With minidumps, the dumping partition could be smaller than physical

memory, so checking the size of the partition is not necessary.

Tested by:	kris

1 files changed, 8 insertions, 1 deletions

diff --git a/sbin/dumpon/dumpon.c b/sbin/dumpon/dumpon.c
index df6f88a7e632..9bb5c7e9deea 100644
--- a/sbin/dumpon/dumpon.c
+++ b/sbin/dumpon/dumpon.c
@@ -72,9 +72,16 @@ check_size(int fd, const char *fn)
 	int name[] = { CTL_HW, HW_PHYSMEM };
 	size_t namelen = sizeof name / sizeof *name;
 	unsigned long physmem;
-	size_t len = sizeof physmem;
+	size_t len;
 	off_t mediasize;
+	int minidump;
 
+
+	len = sizeof minidump;
+	if (sysctlbyname("debug.minidump", &minidump, &len, NULL, 0) == 0 &&
+	    minidump == 1)
+		return;
+	len = sizeof physmem;
 	if (sysctl(name, namelen, &physmem, &len, NULL, 0) != 0)
 		err(EX_OSERR, "can't get memory size");
 	if (ioctl(fd, DIOCGMEDIASIZE, &mediasize) != 0)