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тАО10-03-2005 11:23 PM
тАО10-03-2005 11:23 PM
Data Protector Problem on Linux
I have a rather irritating problem to say the least... I installed DP 5.5 locally on a computer running RHEL4. I have SAN connected tape drives and at first DP could detect them and use them (although devbra -dev took 5mins+ to complete) but then it stopped working. DP couldn't detect any tape drives even if they were available to the OS. After re-installing DP, pulling hair, trying this and that, and pulling some more hair, I tried re-installing and then upgrading (patching) from a Solaris installation server we have on our network.
Finally DP could detect the drives again but devbra -dev still takes a LONG time to complete.
Has anyone here had the same or similar problem?
(HP OpenView Storage Data Protector A.05.50: DEVBRA, internal build PHSS_32842/PHSS_32843/DPSOL_00151, built on Fri Jul 1 11:23:35 2005)
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тАО10-04-2005 12:00 AM
тАО10-04-2005 12:00 AM
Re: Data Protector Problem on Linux
As per support matrix (attached) RHEL 4.0 is supported as Disk agent only. MA connot be loaded. Posibly some new patches enables this. Read the patch texts.
Regds
TT
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тАО10-04-2005 01:09 AM
тАО10-04-2005 01:09 AM
Re: Data Protector Problem on Linux
I am afraid you are incorrect.
By applying patches:
PHSS_32842 - HP-UX 11.x (PA) CM / IS
PHSS_32843 - HP-UX 11.23 (IPF) CM / IS
DPSOL_00151 - Solaris 2.x CM / IS
you can use the media agent on RHEL4.
I have done so but I still have this problem.
http://www.openview.com/products/storage_data_protector/device_matrices/Platform_Integrtn_SptMtx_DP55.pdf
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тАО10-04-2005 04:23 AM
тАО10-04-2005 04:23 AM
Re: Data Protector Problem on Linux
devbra -dev -debug 1-500 scan.txt
then look for *scan.txt in /tmp.
Most likely it's trying an inquiry against every lun number on the HBA, which if waiting for a timeout everytime, could take a very long time.
Is there a way to limit the allowed LUN range on the HBA to limit the time it takes to scan the SAN?
Thanks,
Scott
HP Support
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тАО10-04-2005 05:58 AM
тАО10-04-2005 05:58 AM
Re: Data Protector Problem on Linux
Thanks for the info... here is a snippet from the log....
...
[ 10] AddToPhysicalDeviceList_File: checking token "/dev/nst0" read from "/usr/omni/.ls"
[199] 2005-10-04 16:50:47 ("ma/devtool/devlist_file.c /main/dp55/dp55_fix/1":455) A.05.50 bPHSS_32842/PHSS_32843/DPSOL_00151
[199] ===>> (4) CreatePhysicalDevice {
[199]
[199] 2005-10-04 16:50:47 ("ma/devtool/devlist_file.c /main/dp55/dp55_fix/1":359) A.05.50 bPHSS_32842/PHSS_32843/DPSOL_00151
[199] ===>> (5) DebugPhysicalDevice {
[199]
...
It reads /dev/nst0 ok but once it gets to nst1 funny things happen... (I have the HBA zoned with 4 tape drives)
...
[ 10] AddToPhysicalDeviceList_File: checking token "/dev/nst1" read from "/usr/omni/.ls"
[199] 2005-10-04 16:50:47 ("ma/devtool/devlist_file.c /main/dp55/dp55_fix/1":455) A.05.50 bPHSS_32842/PHSS_32843/DPSOL_00151
[199] ===>> (4) CreatePhysicalDevice {
[199]
[199] 2005-10-04 16:52:48 ("ma/devtool/devlist_file.c /main/dp55/dp55_fix/1":359) A.05.50 bPHSS_32842/PHSS_32843/DPSOL_00151
[199] ===>> (5) DebugPhysicalDevice {
[199]
...
It hangs at "CreatePhysicalDevice" for 2 mins 1 sec per nstXX device after that.
I have another machine running Red Hat Linux 8 or 9, can't remember (kernel 2.4.9)
The whole thing takes a second on that machine. And that one is zoned with 8 tape drives...
Any ideas?
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тАО10-04-2005 06:31 AM
тАО10-04-2005 06:31 AM
Re: Data Protector Problem on Linux
You have to run the command 'hp_rescan -a' in order to make the RHEL4 detect the library.
I ended up by adding this command in a startup script. Still do not now why the library is not detected by default after a sustem reboot.
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тАО10-04-2005 09:38 AM
тАО10-04-2005 09:38 AM
Re: Data Protector Problem on Linux
I'm afraid that's not the problem as I can see the devices in /proc/scsi/scsi and DP detects them in the end... It just takes 6 minutes...
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тАО10-04-2005 11:09 AM
тАО10-04-2005 11:09 AM
Re: Data Protector Problem on Linux
Log a support call and point out QXCR1000279713. The text all talks about SLES 9, even after they were told to verify this on SLES and RHEL.
So log a support call and remind them that this issue is on RHEL 4 as well. Looks like India just finished a fix candidate last week, so be more than happy to test it out on RHEL 4 for them. :-)
Thanks,
Scott
HP Support