* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*/
+#define HAVE_STDINT_H 1
#include "mdadm.h"
#include "mdmon.h"
+#include "sha1.h"
#include <values.h>
#include <scsi/sg.h>
#include <ctype.h>
}
}
+static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info);
+
static void brief_examine_super_imsm(struct supertype *st)
{
- printf("ARRAY /dev/imsm metadata=imsm\n");
+ /* We just write a generic DDF ARRAY entry
+ */
+ struct mdinfo info;
+ char nbuf[64];
+
+ getinfo_super_imsm(st, &info);
+ fname_from_uuid(st, &info, nbuf,'-');
+ printf("ARRAY /dev/imsm metadata=imsm UUID=%s\n", nbuf + 5);
}
static void detail_super_imsm(struct supertype *st, char *homehost)
static void brief_detail_super_imsm(struct supertype *st)
{
- printf("%s\n", __FUNCTION__);
+ struct mdinfo info;
+ char nbuf[64];
+ getinfo_super_imsm(st, &info);
+ fname_from_uuid(st, &info, nbuf,'-');
+ printf(" UUID=%s", nbuf + 5);
}
#endif
{
printf("%s\n", __FUNCTION__);
- return 0;
+ return -1;
}
static void uuid_from_super_imsm(struct supertype *st, int uuid[4])
{
- /* imsm does not track uuid's so just make sure we never return
- * the same value twice to break uuid matching in Manage_subdevs
- * FIXME what about the use of uuid's with bitmap's?
+ /* The uuid returned here is used for:
+ * uuid to put into bitmap file (Create, Grow)
+ * uuid for backup header when saving critical section (Grow)
+ * comparing uuids when re-adding a device into an array
+ * In these cases the uuid required is that of the data-array,
+ * not the device-set.
+ * uuid to recognise same set when adding a missing device back
+ * to an array. This is a uuid for the device-set.
+ *
+ * For each of these we can make do with a truncated
+ * or hashed uuid rather than the original, as long as
+ * everyone agrees.
+ * In each case the uuid required is that of the data-array,
+ * not the device-set.
+ */
+ /* imsm does not track uuid's so we synthesis one using sha1 on
+ * - The signature (Which is constant for all imsm array, but no matter)
+ * - the family_num of the container
+ * - the index number of the volume
+ * - the 'serial' number of the volume.
+ * Hopefully these are all constant.
*/
- static int dummy_id = 0;
+ struct intel_super *super = st->sb;
- uuid[0] = dummy_id++;
+ char buf[20];
+ struct sha1_ctx ctx;
+ struct imsm_dev *dev = NULL;
+
+ sha1_init_ctx(&ctx);
+ sha1_process_bytes(super->anchor->sig, MAX_SIGNATURE_LENGTH, &ctx);
+ sha1_process_bytes(&super->anchor->family_num, sizeof(__u32), &ctx);
+ if (super->current_vol >= 0)
+ dev = get_imsm_dev(super, super->current_vol);
+ if (dev) {
+ __u32 vol = super->current_vol;
+ sha1_process_bytes(&vol, sizeof(vol), &ctx);
+ sha1_process_bytes(dev->volume, MAX_RAID_SERIAL_LEN, &ctx);
+ }
+ sha1_finish_ctx(&ctx, buf);
+ memcpy(uuid, buf, 4*4);
}
#if 0
devnum2devname(st->container_dev),
info->container_member);
info->safe_mode_delay = 4000; /* 4 secs like the Matrix driver */
+ uuid_from_super_imsm(st, info->uuid);
}
info->safe_mode_delay = 0;
info->disk.number = -1;
info->disk.state = 0;
+ info->name[0] = 0;
if (super->disks) {
disk = &super->disks->disk;
info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0;
info->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0;
}
+ uuid_from_super_imsm(st, info->uuid);
}
static int update_super_imsm(struct supertype *st, struct mdinfo *info,
st->minor_version = 0;
st->max_devs = IMSM_MAX_DEVICES;
}
+ st->loaded_container = 1;
return 0;
}
st->minor_version = 0;
st->max_devs = IMSM_MAX_DEVICES;
}
+ st->loaded_container = 0;
return 0;
}