On 23 Jul 2001, Mark Kilmartin wrote:
> AFAIK The RAID Card makes any Arrays on it look like SCSI disks.
> Well they are accessed as sd?
i don't know.. :) i don't know the megaraid card.
> Is there a way to ask Linux to scan the SCSI buses and tell me about
> what ever disks(Not physical disks) it sees.
either a reboot, or a driver specific command to /proc/scsi/<driver>
(if the driver supports it).
> I can get info about these two using scsi_info
what does scsi_info say?
what does cat /proc/scsi/scsi say?
is there an entry in /proc/scsi for your megaraid card?
if so, what does cat /proc/scsi/<megaraid/... say?
> So if there was any way of getting info on all the available
> drives/arrays I would then know which one wasn't already available and
> the options to use to activate it using the add-single-device command.
however, didn't you say that the new disk has been /added/ to an
existing disk? ie an existing disk has been expanded.
if so you'll need to unmount everything on it, then if the megaraid
disk is listed in /proc/scsi/scsi:
echo "scsi remove-single-device a b c d" > /proc/scsi/scsi
cat /proc/scsi/scsi (make sure it is gone)
echo "scsi add-single-device a b c d" > /proc/scsi/scsi
cat /proc/scsi/scsi (make sure it is back)
fdisk /dev/sd? (see if linux sees the extra space)
if that doesn't work, or the disk isn't listed in /proc/scsi/scsi,
then there's still one option: if megaraid is a module and you are
able to umount all the disks on it: unload and reload the module.
if none of those work... sorry you have to reboot.
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