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zipl: Add --no-compress option to zipl command

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Add --no-compress option to explicitly omit compression for single-volume
DASD dumper. Used primarily for test purposes.

Since only the lowest byte of mvdump_force field (struct
stage2dump_parm_tail) has been used, split it in two byte fields and use
one for the new no_compress attribute.

Update zipl help and zipl man page with the new parameter info.

Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Mikhail Zaslonko
2023-05-31 09:33:38 +02:00
committed by Jan Höppner
parent c08794bdfb
commit c61783546b
9 changed files with 31 additions and 8 deletions
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3
include/dump/s390_dump.h
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@@ -40,7 +40,8 @@ enum df_s390_arch {
*/
struct stage2dump_parm_tail {
char reserved[6];
uint16_t mvdump_force;
uint8_t no_compress;
uint8_t mvdump_force;
uint64_t mem_upper_limit;
} __packed;