OSError: [Errno 17] File exists

until now, it seems that the cached images are used seldom.
may be it's better to disable the cache function now, and enable it in the
future when the reuse case increase.

On 16 December 2011 23:41, Fathi Boudra <email address hidden> wrote:

> ** Changed in: lava-dispatcher
> Milestone: 2011.12 => 2012.01
>
> --
> You received this bug notification because you are a member of Linaro
> Validation Team, which is subscribed to LAVA Dispatcher.
> https://bugs.launchpad.net/bugs/897918
>
> Title:
> OSError: [Errno 17] File exists
>
> Status in LAVA Dispatcher:
> In Progress
>
> Bug description:
> <LAVA_DISPATCHER>2011-11-29 08:12:58 AM INFO: Downloading the
> http://snapshots.linaro.org/oneiric/linaro-o-nano/20111128/0/images/tar/linaro-o-nano-tar-20111128-0.tar.gzfile using cache
> <LAVA_DISPATCHER>2011-11-29 08:22:06 AM ERROR: os.link failed
> Traceback (most recent call last):
> File "/usr/lib/pymodules/python2.7/lava_dispatcher/utils.py", line 63,
> in download_with_cache
> os.link(file_location, cache_loc)
> OSError: [Errno 17] File exists
>
> Looks like there could be a bit of a race if two processes are working
> on the same image at the same time. If the cache location does not
> exist when it starts, it will download the file. It then checks again
> if the cache location exists (well, the directory for it at least),
> and makes it, then links the download file to it. This is not atomic
> of course though, so there's a bit of a window where we could see it
> try to link to something that already exists.
>
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