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Ran 07 Sep 2015 02:53PM UTC

Files 76

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Committed 07 Sep 2015 02:53PM UTC coverage: 31.605% (-0.02%) from 31.629%

Job # 154.1

Build Type

push

travis-ci

Committed by

chandrikas

Commit Message

CA-155766 Fix race between lvchange and tap-ctl open

The new lvm2 code shipped with CentOS 7 has a different
behaviour from the previous one since it de-activates
a logical volume while changing permission from "rw" to
"r". This change implies that if 'lvchange -p r' is executed
whlile a tap-ctl open is happening a volume in the chain can
just disappear and the open fails with the error mentioned
in CA-155766.

I have enforced:

- a lv lock for every lvchange -p
- a lock for every lv in the chain while executing
  tap-ctl open

Signed-off-by: Stefano Panella <stefano.panella@citrix.com>
Reviewed-by: Jorge Calvo Martin <jorgema@citrix.com>

GitHub: closes xapi-project/sm#258

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6133 of 19405 relevant lines covered (31.61%)

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