Am 04.02.26 um 18:10 schrieb Ben Hutchings:
On Sat, 2026-01-31 at 12:26 +0100, 10dmar10 wrote:
Am 31.01.26 um 11:02 schrieb Salvatore Bonaccorso:
> Hi,
>
> On Sat, Jan 31, 2026 at 10:08:25AM +0100, 10dmar10 wrote:
[...]
>> while no longer used by default, XFS V4 support is still useful for
accessing
>> legacy XFS V4 file systems as long as kernel supports it.
>
> This is correct, the default was changed in upstream with f69260511c69
> ("xfs: disable deprecated features by default in Kconfig") and I
> believe we should follow that within the forky release cycle.
>
> Thus for forky I do not think we should diverge here from the default
> and re-enable deprecated features, but probably we should document it
> at least in the release notes so that people upgrading from trixie to
> forky are awaere that V4 filesystems will not be supported anymore.
>
> A NEWS entry in the packaging itself might be a good idea as well.
>
> Regards,
> Salvatore
Hi,
I wrote this bug report because I assumed the release interval for forky as 2027
-2030, which is within the kernel removal date for XFS V4 feature in 2030.
Debian stable releases are supported for 5 years on the most popular
architectures. So for forky this should be 2027-2032.
Enabling CONFIG_XFS_SUPPORT_V4 would allow to continue running otherwise
perfectly fine existing legacy XFS V4 filesystems without unnecessary breaking
anything within forky's release cycle...
Those filesystems must be quite old at this point, since v5 appears to
have been the default for new filesystems since xfsprogs 3.2.3 and
Debian 9 "stretch". And they do need to be upgraded at some point due
to the upstream EOL (and later, Y2038). How much would we gain by
putting it off another 2 years?
I agree with Salvatore that this just needs to be documented.
Ben.
Hi,
my point is not about "How much would we gain by putting it off another 2
years?", but about not loosing an existing reliably working capability for
another 4 years. AFAIK the only significant change between V4 and V5 XFS is crc
for metadata scrubbing...
