From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Stancek Date: Fri, 21 Aug 2020 05:45:54 -0400 (EDT) Subject: [LTP] Fwd: [bug] mkfs.ext[23] hangs on loop device (aarch64, 5.8+) In-Reply-To: <1053136797.9144539.1597819054047.JavaMail.zimbra@redhat.com> References: <94883604.6936811.1596720770623.JavaMail.zimbra@redhat.com> <1929570063.6965184.1596736053281.JavaMail.zimbra@redhat.com> <20200818022905.GB2507595@T590> <1382840777.8967687.1597731548544.JavaMail.zimbra@redhat.com> <1053136797.9144539.1597819054047.JavaMail.zimbra@redhat.com> Message-ID: <277259633.9648166.1598003154755.JavaMail.zimbra@redhat.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ltp@lists.linux.it > > ----- Original Message ----- > > > I saw this kind io hang in ltp/fs_fill test reliably and the loop is > > > over image in tmpfs: > > > > > > https://lkml.org/lkml/2020/7/26/77 > > > > > > And I have verified that the following patch can fix the issue: > > > > > > https://lore.kernel.org/linux-block/bc5fa941-3b7c-f28e-dd46-1a1d6e5c40a8@kernel.dk/T/#t > > > > Thanks, I'll test your patch with my setup. > > I've seen no hangs over past ~24 hours with patch above. > > Thanks, > Jan fyi, in case you see sporadic I/O hangs, usually while running LTP tests that make use of loop device with recent upstream kernels: https://lore.kernel.org/linux-block/1929570063.6965184.1596736053281.JavaMail.zimbra@redhat.com/