On 08/31/2016 01:09 AM, Dan Williams wrote:
Can you post your exact reproduction steps? This test is not failing for me.
Sure. 1. make the guest kernel based on your tree, the top commit is 10d7902fa0e82b (dax: unmap/truncate on device shutdown) and the config file can be found in this thread. 2. add guest kernel command line: memmap=6G!10G 3: start the guest: x86_64-softmmu/qemu-system-x86_64 -machine pc,nvdimm --enable-kvm \ -smp 16 -m 32G,maxmem=100G,slots=100 /other/VMs/centos6.img -monitor stdio 4: in guest: mkfs.ext4 /dev/pmem0 mount -o dax /dev/pmem0 /mnt/pmem/ echo > /mnt/pmem/xxx ./mmap /mnt/pmem/xxx ./read /mnt/pmem/xxx The source code of mmap and read has been attached in this mail. Hopefully, you can detect the error triggered by read test. Thanks! _______________________________________________ Linux-nvdimm mailing list [email protected] https://lists.01.org/mailman/listinfo/linux-nvdimm
