On Fri, 2008-04-18 at 10:09 -0400, Josef Bacik wrote: > On Fri, Apr 18, 2008 at 10:00:54PM +0900, Hidehiro Kawai wrote: > > Subject: [PATCH 0/4] jbd: possible filesystem corruption fixes > > > > The current JBD is not sufficient for I/O error handling. It can > > cause filesystem corruption. An example scenario: > > > > 1. fail to write a metadata buffer to block B in the journal > > 2. succeed to write the commit record > > 3. the system crashes, reboots and mount the filesystem > > 4. in the recovery phase, succeed to read data from block B > > 5. write back the read data to the filesystem, but it is a stale > > metadata > > 6. lose some files and directories! > > > > This scenario is a rare case, but it (temporal I/O error) > > can occur. If we abort the journal between 1. and 2., this > > tragedy can be avoided. > > > > This patch set fixes several error handling problems to protect > > from filesystem corruption caused by I/O errors. It has been > > done only for JBD and ext3 parts. > > > Could you sent Ext4/JBD2 version patches? Thanks! > There doesn't seem like much point in taking these patches as Jan is rewriting > the ordered mode path and most of these functions will be going away soon. > Those patches seem like they will be coming soon and will obsolete these. > I hope we have a better ordered mode very soon too. Just thought it's still valid to fix the current ordered mode for people who uses linux-2.6.25 kernel today. Mingming > Josef > -- > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
