On Thu, Sep 21, 2017 at 10:37:43PM +0200, John Paul Adrian Glaubitz wrote: > I have one POWER7 machine that has been provided to me by IBM for testing > purposes and to host one of our buildds. I have performed a test installation > of openSUSE Tumbleweed on it. > > Here's the partitioning scheme that is being used: > > (parted) p > Model: Virtio Block Device (virtblk) > Disk /dev/vda: 42.9GB > Sector size (logical/physical): 512B/512B > Partition Table: msdos > Disk Flags: > > Number Start End Size Type File system Flags > 1 1049kB 2097kB 1049kB primary boot, prep, type=41 > 2 2097kB 2163MB 2161MB primary linux-swap(v1) type=82 > 3 2163MB 18.9GB 16.7GB primary btrfs type=83 > 4 18.9GB 42.9GB 24.0GB primary xfs type=83 > > (parted) > > Interestingly, /boot is part of the btrfs filesystem: > > linux-mfl2:~ # mount | grep boot > /dev/vda3 on /boot/grub2/powerpc-ieee1275 type btrfs > (rw,relatime,space_cache,subvolid=261,subvol=/@/boot/grub2/powerpc-ieee1275) > linux-mfl2:~ #
Well as long as grub can read that, then no problem. So as long as grub-install is including btrfs support in the grub image placed in the prep boot partition, then /boot can be on btrfs. That is almost certainly the case. > Ok, so I guess we can basically rule out GPT for the default label even > on POWER systems. I would therefore then vote for using MS-DOS partition > tables on POWER systems, i.e. what is already used now. For powerpc/ppc64 I would agree. For ppc64el GPT should be fine, and I believe someone said that is in fact what they have done since it is power8+ only. > So, MS-DOS partition tables will not work at all on a Mac, correct? Not as far as I know. And given the apple partition table is better anyhow, why would you want to? -- Len Sorensen
