[oi-dev] Illumos/Solaris GPT Partitions/Slice Support

[Atiq Rahman]

> You should ideally have one slice device for each GPT partition.


Looks like the max number of GPT partitions supported is 7. When my
solaris/illumos partition is 8 as the number as listed on parted, the OI
live image cannot find it anymore.


Parted and these fs, partitioning tools need updating. It cannot recognize
many newer filesystems. fstyp cannot recognize newer FSs either.


off-topic: where's (site lnk) the bug reporting tool for illumos?


Atiq


On Wed, Aug 13, 2025 at 6:24 PM Joshua M. Clulow via openindiana-discuss <
openindiana-discuss at openindiana.org> wrote:

> On Wed, 13 Aug 2025 at 17:53, Atiq Rahman <atiqcx at gmail.com> wrote:
> > I see that parted can list all the partitions and format can list some.
> However, not all of them were listed under /dev/dsk or /dev/rdsk I could
> only see p0 to p4 (I guess illumos skipped the linux partitions).
>
> The p* devices are probably not what you're looking for.  The p0
> device is generally "the whole disk", including access to the
> partition table, etc.  The p1-4 devices are for access to the classic
> MBR primary partitions, of which there can only be four.
>
> If you've created a modern, EFI/GPT style partition table, and
> format(8) can see those GPT partitions, then what you want are the s*
> or "slice" devices, which is how we refer to them.  You should ideally
> have one slice device for each GPT partition.
>
>
>
> Cheers.
>
> --
> Joshua M. Clulow
> http://blog.sysmgr.org
>
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