ZFS build fails on 4.9 kernel: testing repo needs latest

[h1z1]

System information

Type	Version/Name
Distribution Name	CentOS
Distribution Version	6.8
Linux Kernel	kernel-ml 4.9.0-1.el6.elrepo
Architecture	x86_64
ZFS Version	0.7.0-rc2
SPL Version	0.7.0-rc2

Describe the problem you're observing

RPM install of zfs module fails to build

Describe how to reproduce the problem

i) Install zfs repo as per wiki https://github.com/zfsonlinux/zfs/wiki/RHEL-%26-CentOS

ii) Module will fail to build as per Issue #5393

Include any warning/errors/backtraces from the system logs

  CC [M]  /var/lib/dkms/zfs/0.7.0/build/module/zfs/zpl_inode.o
/var/lib/dkms/zfs/0.7.0/build/module/zfs/zpl_file.c:841: error: unknown field ‘aio_fsync’ specified in initializer
/var/lib/dkms/zfs/0.7.0/build/module/zfs/zpl_file.c:841: warning: initialization from incompatible pointer type
make[5]: *** [/var/lib/dkms/zfs/0.7.0/build/module/zfs/zpl_file.o] Error 1
make[5]: *** Waiting for unfinished jobs....
make[4]: *** [/var/lib/dkms/zfs/0.7.0/build/module/zfs] Error 2
make[3]: *** [_module_/var/lib/dkms/zfs/0.7.0/build/module] Error 2
make[3]: Leaving directory `/usr/src/kernels/4.9.0-1.el6.elrepo.x86_64'

Possibly related(?) latest release depends on a Fedora release dkms-2.2.0-20+, that is only available on CentOS from epel-testing (dkms-2.3-1.20161202gitde1dca9.el6.noarch). dkms-2.2.0.3-14 is the latest.

[loli10K]

@h1z1 Fixed in master #5398

@gmelikov can we add "search for closed PRs before opening a new issue" on the Wiki?

[gmelikov]

@loli10K it's already in CONTRIBUTING.md, but it's a good idea to add this info to ISSUE_TEMPLATE.md, i'll do it.

[h1z1]

Understood, should that be in the testing repo yet?

# grep -R HAVE_FILE_AIO_FSYNC /usr/src/zfs-0.7.0/*
# 

[loli10K]

@h1z1 i don't use RHEL/CentOS packages but since 7ca2505 has not landed in any tagged (pre-)release yet i don't think it is.

If you really need the latest bits and you know exactly what you're doing you should compile from source.

[h1z1]

I'll try. It will be an issue for anyone updating though.

[h1z1]

Finally got back to this - Rebuilding with latest from git compiles fine. Anyone building on newer kernels will need to do it manually until the rpm is updated.