2007 DST update for RH7.2

[Paul Rupe]

We have some RedHat 7.2 machines that we are stuck with for the time
being. Of concern is the new daylight savings time rules that take effect
this year. I did some searching on this list and found an update for 7.3
<http://www.redhat.com/archives/fedora-legacy-announce/2006-March/msg00014.html>.

I understand that no one is making updates for 7.2 anymore, so I was
wondering if I can adapt the one for 7.3. The timezone rules are part of
the glibc packages. Do I really need the new version of glibc, or can I
simply copy the /usr/share/zoneinfo files from the updated 7.3 packages
onto 7.2? In other words, do the new zoneinfo files require the new glibc
to work properly?

[Jesse Keating]

Post by Paul Rupe
I understand that no one is making updates for 7.2 anymore, so I was
wondering if I can adapt the one for 7.3.  The timezone rules are part of
the glibc packages.  Do I really need the new version of glibc, or can I
simply copy the /usr/share/zoneinfo files from the updated 7.3 packages
onto 7.2?  In other words, do the new zoneinfo files require the new glibc
to work properly?

I don't believe so. In future releases, tzdata was separate from glibc so
that one didn't have to do a glibc update to get new zone info, which seems
to change on a month to month basis (looking at the world view).

[Adam Gibson]

Post by Jesse Keating

Post by Paul Rupe
I understand that no one is making updates for 7.2 anymore, so I was
wondering if I can adapt the one for 7.3. The timezone rules are part of
the glibc packages. Do I really need the new version of glibc, or can I
simply copy the /usr/share/zoneinfo files from the updated 7.3 packages
onto 7.2? In other words, do the new zoneinfo files require the new glibc
to work properly?

I don't believe so. In future releases, tzdata was separate from glibc so
that one didn't have to do a glibc update to get new zone info, which seems
to change on a month to month basis (looking at the world view).

Couldn't you just take a correctly setup and updated 7.3 system's
/etc/localtime file and copy it to the 7.2's etc directory? I wonder if
there are any formating changes of the localtime file that would cause
problems between glibc versions. I would think that format is set in
stone by now.

[Matt Temple]

What I found was that the newest tzdata rpms did NO writing to anything
expect /usr/share/zoneinfo,
so I installed them via RPM with --nodeps and --force.
Then I fixed the link at /etc/locatime to
/usr/share/zoneinfo/America/New_York.
It seems to be working on 7.3 and 9.0. I can't speak for 7.2.
Has anyone found different?

Matt Temple

Post by Adam Gibson

Post by Jesse Keating

Post by Paul Rupe
I understand that no one is making updates for 7.2 anymore, so I was
wondering if I can adapt the one for 7.3. The timezone rules are part of
the glibc packages. Do I really need the new version of glibc, or can I
simply copy the /usr/share/zoneinfo files from the updated 7.3 packages
onto 7.2? In other words, do the new zoneinfo files require the new glibc
to work properly?

I don't believe so. In future releases, tzdata was separate from
glibc so that one didn't have to do a glibc update to get new zone
info, which seems to change on a month to month basis (looking at the
world view).

Couldn't you just take a correctly setup and updated 7.3 system's
/etc/localtime file and copy it to the 7.2's etc directory? I wonder
if there are any formating changes of the localtime file that would
cause problems between glibc versions. I would think that format is
set in stone by now.
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