Hi there.
I have a host running 4 VMs using qcow2 storage on a ext4 fs over HDD.
Each VM has 3 qcow files (system, data and swap). I know I have an I/O
bottleneck.
I want to use bcache with an SSD to accelerate disk access but I´m not
sure where should I put bcache on storage stack.
Should I use bcache on host or in guests?
Just one bcache backing device for a single (ext4) filesystem with all
qcow files there, or different bcache and backing devices for each qcow2
file?
Right know, I prefer qcow2 over thin-lvm for storage, but i could change
my mind if thin-lvm is a much better combination for bcache.
What would be the best strategy for caching VMs storage ?
Any recommendation, please?
Regards and thank you
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