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Re: [Xen-devel] [PATCH] tools/hotplug/Linux: forced to release lock if h
| To: | Kouya Shimura <kouya@xxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] tools/hotplug/Linux: forced to release lock if holder process is gone |
| From: | Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> |
| Date: | Tue, 14 Dec 2010 17:16:37 +0000 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Tue, 14 Dec 2010 09:17:36 -0800 |
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Kouya Shimura writes ("[Xen-devel] [PATCH] tools/hotplug/Linux: forced to
release lock if holder process is gone"):
> When a script using locking.sh is stopped by ctrl-C, the lock file remains.
> We have to wait 100 seconds for releasing the lock at the next time.
Thanks, I have applied your patch.
This kind of thing is one reason why lockfiles where the lock is
regarded as held if the file exists are horrible. It's a shame that
we don't have any fcntl/flock style locking primitives available in
shell.
Ian.
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