntu edgy, does found nothing. > > Drives are found as follows: > > hda, hda1 > hdb - unknown partition table > hdc, hdc1 > hdd - unknown partition table > > I know there was a 10 setup prior on these 4 disks - although i don't > know how the pdc controller does the mapping on 4 drives. > > Is it possible to create the mappings for a raid10 again - to get the > only partition on those drives back? > Anyone a example, found many for raid0 or raid1, but nothing for 10 - i > don't want to do some damage to the raid ( i hope its still there ... ), > so i'll asking before. > > thx for any help. > > kind regards > > Torsten > > _______________________________________________ > Ataraid-list mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/ataraid-list _______________________________________________ Ataraid-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/ataraid-list ---------- Lycos Cinema : Catch up with your friends and see free movies online - watch, chat & connect now >> http://cinema.lycos.com _______________________________________________ Ataraid-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/ataraid-list