NEX-9338 improve the layout of the crash directory
Reviewed by: Sanjay Nadkarni <sanjay.nadkarni@nexenta.com>
Reviewed by: Steve Peng <steve.peng@nexenta.com>

@@ -16,15 +16,16 @@
        boots.
 
 
        Depending on the dumpadm(1M) configuration savecore saves either the
        compressed or uncompressed crash dump. The compressed crash dump is
-       saved in the file directory/vmdump.n.  savecore saves the uncompressed
-       crash dump data in the file directory/vmcore.n and the kernel's
-       namelist in directory/unix.n. The trailing n in the pathnames is
-       replaced by a number which grows every time savecore is run in that
-       directory.
+       saved in the file directory/data/uuid/vmdump.n, where uuid is the OS
+       instance UUID of the image that crashed.  savecore saves the
+       uncompressed crash dump data in the file directory/data/uuid/vmcore.n
+       and the kernel's namelist in directory/data/uuid/unix.n. The trailing n
+       in the pathnames is replaced by a number which grows every time
+       savecore is run in that directory.
 
 
        Before writing out a crash dump, savecore reads a number from the file
        directory/minfree. This is the minimum number of kilobytes that must
        remain free on the file system containing directory. If after saving

@@ -81,24 +82,25 @@
        The following operands are supported:
 
        directory
                     Save the crash dump files to the specified directory. If
                     directory is not specified, savecore saves the crash dump
-                    files to the default savecore directory, configured by
-                    dumpadm(1M).
+                    to the default savecore directory, configured by
+                    dumpadm(1M), and files are stored under distinct
+                    directory/data/uuid folder.
 
 
 FILES
-       directory/vmdump.n
+       directory/data/uuid/vmdump.n
 
 
 
-       directory/vmcore.n
+       directory/data/uuid/vmcore.n
 
 
 
-       directory/unix.n
+       directory/data/uuid/unix.n
 
 
 
        directory/bounds
 

@@ -134,6 +136,6 @@
        savecore very soon after booting, before the swap space containing the
        crash dump is overwritten by programs currently running.
 
 
 
-                               January 30, 2013                   SAVECORE(1M)
+                                January 8, 2017                   SAVECORE(1M)