Re: Using FDR Instant Backup to make FlashCopies
On Wednesday, 09/02/2009 at 02:43 EDT, "Romanowski, John (OFT)" wrote: > If you must DEDICATE full packs then it'd be more reliable to DEDICATE by > address instead of volid Better is to use MDISKs with the DEVNO option; turn off caching for the volume if appropriate. These volumes do not appear in SYSTEM CONFIG as user volumes since you cannot predict the volser. You will see them attached to SYSTEM while they are being used. I also recommend Offline_At_IPL for any DEVNO or DEDICATEd dasd devices. Vary them online in AUTOLOG1. Do not depend on the order in which CP recognizes devices. That's great until the first time the lower-numbered device is physically offline the next time you IPL. Alan Altmark z/VM Development IBM Endicott
Re: Using FDR Instant Backup to make FlashCopies
z/VM does take first device matching a VOLSER . Enter CP QUERY 4506-4507 to see what volid CP saw on them. And check you guest's DEDICATE's to see if they're still DEDICATE by volid: "DEDICATE 1500 VOLID x". If the 4506-4507 volid's match the DEDICATE's then CP dedicated them to the guest instead of the like-named volids at higher addresses as you suspect. If you must DEDICATE full packs then it'd be more reliable to DEDICATE by address instead of volid, using "DEDICATE 1500 4701" this succeeds if the dasd is 'FREE' and is independent of its volid; if you use the 'volid' option then the DEDICATE will fail if the volid isn't what the DEDICATE specifies, as in "DEDICATE 1500 4701 VOLID LEMAI1" HCPLGN090I Device 1500 not defined; device LEMAI1 not available. Put the 4701-4708 dasd OFFLINE_AT_IPL in SYSTEM CONFIG and vary them online in AUTOLOG1's PROFILE EXEC before the guest is autologged. From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Karl Kingston Sent: Wednesday, September 02, 2009 2:13 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Using FDR Instant Backup to make FlashCopies We're running a Domino mail server under z/Linux under z/VM. Volumes are full-pack volumes and are dedicated to the VM guest when we autolog the guest. Dedicates are in the form of "DEDICATE 1500 VOLID x". This has worked well for us. For backing this system up, we use FDR from the z/OS side to backup. Of course, the linux system is down when we do this so we can get a clean copy. Since we're using 8 3390-27's to hold our mail files, our backup window is about 2 hours. In an effort to reduce the size of the window, we used FDR to Flashcopy these volumes to other DASD.And then backup these DASD. My understanding is when using FDR to flashcopy, it will change the VOLSER for the target devices (can't vary them online to z/OS). Our VOLSERS are LEMAI1 - LEMAI8. Reside on units 4701-4708. Our flashcopy targets are on 4506-450D. This scenario worked for several weeks until yesterday. When we autologged the guest machines, somehow they grabbed 4506 and 4507. (I'm assuming somehow the volsers got changed?) Has anybody had any experience with doing something like this? Any idea why z/VM assigned 4506-4507? Correct me if I'm wrong, but z/VM will take the first device it finds matching a VOLSER? What can we do to remedy this? Is this even a good idea? Thanks This e-mail, including any attachments, may be confidential, privileged or otherwise legally protected. It is intended only for the addressee. If you received this e-mail in error or from someone who was not authorized to send it to you, do not disseminate, copy or otherwise use this e-mail or its attachments. Please notify the sender immediately by reply e-mail and delete the e-mail from your system.
Re: Using FDR Instant Backup to make FlashCopies
Sorry sent too quick. If you want to continue to use this method I would change the mail system to use volumes 4506-450D and then use 4701-4708 as the flash copies and then VM will always grab 4506-450D. Jim Dodds Systems Programmer Kentucky State University 400 East Main Street Frankfort, Ky 40601 502 597 6114 From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Dodds, Jim Sent: Wednesday, September 02, 2009 2:33 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: Using FDR Instant Backup to make FlashCopies I can only think of 2 ways that could have happened. One is that the VM system got reIPLed and grabbed the 4506-450D volumes because they had the correct volser and were the 1st one found. If the system did not get reIPLed then somehow something (FDR?) released volumes 4701-4708 from the system and attached volumes 4506-450d to the system. This is normally done by the following commands DET 4701 SYSTEM and ATTACH 4506 SYSTEM. Jim Dodds Systems Programmer Kentucky State University 400 East Main Street Frankfort, Ky 40601 502 597 6114 From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Karl Kingston Sent: Wednesday, September 02, 2009 2:13 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Using FDR Instant Backup to make FlashCopies We're running a Domino mail server under z/Linux under z/VM. Volumes are full-pack volumes and are dedicated to the VM guest when we autolog the guest.Dedicates are in the form of "DEDICATE 1500 VOLID x". This has worked well for us. For backing this system up, we use FDR from the z/OS side to backup. Of course, the linux system is down when we do this so we can get a clean copy. Since we're using 8 3390-27's to hold our mail files, our backup window is about 2 hours. In an effort to reduce the size of the window, we used FDR to Flashcopy these volumes to other DASD.And then backup these DASD. My understanding is when using FDR to flashcopy, it will change the VOLSER for the target devices (can't vary them online to z/OS). Our VOLSERS are LEMAI1 - LEMAI8. Reside on units 4701-4708. Our flashcopy targets are on 4506-450D. This scenario worked for several weeks until yesterday. When we autologged the guest machines, somehow they grabbed 4506 and 4507. (I'm assuming somehow the volsers got changed?) Has anybody had any experience with doing something like this? Any idea why z/VM assigned 4506-4507? Correct me if I'm wrong, but z/VM will take the first device it finds matching a VOLSER? What can we do to remedy this? Is this even a good idea? Thanks
Re: Using FDR Instant Backup to make FlashCopies
I can only think of 2 ways that could have happened. One is that the VM system got reIPLed and grabbed the 4506-450D volumes because they had the correct volser and were the 1st one found. If the system did not get reIPLed then somehow something (FDR?) released volumes 4701-4708 from the system and attached volumes 4506-450d to the system. This is normally done by the following commands DET 4701 SYSTEM and ATTACH 4506 SYSTEM. Jim Dodds Systems Programmer Kentucky State University 400 East Main Street Frankfort, Ky 40601 502 597 6114 From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Karl Kingston Sent: Wednesday, September 02, 2009 2:13 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Using FDR Instant Backup to make FlashCopies We're running a Domino mail server under z/Linux under z/VM. Volumes are full-pack volumes and are dedicated to the VM guest when we autolog the guest.Dedicates are in the form of "DEDICATE 1500 VOLID x". This has worked well for us. For backing this system up, we use FDR from the z/OS side to backup. Of course, the linux system is down when we do this so we can get a clean copy. Since we're using 8 3390-27's to hold our mail files, our backup window is about 2 hours. In an effort to reduce the size of the window, we used FDR to Flashcopy these volumes to other DASD.And then backup these DASD. My understanding is when using FDR to flashcopy, it will change the VOLSER for the target devices (can't vary them online to z/OS). Our VOLSERS are LEMAI1 - LEMAI8. Reside on units 4701-4708. Our flashcopy targets are on 4506-450D. This scenario worked for several weeks until yesterday. When we autologged the guest machines, somehow they grabbed 4506 and 4507. (I'm assuming somehow the volsers got changed?) Has anybody had any experience with doing something like this? Any idea why z/VM assigned 4506-4507? Correct me if I'm wrong, but z/VM will take the first device it finds matching a VOLSER? What can we do to remedy this? Is this even a good idea? Thanks
Re: Using FDR Instant Backup to make FlashCopies
You could use an entry in the "Devices Offline_at_ipl" section of the SYSTEM CONFIG file to insure that those devices were not grabbed by the user by mistake. This is in the CP Planning and Administration manual. The one for 5.3 is here: http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/HCSG0B20/CCONTENTS?SHELF=hcsh2a90&DN=SC24-6083-04&DT=20070423114140 Regards, Richard Schuh From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Karl Kingston Sent: Wednesday, September 02, 2009 11:13 AM To: IBMVM@LISTSERV.UARK.EDU Subject: Using FDR Instant Backup to make FlashCopies We're running a Domino mail server under z/Linux under z/VM. Volumes are full-pack volumes and are dedicated to the VM guest when we autolog the guest. Dedicates are in the form of "DEDICATE 1500 VOLID x". This has worked well for us. For backing this system up, we use FDR from the z/OS side to backup. Of course, the linux system is down when we do this so we can get a clean copy. Since we're using 8 3390-27's to hold our mail files, our backup window is about 2 hours. In an effort to reduce the size of the window, we used FDR to Flashcopy these volumes to other DASD.And then backup these DASD. My understanding is when using FDR to flashcopy, it will change the VOLSER for the target devices (can't vary them online to z/OS). Our VOLSERS are LEMAI1 - LEMAI8. Reside on units 4701-4708. Our flashcopy targets are on 4506-450D. This scenario worked for several weeks until yesterday. When we autologged the guest machines, somehow they grabbed 4506 and 4507. (I'm assuming somehow the volsers got changed?) Has anybody had any experience with doing something like this? Any idea why z/VM assigned 4506-4507? Correct me if I'm wrong, but z/VM will take the first device it finds matching a VOLSER? What can we do to remedy this? Is this even a good idea? Thanks
Using FDR Instant Backup to make FlashCopies
We're running a Domino mail server under z/Linux under z/VM. Volumes are full-pack volumes and are dedicated to the VM guest when we autolog the guest.Dedicates are in the form of "DEDICATE 1500 VOLID x". This has worked well for us. For backing this system up, we use FDR from the z/OS side to backup. Of course, the linux system is down when we do this so we can get a clean copy. Since we're using 8 3390-27's to hold our mail files, our backup window is about 2 hours. In an effort to reduce the size of the window, we used FDR to Flashcopy these volumes to other DASD.And then backup these DASD. My understanding is when using FDR to flashcopy, it will change the VOLSER for the target devices (can't vary them online to z/OS). Our VOLSERS are LEMAI1 - LEMAI8. Reside on units 4701-4708. Our flashcopy targets are on 4506-450D. This scenario worked for several weeks until yesterday. When we autologged the guest machines, somehow they grabbed 4506 and 4507. (I'm assuming somehow the volsers got changed?) Has anybody had any experience with doing something like this? Any idea why z/VM assigned 4506-4507? Correct me if I'm wrong, but z/VM will take the first device it finds matching a VOLSER? What can we do to remedy this? Is this even a good idea? Thanks
