Re: asr: Invalid magic number in RAID table; saw 0x0, expected 0x900765C4 on sdb
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On Tue, May 29, 2007 at 05:23:05PM -0400, David Rice wrote: > I am trying to help a user who is getting the above error message. Can > someone take a look at this? > http://ubuntuforums.org/showthread.php?t=456042 > > They have posted a dump of the metadata in the forums as well as various > commands. The message indicates that the asr (Adaptec HostRAID) driver in dmraid can't find a HostRAID RAID header on the disk. This is a benign error during RAID device discovery, though I concede that the error message is not clear about that. In any case, the user's machine uses /dev/mapper/isw_blahblahblah, which indicates that his system is really using Intel Software RAID, so the error message is not what's causing his problem.
Maybe this "error" message should only show up with -verbose or -debug ? It is confusing for newbies (isn't everything?)
(I believe the follow-up postings on that URL about dm locking down the disk partitions being the reason why he can't mount /dev/sdXY are correct, though I don't use bleeding-edge Ubuntus. :))
dmraid is not recognizing any partitions on /dev/mapper/nvidia_bcacibbh - but he says there is one big ntfs partition there. maybe it is not a raid volume at all?
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