Re: [PATCH] modules: CONFIG_MODULE_COMPRESS: add hint that userspace support may easily be missing.

On Wed, Jun 3, 2015 at 7:30 PM, Lucas De Marchi
[off-list ref] wrote:

On Mon, Jun 1, 2015 at 3:26 AM, Rusty Russell [off-list ref] wrote:

quoted

Andreas Mohr [off-list ref] writes:

quoted

Hi,

I just had a not so nice experience
when finally upgrading to a new 4.1-rc5
with CONFIG_MODULE_COMPRESS newly enabled -
userspace binary parts (kmod 18 or 20 in my case)
did not have compression enabled
(at least on Debian 8pre, vs. encountering it enabled on FC21)
since it does not seem to be
the default build configuration of kmod (yet?).

Sure.  Let's get the maintainers to insert the actual version required
in the help text though.

kmod supports gz since the first version and xz since version 3.  So both
of them can be safely fall into "it's supported since the beginning of
kmod IMO".

Regarding the "default configuration", there's no such thing. Each distribution
uses a different one.

You could add something similar to this:

$ /usr/lib/systemd/systemd --version
systemd 220
+PAM +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP
+LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS
+KMOD +IDN

Kay