Zoltan, Look at how udev config and rules are configured. It may be that the PowerPath installation affected the configuration.
Cheers, Neil Strand Storage Engineer - Legg Mason Baltimore, MD. (410) 580-7491 Whatever you can do or believe you can, begin it. Boldness has genius, power and magic. -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of Zoltan Forray/AC/VCU Sent: Wednesday, September 22, 2010 2:53 PM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] Looking for SAN/tape experts assistance I have mentioned in previous posts that we are putting up 2-new RH Linux based TSM server . These are the first of my existing 5-Linux servers to use EMC SAN storage. With every new adventure, we get new problems. This one is driving everyone crazy and hope someone out there can point us in the right direction. We have seen posts in ADSM-L that sorta talk about it, but nothing that explains what is going on with us or how to resolve it. Both new servers have been configured identically when it comes to the OS (RedHat Linux 5.5 kernel 2.6.18-194.11.3.el5) software and other hardware supporting software (EMC Powerpath and IBM lin_tape drivers - 1.41.1 for the TS1120/1130 drives) The problem is this. Every time we reboot one of the new servers, the values in /proc/scsi/IBMtape is different in the assignment of /dev numbers to the drives. It seems to find the tape drives in a different order each time. None of my 5-production nor the other new TSM server have this problem (I have rebooted the 2nd new server 4-times and the /dev/IBMtape? values stay the same). When looking through the "fixlist" for lin_tape (usually engineering-speak), we saw this interesting entry at the 1.37 level: Removed persistent naming script in favor of new method Questions come to mind about things like "what naming script"......."what new method" .... "could this possibly be related to what we are experiencing"? We have spent all day trying to figure this wrinkle out. Any suggestions are greatly appreciated. Zoltan Forray TSM Software & Hardware Administrator Virginia Commonwealth University UCC/Office of Technology Services zfor...@vcu.edu - 804-828-4807 Don't be a phishing victim - VCU and other reputable organizations will never use email to request that you reply with your password, social security number or confidential personal information. For more details visit http://infosecurity.vcu.edu/phishing.html IMPORTANT: E-mail sent through the Internet is not secure. Legg Mason therefore recommends that you do not send any confidential or sensitive information to us via electronic mail, including social security numbers, account numbers, or personal identification numbers. Delivery, and or timely delivery of Internet mail is not guaranteed. Legg Mason therefore recommends that you do not send time sensitive or action-oriented messages to us via electronic mail. This message is intended for the addressee only and may contain privileged or confidential information. Unless you are the intended recipient, you may not use, copy or disclose to anyone any information contained in this message. If you have received this message in error, please notify the author by replying to this message and then kindly delete the message. Thank you.
