#3148 Issue open: ErrorIfDeprecated when 'gpt_sync_mbr' is used¶
Labels: cleanup, discuss / RFC
jsmeix opened issue at 2024-02-08 08:29:¶
Support for the SUSE specific 'gpt_sync_mbr' partitioning scheme
(see
https://github.com/rear/rear/issues/544
what that is)
should be dropped in ReaR because
the SUSE specific patches for 'gpt_sync_mbr' in parted were
removed in March 2016 for SLES12 SP2 so 'gpt_sync_mbr'
is no longer supported by SUSE since 2016.
This issue is triggered by
https://github.com/rear/rear/pull/3145
therein in particular
https://github.com/rear/rear/pull/3145#discussion_r1481388431
that reads (excerpt)
I think you can safely ignore the 'gpt_sync_mbr' partitioning.
Details:
I found https://build.opensuse.org/request/show/519107
where the SUSE specific patches to parted were removed
that implemented the 'gpt_sync_mbr' partitioning.
The comment therein (excerpt)
---------------------------------------------------------------
clean-up regarding pMBR handling to sync with SLE12-SP*
---------------------------------------------------------------
indicates that the 'gpt_sync_mbr' partitioning
was no longer supported since some SLES12 service pack.
Further investigation with the openSUSE build service
tool 'osc' shows
---------------------------------------------------------------
# osc search parted | grep '^SUSE:SLE-12'
SUSE:SLE-12-SP1:GA parted
SUSE:SLE-12-SP1:Update parted
SUSE:SLE-12-SP2:GA parted
SUSE:SLE-12-SP2:Update parted
SUSE:SLE-12-SP3:GA parted
SUSE:SLE-12-SP3:Update parted
SUSE:SLE-12-SP4:GA parted
SUSE:SLE-12-SP4:Update parted
SUSE:SLE-12:GA parted
# osc cat SUSE:SLE-12-SP2:GA parted parted.changes
...
Thu Mar 24 11:52:51 UTC 2016 - puzel@suse.com
- Drop (SUSE specific) support for hybrid pMBR (gpt_sync_mbr
label) (fate#317849)
- remove: parted-gpt-mbr-sync.patch
- remove: libparted-ppc-prepboot-in-syncmbr.patch
- refresh patches
---------------------------------------------------------------
SUSE:SLE-12-SP1:GA parted parted.changes does not contain that.
So the SUSE specific patches for 'gpt_sync_mbr' were removed
for SLES12 SP2.
This means a SLES12 system that was installed with SLES12
before SLES12 SP2 could have 'gpt_sync_mbr' partitioning.
Subsequent system upgrades to further service packs only
upgrade RPM packages but leave the partitioning unchanged.
I think that one can also upgrade from SLES12 to SLES15
without new partitioning (i.e. without installing from scratch)
so there could be even SLES15 systems with old inherited
'gpt_sync_mbr' partitioning.
If issues appear in ReaR because of an old inherited
'gpt_sync_mbr' partitioning, it is SUSE's problem
Because there could be recent SLES15 systems
with old inherited 'gpt_sync_mbr' partitioning
users with such systems should get an obvious information
that 'gpt_sync_mbr' support is deprecated in ReaR
so we at ReaR upstream cas see if there are really
users with old inherited 'gpt_sync_mbr' partitioning.
In particular I never again tested a system
with 'gpt_sync_mbr' partitioning since the time
when I had implemented basic support for it
in November 2015 via
https://github.com/rear/rear/pull/681
jsmeix commented at 2024-02-08 08:58:¶
FYI
and for the fun of it some "forensics":
According to
https://github.com/rear/rear/issues/544#issuecomment-120913214
the root is
https://bugzilla.opensuse.org/show_bug.cgi?id=220839
and according to its
https://bugzilla.opensuse.org/show_bug.cgi?id=220839#c42
the SUSE specific 'gpt_sync_mbr' partitioning scheme
was introduced in July 2008.
In November 2015 I implemented basic support for it in ReaR.
In March 2016 the SUSE patches for 'gpt_sync_mbr' were removed
for SLES12 SP2 which was released in November 2016, cf.
https://en.wikipedia.org/wiki/SUSE_Linux_Enterprise
Now in February 2024 support for 'gpt_sync_mbr' in ReaR
will get shown as deprecated via ErrorIfDeprecated.
Let's wait and see how long it will take until the last system
with old inherited 'gpt_sync_mbr' partitioning has gone ;-)
[Export of Github issue for rear/rear.]