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authorNeil Brown <neilb@notabene.brown>2008-06-27 18:31:36 -0400
committerNeil Brown <neilb@notabene.brown>2008-06-27 18:31:36 -0400
commit0fd62b861eac7d2dea9b7e939953b20f37186ea1 (patch)
treec15b1481076244c7093f6a0368c3cbc85fc9b7c6 /Documentation/md.txt
parentc7d0c941ae7f82940a13f785be70dc3097d96687 (diff)
Make sure all changes to md/array_state are notified.
Changes in md/array_state could be of interest to a monitoring program. So make sure all changes trigger a notification. Exceptions: changing active_idle to active is not reported because it is frequent and not interesting. changing active to active_idle is only reported on arrays with externally managed metadata, as it is not interesting otherwise. Signed-off-by: Neil Brown <neilb@suse.de>
Diffstat (limited to 'Documentation/md.txt')
-rw-r--r--Documentation/md.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/md.txt b/Documentation/md.txt
index a8b430627473..dca97ba4944a 100644
--- a/Documentation/md.txt
+++ b/Documentation/md.txt
@@ -236,6 +236,11 @@ All md devices contain:
236 writing the word for the desired state, however some states 236 writing the word for the desired state, however some states
237 cannot be explicitly set, and some transitions are not allowed. 237 cannot be explicitly set, and some transitions are not allowed.
238 238
239 Select/poll works on this file. All changes except between
240 active_idle and active (which can be frequent and are not
241 very interesting) are notified. active->active_idle is
242 reported if the metadata is externally managed.
243
239 clear 244 clear
240 No devices, no size, no level 245 No devices, no size, no level
241 Writing is equivalent to STOP_ARRAY ioctl 246 Writing is equivalent to STOP_ARRAY ioctl