On Tue, Apr 10, 2018 at 04:43:12PM +0200, Zdenek Kabelac wrote: > Dne 10.4.2018 v 16:00 Richard W.M. Jones napsal(a): > >On Tue, Apr 10, 2018 at 09:47:30AM +0100, Richard W.M. Jones wrote: > >>Recently in Fedora something changed that stops us from creating small > >>LVs for testing. > >> > >>An example failure with a 64 MB partitioned disk: > >> > >># parted -s -- /dev/sda mklabel msdos mkpart primary 128s -128s > >>Warning: The resulting partition is not properly aligned for best performance: 128s % 65535s != 0s > >># lvm pvcreate --force /dev/sda1 > >> /dev/sda1: Data alignment must not exceed device size. > >> Format-specific initialisation of physical volume /dev/sda1 failed. > >> Failed to setup physical volume "/dev/sda1". > > > >Interestingly the alignment properties of the virtio-scsi virtual disk > >has changed. On the working system: > > > >==> /sys/block/sda/queue/minimum_io_size <== > >512 > > > >==> /sys/block/sda/queue/optimal_io_size <== > >0 > > > >On the new / broken system: > > > >==> /sys/block/sda/queue/minimum_io_size <== > >33553920 > > > >==> /sys/block/sda/queue/optimal_io_size <== > >0 > > > >(all other settings were the same). I suppose this accounts for it, > >and it could therefore be a problem with qemu rather than LVM. > > > >Working: qemu-2.11.0-4.fc28.x86_64 > >Broken: qemu-2.12.0-0.5.rc1.fc29.x86_64 > > > >Alasdair Kergon asked me to run the lvm command with -vvvv and I've > >attached those results. > > > Hi > > Could you please retest first with official final release of 4.16 kernel. Same thing with 4.16.0-300.fc28.x86_64: ><rescue> cat /sys/block/sda/queue/minimum_io_size 33553920 ><rescue> uname -a Linux (none) 4.16.0-300.fc28.x86_64 #1 SMP Tue Apr 3 03:44:37 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux I believe the faulty min/max macros were added after 4.16.0. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://people.redhat.com/~rjones/virt-df/ _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
