-Severity : major
-Frequency : rare
-Bugzilla : 6334
-Description: Multiple mount protection(MMP) support.
-Details : This feature will protect the filesystem from being mounted more
- than once simultaneously. It will also protect changes by e2fsprogs
- to the filesystem if it is mounted. This assumes high importance
- in a shared storage environment where multiple mounts can severely
- corrupt the filesystem.
-
-Severity : normal
-Bugzilla : 10657
-Description: Add journal checksum support. (ext3 part)
-Details : The journal checksum feature adds two new flags i.e
- JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and
- JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag
- indicates that the commit block contains the checksum for
- the blocks described by the descriptor blocks. Now commit
- record can be sent to disk without waiting for descriptor
- blocks to be written to disk. This behavior is controlled
- using JBD2_FEATURE_ASYNC_COMMIT flag.
-
-Severity : enhancement
-Bugzilla : 10555
-Description: Add a FIEMAP(FIle Extent MAP) ioctl for ldiskfs
-Details : FIEMAP ioctl will allow an application to efficiently fetch the
- extent information of a file. It can be used to map logical blocks
- in a file to physical blocks in the block device.
-