linux/Documentation/device-mapper
Milan Broz 772ae5f54d dm crypt: optionally support discard requests
Add optional parameter field to dmcrypt table and support
"allow_discards" option.

Discard requests bypass crypt queue processing. Bio is simple remapped
to underlying device.

Note that discard will be never enabled by default because of security
consequences.  It is up to the administrator to enable it for encrypted
devices.

(Note that userspace cryptsetup does not understand new optional
parameters yet.  Support for this will come later.  Until then, you
should use 'dmsetup' to enable and disable this.)

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2011-08-02 12:32:08 +01:00
..
delay.txt
dm-crypt.txt dm crypt: optionally support discard requests 2011-08-02 12:32:08 +01:00
dm-flakey.txt dm flakey: add corrupt_bio_byte feature 2011-08-02 12:32:06 +01:00
dm-io.txt
dm-log.txt
dm-queue-length.txt
dm-raid.txt dm raid: support metadata devices 2011-08-02 12:32:07 +01:00
dm-service-time.txt Fix common misspellings 2011-03-31 11:26:23 -03:00
dm-uevent.txt
kcopyd.txt
linear.txt
snapshot.txt dm: document when snapshot has finished merging 2010-03-06 02:29:56 +00:00
striped.txt
zero.txt