Re: [PATCH v2 1/5] nilfs-utils: cldconfig add an option to set minimal free blocks

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Hi Andreas,


I like the idea you're introducing; should lessen trashing by GC on my 
workstations.


On Tuesday 21 of January 2014 14:59:40 you wrote:
> With this option the user can specify the minimal number of free/dead
> blocks before a segment can be cleaned. This is a threshold for the GC
> to prevent needless moving of data. If there are less free blocks
> to gain from cleaning a segment than the specified number, the GC will
> abort and try again with a different segment.


Will your patches be smart enough to re-claim space if the only available free 
blocks are under threshold?


Scenario: FS is running out of free space, and the free blocks to be reclaimed 
are scattered through segments in small numbers. Several segments have a small 
number of free blocks, but in each segment the amount is under the threshold. 


Regards,
-- 
dexen deVries

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