Journaling Block Device layer
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-The Journaling Block Device layer (JBD) isn't ext3 specific. It was design to
-add journaling capabilities on a block device. The ext3 filesystem code will
-inform the JBD of modifications it is performing (called a transaction). The
-journal supports the transactions start and stop, and in case of crash, the
-journal can replayed the transactions to put the partition back in a
-consistent state fast.
+The Journaling Block Device layer (JBD) isn't ext3 specific. It was designed
+to add journaling capabilities to a block device. The ext3 filesystem code
+will inform the JBD of modifications it is performing (called a transaction).
+The journal supports the transactions start and stop, and in case of a crash,
+the journal can replay the transactions to quickly put the partition back into
+a consistent state.
Handles represent a single atomic update to a filesystem. JBD can handle an
external journal on a block device.
In the event of a crash, the journal can be replayed, bringing both data and
metadata into a consistent state. This mode is the slowest except when data
needs to be read from and written to disk at the same time where it
-outperforms all others modes.
+outperforms all other modes.
Compatibility
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