Bug 1173546

Summary:	Provide some way to circumvent "Disabling f2fs" though it's unsupported
Product:	[openSUSE] openSUSE Tumbleweed	Reporter:	Raphael Bertoche <bertocheraphael>
Component:	Kernel	Assignee:	Goldwyn Rodrigues <rgoldwyn>
Status:	RESOLVED FIXED	QA Contact:	E-mail List <qa-bugs>
Severity:	Enhancement
Priority:	P5 - None	CC:	afaerber, bugs, dleuenberger, jeffm, lnussel, nborisov
Version:	Current
Target Milestone:	---
Hardware:	All
OS:	openSUSE Factory
See Also:	http://bugzilla.opensuse.org/show_bug.cgi?id=1109665
Whiteboard:
Found By:	---	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---
Bug Depends on:	1109665
Bug Blocks:

Description Raphael Bertoche 2020-06-30 17:46:58 UTC

In the discussions about this as the thread linked below it was mentioned that enabling f2fs would be one line commentary away. But after removing the commentary I found out I have no  kernel module able to mount f2fs.

https://lists.opensuse.org/opensuse-kernel/2018-10/msg00001.html

It's worth mentioning f2fs is currently actively used - especially on mobile platforms and other SoCs.

Is it possible to provide a better way to mount an f2fs disk, even though you have dropped it's support, that doesn't involve recompiling the whole kernel every once in a while?

Comment 1 Raphael Bertoche 2020-06-30 17:54:07 UTC

Actually I meant to link to this thread

https://lists.opensuse.org/opensuse-factory/2019-01/msg00549.html

Comment 2 Jeff Mahoney 2020-06-30 18:14:43 UTC

The blacklist changes referenced in boo#1109665 landed, so it's as simple as re-enabling CONFIG_FS_F2FS.  We still can't support it under any circumstances for SLE, but we can enable it for openSUSE.

Comment 3 Raphael Bertoche 2020-06-30 19:14:43 UTC

Forgive my ignorance: For re-enabling this kernel option I must configure it on a kernel source directory and  manually compile either the source or the .ko, or is there an easier way to accomplish this?

Comment 4 Goldwyn Rodrigues 2020-07-01 19:35:31 UTC

(In reply to Raphael Bertoche from comment #3)
> Forgive my ignorance: For re-enabling this kernel option I must configure it
> on a kernel source directory and  manually compile either the source or the
> .ko, or is there an easier way to accomplish this?

Yes. Modify /boot/config-<version> and use it as a configuration file for kernel source.

In any case, I have enabled this for Tumbleweed, so it should be in the repository soon.

Comment 5 Raphael Bertoche 2020-07-08 17:22:18 UTC

> Yes. Modify /boot/config-<version> and use it as a configuration file for kernel source.

Thanks. I tried compiling it without using this config file and it wouldn't boot. Next time I'll try that.
Shouldn't that configuration be default for the kernel sourcepackage?

> In any case, I have enabled this for Tumbleweed, so it should be in the repository soon.

What enabled? If it was a change to CONFIG_F2FS_FS=m, that would be very thoughtful, since that blacklist already prevents unwary use

Comment 6 Goldwyn Rodrigues 2020-07-09 21:10:21 UTC

(In reply to Raphael Bertoche from comment #5)
> > Yes. Modify /boot/config-<version> and use it as a configuration file for kernel source.
> 
> Thanks. I tried compiling it without using this config file and it wouldn't
> boot. Next time I'll try that.
> Shouldn't that configuration be default for the kernel sourcepackage?

It builds kernel-default, if that's what you are asking.

> 
> > In any case, I have enabled this for Tumbleweed, so it should be in the repository soon.
> 
> What enabled? If it was a change to CONFIG_F2FS_FS=m, that would be very
> thoughtful, since that blacklist already prevents unwary use

Yes, CONFIG_F2FS_FS=m is enabled. It is already available in KOTD
https://build.opensuse.org/package/binaries/Kernel:HEAD/kernel-default/standard

Closing as FIXED

Comment 7 Raphael Bertoche 2020-07-09 23:42:18 UTC

Awesome! TW users using F2FS owe you one.