On 05/16/2016 11:04 PM, Richard W.M. Jones wrote:
I'm playing with ext4 and DAX.
Thanks for your try, Rich! :)
I'm using: -object memory-backend-file,id=mem1,share,mem-path=/var/tmp/pmem,size=4G \ -device nvdimm,memdev=mem1,id=nv1 where /var/tmp/pmem is a 4 GB ext4 filesystem image (no partition table). I can mount this in the guest using: mount -o dax /dev/pmem0 /mnt and everything appears to work. I read in the mailing list that the pmem file has some internal structure for storing config data, stored in the last 128 KB of the file. Is that still the case?
The patchset supporting label data has not been merged yet so currently there is no label data for vNVDIMM device.
