Mark, I'm sure this is going to seam random but... I'm seeing the same error as you were in Sept of 2011 (I know) that you reported in the mailing list. The error steps from an debug check that reports: CacheFiles: Error: Unexpected object collision I know you reported that issue but I didn't see any follow up after that. Was there something that fixed the issue for you? I'm impleting fscache for cephfs and I've ran into the same issue. Thanks, - Milosz -- Linux-cachefs mailing list Linux-cachefs@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cachefs