On Fri, May 13, 2011 at 06:33:56PM +0200, Emmanuel Florac wrote: > Le Fri, 13 May 2011 17:39:22 +0200 > Louis-David Mitterrand <vindex+lists-linux-scsi@xxxxxxxxxxx> écrivait: > > > On each disk the third partition /dev/sdX3 is the last and largest but > > it seems the Adaptec controller doesn't "see" the end of the disk > > where the md superblock is? Does that make sense? > > Not to me, but I've seen weirder things from Adaptec firmwares :) > Are the drives configured as JBOD, or something else? You may segment > the drives (for instance if their sizes differ slightly), so maybe some > of them appear as volume segments instead of JBOD? Actually I didn't configure the Adaptec controller at all, just let it boot with disks transfered from the LSI controller. So the disks are not JBOD, in the adaptec sense at least, which requires "initializing" (meaning wiping) disks. I thought JBOD meant "just use the disks as they are" but that is in fact what adaptec calls "legacy" mode: May 13 17:09:57 zenon kernel: scsi 0:0:0:0: Direct-Access Adaptec 6805 Legacy V1.0 PQ: 0 ANSI: 2 And in that "legacy" mode the disk geometry appears slightly smaller to the OS than with the LSI controller, hence my problem with /dev/md2. And /dev/md2 is a huge backup partition that would be very inconvenient to wipe and re-create (xfs doesn't support shrinking alas, so I can' shrink the partition). Anyway thanks for your input, -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
