How are you presenting the flashcache'd device to Quadstor? Remember
flashcache gives you a DM (/dev/mapper/..) device, to use this with
Quadstor you either have to either build an LVM on top or create a loopback
SCSI device with LIO.
I've used this configuration myself before but I'm moving my systems off it
- I have had issues with the flashcache writeback not always flushing out
properly - so I am migrating to LSI CacheCade - its not as flexible but
On Monday, September 19, 2016 at 1:49:17 PM UTC+10, Zac Durham wrote:
> There's a few topics out there on this subject but I can't get my head
> around any of them....
> I have 3 x 2TB in software (mdadm) RAID5 (yeah, yeah I know) and a spare
> 120G SSD to use as cache. Currently I use flashcache to back the entire md
> device but do not realize any benefit in doing so (nor do I see any
> activity on the cache device when performing I/O against the array).
> Where is my approach flawed? I've also tried fronting the qs vdisks
> themselves with the SSD device to no avail either.
> Any help would be appreciated.
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