Networker

Re: [Networker] Jukebox control port using persistent names

2012-10-25 15:47:41
Subject: Re: [Networker] Jukebox control port using persistent names
From: Tim Mooney <Tim.Mooney AT NDSU DOT EDU>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Thu, 25 Oct 2012 14:47:16 -0500
In regard to: Re: [Networker] Jukebox control port using persistent names,...:

Yaron,

Thank you!  I was hoping it would be that simple.
I've done exactly what Yaron has suggested on the rare occasion when
either of our servers get rebooted; carefully edit the res file with
NetWorker shut down.

Since you raised the question, though...

Are you using persistent binding for the tape drives themselves?  I've
resisted it so far, because I hate the lengthy device names that udev
is generating, that I would have to type when doing anything drive-related
with nsrjb/mt/mtx.

Anyone on the list come up with udev rules that bind tape drives to
persistent but less onerous device names?

Tim

On Oct 25, 2012, at 2:48 PM, Yaron Zabary <yaron AT aristo.tau.ac DOT il> wrote:

 That's the relevant part from the res file. Just shutdown Networker and edit 
the res file to point at the right by-id device.

application key:;
application name:;
auto clean: Yes;
auto media management: No;
autodetect id: <OVERLANDNEO Series      0636 at SCSI Bus 3 Target 1 LUN 1>;
available slots: 1-499;
bar code reader: Yes;
cleaning delay: 60;
cleaning slots: 500-500;
comment:;
control port: /dev/tape/by-id/scsi-200900de794120009;

[[email protected] nsrdb]# ls -l /dev/tape/by-id/
total 0
lrwxrwxrwx 1 root root  9 Oct 14 17:04 scsi-200900de794120009 -> ../../sg7
lrwxrwxrwx 1 root root  9 Oct 14 17:04 scsi-3500110a00132d026 -> ../../st3
lrwxrwxrwx 1 root root 10 Oct 14 17:04 scsi-3500110a00132d026-nst -> ../../nst3
lrwxrwxrwx 1 root root  9 Oct 14 17:04 scsi-3500110a00132d0a2 -> ../../st2
lrwxrwxrwx 1 root root 10 Oct 14 17:04 scsi-3500110a00132d0a2-nst -> ../../nst2
lrwxrwxrwx 1 root root  9 Oct 14 17:04 scsi-3500110a00132d17e -> ../../st1
lrwxrwxrwx 1 root root 10 Oct 14 17:04 scsi-3500110a00132d17e-nst -> ../../nst1
lrwxrwxrwx 1 root root  9 Oct 14 17:04 scsi-350060b0000b8b366 -> ../../st0
lrwxrwxrwx 1 root root 10 Oct 14 17:04 scsi-350060b0000b8b366-nst -> ../../nst0
[[email protected] nsrdb]# inquire
[email protected]:HP      LOGICAL VOLUME  5.14|Disk, /dev/sg1
                                           S/N: 5001438020EC2A30
                                           WWNN=600508B1001CDD1754BFA46ABABF5FA6
[email protected]:HP      P410i           5.14|(Unknown Device Type c), /dev/sg0
                                           S/N: 5001438020EC2A30
                                           VENN=5001438020EC2A30
[email protected]:hp      DVD A  DS8A5LH  1HE4|CD-ROM, /dev/sg2
[email protected]:HP      Ultrium 4-SCSI  H63H|Tape, /dev/nst0
                                           S/N: HU175112C3
                                           ATNN=HP      Ultrium 4-SCSI  
HU175112C3
                                           WWNN=50060B0000B8B366
                                           WWPN=50060B0000B8B364
                                           WW2N=50060B0000B8B366
                                           PORT=00000001
[email protected]:HP      Ultrium 4-SCSI  H63H|Tape, /dev/nst1
                                           S/N: HU195185CF
                                           ATNN=HP      Ultrium 4-SCSI  
HU195185CF
                                           WWNN=500110A00132D17E
                                           WWPN=500110A00132D17C
                                           WW2N=500110A00132D17E
                                           PORT=00000001
[email protected]:HP      Ultrium 4-SCSI  H63H|Tape, /dev/nst2
                                           S/N: HU195185D3
                                           ATNN=HP      Ultrium 4-SCSI  
HU195185D3
                                           WWNN=500110A00132D0A2
                                           WWPN=500110A00132D0A0
                                           WW2N=500110A00132D0A2
                                           PORT=00000001
[email protected]:HP      Ultrium 4-SCSI  H63H|Tape, /dev/nst3
                                           S/N: HU195185CK
                                           ATNN=HP      Ultrium 4-SCSI  
HU195185CK
                                           WWNN=500110A00132D026
                                           WWPN=500110A00132D024
                                           WW2N=500110A00132D026
                                           PORT=00000001
[email protected]:OVERLANDNEO Series      0636|Autochanger (Jukebox), /dev/sg7
                                           S/N: 1R52100009
                                           ATNN=OVERLANDNEO Series      
1R52100009
                                           IENN=00900DE794120009
                                           PORT=00000001


On 10/25/2012 08:38 PM, Francis Swasey wrote:
Has anyone created a jukebox using persistent names yet?  I have a jukebox 
attached to my linux system, that since I upgraded to RHEL6 the order the HBAs 
initialize is not consistent, so the scsi host number changes from boot to boot.

I'd delete the jukebox and recreate it using persistent names, but with 1400 
tapes in the blasted thing it would take two or three days for the obligatory 
first inventory, and I can't afford that much downtime.

I've had an issue open with EMC since Monday, but so far, the people I am 
talking too just keep reiterating that I need to set up persistent binding.  
Even though I keep explaining to them that it is not the order the devices 
attached to the HBA are initialized but rather the actual order the HBAs are 
getting initialized, and persistent binding is not going to help me with that 
(or else I completely misunderstand persistent binding).  I keep asking them 
what is the control port value in a jukebox that is set up using persistent 
naming.  They don't have an answer.  /sigh

So, if any of you have created a jukebox using the persistent naming option, would you be 
kind enough to tell me if the control port defined for the jukebox is something other 
than "[email protected]"?

Thanks,
-- Frank


--

-- Yaron.
--
Tim Mooney                                             Tim.Mooney AT ndsu DOT 
edu
Enterprise Computing & Infrastructure                  701-231-1076 (Voice)
Room 242-J6, IACC Building                             701-231-8541 (Fax)
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