Re: fsck UNREF FILE

On Mon, Jan 02, 2023 at 05:53:25PM -0800, Randall wrote:

> After my OpenBSD 7.2 box lost power, bootup halted when rc ran fsck which
> reported problems with inodes. At the root prompt, I ran fsck and answered
> 'y' to each prompt. Now, in normal mode, running fsck reports a few
> unreferenced files, auto-answers "no" to its "CLEAR?" prompt, and continues.
>
> $ sudo fsck
>
> ...
>
> ** /dev/sd0f (1cc70a7feb167ca7.f) (NO WRITE)
> ** Last Mounted on /usr
> ** Phase 1 - Check Blocks and Sizes
> ** Phase 2 - Check Pathnames
> ** Phase 3 - Check Connectivity
> ** Phase 4 - Check Reference Counts
> UNREF FILE I=1710838 OWNER=root MODE=100444
> SIZE=2935688 MTIME=Jan 1 15:44 2023
> CLEAR? no
>
> UNREF FILE I=2799427 OWNER=root MODE=100444
> SIZE=220408 MTIME=Jan 1 15:44 2023
> CLEAR? no
>
> ** Phase 5 - Check Cyl groups
> 16199 files, 373887 used, 14859799 free (447 frags, 1857419 blocks, 0.0%
> fragmentation)
>
> ...
>
> 1 files, 1 used, 1520726 free (14 frags, 190089 blocks, 0.0% fragmentation)
> ** /dev/sd0e (1cc70a7feb167ca7.e) (NO WRITE)
> ** Last Mounted on /var
> ** Phase 1 - Check Blocks and Sizes
> ** Phase 2 - Check Pathnames
> ** Phase 3 - Check Connectivity
> ** Phase 4 - Check Reference Counts
> UNREF FILE I=518412 OWNER=root MODE=100444
> SIZE=11479 MTIME=Jan 1 15:44 2023
> CLEAR? no
>
> ** Phase 5 - Check Cyl groups
> 404 files, 15061 used, 4232530 free (226 frags, 529038 blocks, 0.0%
> fragmentation)
>
> Why does fsck say "NO WRITE" for each partition? Is this why it auto-answers
> "no" to the "CLEAR?" question?
>
> --Randall
>

When yo run fsck on an mounted filesystem, fsck does not write. That's
why it auto-answer "no" to each question. Unmount the file system and
try again. You might need to go to single-user mode for that.

-Otto