On s390 we have stand-alone dump tools that write the dump directly to a block device partition. It is possible to use the partition device node instead of a dump file when running crash. When we do that, everything works fine but we get the following (a bit misleading) warning: WARNING: /dev/sda1: may be truncated or incomplete PT_LOAD p_offset: 16384 p_filesz: 5497558138880 bytes required: 5497558155264 dumpfile size: 0 Fix this and print the following info message for block devices: NOTE: /dev/sda1: No dump complete check for block devices Signed-off-by: Michael Holzheu <holzheu(a)linux.vnet.ibm.com&gt; --- netdump.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/netdump.c +++ b/netdump.c @@ -605,6 +605,11 @@ check_dumpfile_size(char *file) if (stat64(file, &stat) < 0) return; + if (S_ISBLK(stat.st_mode)) { + error(NOTE, "%s: No dump complete check for block devices\n", + file); + return; + } for (i = 0; i < nd->num_pt_load_segments; i++) { pls = &nd->pt_load_segments[i];