Re: Issues with md raid 1 on kernel 6.18 after booting kernel 6.19-rc1 once
Paul Menzel <[email protected]>
| Newsgroups | gmane.linux.raid |
|---|---|
| Message-ID | <[email protected]> |
Dear Kuai, Am 17.12.25 um 08:17 schrieb Yu Kuai: > 在 2025/12/17 15:13, BugReports 写道: >> >> ... >> >> We'll have to backport following patch into old kernels to make >> new arrays to assemble in old kernels. .... >> >> The md array which i am talking about was not created with kernel >> 6.19, it was created sometime in 2024. >> >> It was just used in kernel 6.19 and that broke compatibility with >> my 6.18 kernel. > > I know, I mean any array that is created or assembled in new kernels > will now have lsb field stored in metadata. This field is not > defined in old kernels and that's why array can't assembled in old > kernels, due to unknown metadata. > > This is what we have to do for new features, and we're planning to > avoid the forward compatibility issue with the above patch that I > mentioned. Is there really no way around it? Just testing a new kernel and being able to go back must be supported in my opinion, at least between one or two LTS versions. Kind regards, Paul