linux-sg2042/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: delay target 2007-05-09 12:30:47 -07:00
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 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dm-log.txt dm raid1: add userspace log 2009-06-22 10:12:35 +01:00
dm-queue-length.txt dm mpath: add queue length load balancer 2009-06-22 10:12:27 +01:00
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 dm: uevent generate events 2007-10-20 02:01:26 +01:00
kcopyd.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
linear.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
snapshot.txt dm: document when snapshot has finished merging 2010-03-06 02:29:56 +00:00
striped.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
zero.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00