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Bug #1592962: block.wipe_volume(mode='pvremove') fails on ubuntu precise

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402. By Wesley Wiedenmeier on 2016-08-03

Merge from trunk to bring in unittest fix

401. By Wesley Wiedenmeier on 2016-08-03

Fix log message

400. By Wesley Wiedenmeier on 2016-08-03

In block.wipe_volume when running with mode pvremove, do not use '--cache' flag
on trusty.

Previously, the cache flag was appended to pvscan an vgscan cmds on
all releases other than precise, as precise is the only ubuntu release
currently supported that has lvm tools that do not have the '--cache' flag as
an option.

However, trusty does not by default use lvmetad, and in cases where
lvmetad is not present or is not running, the pvscan and vgscan tools will
exit with a bad return code (5) and will not scan for volumes.

Not appending the '--cache' flag on trusty is preferrable to accepting a bad
return code from pvscan and vgscan, as there are cases where these tools
failing to refresh the nodes in /dev could halt installation or cause problems
for clear_holders

399. By Wesley Wiedenmeier on 2016-08-03

Merge from trunk

398. By Wesley Wiedenmeier on 2016-08-01

Merge from trunk

397. By Wesley Wiedenmeier on 2016-08-01

In block.wipe_volume, instead of using util.lsb_release 'release' value, use
'codename', and only do str comparison instead of conversion to numerical
release value

396. By Wesley Wiedenmeier on 2016-07-26

Added some unittests for block.wipe_volume

395. By Wesley Wiedenmeier on 2016-07-25

Only permit return code of 5 for pvremove command

394. By Wesley Wiedenmeier on 2016-07-22

Merge from trunk

393. By Wesley Wiedenmeier on 2016-06-16

In curtin.block.wipe_volume, when running with mode=pvremove, do not use
--cache flag if the current ubuntu release is older than trusty. The lvscan,
pvscan and vgscan tools on precise do not support this flag