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31 * SCSI disk depop (head depopulation) support
33 * The standard defines 'storage elements' as the generic way of referring to a
34 * disk drive head. Each storage element has an identifier and an active status.
35 * The health of an element can be queried. Active elements may be removed from
36 * service with a REMOVE ELEMENT AND TRUNCATE (RET) command. Inactive element
37 * may be returned to service with a RESTORE ELEMENTS AND REBUILD (RER)
38 * command. GET PHYSICAL ELEMENT STATUS (GPES) will return a list of elements,
39 * their health, whether they are in service, how much capacity the element is
42 * When a depop operation starts, the drive becomes format corrupt. No normal
43 * I/O can be done to the drive and a limited number of CDBs will
44 * succeed. Status can be obtained by either a TEST UNIT READY or a GPES
45 * command. A drive reset will not stop a depop operation, but a power cycle
46 * will. A failed depop operation will be reported when the next TEST UNIT READY
47 * is sent to the drive. Drives that are format corrupt after an interrupted
48 * operation need to have that operation repeated.
50 * 'depop' provides a wrapper around all these functions.
53 #include <sys/types.h>
63 #include <cam/cam_debug.h>
64 #include <cam/cam_ccb.h>
65 #include <cam/scsi/scsi_all.h>
66 #include <cam/scsi/scsi_message.h>
68 #include <scsi_wrap.h>
69 #include "camcontrol.h"
79 depop_list(struct cam_device *device, int task_attr, int retry_count,
80 int timeout, int verbosemode __unused)
84 struct scsi_get_physical_element_hdr *hdr;
85 struct scsi_get_physical_element_descriptor *dtor_ptr;
87 hdr = scsi_wrap_get_physical_element_status(device, task_attr, retry_count, timeout,
88 SCSI_GPES_FILTER_ALL | SCSI_GPES_REPORT_TYPE_PHYS, 1);
90 errx(1, "scsi_wrap_get_physical_element_status returned an error");
93 * OK, we have the data, not report it out.
95 dtor_ptr = (struct scsi_get_physical_element_descriptor *)(hdr + 1);
96 dtors = scsi_4btoul(hdr->num_descriptors);
97 printf("Elem ID * Health Capacity\n");
98 for (uint32_t i = 0; i < dtors; i++) {
99 uint32_t id = scsi_4btoul(dtor_ptr[i].element_identifier);
100 uint8_t ralwd = dtor_ptr[i].ralwd;
101 uint8_t type = dtor_ptr[i].physical_element_type;
102 uint8_t health = dtor_ptr[i].physical_element_health;
103 uint64_t cap = scsi_8btou64(dtor_ptr[i].capacity);
104 if (type != GPED_TYPE_STORAGE)
105 printf("0x%08x -- type unknown %d\n", id, type);
107 printf("0x%08x %c 0x%02x %jd\n", id, ralwd ? '*' : ' ', health, cap);
109 printf("* -- Element can be restored\n");
116 depop_remove(struct cam_device *device, int task_attr, int retry_count,
117 int timeout, int verbosemode __unused, uint32_t elem, uint64_t capacity)
122 ccb = cam_getccb(device);
124 warnx("Can't allocate ccb");
127 scsi_remove_element_and_truncate(&ccb->csio,
135 /* Disable freezing the device queue */
136 ccb->ccb_h.flags |= CAM_DEV_QFRZDIS;
137 if (cam_send_ccb(device, ccb) < 0) {
138 warn("error sending GET PHYSICAL ELEMENT STATUS command");
143 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
144 cam_error_print(device, ccb, CAM_ESF_ALL,
145 CAM_EPF_ALL, stderr);
155 depop_restore(struct cam_device *device, int task_attr, int retry_count,
156 int timeout, int verbosemode __unused)
161 ccb = cam_getccb(device);
163 warnx("Can't allocate ccb");
166 scsi_restore_elements_and_rebuild(&ccb->csio,
173 /* Disable freezing the device queue */
174 ccb->ccb_h.flags |= CAM_DEV_QFRZDIS;
175 if (cam_send_ccb(device, ccb) < 0) {
176 warn("error sending GET PHYSICAL ELEMENT STATUS command");
181 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
182 cam_error_print(device, ccb, CAM_ESF_ALL,
183 CAM_EPF_ALL, stderr);
192 #define MUST_BE_NONE() \
193 if (action != DEPOP_NONE) { \
194 warnx("Use only one of -d, -l, or -r"); \
200 depop(struct cam_device *device, int argc, char **argv, char *combinedopt,
201 int task_attr, int retry_count, int timeout, int verbosemode)
204 int action = DEPOP_NONE;
208 uint64_t capacity = 0;
210 while ((c = getopt(argc, argv, combinedopt)) != -1) {
213 capacity = strtoumax(optarg, &endptr, 0);
214 if (*endptr != '\0') {
215 warnx("Invalid capacity: %s", optarg);
221 elem = strtoul(optarg, &endptr, 0);
222 if (*endptr != '\0') {
223 warnx("Invalid element: %s", optarg);
230 action = DEPOP_REMOVE;
238 action = DEPOP_RESTORE;
246 * Compute a sane timeout if none given. 5 seconds for the list command
247 * and whatever the block device characteristics VPD says for other
248 * depop commands. If there's no value in that field, default to 1
249 * day. Experience has shown that these operations take the better part
250 * of a day to complete, so a 1 day timeout default seems appropriate.
252 if (timeout == 0 && action != DEPOP_NONE) {
253 if (action == DEPOP_LIST) {
256 struct scsi_vpd_block_device_characteristics *bdc;
258 timeout = 24 * 60 * 60 * 1000; /* 1 day */
259 bdc = scsi_wrap_vpd_block_device_characteristics(device);
261 timeout = scsi_4btoul(bdc->depopulation_time);
269 warnx("Must specify one of -d, -l, or -r");
273 if (elem == 0 && capacity == 0) {
274 warnx("Must specify at least one of -e and/or -c");
278 error = depop_remove(device, task_attr, retry_count, timeout,
279 verbosemode, elem, capacity);
282 error = depop_restore(device, task_attr, retry_count, timeout,
286 error = depop_list(device, task_attr, retry_count, timeout,