On 2014-09-22 17:32:57, Kenneth Waegeman wrote: > Hi all, Hi Kenneth > > > We want to use ecryptfs on GPFS. How does ecryptfs handles locking if an > encrypted directory is mounted on different boxes ? Is data corruption > possible while writing? eCryptfs is not well suited for being stacked on top of a distributed file system such as GPFS. That would result in each node having its own eCryptfs mount. Each eCryptfs mount has its own page cache. eCryptfs doesn't do any sort of coordination between remote mounts and there's no way for the lower filesystem to make eCryptfs aware that file contents, which may be in the eCryptfs page cache, have been modified by a remote node. That means that if a file is read into the eCryptfs page cache on node A and then that file is updated on node B, node A will never know an update has been made and will never invalidate the old, cached file contents from its page cache. > > Another question: Is there an easy way to re-encrypt a directory with > another key? (when having compromised key or so). Unfortunately, no. You'd need to set up a new eCryptfs mount, with a new key, and copy the files between the two eCryptfs mounts. Tyler > > > Thank you!! > > Kenneth > > > -- > To unsubscribe from this list: send the line "unsubscribe ecryptfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html
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