Package: release-notes This is a note that I suggest to add to the next Installation manual since it is about a possible problem that would render your system unusable.
Starting with 2.6.30 kernels, ext3 default mount option is now data=writeback instead of "data=ordered". If you have "data=ordered" in /etc/fstab then you will not be able to mount read/write your file system after upgrading kernel from 2.6.29. When the new kernel starts, it mount the root volume using default file system option. Then, when remounting the file system as read/write, only a few options can be changed. Option "data" cannot be changed. If your /etc/fstab contain "data=ordered", the kernel will write this message: EXT3-fs: cannot change data mode on remount and will not remount the file system as read/write. This will, of course, make your system unusable (or, let's say... really secure) and you will not be able to change /etc/fstab in any way. The solution is to use kernel parameter "rootflags=" and specify "data=ordered" in order to permit the switch from read only to read/write while starting up the system. Once the system has been mounted, change /etc/fstab removing "data=ordered" or change your boot loader in order to always pass the appropriate rootflags. If you are already using data=journal, since this is not a default option, you are already also specifying rootflags parameter, so nothing should be changed. Bye, Giuseppe -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
