Re: RFC virtio-rng: fail to read sysfs of a busy device

2014-09-10 Thread Amos Kong
On Wed, Sep 10, 2014 at 02:49:38PM +0800, Amos Kong wrote: > On Wed, Sep 10, 2014 at 11:22:12AM +0530, Amit Shah wrote: > > On (Tue) 09 Sep 2014 [23:23:07], Amos Kong wrote: > > > (Resend to fix the subject) > > > > > > Hi Amit, Rusty > > > > > > RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=

Re: RFC virtio-rng: fail to read sysfs of a busy device

2014-09-09 Thread Amos Kong
On Wed, Sep 10, 2014 at 11:22:12AM +0530, Amit Shah wrote: > On (Tue) 09 Sep 2014 [23:23:07], Amos Kong wrote: > > (Resend to fix the subject) > > > > Hi Amit, Rusty > > > > RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1127062 > > steps: > > - Read random data by 'dd if=/dev/hwrng of=/dev/nu

Re: RFC virtio-rng: fail to read sysfs of a busy device

2014-09-09 Thread Amit Shah
On (Tue) 09 Sep 2014 [23:23:07], Amos Kong wrote: > (Resend to fix the subject) > > Hi Amit, Rusty > > RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1127062 > steps: > - Read random data by 'dd if=/dev/hwrng of=/dev/null' in guest > - check sysfs files in the same time, 'cat /sys/class/misc/h

RFC virtio-rng: fail to read sysfs of a busy device

2014-09-09 Thread Amos Kong
(Resend to fix the subject) Hi Amit, Rusty RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1127062 steps: - Read random data by 'dd if=/dev/hwrng of=/dev/null' in guest - check sysfs files in the same time, 'cat /sys/class/misc/hw_random/rng_*' Result: cat process will get stuck, it will retur