On Sun, 11 Mar 2007 21:58:29 -0400 Douglas Allan Tutty <[EMAIL PROTECTED]> wrote:
[snip] > possible but there could be some data corruption. ext3 journals data as > well as metadata but takes forever to regenerate after a crash and there > can still be errors. >From man mount(8): > Mount options for ext3 > The ‘ext3’ file system is a version of the ext2 file system which has > been enhanced with journalling. It supports the same options as ext2 > as well as the following additions: [snip] > data=journal / data=ordered / data=writeback > Specifies the journalling mode for file data. Metadata is > always journaled. To use modes other than ordered on the root > file system, pass the mode to the kernel as boot parameter, e.g. > rootflags=data=journal. > > journal > All data is committed into the journal prior to being > written into the main file system. > > ordered > This is the default mode. All data is forced directly > out to the main file system prior to its metadata being > committed to the journal. > > writeback > Data ordering is not preserved - data may be written into > the main file system after its metadata has been commit‐ > ted to the journal. This is rumoured to be the highest- > throughput option. It guarantees internal file system > integrity, however it can allow old data to appear in > files after a crash and journal recovery. So IUUC, ext3 only journals metadata by default, not data, although it jounals data also if 'data=journal' is specified. Celejar -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
