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Now that wp-supercache has some built in support for CDNs, I've tried using the CDN Sync Tool to do an initial upload of files to Cloudfront.

But, I'm getting 2 sets of errors when syncing (I'm having to use force upload, as for some reason CDN Sync Tool thinks all my files have been uploaded already).

  1. cURL error: Failed to open/read local data from file/application (26) This error isn't actually preventing the files from being uploaded though

  2. [function.fopen]: failed to open stream: Too many open files in /var/www/xxxxx/wp-content/plugins/cdn-sync-tool/lib/awssdk/lib/requestcore/requestcore.class.php This error does stop files from being uploaded -> S3.

So, the 2nd error occurs after a certain (changeable) number of files have been uploaded, and then affects all remaining uploads.

Any ideas why or what can be done?

[Update]

After updating to version 0.9, am now getting the following errors repeatedly (after about 2000 files have been synced)

Warning: fclose(): supplied argument is not a valid stream resource in [filepath]/lib/awssdk/lib/requestcore/requestcore.class.php on line 276

The stream size for the streaming upload cannot be determined. done

Syncing [2411/4732] img2343435.jpg

Warning: fopen(/var/www/xx/wp-content/uploads/2010/12/mg2343435.jpg) [function.fopen]: failed to open stream: No such file or directory in [filepath]/lib/awssdk/lib/requestcore/requestcore.class.php on line 527

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What OS you running? As this actually sounds like an AWS php sdk issue. Having a look though their source code shows they don't seem to use fclose and your OS must have a limit on open files.

If you email me at iain.cambridge - at - fubra.com I'll send you a copy of the sdk with a bug fix aswell.

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  • If possible, it would be very helpful if you could post that bug fix here (or post it elsewhere and link to there) so others can benefit from it in the future.
    – Rarst
    Commented Jan 19, 2011 at 17:26
  • @Backie - Ubuntu 9.04. ulimit -a shows that open files is set to the default (1024). I'll increase this to 4096 and see if the error repeats. Any idea about the initial curl error?
    – anu
    Commented Jan 20, 2011 at 9:49
  • @anu - added fclose to aws sdk copy and be found github.com/icambridge/aws-sdk-for-php also seems that the curl Error is just because the post fields are empty. I have no idea why.
    – Backie
    Commented Jan 20, 2011 at 10:27
  • Actually seems all that needs done is upgrade the aws-sdk-for-php as the core one has a fix and my fork's fix is redundant. I'll release an updated version of the plugin tomorrow with the new sdk version.
    – Backie
    Commented Jan 20, 2011 at 18:32
  • @Backie - tested the latest version (0.9b), and still getting multiple upload errors, but a slightly different error message now - I'll update the question with the new error.
    – anu
    Commented Jan 21, 2011 at 9:55

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