[oi-dev] Illumos/Solaris zpool ands GPT Partitions/Slices

[Atiq Rahman]

Hi John,
Here's the partition order that repros that on my system.

---

$ sudo parted /dev/rdsk/c2t00A075014881A463d0 print

Model: Generic Ide (ide)
Disk /dev/rdsk/c2t00A075014881A463d0: 1024GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system  Name
 Flags
 1      1049kB  269MB   268MB   fat32        EFI System Partition
 boot
 2      269MB   404MB   134MB                Microsoft reserved partition
 msftres
 3      404MB   138GB   137GB   ntfs         Basic data partition

 4      138GB   139GB   1074MB  ntfs        Basic data partition
 hidden
 5      139GB   242GB   103GB   ntfs         Basic data partition

 6      242GB   767GB   525GB

 7      767GB   768GB   1000MB  ext3       pop_os/boot

 8      768GB   1024GB  256GB                 solaris


$ sudo format
* /dev/rdsk/c2t00A075014881A463d0 partition map
*
* Dimensions:
*         512 bytes/sector
*  2000409264 sectors
*  2000409197 accessible sectors
*
* Flags:
*   1: unmountable
*  10: read-only
*
* Unallocated space:
*         First       Sector      Last
*         Sector       Count      Sector
*            34        2014        2047
*     269223936     2097152   271321087
*     472647680  1027352576  1500000255
*    2000408576         654  2000409229
*
*                            First       Sector      Last
* Partition  Tag  Flags      Sector       Count      Sector  Mount Directory
       0     12    00         2048      524288      526335
       1     19    00       526336      262144      788479
       2     20    00       788480   268435456   269223935
       4     20    00    271321088   201326592   472647679
       (last entry came out to be 6 0 0 something that doesn't make
sense...)
----


As a workaround, I changed the last partition's number using gdisk which
led to a successful zfs pool creation. Till I did that OI wasn't able to
find that partition (on slice 7 nothing was mapped, on slice 6 linux's
/boot partition was mapped).

Cheers!

Atiq

On Fri, Aug 15, 2025 at 7:21 PM John D Groenveld via oi-dev <
oi-dev at openindiana.org> wrote:

> In message <
> CABC65rN6C2FwKs+miCtnGQK3-Mm3VaDZzbnwfA7npL6TuYCKKw at mail.gmail.com>
> , Atiq Rahman writes:
> >*zpool lists pool from unavailable GPT Partition/Slice:*
> >When my solaris/illumos partition is 8 as the number as listed on parted,
> >the OI live image format etc tools cannot find it anymore even though
> >parted lists it fine (and number on parted output becomes greater than 7,
> >s7 for example won't work with the tools, format won't show the slice)
>
> I am unable to reproduce on OI:
> # zpool status
>   pool: rpool
>  state: ONLINE
>   scan: none requested
> config:
>
>         NAME        STATE     READ WRITE CKSUM
>         rpool       ONLINE       0     0     0
>           c2t0d0s9  ONLINE       0     0     0
>
> errors: No known data errors
>
> What does prtvtoc(8) report for your partition table?
> <URL:https://illumos.org/man/8/prtvtoc>
>
> John
> groeneld at acm.org
>
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