[Pvfs2-developers] fs.conf integrity checks

[Rob Ross]

80K clients...

Murali Vilayannur wrote:
> Hi Rob,
> 
>> Quick uneducated question: this isn't automatically done on *every*
>> mount, right?
> 
> yeah, it is done automatically on every *new* mount upcall. Is this a
> problem? (I changed the code to  this behavior y'day night)
> thanks,
> Murali
> 
>> Rob
>>
>> Phil Carns wrote:
>>> Murali Vilayannur wrote:
>>>> Hi All,
>>>> Just a heads-up..
>>>> I have checked in a patch that will allow the pvfs2-ping utility to
>>>> verify
>>>> if the fs.conf files obtained from all the servers for a given fsid
>>>> is the same by checking against their crypto check sum (SHA1 right now)
>>>> Please let me know if you have any serious objections to doing it the way
>>>> I have done right now..
>>>> Thanks,
>>>> Murali
>>> Hi Murali,
>>>
>>> This is integrated into fs_add so that the test is performed
>>> automatically at mount time now, correct?  We had done something similar
>>> in the pvfs2-validate utility, but I think it will be good to have it
>>> integrated into the normal mount process.
>>>
>>> I haven't looked at the code, but I have a few functionality comments
>>> after playing with it this morning:
>>>
>>> - Is it possible to filter whitespace and comments out of the config
>>> file before gathering whatever information you need for comparison, or
>>> do you want to enforce that the fs.conf files be verbatim identical?
>>>
>>> - I ran one test where a server had an extra line in its configuration
>>> file, and that showed up fine as a mount error with information in the
>>> log files showing the size difference.  However, I ran another test
>>> where I just changed the value of UnexpectedRequests from "50" to "51",
>>> and this did not generate any error.  Is there anything in particular
>>> you have to do to enable the checksum tests in addition to the size tests?
>>>
>>> -Phil
>>> _______________________________________________
>>> Pvfs2-developers mailing list
>>> Pvfs2-developers at beowulf-underground.org
>>> http://www.beowulf-underground.org/mailman/listinfo/pvfs2-developers
>>>
>>
>