NVCache for journal
Posted Mar 23, 2007 3:56 UTC (Fri) by sweikart
Parent article: The 2007 Linux Storage and File Systems Workshop
> Also, a file system can use the NVCache to store its journal ...
This seems like a great approach. If the NVCache could appear as
a block device that could be partitioned, filesystems that use jbd
(like ext3) could use it right away (a smaller NVCache partition for
read-mostly filesystems like /usr, a larger NVCache partition for
write-mostly filesystems like /var).
I assume journals are treated as ring buffers for writing, which
is the right access pattern for prolonging the life of flash.
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