[Ocfs2-devel] [PATCH 1/3] Add errors=continue

[Joseph Qi]

Hi Goldwyn,
On 2015/3/4 2:08, Goldwyn Rodrigues wrote:
> OCFS2 is often used in high-availaibility systems. However, ocfs2
> converts the filesystem to read-only at the drop of the hat. This
> may not be necessary, since turning the filesystem read-only would
> affect other running processes as well, decreasing availability.
> 
> This attempt is to add errors=continue, which would return the EIO
> to the calling process and terminate furhter processing so that
> the filesystem is not corrupted further. However, the filesystem
> is not converted to read-only.
> 
> As a future plan, I intend to create a small utility or extend
> fsck.ocfs2 to fix small errors such as in the inode. The input
> to the utility such as the inode can come from the kernel logs
> so we don't have to schedule a downtime for fixing small-enough
> errors.
I am interested in your thought. As a cluster filesystem, I don't think
it is a good idea that we set the whole filesystem to readonly because
of a small error (for example, inode OCFS2_VALID_FL not set). It impacts
too much. So we can isolate some errors and fix them in the backgroud,
without offline fsck.
I think you can send a RFC to discuss this topic.

--
Joseph