dmraid sometimes fails to find promise pdc metadata. I have analyzed the failure and have figured out that the simple offset from the end of the disk is not enough. The metadata is in the beginning of what the controller thinks is the last cylinder of the disk. If you examine the dmraid -n output, 0x22b raid.sectors: 63, in this case the place to look for the metadata is near the end of the disk but a in sector number divisible by 63. I have worked around this problem by adjusting the host protected area using hdparm, but this is not an ideal solution.
Let me know if you want more details,
-James
_______________________________________________ Ataraid-list mailing list Ataraid-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ataraid-list
