Re: Forming drives together into a cache hierarchy
On 2009-09-02 05:30, Paul Richards wrote:
Is there a way to combine a large slow drive with a fast small drive
in such a way that the faster drive simply becomes a cache for the
I imagine a computer where I'd like to have a small fast SSD and a
large but slow spinning disk. I'd like to put the two block devices
together so that I'm presented with a single logical block device,
where the operating system is using the SSD as a cache (either
inclusive or exclusive, write-though or otherwise) of the spinning
I'd think about selling the SSD and either buy more RAM or a SCSI
controller and a 10K RPM drive.
Is there some magic in LVM that can do this?
If there is nothing at the block device level can it be done at the
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