From: Cliff Wickman <[email protected]> Make non-cyclic the default, as it is faster.
Dumping a 1TB memory is successful with a crashkernel=512M. And allow -Y on the command line, as well as --non-cylic. Signed-off-by: Cliff Wickman <[email protected]> --- makedumpfile.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) Index: makedumpfile.mmap/makedumpfile.c =================================================================== --- makedumpfile.mmap.orig/makedumpfile.c +++ makedumpfile.mmap/makedumpfile.c @@ -8585,13 +8585,14 @@ main(int argc, char *argv[]) initialize_tables(); /* - * By default, makedumpfile works in constant memory space. + * By default, makedumpfile makes one pass through page structures. + * Use --cyclic-buffer to work in constant memory space. */ - info->flag_cyclic = TRUE; + info->flag_cyclic = FALSE; info->block_order = DEFAULT_ORDER; message_level = DEFAULT_MSG_LEVEL; - while ((opt = getopt_long(argc, argv, "b:cDd:EFfg:hi:lMpRrsvXx:", longopts, + while ((opt = getopt_long(argc, argv, "b:cDd:EFfg:hi:lMpRrsvXx:Y", longopts, NULL)) != -1) { switch (opt) { case 'A': @@ -8694,6 +8695,8 @@ main(int argc, char *argv[]) break; case 'Z': info->bufsize_cyclic = atoi(optarg); + if (info->bufsize_cyclic) + info->flag_cyclic = TRUE; break; case '?': MSG("Commandline parameter is invalid.\n"); _______________________________________________ kexec mailing list [email protected] http://lists.infradead.org/mailman/listinfo/kexec
