[linux-lvm] Option to silence "WARNING: Sum of all thin volume sizes exceeds the size of thin pool"
zkabelac at redhat.com
Tue Sep 19 11:11:09 UTC 2017
Dne 19.9.2017 v 10:49 Gionatan Danti napsal(a):
> On 18/09/2017 23:10, matthew patton wrote:
>> If the warnings are not being emitted to STDERR then that needs to be fixed
>> right off the bat.
> The line with WARNINGs are written on STDERR, at least con recent LVM version.
>> 'lvs -q blah' should squash any warnings.
>> 'lvcreate' frankly shouldn't output anything unless invoked with '-v'
>> anyway. So therefore '-q' should also squash warnings.
> I'm not sure this is the right approach. I do not expect "-q" to remove *all*
> warnings, because warnings can be quite important.
There are couple troubles - there are always a 'skilled X unskilled' users.
and also there are varying distro maintainers..
We are already facing some troubles when some distributions do make a changes
to default configuration files which are not really ideal for 'default' users
(in other words opinions about defaults are different - moreover based on
wrong blog post from users...)
So we can introduce i.e. 'novice_user = 1' in lvm.conf - but it might be
effectively dropped when package maintainer decides this way lvm2 makes less
annoying messages around some commands.
But in case of thin-pool it's better to warn-ahead instead of facing troubles
later (as full thin-pool is not going to be pleasant experience...)
So we are looking for some solution which cannot be easily 'hidden' for
everyone - so we do not end with reports about 'hidden over-provisioning'
causing system malfunctioning. Yet it should be 'easy' to bypass it for
IMHO the most convenient in my eyes is a usage of some sort of 'envvar'
Since we already use similar logic to bypass i.e. FD close() warnings
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