On 20.08.25 06:10, Gao Xiang wrote:
(try to Cc David and Paolo for some discussion...)
Hi David and Paolo,
Hi!
If possible, could you share some thoughts about this, because
currently each `memory-backend-file` has their own page cache
on the host, but if QEMU can provide one nvdimm device backed
by multiple files, so that EROFS can share memory in finer
layer granularity on the host. (we don't need to attach so
many devices, because some container images can be dozens of
layers.)
Sounds a bit like what virtio-fs does?
Without further investigatation, I wonder which direction is
better:
1) one memory-backend-file backed by multiple files;
No.
2) nvdimm, virtio-pmem, .. backed by multiple
`memory-backend-file`s..
Better.
Currently I don't have extra slot to look into the QEMU codebase,
but if the idea is acceptable, I will try to work on this later.
But is this really better than just using many devices?
--
Cheers
David / dhildenb
