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Bug#1106757: ppc64el Trixie: Need default 64KB page kernel or installer option



On 2025-06-20 14:12, Pascal Hambourg wrote:
On 20/06/2025 à 09:18, Trupti wrote:

The Ext4 filesystem on /dev/sda5 was created using mkfs.ext4 -T largefile4 /dev/sda5.
Its block size is 64KB.

Can you check with "-T largefile" and without -T for completeness ?

Hi,

Yes, I have performed the additional tests you requested for completeness.And the block size output for newly created partitions are as follow:

root@debian:/home/usr# /sbin/tune2fs -l /dev/sda5 | grep "Block size"
Block size:               4096
root@debian:/home/usr# /sbin/tune2fs -l /dev/sda4 | grep "Block size"
Block size:               65536


The results are the same: the Trixie installer was unable to use either partition without requiring a reformat.

The partition created with -T largefile was incompatible.
The standard ext4 partition created without any -T option was also incompatible.

This creates a clear risk of data loss for users upgrading from Bookworm. To ensure a safe user experience, a dedicated 64k installer image is a necessity. Providing this for Trixie, and making it the default for future ppc64el releases, would prevent data loss and align Debian with platform standards.

Thanks Trupti.


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