[Kernel-packages] [Bug 1775235] Re: Ubuntu 16.04 (4.4.0-127) hangs on boot with virtio-scsi MQ enabled

2018-06-13 Thread Felipe Franciosi
qs); + } else         req_vq = virtscsi_pick_vq(vscsi, tgt); return virtscsi_queuecommand(vscsi, req_vq, sc); Signed-off-by: Felipe Franciosi Please consider this a urgent fix as all of our customers which use Ubuntu 16.04 and have MQ enabled for better performance w

[Kernel-packages] [Bug 1775235] Re: Ubuntu 16.04 (4.4.0-127) hangs on boot with virtio-scsi MQ enabled

2018-06-08 Thread Felipe Franciosi
_vq(vscsi, tgt); return virtscsi_queuecommand(vscsi, req_vq, sc); Signed-off-by: Felipe Franciosi Please consider this a urgent fix as all of our customers which use Ubuntu 16.04 and have MQ enabled for better performance will be affected by your latest update. Our workaround is

[Kernel-packages] [Bug 1775235] Re: Ubuntu 16.04 (4.4.0-127) hangs on boot with virtio-scsi MQ enabled

2018-06-07 Thread Felipe Franciosi
(vscsi, tgt); Signed-off-by: Felipe Franciosi -8<- I'm happy to test it again if you'd like, but it should be functionally identical. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubun

[Kernel-packages] [Bug 1775235] Re: Ubuntu 16.04 (4.4.0-127) hangs on boot with virtio-scsi MQ enabled

2018-06-06 Thread Felipe Franciosi
_inc(&tgt->reqs); + + } else req_vq = virtscsi_pick_vq(vscsi, tgt); return virtscsi_queuecommand(vscsi, req_vq, sc); Signed-off-by: Felipe Franciosi - - Please consider this a urgent fix as all of our customers which use Ubuntu 16.04 and have MQ enabled for

[Kernel-packages] [Bug 1775235] Re: Ubuntu 16.04 (4.4.0-127) hangs on boot with virtio-scsi MQ enabled

2018-06-05 Thread Felipe Franciosi
atomic_inc(&tgt->reqs); - } else + else req_vq = virtscsi_pick_vq(vscsi, tgt); return virtscsi_queuecommand(vscsi, req_vq, sc); Signed-off-by: Felipe Franciosi Please consider this a urgent fix as all of our customers which use Ubuntu 16.0

[Kernel-packages] [Bug 1775235] [NEW] Ubuntu 16.04 (4.4.0-127) hangs on boot with virtio-scsi MQ enabled

2018-06-05 Thread Felipe Franciosi
host_use_blk_mq(sh)) { + if (shost_use_blk_mq(sh)) req_vq = virtscsi_pick_vq_mq(vscsi, sc); - atomic_inc(&tgt->reqs); - } else + else req_vq = virtscsi_pick_vq(vscsi, tgt); return virtscsi_queuecommand(vscsi, req_vq, sc); Signed

[Kernel-packages] [Bug 1319003] Re: Storage performance regression when Xen backend lacks persistent-grants support

2014-05-31 Thread Felipe Franciosi
** Attachment removed: "Saucy x86_64 without the backports" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1319003/+attachment/4123531/+files/saucy.png ** Attachment removed: "Saucy x86_64 with the backports" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1319003/+attachment/41

[Kernel-packages] [Bug 1319003] Re: Storage performance regression when Xen backend lacks persistent-grants support

2014-05-31 Thread Felipe Franciosi
** Attachment added: "Saucy x86_64 guests without the backports" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1319003/+attachment/4123555/+files/saucy64.png -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https

[Kernel-packages] [Bug 1319003] Re: Storage performance regression when Xen backend lacks persistent-grants support

2014-05-31 Thread Felipe Franciosi
** Attachment added: "Saucy x86_64 without the backports" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1319003/+attachment/4123531/+files/saucy.png -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.l

[Kernel-packages] [Bug 1319003] Re: Storage performance regression when Xen backend lacks persistent-grants support

2014-05-31 Thread Felipe Franciosi
** Attachment added: "Saucy x86_64 with the backports" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1319003/+attachment/4123532/+files/saucy-backports.png -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https:/

[Kernel-packages] [Bug 1319003] Re: Storage performance regression when Xen backend lacks persistent-grants support

2014-05-31 Thread Felipe Franciosi
Joseph, apologies for the delay on this. I have finally managed to retest the kernel you have provided. For reference, I added the following disks to my server: * 4 x Micron P320 * 2 x Intel 910s (presented as 4 separate SCSI devices) * 1 x Fusion-io ioDrive2 I created 10 LVM Logical Volumes on e

[Kernel-packages] [Bug 1319003] Re: Storage performance regression when Xen backend lacks persistent-grants support

2014-05-14 Thread Felipe Franciosi
Thanks for the prompt attention to this matter. My environment for testing is currently busy, but I should be able to get access by the end of next week (23/May). I'll comment as soon as I have some results. -- You received this bug notification because you are a member of Kernel Packages, which

[Kernel-packages] [Bug 1319003] Re: Storage performance regression when Xen backend lacks persistent-grants support

2014-05-13 Thread Felipe Franciosi
I am unable to collect logs with apport-collect as I do not have a set of Ubuntu guests setup for repro at the moment. I also believe logs are not relevant for this particular case. ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification becaus

[Kernel-packages] [Bug 1319003] Re: Storage performance regression when Xen backend lacks persistent-grants support

2014-05-13 Thread Felipe Franciosi
** Description changed: Description of problem: When used as a Xen guest, Ubuntu 13.10 may be slower than older releases in terms of storage performance. This is due to the persistent-grants feature introduced in xen-blkfront on the Linux Kernel 3.8 series. From 3.8 to 3.12 (inclusive), xen