Xen users - May 2011 - XCP 1.0: There was an error while attempting to make a request from the logical volume.

Hi,

  Run into a strange issue. My iscsi storage device is reporting "Error:
Scanning SR ''VM Store 01'' - There was an error while
attempting to make a
request from the logical volume. The request must come from the master."
Also getting lots of error messages in my logs: xenserver-1 xapi:
[error|xenserver-1|1353 unix-RPC|SR.scan R:bd775cfb94bc|xapi] Caught error
scanning SR (VM Store 01): SR_BACKEND_FAILURE_58: [ ; Logical Volume request
must come from master;  ].

  When looking at "xe pbd-list" it shows it as "SRmaster:
false;". How do I
reset this so the master server is master? I am currently unable to remove
the SR or do any thing to it. I''ve attempted rebooting, switching
master.
Does not change it.

Any help would be much appreciated!
Richard Cernava


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>
> Hi,
>
>   Run into a strange issue. My iscsi storage device is reporting
"Error:
> Scanning SR ''VM Store 01'' - There was an error while
attempting to make a
> request from the logical volume. The request must come from the
master."
> Also getting lots of error messages in my logs: xenserver-1 xapi:
> [error|xenserver-1|1353 unix-RPC|SR.scan R:bd775cfb94bc|xapi] Caught error
> scanning SR (VM Store 01): SR_BACKEND_FAILURE_58: [ ; Logical Volume
request
> must come from master;  ].
>
>   When looking at "xe pbd-list" it shows it as "SRmaster:
false;". How do I
> reset this so the master server is master? I am currently unable to remove
> the SR or do any thing to it. I''ve attempted rebooting, switching
master.
> Does not change it.
>
> Any help would be much appreciated!
> Richard Cernava
>
With further testing I''ve found if I return the master to the original
master server the problem resolvs, but I am unable to nomiante a new master
with out it returning. I found a post on the Citrix forum that looks like my
problem : http://forums.citrix.com/thread.jspa?messageID=1514793&tstart=0

I''m not sure how to apply the patch mentioned on XCP. Lines 818-819
don''t
seem to mention SRmaster.


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On Tue, May 24, 2011 at 10:15 AM, Richad Cernava <
richard@anypresentations.com> wrote:
>    Hi,
>>
>>   Run into a strange issue. My iscsi storage device is reporting
"Error:
>> Scanning SR ''VM Store 01'' - There was an error while
attempting to make a
>> request from the logical volume. The request must come from the
master."
>> Also getting lots of error messages in my logs: xenserver-1 xapi:
>> [error|xenserver-1|1353 unix-RPC|SR.scan R:bd775cfb94bc|xapi] Caught
error
>> scanning SR (VM Store 01): SR_BACKEND_FAILURE_58: [ ; Logical Volume
request
>> must come from master;  ].
>>
>>   When looking at "xe pbd-list" it shows it as
"SRmaster: false;". How do
>> I reset this so the master server is master? I am currently unable to
remove
>> the SR or do any thing to it. I''ve attempted rebooting,
switching master.
>> Does not change it.
>>
>> Any help would be much appreciated!
>> Richard Cernava
>>
>
> With further testing I''ve found if I return the master to the
original
> master server the problem resolvs, but I am unable to nomiante a new master
> with out it returning. I found a post on the Citrix forum that looks like
my
> problem :
http://forums.citrix.com/thread.jspa?messageID=1514793&tstart=0
>
> I''m not sure how to apply the patch mentioned on XCP. Lines
818-819 don''t
> seem to mention SRmaster.
>
>
>
After further testing I''ve come to the conclustion something was
corrupted
on the slave. I resolved the problem by removing the slave from the pool and
readding it. Is there any other way to resyc the pool database with out
removing and readding? I attempted "pool-sync-database", but that was
inaffective.


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