On Mon, Oct 22, 2018 at 09:09:14PM +0700, Eugene Grosbein wrote: > 22.10.2018 21:03, Glen Barber wrote: > > t's strange that this is a 10.x vs 11.x issue. > >>> I see that zfs has the krpc dependency since r193128. > >>> And the call to xdrmem_create is there since r168404. > >> > >> You are right. I was mis-informed and have not verified enough a report > >> from local user. > >> > >> Glen, maybe that errata record should be deleted. The problem is real but > >> it is long-standing > >> and present in 10.x too. > >> > > > > Could you elaborate more on the failure case you originally reported > > first? If the problem is real, my feeling is that the errata entry > > should stay, just worded differently to reflect the failure case here. > > zfs.ko depends on krpc.ko. The KRPC code in compiled in GENERIC kernel as > dependency > of NFS client/server code. The problem arises if all of these are true: > > 1) a system uses custom kernel with NFS options removed; > 2) there is no krpc.ko available due to MODULES_OVERRIDE excluding it; > 3) the system boots off ZFS pool. > > In such case, loader cannot resolve dependency and fails to load zfs.ko > and kernel fails to mount root breaking boot sequence. > >
So, if I understand correctly (and please correct me if I am wrong), the majority of the text in the errata note is correct, however needs to be tweaked to remove "upgrading from 10.x...". Is this generally correct? Glen
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