Re: [Libguestfs] [PATCH libnbd] ublk: Add new nbdublk program

On Wed, Aug 31, 2022 at 10:49:42PM +0800, Ming Lei wrote: > On Wed, Aug 31, 2022 at 5:41 PM Richard W.M. Jones <rjones(a)redhat.com&gt; wrote: > > > > On Wed, Aug 31, 2022 at 05:29:13PM +0800, Ming Lei wrote: > > > I can reproduce it, please try the top patch in aio branch, which fixed > > > hang in my reproducer with your test setting. > > > > > > https://github.com/ming1/ubdsrv/commits/aio > > > > (https://github.com/ming1/ubdsrv/commit/0a293b6eb7149dc5ee83e5d07d242accdb...) > > > > Yes, that seems to fix it. > > > > I have two loops, one git-cloning the kernel, and another copying the > > source of nbdkit and recompiling it, and they are both working without > > problems. > > BTW, aio branch has been merged to ublksrv/master, but the interface > of ublksrv_aio_submit_req() changed, so please sync with ublksrv. OK I have updated nbdublk: https://gitlab.com/rwmjones/libnbd/-/commits/nbdublk/ I have also added the changes to Fedora: https://koji.fedoraproject.org/koji/taskinfo?taskID=91468555 Please consider becoming a Fedora packager so you can comaintain this package.

On the subject of the kernel issue, I have been running builds and git clones in a loop for many hours on a local (virtio-scsi) filesystem, and I have *not* seen the kernel memory corruption problem happening. I will go back to testing ublk again to see if the kernel memory corruption bug is reproducible.