Grateful to Buddy Lumpkin Kevin Buterbaugh Ronald Loftin Steve Hastings Darren Dunham Adeel Khurshid Warren Brennan Betrand_Hutin@notes.amdahl.com David Byers John Marrett Derrick Daugherty Steve Mickeler Mike Ekholm Before I rebooted my server last friday, I tried drvconfig, disks, and devlinks but the the new lun was not recognized. Then I tried to do a modunload and wasn't able to do it. After the reboot, the server saw the new lun. I will include Buddy Lumpkin's thourough and clear response below. Buddy wrote: All of the kernel drivers in /kernel/drv and usr/kernel/drv have a simple short name. There is sd, st, arp, ip, tcp to name a few. Each of these drivers may have a corresponding <drivername>.conf file such as sd.conf, st.conf, etc.. depending on how they must "tie in" to the root nexus node. In order to make a driver re-read this configuration file, you must modunload and modload it. Since it's attached to the kernel, there is very little flexibility (you can't kill -HUP it for example). With respect to the sd driver (which uses sd.conf), since it is the driver that gives access to all scsi nexus busses, and scsi devices, you can't unload it. If you try a modunload -i <sd's number> you will just get device busy. This is why you have to reboot. Now if you put a generic entry for every lun you think you will ever need, it will just take a lot longer to boot while the sd driver probes for all of those luns, and you can add the lun on the fly and discover the disk in /devices with drvconfig, which also re-writes /etc/path_to_inst, and create symbolic links back to /dev with disks and devlinks but this is only if you already have a generic entry in sd.conf for that particular LUN (There are already entries for LUN0). Daniel --- Daniel Nguyen <rookie_ma@yahoo.com> wrote: > I'm getting mix responses with this question. Some > suggest that it cannot be done. Some suggest it can > done with > > # drvconfig > # devlinks > # disks > > Because it's a production box, I'm going to hold off > teh latter suggestion. > > Grateful to > Michael Price > Kevin Buterbaugh > Stephen Forbes > Mark Neill > James Fredrickson > Ken_Germann@bluecrossmn.com > mike.salehi@kodak.com > Thomas Knox > Ronald Loftin > Paul Frederiksen > > > I've just editted the sd.conf file. I know I have > to > > reboot in order for it to take effect. Is there a > > way > > without having to reboot? > > > > Daniel __________________________________________________ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/Received on Tue May 22 12:39:23 2001
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