It tries to keep --help output and manpage in sync.
Signed-off-by: CAI Qian <[email protected]>
diff --git a/makedumpfile.c b/makedumpfile.c
index 8a90baa..8467fb9 100644
--- a/makedumpfile.c
+++ b/makedumpfile.c
@@ -694,6 +694,18 @@ print_usage(void)
MSG(" Rearrange the dump data in the flattened format from the standard input\n");
MSG(" to a readable DUMPFILE.\n");
MSG("\n");
+ MSG(" [--split]:\n");
+ MSG(" Split the dump data to multiple DUMPFILEs in parallel. If specifying DUMPFILEs\n");
+ MSG(" on different storage devices, a device can share I/O load with other devices\n");
+ MSG(" and it reduces time for saving the dump data. The file size of each DUMPFILE is\n");
+ MSG(" smaller than the system memory size which is divided by the number of DUMPFILEs.\n");
+ MSG(" This feature supports only the kdump-compressed format.\n");
+ MSG("\n");
+ MSG(" [--reassemble]:\n");
+ MSG(" Reassemble multiple DUMPFILEs, which are created by --split option, into one\n");
+ MSG(" DUMPFILE. dumpfile1 and dumpfile2 are reassembled into dumpfile on the following\n");
+ MSG(" example.\n");
+ MSG("\n");
MSG(" [--xen-syms XEN-SYMS]:\n");
MSG(" Specify the XEN-SYMS to analyze Xen's memory usage.\n");
MSG("\n");
@@ -735,6 +747,13 @@ print_usage(void)
MSG(" of virtual address. If specifing the VIRTUAL_ADDRESS, its physical\n");
MSG(" address is printed.\n");
MSG("\n");
+ MSG(" [--dump-dmesg]:\n");
+ MSG(" This option overrides the normal behavior of makedumpfile. Instead of\n");
+ MSG(" compressing and filtering a VMCORE to make it smaller, it simply\n");
+ MSG(" extracts the dmesg log from a VMCORE and writes it to the specified\n");
+ MSG(" LOGFILE. If a VMCORE does not contain VMCOREINFO for dmesg, it is\n");
+ MSG(" necessary to specfiy [-x VMLINUX] or [-i VMCOREINFO].\n");
+ MSG("\n");
MSG(" [-D]:\n");
MSG(" Print debugging message.\n");
MSG("\n");
@@ -744,6 +763,10 @@ print_usage(void)
MSG(" [-h]:\n");
MSG(" Show help message.\n");
MSG("\n");
+ MSG(" [-b <order>]\n");
+ MSG(" cache 2^order pages in ram when generating vmcore info before writing to\n");
+ MSG(" output\n");
+ MSG("\n");
MSG(" [-v]:\n");
MSG(" Show the version of makedumpfile.\n");
MSG("\n");
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