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|
---
libmultipath/checkers.h | 3 +
libmultipath/checkers/Makefile | 4 +
libmultipath/checkers/tur.c | 111 +++++++++++++++++++++++++++++++++++++++++
multipath.conf.annotated | 5 +
4 files changed, 121 insertions(+), 2 deletions(-)
Index: multipath-tools/libmultipath/checkers.h
===================================================================
--- multipath-tools.orig/libmultipath/checkers.h
+++ multipath-tools/libmultipath/checkers.h
@@ -60,6 +60,7 @@ enum path_check_state {
#define DIRECTIO "directio"
#define TUR "tur"
+#define HP_TUR "hp_tur"
#define HP_SW "hp_sw"
#define RDAC "rdac"
#define EMC_CLARIION "emc_clariion"
@@ -91,6 +92,7 @@ enum path_check_state {
#define CHECKER_MSG_LEN 256
#define CHECKER_DEV_LEN 256
#define LIB_CHECKER_NAMELEN 256
+#define WWID_SIZE 128
struct checker {
struct list_head node;
@@ -99,6 +101,7 @@ struct checker {
int disable;
char name[CHECKER_NAME_LEN];
char message[CHECKER_MSG_LEN]; /* comm with callers */
+ char wwid[WWID_SIZE]; /* LUN wwid */
void * context; /* store for persistent data */
void ** mpcontext; /* store for persistent data shared
multipath-wide. Use MALLOC if
Index: multipath-tools/libmultipath/checkers/Makefile
===================================================================
--- multipath-tools.orig/libmultipath/checkers/Makefile
+++ multipath-tools/libmultipath/checkers/Makefile
@@ -8,6 +8,7 @@ LIBS= \
libcheckcciss_tur.so \
libcheckreadsector0.so \
libchecktur.so \
+ libcheckhp_tur.so \
libcheckdirectio.so \
libcheckemc_clariion.so \
libcheckhp_sw.so \
@@ -23,6 +24,9 @@ libcheckdirectio.so: libsg.o directio.o
libcheck%.so: libsg.o %.o
$(CC) $(SHARED_FLAGS) -o $@ $^
+hp_tur.o: tur.c
+ $(CC) $(CFLAGS) -DCHECK_WWID -c -o $@ $<
+
install:
$(INSTALL_PROGRAM) -m 755 $(LIBS) $(DESTDIR)$(libdir)
Index: multipath-tools/libmultipath/checkers/tur.c
===================================================================
--- multipath-tools.orig/libmultipath/checkers/tur.c
+++ multipath-tools/libmultipath/checkers/tur.c
@@ -15,14 +15,101 @@
#include "checkers.h"
+#include "../libmultipath/debug.h"
#include "../libmultipath/sg_include.h"
#define TUR_CMD_LEN 6
#define HEAVY_CHECK_COUNT 10
+#ifdef CHECK_WWID
+#define MSG_TUR_UP "HP tur checker reports path is up"
+#define MSG_TUR_DOWN "HP tur checker reports path is down"
+#define MSG_TUR_GHOST "HP tur checker reports path is in standby state"
+#define EVPD 0x01
+#define PAGE_83 0x83
+#define INQUIRY_CMD 0x12
+#define INQUIRY_CMDLEN 6
+#define SCSI_INQ_BUFF_LEN 96
+#else
#define MSG_TUR_UP "tur checker reports path is up"
#define MSG_TUR_DOWN "tur checker reports path is down"
#define MSG_TUR_GHOST "tur checker reports path is in standby state"
+#endif
+
+#ifdef CHECK_WWID
+static int
+do_inq(struct checker * c, char * wwid)
+{
+ int ret = -1;
+ unsigned char inq_cmd[INQUIRY_CMDLEN] =
+ {INQUIRY_CMD, EVPD, PAGE_83, 0, SCSI_INQ_BUFF_LEN, 0 };
+ unsigned char sense_buffer[32];
+ unsigned char resp_buffer[SCSI_INQ_BUFF_LEN];
+ char *pbuff;
+
+ int m,k;
+ int retry_tur = 5;
+ struct sg_io_hdr io_hdr;
+
+retry:
+ memset(resp_buffer, 0, sizeof(resp_buffer));
+ memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
+
+ io_hdr.interface_id = 'S';
+ io_hdr.cmd_len = sizeof(inq_cmd);
+ io_hdr.mx_sb_len = sizeof(sense_buffer);
+ io_hdr.dxfer_direction = -3; // Data transfer from the device.
+ io_hdr.dxfer_len = sizeof(resp_buffer);
+ io_hdr.dxferp = (unsigned char *)resp_buffer;
+ io_hdr.cmdp = inq_cmd;
+ io_hdr.sbp = sense_buffer;
+ io_hdr.timeout = 60; // IOCTL timeout value.
+
+ if (ioctl(c->fd, SG_IO, &io_hdr) < 0) {
+ condlog(0, "SG_IO ioctl failed: %s", strerror(errno));
+ return ret;
+ }
+ if (io_hdr.info & SG_INFO_OK_MASK){
+ int key = 0, asc, ascq;
+
+ if (io_hdr.host_status == DID_BUS_BUSY ||
+ io_hdr.host_status == DID_ERROR ||
+ io_hdr.host_status == DID_TRANSPORT_DISRUPTED) {
+ if (--retry_tur)
+ goto retry;
+ }
+ if (io_hdr.sb_len_wr > 3) {
+ if (io_hdr.sbp[0] == 0x72 || io_hdr.sbp[0] == 0x73) {
+ key = io_hdr.sbp[1] & 0x0f;
+ asc = io_hdr.sbp[2];
+ ascq = io_hdr.sbp[3];
+ } else if (io_hdr.sb_len_wr > 13 &&
+ ((io_hdr.sbp[0] & 0x7f) == 0x70 ||
+ (io_hdr.sbp[0] & 0x7f) == 0x71)) {
+ key = io_hdr.sbp[2] & 0x0f;
+ asc = io_hdr.sbp[12];
+ ascq = io_hdr.sbp[13];
+ }
+ }
+ if (key == 0x6) {
+ /* Unit Attention, retry */
+ if (--retry_tur)
+ goto retry;
+ }
+ return ret;
+ }
+
+ pbuff = (char *) resp_buffer;
+
+ wwid[0] = '3';
+ for (m = 8, k = 1; m < 11; ++m, k+=2)
+ sprintf(&wwid[k], "%02x", (unsigned int)pbuff[m] & 0xff);
+ for (m = 11; m < 24; ++m, k+=2)
+ sprintf(&wwid[k], "%02x", (unsigned int)pbuff[m] & 0xff);
+
+ return (ret = 0);
+}
+#endif
struct tur_checker_context {
void * dummy;
@@ -30,6 +117,9 @@ struct tur_checker_context {
int libcheck_init (struct checker * c)
{
+#ifdef CHECK_WWID
+ memset(c->wwid, 0, WWID_SIZE);
+#endif
return 0;
}
@@ -45,6 +135,9 @@ libcheck_check (struct checker * c)
unsigned char turCmdBlk[TUR_CMD_LEN] = { 0x00, 0, 0, 0, 0, 0 };
unsigned char sense_buffer[32];
int retry_tur = 5;
+#ifdef CHECK_WWID
+ char wwid[WWID_SIZE];
+#endif
retry:
memset(&io_hdr, 0, sizeof (struct sg_io_hdr));
@@ -110,6 +203,24 @@ libcheck_check (struct checker * c)
MSG(c, MSG_TUR_DOWN);
return PATH_DOWN;
}
+#ifdef CHECK_WWID
+ if (!do_inq(c, wwid)) {
+
+ if(!strcmp(c->wwid, "\0")) {
+ strcpy(c->wwid, wwid);
+ goto up;
+ }
+
+ if (strcmp(c->wwid , wwid)) {
+ condlog(0,
+ "hp_tur: Lun collided. new_wwid %s old_wwid %s",
+ wwid, c->wwid);
+ MSG(c, MSG_TUR_DOWN);
+ return PATH_DOWN;
+ }
+ }
+up:
+#endif
MSG(c, MSG_TUR_UP);
return PATH_UP;
}
Index: multipath-tools/multipath.conf.annotated
===================================================================
--- multipath-tools.orig/multipath.conf.annotated
+++ multipath-tools/multipath.conf.annotated
@@ -86,7 +86,8 @@
# # name : path_checker, checker
# # scope : multipath & multipathd
# # desc : the default method used to determine the paths' state
-# # values : readsector0|tur|emc_clariion|hp_sw|directio|rdac|cciss_tur
+# # values : readsector0|tur|emc_clariion|hp_sw|directio|rdac|
+# cciss_tur|hp_tur
# # default : directio
# #
# path_checker directio
@@ -456,7 +457,7 @@
# # scope : multipathd
# # desc : path checking alorithm to use to check path state
# # values : readsector0|tur|emc_clariion|hp_sw|directio|rdac|
-# # cciss_tur
+# # cciss_tur|hp_tur
# #
# path_checker directio
#
|
