/srv/irclogs.ubuntu.com/2018/02/09/#ubuntu-kernel.txt

=== himcesjf_ is now known as him-cesjf
ourslandHi all, I get a build error when following the wiki on rebuilding the kernel.  The error seems to be due to SPL/ZFS.  The error and my build scripts are available: https://gitlab.com/snippets/1696811  Any advice on getting the kernel to build?05:41
=== ulysses_ is now known as ulysses
=== zyga_ is now known as zyga
apwoursland, are you building from a mainline builds source ?09:01
apwoursland, if so those don't even have zfs applied so you can only build those with do_zfs=false09:02
apwoursland, and tools always build into a 'one pre architecture' package, but the primary kernle build should build a linux-tools-*-<flavour> with links in it09:02
fricklerwe are having multiple servers going oom in a couple of days reproducibly after upgrading to 4.13-hwe kernels. they are running fine with 4.10-hwe (did so for a year and do again after booting with the older kernel again). has anyone seen similar things? this also happens with older 4.13-0.19, so likely not related to recent pti/meltdown stuff09:11
apwfrickler, i do not think i have heard of anything like yet as yet ... coul dyou file a bug against the kernle please09:14
apwfrickler, and put as much detail about how you are triggering that09:14
fricklerapw: https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1748408 I'm testing with upstream kernel now09:48
ubot5Ubuntu bug 1748408 in linux-hwe (Ubuntu) "Servers going OOM" [Undecided,New]09:48
apwfrickler, great, if you can find somewhere not affected that is always good09:56
fricklerapw: well, 4.10 is fine, but I don't know whether a bisect from 4.10 to 4.13 would be feasible10:00
apwfrickler, well if you are able to test the mainline builds if they are full featured enough10:01
apwyou might well be able to work through 4.11 4.12 and 4.13 mainline10:01
apwto see which of those work, then we move to the -rc builds, and then we can bisect in that gap10:01
fricklerapw: at least one system is running now with 4.15, will need to wait a couple of hours to see how it behaves10:02
apwfrickler, i've passed the bug on to someone who can help with a bisect when you get to that point10:13
fricklerapw: I just noticed that the mainline kernels are lacking aufs support, so docker won't run properly, giving less confidence in my testing results for these kernels. is it missing intentionally?13:31
apwfrickler, they are mainline kernels, they can only have things which are mainline14:03
fricklerapw: yeah, I found out in the meantime that aufs has been removed after having long been deprecated, working to replace that now14:14
apwaufs was never upstream, so it isn't in any of the mainline builds14:14
fricklerapw: hmm, strange, not sure why it is being used by default then in our setup. but anyway, can't be too bad to move away from it. would be even nicer if it turned out to have caused my original issue ;)14:18
apwheh14:18
ourslandapw: do_zfs=false fixed my problem.  Thanks!21:21

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