Hey all, We've been on 4.9 for some time now, and while it's still supported, I think it's time to start thinking about upgrading, and I'd like input from the community about which version to move up to. 4.19 has been out for almost 5 months now. It will include PVH domU support, and PVH dom0 support in what _is believed_ to be the final form; so when the Virt SIG moves to a version of Xen that supports PVH dom0, the kernel will already be in place with no need to upgrade. The other option would be to move to 4.14: Probably more stable (as it's been out for over a year now), but doesn't have either PVH domU or PVH dom0 support. I'd suggest 4.19. Any other opinions? -George
On Thu, Mar 7, 2019 at 9:42 AM George Dunlap <dunlapg at umich.edu> wrote:> > Hey all, > > We've been on 4.9 for some time now, and while it's still supported, I > think it's time to start thinking about upgrading, and I'd like input > from the community about which version to move up to. > > 4.19 has been out for almost 5 months now. It will include PVH domU > support, and PVH dom0 support in what _is believed_ to be the final > form; so when the Virt SIG moves to a version of Xen that supports PVH > dom0, the kernel will already be in place with no need to upgrade. > > The other option would be to move to 4.14: Probably more stable (as > it's been out for over a year now), but doesn't have either PVH domU > or PVH dom0 support. > > I'd suggest 4.19. Any other opinions? > > -GeorgeYou may also want to consider each version's EOL: 4.9 Jan, 2023 4.14 Jan, 2020 4.19 Dec, 2020 Akemi
On 3/7/19 10:30 AM, Akemi Yagi wrote:> On Thu, Mar 7, 2019 at 9:42 AM George Dunlap <dunlapg at umich.edu> wrote: >> >> Hey all, >> >> We've been on 4.9 for some time now, and while it's still supported, I >> think it's time to start thinking about upgrading, and I'd like input >> from the community about which version to move up to. >> >> 4.19 has been out for almost 5 months now. It will include PVH domU >> support, and PVH dom0 support in what _is believed_ to be the final >> form; so when the Virt SIG moves to a version of Xen that supports PVH >> dom0, the kernel will already be in place with no need to upgrade. >> >> The other option would be to move to 4.14: Probably more stable (as >> it's been out for over a year now), but doesn't have either PVH domU >> or PVH dom0 support. >> >> I'd suggest 4.19. Any other opinions? >> >> -George > > You may also want to consider each version's EOL: > > 4.9 Jan, 2023 > 4.14 Jan, 2020 > 4.19 Dec, 2020Regardless of EOL date, I think it's worth trying to upgrade when Xen has stable PVH dom0 support. I am pretty sure historically that there have been difficulties backporting some of the side channel mitigations as they can be quite invasive. That may be another reason to upgrade sooner rather than later. --Sarah
On Friday, 8 March 2019 4:42:13 AM AEDT George Dunlap wrote:> I'd suggest 4.19.+1 -- Steven Haigh ? netwiz at crc.id.au ? https://www.crc.id.au ? +61 (3) 9001 6090 ? 0412 935 897 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 833 bytes Desc: This is a digitally signed message part. URL: <http://lists.centos.org/pipermail/centos-virt/attachments/20190308/225b182f/attachment-0002.sig>
Hi, On Thu, Mar 07, 2019 at 05:42:13PM +0000, George Dunlap wrote:> Hey all, > > We've been on 4.9 for some time now, and while it's still supported, I > think it's time to start thinking about upgrading, and I'd like input > from the community about which version to move up to. >First let's get the current 4.9.16x PR merged and kernel update pushed out. It should fix the tty/ldisc problem causing crashes in dom0.> 4.19 has been out for almost 5 months now. It will include PVH domU > support, and PVH dom0 support in what _is believed_ to be the final > form; so when the Virt SIG moves to a version of Xen that supports PVH > dom0, the kernel will already be in place with no need to upgrade. > > The other option would be to move to 4.14: Probably more stable (as > it's been out for over a year now), but doesn't have either PVH domU > or PVH dom0 support. > > I'd suggest 4.19. Any other opinions? >+1 for 4.19 kernel as the next version. How about blktap2 driver? In our current 4.9 kernel we have the blktap2 patch included. I think Johnny originally ported the earlier 3.18 kernel blktap2 patch to 4.9.> -George >Thanks, -- Pasi