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тАО04-25-2010 06:55 AM
тАО04-25-2010 06:55 AM
Need help changing master drive on MSL4048
We have a 2-drive LTO4 MSL4048 fiber channel tape library in a possibly unique connection arrangement, and need some help in configuring it. We want to connect the two drives to two separate Linux hosts that are running in an active/standby redundancy configuration. Therefore we want the robotics LUN (i.e., the master drive) to be available to both servers, but they don't need it at the same time.
I am aware of library partitioning, and changing the master drive in the web RMI, but the hard (unique) part is that we need the active/standby failover to be AUTOMATED. It has to happen right away if the active server crashes at 2am on Sunday morning. Nobody's going to be there to pull up the web GUI; we need something that can be scripted.
I think we want an un-partitioned library where we can change the master drive (and reboot the library) via some command from the attached hosts, either in-band or out-of-band.
Please, is there some other way to change which of the library's drives hosts the library controller LUN? We looked at the telnet interface to "FLMON>", but that looks like it's only for monitoring, no configuration.
Thank you!
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тАО04-25-2010 08:22 AM
тАО04-25-2010 08:22 AM
Re: Need help changing master drive on MSL4048
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тАО04-25-2010 06:25 PM
тАО04-25-2010 06:25 PM
Re: Need help changing master drive on MSL4048
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тАО04-25-2010 08:03 PM
тАО04-25-2010 08:03 PM
Re: Need help changing master drive on MSL4048
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тАО04-26-2010 11:19 AM
тАО04-26-2010 11:19 AM
Re: Need help changing master drive on MSL4048
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тАО04-26-2010 11:54 AM
тАО04-26-2010 11:54 AM
Re: Need help changing master drive on MSL4048
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тАО04-28-2010 06:32 AM
тАО04-28-2010 06:32 AM
Re: Need help changing master drive on MSL4048
However, after that we get stuck with everything returning "501 Method Not implemented". At first we tried to POST the system_config page with drive host LUN change we wanted, and that returned 501. Then we thought it wasn't working because we needed to accept and use the library's session cookie using "loginlevel3.ssi", but that also sent back 501.
We are using Paros to proxy our HTTP transactions through our Firefox web browser in order to dump out the required HTTP requests and responses, so that we can incorporate them into our expect script. Our script should be sending the same requests as a real web browser, but we always get 501.
Please, is there some way to get some backend server feedback to understand why this is happening? Is there a secret key we can use to login to our library and look at it's internal logs and find out what it doesn't like about our requests? If that requires voiding the warranty on our unit, we're ok with that.
Thanks!
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тАО04-28-2010 11:05 AM
тАО04-28-2010 11:05 AM
Re: Need help changing master drive on MSL4048
With the little scripting I did I had to send commands to select the right page then send the configuration that needed set.
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тАО04-28-2010 01:23 PM
тАО04-28-2010 01:23 PM
Re: Need help changing master drive on MSL4048
1. expect script performs a 'spawn telnet 172.26.101.239 80' to connect to the 4048
2. expect script expects '^]'.\r\r\n from telnet login, and when successful, sends:
GET /login.ssi HTTP/1.1
Host: 172.26.101.239
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.3)
Gecko/20100401 Firefox/3.6.3 (.NET CLR 3.5.30729) Paros/3.2.13
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: http://172.26.101.239/logout.ssi
This is successful; we get the following response:
HTTP/1.1 200 Document Follows
Content-Type: text/html
Pragma: no-cache
Expires: 0
Cache-Control: no-cache
Content-Length: 2511
....stuff deleted....
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тАО04-30-2010 08:54 AM
тАО04-30-2010 08:54 AM
Re: Need help changing master drive on MSL4048
Perhaps I can further refine my questions:
1) My understanding is that when the loginlevel3.ssi is called from the browser, ├в Cookie: RMU_LEVEL-3; RMU_LOGIN=9999├в is sent to the server to request that the server create the session Cookie (RMU_SESSIONNO) and send back in the HTTP response. Can you confirm that my understanding is correct on this? Is it loginlevel3.ssi that creates and sends the Cookie back in its response?
2) If my understanding of the above is false, can you clarify the sequence by which the browser sends the cookie request/response
3) Which tool or third party product your team or colleague used to test the webserver in Java?