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+Where:          /dev/pstore/...
+Date:           January 2011
+Kernel Version: 2.6.38
+Contact:        tony.luck@intel.com
+Description:    Generic interface to platform dependent persistent storage.
+
+                Platforms that provide a mechanism to preserve some data
+                across system reboots can register with this driver to
+                provide a generic interface to show records captured in
+                the dying moments.  In the case of a panic the last part
+                of the console log is captured, but other interesting
+                data can also be saved.
+
+                # mount -t pstore - /dev/pstore
+
+                $ ls -l /dev/pstore
+                total 0
+                -r--r--r-- 1 root root 7896 Nov 30 15:38 dmesg-erst-1
+
+                Different users of this interface will result in different
+                filename prefixes.  Currently two are defined:
+
+                "dmesg" - saved console log
+                "mce"   - architecture dependent data from fatal h/w error
+
+                Once the information in a file has been read, removing
+                the file will signal to the underlying persistent storage
+                device that it can reclaim the space for later re-use.
+
+                $ rm /dev/pstore/dmesg-erst-1
+
+                The expectation is that all files in /dev/pstore
+                will be saved elsewhere and erased from persistent store
+                soon after boot to free up space ready for the next
+                catastrophe.