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lvconvert: fix lockd LV locking

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Request a transient LV lock from lvmlockd when
converting an LV.  If the LV is inactive when
lvconvert is run, the LV lock will be acquired
and then released when the command is done.
If the LV is active, a persistent lock exists
already and the transient lock request does nothing.

This fixes the issue that had been mentioned in the
comment previously.
This commit is contained in:
David Teigland 2015-08-11 12:12:22 -05:00
parent 53c08f0bba
commit 819dc1845e
1 changed files with 5 additions and 7 deletions
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12
tools/lvconvert.c
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@ -3427,14 +3427,12 @@ static int lvconvert_single(struct cmd_context *cmd, struct lvconvert_params *lp
} }
/* /*
* If the lv is inactive before and after the command, the * Request a transient lock. If the LV is active, it has a persistent
* use of PERSISTENT here means the lv will remain locked as * lock already, and this request does nothing. If the LV is not
* an effect of running the lvconvert. * active, this acquires a transient lock that will be released when
* To unlock it, it would need to be activated+deactivated. * the command exits.
* Or, we could identify the commands for which the lv remains
* inactive, and not use PERSISTENT here for those cases.
*/ */
if (!lockd_lv(cmd, lv, "ex", LDLV_PERSISTENT)) if (!lockd_lv(cmd, lv, "ex", 0))
goto_bad; goto_bad;
/* /*