On Fri, Aug 16, 2019 at 08:59:44PM +0000, Verma, Vishal L wrote: > Hi all, > > When running the 'ndctl' unit tests against 5.3-rc kernels, I noticed a > frequent failure of the 'mmap.sh' test [1][2]. > > [1]: https://github.com/pmem/ndctl/blob/master/test/mmap.sh > [2]: https://github.com/pmem/ndctl/blob/master/test/mmap.c > > But in trying to pare down the test further, I found that I can simply > reproduce the problem by: > > mkfs.xfs -f /dev/pmem0 > mount /dev/pmem0 /mnt/mem > > Where 'pmem0' is a legacy pmem namespace from reserved memory using the > memmap= command line option. (Specifically, I have this: > memmap=3G!6G,3G!9G ) > > The above mkfs/mount steps don't reproduce the problem a 100% of the > time, but it does happen on my qemu based setup over 75% of the times. > > The kernel log shows the following when the mount fails: Is it always that same message? I'll see if I can reproduce it, but I won't have that much memory to spare to create fake pmem, hope this also works with a single device and/or less memory..
