[Tikzdevice-bugs] Error in createLockFile(lockname) : cannot create lock file

[Cameron Bracken]

Vegard,

Thanks, we had a report of this a while back and our suggestion then was:

> You need to look for a file (it may not be in your project directory) that contains "___LOCK" in its file name and delete it.  filehash creates this to prevent multiple writes to the same file at the same time and somehow it did not get removed correctly.

So if you encounter this again, the only real solution I know if is to
remove this file manually, since this is a file created by filehash.

-Cameron



On Mon, May 23, 2011 at 7:51 AM, Vegard Nossum <vegard.nossum at gmail.com> wrote:
> Hi,
>
> I got this error:
>
>> tikz(file="plot.tex")
>> cr.plots(lm(A ~ B, data = C), ask = F)
> Error in createLockFile(lockname) : cannot create lock file
>
> By some googling, I found a similar report (with no replies):
>
> http://r.789695.n4.nabble.com/debug-R-device-plot-tt3403638.html
>
> So what's wrong is that I had earlier aborted cr.plots() by pressing
> ctrl-C, and it appears that somebody didn't clean up the
> tikzMetricDictionary lock file. Moreover, tikzDevice appears to
> proceed to call close(-1) if creating the file fails (strace output):
>
> open("/tmp/Rtmp1HU5cv/tikzMetricsDictionary", O_RDONLY) = 4
> open("/tmp/Rtmp1HU5cv/tikzMetricsDictionary___LOCK",
> O_WRONLY|O_CREAT|O_EXCL, 0666) = -1 EEXIST (File exists)
> close(4294967295)                       = -1 EBADF (Bad file descriptor)
> write(2, "Error in createLockFile(lockname"..., 60) = 60
>
> Removing the ___LOCK file fixed things for me.
>
> Just wanted to let you know. My version of R is 2.10.0 (2009-10-26)
> and my version of tikzDevice is 0.5.3.
>
>
> Vegard
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