Introduce -K option to enable cyclic processing. If -K option is specified,
then makedumpfile works cyclically and the memory usage will be constant.
Usage:
# makedumpfile -K /proc/vmcore dumpfile
Signed-off-by: Atsushi Kumagai <kumagai-atsushi at mxc.nes.nec.co.jp>
---
makedumpfile.c | 5 ++++-
makedumpfile.h | 1 +
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/makedumpfile.c b/makedumpfile.c
index d024e95..3e5f906 100644
--- a/makedumpfile.c
+++ b/makedumpfile.c
@@ -6968,7 +6968,7 @@ main(int argc, char *argv[])
info->block_order = DEFAULT_ORDER;
message_level = DEFAULT_MSG_LEVEL;
- while ((opt = getopt_long(argc, argv, "b:cDd:EFfg:hi:lMRrsvXx:", longopts,
+ while ((opt = getopt_long(argc, argv, "b:cDd:EFfg:hi:KlMRrsvXx:", longopts,
NULL)) != -1) {
switch (opt) {
case 'b':
@@ -7017,6 +7017,9 @@ main(int argc, char *argv[])
goto out;
info->flag_sadump_diskset = 1;
break;
+ case 'K':
+ info->flag_cyclic = TRUE;
+ break;
case 'l':
info->flag_compress = DUMP_DH_COMPRESSED_LZO;
break;
diff --git a/makedumpfile.h b/makedumpfile.h
index 6f5489d..c588e43 100644
--- a/makedumpfile.h
+++ b/makedumpfile.h
@@ -801,6 +801,7 @@ struct DumpInfo {
int flag_rearrange; /* flag of creating dumpfile from
flattened format */
int flag_split; /* splitting vmcore */
+ int flag_cyclic; /* cyclic processing to keep memory consumption */
int flag_reassemble; /* reassemble multiple dumpfiles into one */
int flag_refiltering; /* refilter from kdump-compressed file */
int flag_force; /* overwrite existing stuff */
--
1.7.9.2
