Esempio n. 1
0
/*
 * Solve a given ZFS case.  This first checks to make sure the diagnosis is
 * still valid, as well as cleaning up any pending timer associated with the
 * case.
 */
static void
zfs_case_solve(fmd_hdl_t *hdl, zfs_case_t *zcp, const char *faultname,
    boolean_t checkunusable)
{
	nvlist_t *detector, *fault;
	boolean_t serialize;
	nvlist_t *fru = NULL;
	fmd_hdl_debug(hdl, "solving fault '%s'", faultname);

	/*
	 * Construct the detector from the case data.  The detector is in the
	 * ZFS scheme, and is either the pool or the vdev, depending on whether
	 * this is a vdev or pool fault.
	 */
	detector = fmd_nvl_alloc(hdl, FMD_SLEEP);

	(void) nvlist_add_uint8(detector, FM_VERSION, ZFS_SCHEME_VERSION0);
	(void) nvlist_add_string(detector, FM_FMRI_SCHEME, FM_FMRI_SCHEME_ZFS);
	(void) nvlist_add_uint64(detector, FM_FMRI_ZFS_POOL,
	    zcp->zc_data.zc_pool_guid);
	if (zcp->zc_data.zc_vdev_guid != 0) {
		(void) nvlist_add_uint64(detector, FM_FMRI_ZFS_VDEV,
		    zcp->zc_data.zc_vdev_guid);
	}

	fault = fmd_nvl_create_fault(hdl, faultname, 100, detector,
	    fru, detector);
	fmd_case_add_suspect(hdl, zcp->zc_case, fault);

	nvlist_free(fru);

	fmd_case_solve(hdl, zcp->zc_case);

	serialize = B_FALSE;
	if (zcp->zc_data.zc_has_remove_timer) {
		fmd_timer_remove(hdl, zcp->zc_remove_timer);
		zcp->zc_data.zc_has_remove_timer = 0;
		serialize = B_TRUE;
	}
	if (serialize)
		zfs_case_serialize(hdl, zcp);

	nvlist_free(detector);
}
Esempio n. 2
0
/*
 * Solve a given ZFS case.  This first checks to make sure the diagnosis is
 * still valid, as well as cleaning up any pending timer associated with the
 * case.
 */
static void
zfs_case_solve(fmd_hdl_t *hdl, zfs_case_t *zcp, const char *faultname,
    boolean_t checkunusable)
{
	libzfs_handle_t *zhdl = fmd_hdl_getspecific(hdl);
	nvlist_t *detector, *fault;
	boolean_t serialize;
	nvlist_t *fmri, *fru;
	topo_hdl_t *thp;
	int err;

	/*
	 * Construct the detector from the case data.  The detector is in the
	 * ZFS scheme, and is either the pool or the vdev, depending on whether
	 * this is a vdev or pool fault.
	 */
	detector = fmd_nvl_alloc(hdl, FMD_SLEEP);

	(void) nvlist_add_uint8(detector, FM_VERSION, ZFS_SCHEME_VERSION0);
	(void) nvlist_add_string(detector, FM_FMRI_SCHEME, FM_FMRI_SCHEME_ZFS);
	(void) nvlist_add_uint64(detector, FM_FMRI_ZFS_POOL,
	    zcp->zc_data.zc_pool_guid);
	if (zcp->zc_data.zc_vdev_guid != 0) {
		(void) nvlist_add_uint64(detector, FM_FMRI_ZFS_VDEV,
		    zcp->zc_data.zc_vdev_guid);
	}

	/*
	 * We also want to make sure that the detector (pool or vdev) properly
	 * reflects the diagnosed state, when the fault corresponds to internal
	 * ZFS state (i.e. not checksum or I/O error-induced).  Otherwise, a
	 * device which was unavailable early in boot (because the driver/file
	 * wasn't available) and is now healthy will be mis-diagnosed.
	 */
	if (!fmd_nvl_fmri_present(hdl, detector) ||
	    (checkunusable && !fmd_nvl_fmri_unusable(hdl, detector))) {
		fmd_case_close(hdl, zcp->zc_case);
		nvlist_free(detector);
		return;
	}


	fru = NULL;
	if (zcp->zc_fru != NULL &&
	    (thp = fmd_hdl_topo_hold(hdl, TOPO_VERSION)) != NULL) {
		/*
		 * If the vdev had an associated FRU, then get the FRU nvlist
		 * from the topo handle and use that in the suspect list.  We
		 * explicitly lookup the FRU because the fmri reported from the
		 * kernel may not have up to date details about the disk itself
		 * (serial, part, etc).
		 */
		if (topo_fmri_str2nvl(thp, zcp->zc_fru, &fmri, &err) == 0) {
			/*
			 * If the disk is part of the system chassis, but the
			 * FRU indicates a different chassis ID than our
			 * current system, then ignore the error.  This
			 * indicates that the device was part of another
			 * cluster head, and for obvious reasons cannot be
			 * imported on this system.
			 */
			if (libzfs_fru_notself(zhdl, zcp->zc_fru)) {
				fmd_case_close(hdl, zcp->zc_case);
				nvlist_free(fmri);
				fmd_hdl_topo_rele(hdl, thp);
				nvlist_free(detector);
				return;
			}

			/*
			 * If the device is no longer present on the system, or
			 * topo_fmri_fru() fails for other reasons, then fall
			 * back to the fmri specified in the vdev.
			 */
			if (topo_fmri_fru(thp, fmri, &fru, &err) != 0)
				fru = fmd_nvl_dup(hdl, fmri, FMD_SLEEP);
			nvlist_free(fmri);
		}

		fmd_hdl_topo_rele(hdl, thp);
	}

	fault = fmd_nvl_create_fault(hdl, faultname, 100, detector,
	    fru, detector);
	fmd_case_add_suspect(hdl, zcp->zc_case, fault);

	nvlist_free(fru);

	fmd_case_solve(hdl, zcp->zc_case);

	serialize = B_FALSE;
	if (zcp->zc_data.zc_has_remove_timer) {
		fmd_timer_remove(hdl, zcp->zc_remove_timer);
		zcp->zc_data.zc_has_remove_timer = 0;
		serialize = B_TRUE;
	}
	if (serialize)
		zfs_case_serialize(hdl, zcp);

	nvlist_free(detector);
}