Messages in this thread | | | Date | Mon, 30 Aug 1999 12:30:01 -0400 (EDT) | From | Russ Savela <> | Subject | Re: SCSI /dev/sg question |
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This is a chicken/egg type problem. A lot of raid controllers can't be managed until a lun is created (since there aren't any devices). Some work around this by having a pass through driver that is installed to configure the array. Once this is done, the driver is removed.
A lot of lower-end controller boards just use dos utilities, but many higher end / external controllers just don't work that way.
-russ
> > You need special tools to set up your SCSI config. I don't think, your > Hardware RAID will be configurable by SCSI commands sent to it. > > If you have a hardware RAID, it should provide you the possibility to have > config data exchanged in some way. Maybe by providing a device which you can > IOCTL or talk to (and I would use a char device rather then simulate a SCSI > device), but preferably by a /proc/scsi/myraid/? interface. > > I didn't look how the RAIDs in Linux do it, BTW. Have a look at the DAC960, > eata, gdth, megaraid, pci2xx drivers. > > Regards, > -- > Kurt Garloff <garloff@suse.de> Wuppertal, FRG > PGP2 key: See mail header, key servers Linux kernel development > SuSE GmbH, Nürnberg, FRG SCSI drivers: tmscsim(DC390), DC395 >
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