Il 2020-02-14 21:40 David Teigland ha scritto:
You're right, filters are difficult to understand and use correctly.
The
complexity and confusion in the code is no better. With the removal of
lvmetad in 2.03 versions (e.g. RHEL8) there's no difference between
filter
and global_filter, so that's some small improvement. But, I think
filters
should be replaced or overhauled with something easier to use and more
useful at a technical level.
I've created a bz about that and welcome thoughts about what a
replacement
should or should not be like. With input the work is more likely to be
prioritized.
https://bugzilla.redhat.com/show_bug.cgi?id=1803266
Hi David, I think that part of the problem is the unclear/vague
description of filters (eg: "plain" filter vs global_filter). In other
words, maybe the real problem is a documentation one.
For example: am I right saying that global_filter were introduced as a
"fail-safe" mechanism to protect udev & the likes by
command-line-overwritten "plain" filter directive?
If so, I am not sure the comment in lvm.conf fully convey this message
(and I can not find much on man pages, also). If not, and I am wrong
about filter vs global_filter, then, well, this somewhat proves the
point above :)
Thanks.
--
Danti Gionatan
Supporto Tecnico
Assyoma S.r.l. - www.assyoma.it [1]
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