* [f2fs-dev] mkfs.f2fs -f to reformat Btrfs partition doesn't change FS type @ 2021-09-07 13:18 S. 2021-09-10 22:58 ` Jaegeuk Kim 0 siblings, 1 reply; 2+ messages in thread From: S. @ 2021-09-07 13:18 UTC (permalink / raw) To: linux-f2fs-devel Hi there, I develop Linux spins based on openSUSE Tumbleweed. Currently the base system has Linux 5.14.0 and f2fs-tools 1.14.0. There is a bug that I can consistently reproduce with: # mkfs.f2fs -f /dev/sda1 When the prior filesystem of /dev/sda1 is Btrfs, the `mkfs.f2fs` command is successful, but the filesystem type remains "Btrfs". Then the filesystem can be manually mounted with `mount -t f2fs ####` but only manually, the wrong FS type confuses the Linux boot process and won't allow it to mount in the case of a root partition. This appears to only happen when the previous filesystem is Btrfs. I have tested this bug to *not* occur when the previous filesystem is EXT4 and XFS. Thanks a lot! _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [f2fs-dev] mkfs.f2fs -f to reformat Btrfs partition doesn't change FS type 2021-09-07 13:18 [f2fs-dev] mkfs.f2fs -f to reformat Btrfs partition doesn't change FS type S. @ 2021-09-10 22:58 ` Jaegeuk Kim 0 siblings, 0 replies; 2+ messages in thread From: Jaegeuk Kim @ 2021-09-10 22:58 UTC (permalink / raw) To: S.; +Cc: linux-f2fs-devel On 09/07, S. wrote: > Hi there, I develop Linux spins based on openSUSE Tumbleweed. Currently the base system has Linux 5.14.0 and f2fs-tools 1.14.0. There is a bug that I can consistently reproduce with: > # mkfs.f2fs -f /dev/sda1 > When the prior filesystem of /dev/sda1 is Btrfs, the `mkfs.f2fs` command is successful, but the filesystem type remains "Btrfs". Then the filesystem can be manually mounted with `mount -t f2fs ####` but only manually, the wrong FS type confuses the Linux boot process and won't allow it to mount in the case of a root partition. This appears to only happen when the previous filesystem is Btrfs. I have tested this bug to *not* occur when the previous filesystem is EXT4 and XFS. It seems mkfs.f2fs didn't wipe the BTRFS magic since that is unused critical space in f2fs. Anyway, I think it's worth to fix it. https://lore.kernel.org/linux-f2fs-devel/20210910225618.501839-1-jaegeuk@kernel.org/T/#u > Thanks a lot! > > > _______________________________________________ > Linux-f2fs-devel mailing list > Linux-f2fs-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel ^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2021-09-10 22:59 UTC | newest] Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-09-07 13:18 [f2fs-dev] mkfs.f2fs -f to reformat Btrfs partition doesn't change FS type S. 2021-09-10 22:58 ` Jaegeuk Kim
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