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[CalculateBalanceRatio] Error calculating ratio using balancer 'Drive Usage Limiter' (...). Arithmetic operation resulted in an overflow.


Jonibhoni
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Hi there, glad to be part of the Covecube community now! :D

I've just yesterday set up a new pool with all my (scanner checked) spare drives, moved all my data to it and configured some balancing and file placement rules. Nothing too awkward, though, I guess.

Now I wanted to eventually empty some drives that were just in there temporarily, though not yet remove them from the pool. So I used the options on the "Drive Usage Limiter" plugin to set some of my drives to neither contain (new nor existing?) duplicated nor unduplicated data:

grafik.png.883abecd7f1737a37d1f27da8d0dd185.png

The settings worked in that a "real time file placement limit" (I think that's what it is called?) was set for the drive:

grafik.png.bd23595bf0dd7aa93ff3fa552e9cab80.png

But unfortunately, no action whatsovever made the pool actually fulfill that limit! The "Pool Organization" shows up as a long green bar, when I hover it, it says:

grafik.png.46bb575e0ae667209d649a661030eee5.png

Whenever I click on "Manage Pool" -> "Re-measure..." or click the pool organization arrow -> "Re-balance" or even "Troubleshooting" -> "Recheck duplication" ... all ends up with some processing and stopping in that condition.

So I took a look into the error log and found that all those operations are stopped by something like this:

Quote

1:46:09.6: Warning: 0 : [CalculateBalanceRatio] Error calculating ratio using balancer 'Drive Usage Limiter' (58d9a4e7-5852-4276-abd3-a5bc74409c4e). Arithmetic operation resulted in an overflow.
1:48:18.3: Information: 0 : [Rebalance] Setting Background I/O priority
1:48:18.3: Information: 0 : [FsControl] Set overall pool mode: PoolModeNoMeasure (lastKey=Rebalance, pool=ed627c77-b363-421d-92ca-ecead537c314)
1:48:18.3: Warning: 0 : [Rebalance] Error re-balancing using balancer 'Drive Usage Limiter' (58d9a4e7-5852-4276-abd3-a5bc74409c4e). Arithmetic operation resulted in an overflow.
1:48:18.3: Information: 0 : [Rebalance] Balancing file placement...
1:48:19.9: Information: 0 : [Rebalance] Not enabling background I/O priority
1:49:43.7: Warning: 0 : [FilePatternMover] Error moving '\\?\Volume{26e6ee7e-e724-458c-b0ac-01e84942d31b}\PoolPart.5e99fc82-874b-4070-927a-6059ac77a1f6\Cloudspeicher\bhownCloud\.sync_65a815de4953.db' to '\\?\Volume{2ce00e45-e046-40a6-ab2c-07ffdc84a26b}\PoolPart.d8d6f624-24d2-4772-947f-a2af282e9cf9\Cloudspeicher\bhownCloud\.sync_65a815de4953.db'. Die Oplock-Anforderung wurde verweigert
1:49:43.7: Warning: 0 : [FilePatternMover] Error moving '\\?\Volume{26e6ee7e-e724-458c-b0ac-01e84942d31b}\PoolPart.5e99fc82-874b-4070-927a-6059ac77a1f6\Cloudspeicher\ownCloudISE\.sync_6874dfbffd0c.db' to '\\?\Volume{2ce00e45-e046-40a6-ab2c-07ffdc84a26b}\PoolPart.d8d6f624-24d2-4772-947f-a2af282e9cf9\Cloudspeicher\ownCloudISE\.sync_6874dfbffd0c.db'. Die Oplock-Anforderung wurde verweigert
1:49:51.8: Warning: 0 : [Rebalance] Error re-balancing using balancer 'Drive Usage Limiter' (58d9a4e7-5852-4276-abd3-a5bc74409c4e). Arithmetic operation resulted in an overflow.
1:49:51.8: Information: 0 : [Rebalance] Balancing pool parts...
1:49:51.8: Information: 0 : [FsControl] Set overall pool mode: PoolModeNormal (lastKey=Rebalance, pool=ed627c77-b363-421d-92ca-ecead537c314)
1:49:51.8: Warning: 0 : [CalculateBalanceRatio] Error calculating ratio using balancer 'Drive Usage Limiter' (58d9a4e7-5852-4276-abd3-a5bc74409c4e). Arithmetic operation resulted in an overflow.

(Colored highlights by me.)

I guess that's a bug?

Cheers,
Jonas

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