[Ocfs2-users] umount hang + high CPU

[Sunil Mushran]

The fix was for the oops you saw.

The hang is a different issue. We have no info on that.

For that, if you would like to diagnose the problem, read up the dlm notes
in the 1.4 user's guide. It explains a debugging process vis-a-vis hangs.

If the issue is dlm related, then we would like to have the tcpdumps.

Lastly, emails are not an efficient vehicle for handling such issues. Use
the bugzilla as it allows us to collect information in one place.

Sunil

sylarrrrrrr at aim.com wrote:
> So this bug is not over yet :(
>
> I have checked my kernel source and indeed it have this patch but I 
> still get the hang.
>
> PS. my linux-2.6-2.6.30/fs/ocfs2/dcache.c kernel source has:
>
>     290         else
>     291                 mlog_errno(ret);
>     292
>     293         /*
>     294          * In case of error, manually free the allocation and 
> do the iput().
>     295          * We need to do this because error here means no 
> d_instantiate(),
>     296          * which means iput() will not be called during 
> dput(dentry).
>     297          */
>     298         if (ret < 0 && !alias) {
>     299                 ocfs2_lock_res_free(&dl->dl_lockres);
>     300                 BUG_ON(dl->dl_count != 1);
>     301                 spin_lock(&dentry_attach_lock);
>     302                 dentry->d_fsdata = NULL;
>     303                 spin_unlock(&dentry_attach_lock);
>     304                 kfree(dl);
>     305                 iput(inode);
>     306         }
>     307
>     308         dput(alias);
>     309
>     310         return ret;
>     311 }
>
>