RE: RE: [Veritas-bu] Hardware compression not working
Date: Tue, 18 Apr 2006 10:42:58 -0400 From: Carlisle, D Renee [EMAIL PROTECTED] I checked all that and it looks good=2E Sg=2Econf is identical, major numb= ers and minor number convention on the HP looks the same (they don't exist = on sun) no mention of compression or errors in bptm=2E Our issue is that = if we don't figure this out by Friday, we will be out of tapes=2E=0D=0A =0D= What makes you believe that hardware compression is not working? Testing how many copies of a repeatable data set go to a newly expired tape before a second tape gets used, and repeating that (same tape, same data, same client) with 1 1.5:1 or 2:1 difference would be a clear indication. Didn't you mention that you had changed to a new (partitioned) library and drives, and were getting what you suspect is no h/w compression on one side of the library? I'd want to know the library's contribution to your issue by testing. AFAIK, hardware compression is solely controlled by a SCSI command which sets the mode; the bits for which you see in the multiple-mode fields in Solaris st.conf entries. That's a driver function. On Solaris, you can look in messages on startup and see if the capability bits and modes you expect are what are reported. I'd suggest proving the compression assertion first, then getting support people for the drive/library/drivers involved. ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
RE: RE: [Veritas-bu] Hardware compression not working
I answered the compression issue in a previous post, we definitely are not getting compression. The reason I mentioned the library is that it does not seem to be at the hardware level since the tapes are obviously compressing on the test side of the world and we are using the same library. IBM, Sun, and Veritas are all involved right now (even though it is across HP, Sun, and Windows), but everyone is scratching their heads. Just trying to think outside the box now. Reneé Carlisle Sr. Systems Administrator 675 Basket Road Webster, NY 14580 Jer 29:11-13 585-216-0497 (w) 585-472-2360 (c) -Original Message- From: bob944 [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 18, 2006 11:20 AM To: veritas-bu@mailman.eng.auburn.edu Cc: Carlisle, D Renee Subject: RE: RE: [Veritas-bu] Hardware compression not working Date: Tue, 18 Apr 2006 10:42:58 -0400 From: Carlisle, D Renee [EMAIL PROTECTED] What makes you believe that hardware compression is not working? I'd suggest proving the compression assertion first, then getting support people for the drive/library/drivers involved. - The information contained in this message may be privileged, confidential, and protected from disclosure. If the reader of this message is not the intended recipient, or any employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer. Thank you. Paychex, Inc. ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
RE: RE: [Veritas-bu] Hardware compression not working
Didn't respond earlier because I thought your post regarding Sun only. On HP the device's minor specifies settings of the drive's device entries - it will have several. You need to make sure your minor numbers are for the Best density which would include compression. Also as noted by another poster I have seen on HP-UX that when I wrote to a drive using its non-compressed device entry that subsequent writes to that device where I couldn't specify the density made it continue to write in a non-compressed mode. This was for a backup I was doing from the boot prompt (don't remember how exactly I did that). By booting up the OS then doing a short write to the device file that had compression enabled then going back down to the boot prompt I was able to make it write compression. Not sure how familiar with HP-UX you are. It has a command called lssf for listing special files. For tape devices it will show you detail. Example chosen at random from my HP-UX master server: lssf /dev/rmt/c9t3d5BEST stape card instance 9 SCSI target 3 SCSI LUN 5 att best density available at address 0/6/1/0/4/0.98.54.255.1.3.5 /dev/rmt/c9t3d5BEST Shows it is the best density available so I know it has compression. You might want to try running lssf on the devices you have configured in HP-UX to insure they have this. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Carlisle, D Renee Sent: Tuesday, April 18, 2006 12:16 PM To: [EMAIL PROTECTED]; veritas-bu@mailman.eng.auburn.edu Subject: RE: RE: [Veritas-bu] Hardware compression not working I answered the compression issue in a previous post, we definitely are not getting compression. The reason I mentioned the library is that it does not seem to be at the hardware level since the tapes are obviously compressing on the test side of the world and we are using the same library. IBM, Sun, and Veritas are all involved right now (even though it is across HP, Sun, and Windows), but everyone is scratching their heads. Just trying to think outside the box now. Reneé Carlisle Sr. Systems Administrator 675 Basket Road Webster, NY 14580 Jer 29:11-13 585-216-0497 (w) 585-472-2360 (c) -Original Message- From: bob944 [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 18, 2006 11:20 AM To: veritas-bu@mailman.eng.auburn.edu Cc: Carlisle, D Renee Subject: RE: RE: [Veritas-bu] Hardware compression not working Date: Tue, 18 Apr 2006 10:42:58 -0400 From: Carlisle, D Renee [EMAIL PROTECTED] What makes you believe that hardware compression is not working? I'd suggest proving the compression assertion first, then getting support people for the drive/library/drivers involved. - The information contained in this message may be privileged, confidential, and protected from disclosure. If the reader of this message is not the intended recipient, or any employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer. Thank you. Paychex, Inc. ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
RE: RE: [Veritas-bu] Hardware compression not working
Not sure if this is the issue for you but our experience with tape drives and HP might help. We're using AIT-3 and what we've had to do from the beginning is configure them to emulate AIT-1 drives. This is done from our library, not on the host. It's necessary because HP only produces drivers for the AIT-1 model -- I guess they just haven't felt like keeping up the drivers as new models come out. At any rate, this might be something to consider in your case. I don't have the beginning of the thread so I don't know what type/model tape drive you're using but you might want to check to make sure they have driver support for this model. Or you could look into emulating older models of the same tape drive and see what happens. -Dave -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Carlisle, D Renee Sent: Tuesday, April 18, 2006 12:32 To: Jeff Lightner; [EMAIL PROTECTED]; veritas-bu@mailman.eng.auburn.edu Subject: RE: RE: [Veritas-bu] Hardware compression not working We are using BEST on HP, we have done numerous testing with new tapes and consistent data and compression has not been working since we switched over to the IBM library. Reneé Carlisle Sr. Systems Administrator 675 Basket Road Webster, NY 14580 Jer 29:11-13 585-216-0497 (w) 585-472-2360 (c) -Original Message- From: Jeff Lightner [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 18, 2006 2:42 PM To: Carlisle, D Renee; [EMAIL PROTECTED]; veritas-bu@mailman.eng.auburn.edu Subject: RE: RE: [Veritas-bu] Hardware compression not working Didn't respond earlier because I thought your post regarding Sun only. On HP the device's minor specifies settings of the drive's device entries - it will have several. You need to make sure your minor numbers are for the Best density which would include compression. Also as noted by another poster I have seen on HP-UX that when I wrote to a drive using its non-compressed device entry that subsequent writes to that device where I couldn't specify the density made it continue to write in a non-compressed mode. This was for a backup I was doing from the boot prompt (don't remember how exactly I did that). By booting up the OS then doing a short write to the device file that had compression enabled then going back down to the boot prompt I was able to make it write compression. Not sure how familiar with HP-UX you are. It has a command called lssf for listing special files. For tape devices it will show you detail. Example chosen at random from my HP-UX master server: lssf /dev/rmt/c9t3d5BEST stape card instance 9 SCSI target 3 SCSI LUN 5 att best density available at address 0/6/1/0/4/0.98.54.255.1.3.5 /dev/rmt/c9t3d5BEST Shows it is the best density available so I know it has compression. You might want to try running lssf on the devices you have configured in HP-UX to insure they have this. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Carlisle, D Renee Sent: Tuesday, April 18, 2006 12:16 PM To: [EMAIL PROTECTED]; veritas-bu@mailman.eng.auburn.edu Subject: RE: RE: [Veritas-bu] Hardware compression not working I answered the compression issue in a previous post, we definitely are not getting compression. The reason I mentioned the library is that it does not seem to be at the hardware level since the tapes are obviously compressing on the test side of the world and we are using the same library. IBM, Sun, and Veritas are all involved right now (even though it is across HP, Sun, and Windows), but everyone is scratching their heads. Just trying to think outside the box now. Reneé Carlisle Sr. Systems Administrator 675 Basket Road Webster, NY 14580 Jer 29:11-13 585-216-0497 (w) 585-472-2360 (c) -Original Message- From: bob944 [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 18, 2006 11:20 AM To: veritas-bu@mailman.eng.auburn.edu Cc: Carlisle, D Renee Subject: RE: RE: [Veritas-bu] Hardware compression not working Date: Tue, 18 Apr 2006 10:42:58 -0400 From: Carlisle, D Renee [EMAIL PROTECTED] What makes you believe that hardware compression is not working? I'd suggest proving the compression assertion first, then getting support people for the drive/library/drivers involved. - The information contained in this message may be privileged, confidential, and protected from disclosure. If the reader of this message is not the intended recipient, or any employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer. Thank you. Paychex, Inc. ___ Veritas-bu
RE: RE: [Veritas-bu] Hardware compression not working
Renee I left my HP-UX life behind a couple of years ago but have you installed the LTO drivers for HP-UX from IBM? We used to have a 3584 connected to various HP-UX servers and I remember having to install something from IBM. Here is a link that may help:- http://www-1.ibm.com/support/docview.wss?uid=ssg1S4000102 Have you seen this Red book from IBM about connecting drives to UNIX systems? http://www.redbooks.ibm.com/abstracts/SG246502.html?Open Don't know if you have access to HP's ITRC but here is a thread from there:- Jun 3, 2005 07:10:21 GMT Hi, Could anyone help me to configure ibm 3584 tape library for rp2470 ? With thanks regards Sid Leif Halvarsson Jun 3, 2005 07:55:00 GMT 3 pts Hi, IBM LTO drives need a special driver (ATDD) which can be downloaded from IBM but, perhaps you should check this thread before: http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=620564 Thanks for ur reply. I already downloaded the binaries and installed but it didn't work. Sid Leif Halvarsson Jun 3, 2005 13:10:28 GMT 3 pts I downloaded the drivers from following site ftp://ftp.software.ibm.com/storage/devdrvr/HPUX/11i_PCI/ and installed the drivers. Then I changed kernel parameters for acdd to be loaded automatically. And it fixed the issue. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Carlisle, D Renee Sent: Wednesday, 19 April 2006 7:32 am To: Jeff Lightner; [EMAIL PROTECTED]; veritas-bu@mailman.eng.auburn.edu Subject: RE: RE: [Veritas-bu] Hardware compression not working We are using BEST on HP, we have done numerous testing with new tapes and consistent data and compression has not been working since we switched over to the IBM library. Reneé Carlisle Sr. Systems Administrator 675 Basket Road Webster, NY 14580 Jer 29:11-13 585-216-0497 (w) 585-472-2360 (c) -Original Message- From: Jeff Lightner [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 18, 2006 2:42 PM To: Carlisle, D Renee; [EMAIL PROTECTED]; veritas-bu@mailman.eng.auburn.edu Subject: RE: RE: [Veritas-bu] Hardware compression not working Didn't respond earlier because I thought your post regarding Sun only. On HP the device's minor specifies settings of the drive's device entries - it will have several. You need to make sure your minor numbers are for the Best density which would include compression. Also as noted by another poster I have seen on HP-UX that when I wrote to a drive using its non-compressed device entry that subsequent writes to that device where I couldn't specify the density made it continue to write in a non-compressed mode. This was for a backup I was doing from the boot prompt (don't remember how exactly I did that). By booting up the OS then doing a short write to the device file that had compression enabled then going back down to the boot prompt I was able to make it write compression. Not sure how familiar with HP-UX you are. It has a command called lssf for listing special files. For tape devices it will show you detail. Example chosen at random from my HP-UX master server: lssf /dev/rmt/c9t3d5BEST stape card instance 9 SCSI target 3 SCSI LUN 5 att best density available at address 0/6/1/0/4/0.98.54.255.1.3.5 /dev/rmt/c9t3d5BEST Shows it is the best density available so I know it has compression. You might want to try running lssf on the devices you have configured in HP-UX to insure they have this. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Carlisle, D Renee Sent: Tuesday, April 18, 2006 12:16 PM To: [EMAIL PROTECTED]; veritas-bu@mailman.eng.auburn.edu Subject: RE: RE: [Veritas-bu] Hardware compression not working I answered the compression issue in a previous post, we definitely are not getting compression. The reason I mentioned the library is that it does not seem to be at the hardware level since the tapes are obviously compressing on the test side of the world and we are using the same library. IBM, Sun, and Veritas are all involved right now (even though it is across HP, Sun, and Windows), but everyone is scratching their heads. Just trying to think outside the box now. Reneé Carlisle Sr. Systems Administrator 675 Basket Road Webster, NY 14580 Jer 29:11-13 585-216-0497 (w) 585-472-2360 (c) -Original Message- From: bob944 [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 18, 2006 11:20 AM To: veritas-bu@mailman.eng.auburn.edu Cc: Carlisle, D Renee Subject: RE: RE: [Veritas-bu] Hardware compression not working Date: Tue, 18 Apr 2006 10:42:58 -0400
