New imagevalidate tool for printing/checking/updating image metadata.
This should be run whenever an image is created or updated and possibly periodically over existing images. It makes sure that various image metadata fields are up to date: * hash: the SHA1 hash of the image. This field has been around for awhile and was previously maintained by "imagehash". * size: the size of the image file. * range: the sector range covered by the uncompressed image data. * mtime: modification time of the image. This is the "updated" datetime field in the DB. Its intent was always to track the update time of the image, but it wasn't always exact (create-image would update this with the current time at the start of the image capture process). Documentation? Umm...the usage message is comprehensive! It sports a variety of useful options, but the basics are: * imagevalidate -p <image> ... Print current DB metadata for indicated images. <image> can either be a <pid>/<imagename> string or the numeric imageid. * imagevalidate <image> ... Check the mtime, size, hash, and image range of the image file and compare them to the values in the DB. Whine for ones which are out of date. * imagevalidate -u <image> ... Compare and then update DB metadata fields that are out of date. Fixed a variety of scripts that either used imagehash or computed the SHA1 hash directly to now use imagevalidate.
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