[Bug 277358] problem with gpart backup & restore

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=277358

            Bug ID: 277358
           Summary: problem with gpart backup & restore
           Product: Base System
           Version: 14.0-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: freebsd@ihead.ru

Something wrong with gpart backup & restore.

Have this:
# gpart show ada1
=>        40  2000409184  ada1  GPT  (954G)
          40        1024     1  freebsd-boot  (512K)
        1064         984        - free -  (492K)
        2048     4194304     2  freebsd-ufs  (2.0G)
     4196352   268435456     3  freebsd-swap  (128G)
   272631808   293601280     4  freebsd-ufs  (140G)
   566233088    20971520     5  freebsd-ufs  (10G)
   587204608    62914560     6  freebsd-ufs  (30G)
   650119168  1350290056        - free -  (644G)


# gpart backup ada1 > ada1.backup

# cat ada1.backup
GPT 128
1   freebsd-boot         40       1024
2    freebsd-ufs       2048    4194304
3   freebsd-swap    4196352  268435456
4    freebsd-ufs  272631808  293601280
5    freebsd-ufs  566233088   20971520
6    freebsd-ufs  587204608   62914560

# gpart restore ada0 < ada1.backup

# gpart show ada0
=>        34  2000409197  ada0  GPT  (954G)
          34           6        - free -  (3.0K)
          40        1024     1  freebsd-boot  (512K)
        1064         984        - free -  (492K)
        2048     4194304     2  freebsd-ufs  (2.0G)
     4196352   268435456     3  freebsd-swap  (128G)
   272631808   293601280     4  freebsd-ufs  (140G)
   566233088    20971520     5  freebsd-ufs  (10G)
   587204608    62914560     6  freebsd-ufs  (30G)
   650119168  1350290063        - free -  (644G)

"gpart show ada0" and "gpart show ada1" produce different output.

And manualy:

# gpart destroy -F ada0
ada0 destroyed
[root@s46 ~]# gpart show ada1
=>        40  2000409184  ada1  GPT  (954G)
          40        1024     1  freebsd-boot  (512K)
        1064         984        - free -  (492K)
        2048     4194304     2  freebsd-ufs  (2.0G)
     4196352   268435456     3  freebsd-swap  (128G)
   272631808   293601280     4  freebsd-ufs  (140G)
   566233088    20971520     5  freebsd-ufs  (10G)
   587204608    62914560     6  freebsd-ufs  (30G)
   650119168  1350290056        - free -  (644G)

# gpart create -s GPT ada0
ada0 created

# gpart add -t freebsd-boot -s 512K ada0
ada0p1 added

# gpart add -t freebsd-ufs -s 2G -a 1m ada0
ada0p2 added

# gpart add -t freebsd-swap -s 128G ada0
ada0p3 added

# gpart add -t freebsd-ufs -s 140G ada0
ada0p4 added

# gpart add -t freebsd-ufs -s 10G ada0
ada0p5 added

# gpart add -t freebsd-ufs -s 30G ada0
ada0p6 added

# gpart show ada0
=>        40  2000409184  ada0  GPT  (954G)
          40        1024     1  freebsd-boot  (512K)
        1064         984        - free -  (492K)
        2048     4194304     2  freebsd-ufs  (2.0G)
     4196352   268435456     3  freebsd-swap  (128G)
   272631808   293601280     4  freebsd-ufs  (140G)
   566233088    20971520     5  freebsd-ufs  (10G)
   587204608    62914560     6  freebsd-ufs  (30G)
   650119168  1350290056        - free -  (644G)

# gpart show ada1
=>        40  2000409184  ada1  GPT  (954G)
          40        1024     1  freebsd-boot  (512K)
        1064         984        - free -  (492K)
        2048     4194304     2  freebsd-ufs  (2.0G)
     4196352   268435456     3  freebsd-swap  (128G)
   272631808   293601280     4  freebsd-ufs  (140G)
   566233088    20971520     5  freebsd-ufs  (10G)
   587204608    62914560     6  freebsd-ufs  (30G)
   650119168  1350290056        - free -  (644G)

"gpart show ada0" and "gpart show ada1" produce same output.

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