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authorNeil Brown <neilb@notabene.brown>2008-06-28 08:31:44 +1000
committerNeil Brown <neilb@notabene.brown>2008-06-28 08:31:44 +1000
commit526647320e696f434647f38421a6ecf65b859c43 (patch)
treeaa6bf13e6aa766051ba32a8b64157f4adf9fcd3e /Documentation/md.txt
parenta99ac97113d5bc25ddc4d17f404c2024ac6c57f9 (diff)
downloadop-kernel-dev-526647320e696f434647f38421a6ecf65b859c43.zip
op-kernel-dev-526647320e696f434647f38421a6ecf65b859c43.tar.gz
Make sure all changes to md/dev-XX/state are notified
The important state change happens during an interrupt in md_error. So just set a flag there and call sysfs_notify later in process context. Signed-off-by: Neil Brown <neilb@suse.de>
Diffstat (limited to 'Documentation/md.txt')
-rw-r--r--Documentation/md.txt10
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/md.txt b/Documentation/md.txt
index eb6e69e..e06cc59 100644
--- a/Documentation/md.txt
+++ b/Documentation/md.txt
@@ -297,6 +297,10 @@ Each directory contains:
writemostly - device will only be subject to read
requests if there are no other options.
This applies only to raid1 arrays.
+ blocked - device has failed, metadata is "external",
+ and the failure hasn't been acknowledged yet.
+ Writes that would write to this device if
+ it were not faulty are blocked.
spare - device is working, but not a full member.
This includes spares that are in the process
of being recovered to
@@ -306,6 +310,12 @@ Each directory contains:
Writing "remove" removes the device from the array.
Writing "writemostly" sets the writemostly flag.
Writing "-writemostly" clears the writemostly flag.
+ Writing "blocked" sets the "blocked" flag.
+ Writing "-blocked" clear the "blocked" flag and allows writes
+ to complete.
+
+ This file responds to select/poll. Any change to 'faulty'
+ or 'blocked' causes an event.
errors
An approximate count of read errors that have been detected on
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