Andriy Gapon
2018-Oct-19 14:34 UTC
krpc: unbootable ZFS-on-root after major upgrade to 11.2
On 19/10/2018 12:24, Eugene Grosbein wrote:> On 19.10.2018 13:28, Andriy Gapon wrote: > >>> It was brought to my attention that 10.x did not require availability >>> of krpc for ZFS-on-root system to be bootable but 11.x does. >>> >>> That is, major upgrade of 10.x ZFS-on-root system to 11.x >>> results in non-bootable broken system if it uses custom kernel without NFS bits >>> that automatically come with krpc, and the system was built with MODULES_OVERRIDE="zfs opensolaris" >>> and no krpc mentioned. >> >> Could you please also describe specifics of the problem? >> It's kidn of strange that root-on-zfs requires krpc. > > https://svnweb.freebsd.org/base/stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c?revision=339111&view=markup#l7146 > > This code uses some xdr(3) functions to parse zpool.cache > and kernel-side implementation of xdr(3) is contained in krpc.ko > > Out of curiosity, I've commented out mentioned MODULE_DEPEND(zfsctrl, krpc, 1, 1, 1), > rebuilt zfs.ko and tried to kldload it using UFS-only system having no NFS code in the kernel > and it failed with a note in dmesg: > > link_elf: symbol xdrmem_create undefinedIt'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. -- Andriy Gapon
Eugene Grosbein
2018-Oct-22 13:59 UTC
krpc: unbootable ZFS-on-root after major upgrade to 11.2
19.10.2018 21:34, Andriy Gapon wrote:> It'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.