Hi all,
We have came to consensus about using discard in e2fsprogs tools. These
patches generalize use of discard in e2fsprogs tools introduce changes
in mke2fs and e2fsck.
Short summary
-------------
[PATCH 1/6] e2fsprogs: Add discard function into struct_io_manager
* generalize use of discard in e2fsprogs and let any tool in e2fsprogs
take advantage of it withou need to write its own BLKDISCARD wrappers.
[PATCH 2/6] e2fsprogs: Add CHANNEL_FLAGS_DISCARD_ZEROES flag for io_manager
* Give the opportunity for any io_manager to check if device discard
support zeroes data and save the results into io_channel for use in
any e2fsprofs tool.
[PATCH 3/6] e2fsck: Discard free data and inode blocks.
* In pass 5 after the group descriptors has been changed discard free
data and inode blocks. The consensus was that it should be OFF by
default, so it is.
* Introduce new paid of extended options discard/nodiscard.
[PATCH 4/6] mke2fs: Deprecate -K option, introduce discard/nodiscard
* To the same of consistency and to gain ability to easily default it
the new pair of extended options has been added.
* The consensus was that it should stay ON by default, so it is.
[PATCH 5/6] mke2fs: Use unix_discard() for discards
[PATCH 6/6] mke2fs: Add discard option into mke2fs.conf
Any comments appreciated!
Thanks!
-Lukas
---
[PATCH 1/6] e2fsprogs: Add discard function into struct_io_manager
[PATCH 2/6] e2fsprogs: Add CHANNEL_FLAGS_DISCARD_ZEROES flag for io_manager
[PATCH 3/6] e2fsck: Discard free data and inode blocks.
[PATCH 4/6] mke2fs: Deprecate -K option, introduce discard/nodiscard
[PATCH 5/6] mke2fs: Use unix_discard() for discards
[PATCH 6/6] mke2fs: Add discard option into mke2fs.conf
e2fsck/e2fsck.8.in | 14 +++++++
e2fsck/e2fsck.h | 1 +
e2fsck/pass5.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++
e2fsck/unix.c | 10 ++++-
lib/ext2fs/ext2_io.h | 5 ++
lib/ext2fs/unix_io.c | 45 ++++++++++++++++++++++-
misc/mke2fs.8.in | 18 +++++---
misc/mke2fs.c | 98 ++++++++++++++-----------------------------------
misc/mke2fs.conf.5.in | 5 ++
9 files changed, 213 insertions(+), 79 deletions(-)
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