Re: File system problems

[Samuel Thibault]

Bruno Haible via Bug reports for the GNU Hurd, le mar. 14 janv. 2025 15:51:11 
+0100, a ecrit:
> Samuel Thibault wrote:
> > > when I run 'sync' it hangs. I can interrupt the 'sync' command via
> > > Ctrl-C and restart it, but it then still hangs. I ended up rebooted
> > > anyway, and after reboot an 'fsck' was required. This 'fsck' found
> > > between 17000 and 170000 empty directories (depending on how much time
> > > I had let 'sync' run). The data (built files under testdir-all) was
> > > good, though.
> > 
> > disk writeback is a beast, yes. If tests are creating lots of data on
> > the disk that's stressing the VM and possibly it even gets to OOM, which
> > is a hard thing to recover from.
> 
> But the effects - tens of thousands of directories to fix at the next 'fsck' -
> make it look like something is *very* wrong.

Hard-rebooting without ext2fs being able to sync always means some odd
stuff, that's not really surprising: it didn't finish its work.

> Would it help to find out which part of the build process triggers this,

That would be useful, yes.

Samuel