mpath_persistent_reserve_out - send PROUT command to DM device

#include <mpath_persist.h>

int mpath_persistent_reserve_out(int fd, int rq_servact, struct prin_resp *resp, int noisy, int verbose)

The function in the mpath_persistent_reserve_out () sends PROUT command to the DM device and gets the response.

The file descriptor of a multipath device. Input argument.
PROUT command service action. Input argument.
Persistent reservation scope. The value should be always LU_SCOPE (0h).
Persistent reservation type. The valid values of persistent reservation types are:
5h (Write exclusive - registrants only).
6h (Exclusive access - registrants only).
7h (Write exclusive - All registrants).
8h (Exclusive access - All registrants).
PROUT command parameter data. The paramp is a struct which describes PROUT parameter list. Caller should manage the memory allocation of this structure.
Turn on debugging trace: Input argument. 0->Disable, 1->Enable.
Set verbosity level. Input argument. value: 0 to 3. 0->Errors, 1->Warnings, 2->Info, 3->Debug.

If PR command successful else returns any one of the status mentioned below.
If syntax error or invalid parameter.
If command fails with [sk,asc,ascq: 0x2,*,*].
If command fails with [sk,asc,ascq: 0x3,*,*].
If command fails with [sk,asc,ascq: 0x4,*,*].
If command fails with [sk,asc,ascq: 0x5,0x20,0x0].
If command fails with [sk,asc,ascq: 0x5,*,*].
If command fails with [sk,asc,ascq: 0x6,*,*].
If command fails with [sk,asc,ascq: 0xb,*,*].
If command fails with [sk,asc,ascq: 0x0,*,*].
If command fails with SCSI command malformed.
If command fails while accessing file (device node) problems(e.g. not found).
If Device Mapper related error.(e.g Error in getting dm info).
If other error/warning has occurred(e.g transport or driver error).
If command fails with reservation conflict.


multipath-tools was developed by Christophe Varoqui <> and others.

2018-06-15 Linux