[volunteergrid2-l] Object Health

[Brad Rupp]

The tahoe-dev folks are asking if servers on the grid were doing 
expiration.  I don't think so, but I thought I would ask to make sure.

I assume all nodes on VG2 are still configured with 365 day leases. 
Does anyone have nodes that don't have this?

Thanks,

Brad

On 7/5/2012 4:36 PM, Shawn Willden wrote:
> I think this is a question for tahoe-dev.
>
> On Thu, Jul 5, 2012 at 4:15 PM, Brad Rupp <bradrupp at gmail.com
> <mailto:bradrupp at gmail.com>> wrote:
>
>     Greetings VG2 friends,
>
>     I have a question about object health in Tahoe.  If I run two
>     repairs, one right after another, the second repair quite often has
>     unhealthy objects.  I have not backed up any files to the grid
>     between these two repairs.  I would expect the second repair to not
>     have any unhealthy objects.
>
>     I am running the following command:
>
>     ~/tahoe/bin/tahoe deep-check --repair --verbose my-alias:
>
>     The output from repair #1:
>
>     repair successful
>     done: 11801 objects checked
>       pre-repair: 11725 healthy, 76 unhealthy
>       76 repairs attempted, 76 successful, 0 failed
>       post-repair: 11801 healthy, 0 unhealthy
>
>     The output from repair #2:
>     done: 11801 objects checked
>       pre-repair: 11789 healthy, 12 unhealthy
>       12 repairs attempted, 11 successful, 1 failed
>       post-repair: 11800 healthy, 1 unhealthy
>
>     As you can see, the first repair found and fixed 76 unhealthy
>     objects. The second repair, approximately 12 hours later, found 12
>     unhealthy objects and fixed 11 of them.
>
>     Why would the second repair find 12 unhealthy objects?  I would have
>     expected it to find 0 unhealthy objects given that the first repair
>     was performed only 12 hours earlier.
>
>     This is just one repair run out of many.  I can consistently get
>     similar results.  I guess the deeper question is are the objects
>     stored in Tahoe safe?  Or when I really need them due to a
>     catastrophic event will I lose a handful of objects due to this?
>
>     Regards,
>
>     Brad
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> --
> Shawn
>
>
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