Ejemplo n.º 1
0
static int
hotspares_imp_set(
	set_t	setno
)
{
	mddb_recid_t	recid;
	int		gotsomething;
	mddb_type_t	typ1;


	gotsomething = 0;

	typ1 = (mddb_type_t)md_getshared_key(setno,
	    hotspares_md_ops.md_driver.md_drivername);
	recid = mddb_makerecid(setno, 0);
	while ((recid = mddb_getnextrec(recid, typ1, 0)) > 0) {
		if (mddb_getrecprivate(recid) & MD_PRV_GOTIT)
			continue;

		switch (mddb_getrectype2(recid)) {
		case HSP_REC:
			imp_hotsparepool(setno, recid);
			gotsomething = 1;
			break;
		case HS_REC:
			imp_hotspare(setno, recid);
			gotsomething = 1;
			break;
		default:
			ASSERT(0);
		}
	}

	return (gotsomething);
}
Ejemplo n.º 2
0
static int
hotspares_snarf(md_snarfcmd_t cmd, set_t setno)
{
	mddb_recid_t	recid;
	int		gotsomething;
	mddb_type_t	typ1;

	if (cmd == MD_SNARF_CLEANUP)
		return (0);

	gotsomething = 0;

	typ1 = (mddb_type_t)md_getshared_key(setno,
	    hotspares_md_ops.md_driver.md_drivername);
	recid = mddb_makerecid(setno, 0);
	while ((recid = mddb_getnextrec(recid, typ1, 0)) > 0) {
		if (mddb_getrecprivate(recid) & MD_PRV_GOTIT)
			continue;

		switch (mddb_getrectype2(recid)) {
		case HSP_REC:
			load_hotsparepool(setno, recid);
			gotsomething = 1;
			break;
		case HS_REC:
			load_hotspare(setno, recid);
			gotsomething = 1;
			break;
		default:
			ASSERT(0);
		}
	}

	if (gotsomething)
		return (gotsomething);

	recid = mddb_makerecid(setno, 0);
	while ((recid = mddb_getnextrec(recid, typ1, 0)) > 0)
		if (!(mddb_getrecprivate(recid) & MD_PRV_GOTIT))
			mddb_setrecprivate(recid, MD_PRV_PENDDEL);

	return (0);
}
Ejemplo n.º 3
0
static int
stripe_grow(void *d, int mode, IOLOCK *lockp)
{
	minor_t		mnum;
	ms_unit_t	*un, *new_un;
	mdi_unit_t	*ui;
	minor_t		*par = NULL;
	IOLOCK		*plock = NULL;
	ms_comp_t	*mdcomp, *new_comp;
	int		row, i, c;
	mddb_recid_t	ms_recid;
	mddb_recid_t	old_vtoc = 0;
	mddb_recid_t	*recids;
	md_create_rec_option_t options;
	mddb_type_t	typ1;
	int		err;
	int64_t		tb, atb;
	uint_t		nr, oc;
	int		opened;
	int		rval = 0;
	set_t		setno;
	md_error_t	*mdep;
	int		npar;
	int		rid;
	int		num_recs;
	u_longlong_t	rev;
	md_grow_params_t	*mgp = d;


	mnum = mgp->mnum;
	mdep = &mgp->mde;
	setno = MD_MIN2SET(mnum);
	npar = mgp->npar;

	mdclrerror(mdep);

	if ((setno >= md_nsets) || (MD_MIN2UNIT(mnum) >= md_nunits))
		return (mdmderror(mdep, MDE_INVAL_UNIT, mnum));

	if (md_get_setstatus(setno) & MD_SET_STALE)
		return (mdmddberror(mdep, MDE_DB_STALE, mnum, setno));

	ui = MDI_UNIT(mnum);
	if (ui == NULL) {
		return (mdmderror(mdep, MDE_UNIT_NOT_SETUP, mnum));
	}

	if (npar >= 1) {
		ASSERT((minor_t *)(uintptr_t)mgp->par != NULL);
		par = kmem_alloc(npar * sizeof (*par), KM_SLEEP);
		plock = kmem_alloc(npar * sizeof (*plock), KM_SLEEP);
		if (ddi_copyin((caddr_t)(uintptr_t)mgp->par, (caddr_t)par,
		    (npar * sizeof (*par)), mode) != 0) {
			kmem_free(par, npar * sizeof (*par));
			kmem_free(plock, npar * sizeof (*plock));
			return (EFAULT);
		}
	}

	/*
	 * we grab unit reader/writer first, then parent locks,
	 * then our own.
	 * we expect parent units to be sorted to avoid deadlock
	 */
	rw_enter(&md_unit_array_rw.lock, RW_WRITER);
	for (i = 0; i < npar; ++i) {
		(void) md_ioctl_writerlock(&plock[i],
		    MDI_UNIT(par[i]));
	}
	un = (ms_unit_t *)md_ioctl_writerlock(lockp, ui);

	if (un->un_nrows != mgp->nrows) {
		rval = EINVAL;
		goto out;
	}

	typ1 = (mddb_type_t)md_getshared_key(setno,
	    stripe_md_ops.md_driver.md_drivername);

	/*
	 * Preserve the friendly name nature of growing device.
	 */
	options = MD_CRO_STRIPE;
	if (un->c.un_revision & MD_FN_META_DEV)
		options |= MD_CRO_FN;
	if (mgp->options & MD_CRO_64BIT) {
#if defined(_ILP32)
		rval = mdmderror(mdep, MDE_UNIT_TOO_LARGE, mnum);
		goto out;
#else
		ms_recid = mddb_createrec((size_t)mgp->size, typ1, 0,
		    MD_CRO_64BIT | options, setno);
#endif
	} else {
		ms_recid = mddb_createrec((size_t)mgp->size, typ1, 0,
		    MD_CRO_32BIT | options, setno);
	}


	if (ms_recid < 0) {
		rval = mddbstatus2error(mdep, (int)ms_recid, mnum, setno);
		goto out;
	}

	/* get the address of the new unit */
	new_un = (ms_unit_t *)mddb_getrecaddr(ms_recid);

	/*
	 * It is okay that we muck with the new unit here,
	 * since no one else will know about the unit struct
	 * until we commit it. If we crash, the record will
	 * be automatically purged, since we haven't
	 * committed it yet and the old unit struct will be found.
	 */

	/* copy in the user's unit struct */
	err = ddi_copyin((caddr_t)(uintptr_t)mgp->mdp, (caddr_t)new_un,
	    (size_t)mgp->size, mode);
	if (err) {
		mddb_deleterec_wrapper(ms_recid);
		rval = EFAULT;
		goto out;
	}
	if (options & MD_CRO_FN)
		new_un->c.un_revision |= MD_FN_META_DEV;

	/*
	 * allocate the real recids array.  since we may have to
	 * commit underlying metadevice records, we need an
	 * array of size: total number of new components being
	 * attached + 2 (one for the stripe itself, one for the
	 * end marker).
	 */
	num_recs = 2;
	rid = 0;
	for (row = 0; row < new_un->un_nrows; row++) {
		struct ms_row *mdr = &new_un->un_row[row];
		num_recs += mdr->un_ncomp;
	}
	recids = kmem_alloc(num_recs * sizeof (mddb_recid_t), KM_SLEEP);
	recids[rid++] = ms_recid;

	/*
	 * Save a few of the new unit structs fields.
	 * Before they get clobbered.
	 */
	tb = new_un->c.un_total_blocks;
	atb = new_un->c.un_actual_tb;
	nr = new_un->un_nrows;
	oc = new_un->un_ocomp;
	rev = new_un->c.un_revision;

	/*
	 * Copy the old unit struct (static stuff)
	 * into new unit struct
	 */
	bcopy((caddr_t)un, (caddr_t)new_un,
	    sizeof (ms_unit_t) + ((nr - 2) * (sizeof (struct ms_row))));

	/*
	 * Restore the saved stuff.
	 */
	new_un->c.un_total_blocks = tb;
	md_nblocks_set(mnum, new_un->c.un_total_blocks);
	new_un->c.un_actual_tb = atb;
	new_un->un_nrows = nr;
	new_un->un_ocomp = oc;
	new_un->c.un_revision = rev;

	new_un->c.un_record_id = ms_recid;
	new_un->c.un_size = mgp->size;

	/* All 64 bit metadevices only support EFI labels. */
	if (mgp->options & MD_CRO_64BIT) {
		new_un->c.un_flag |= MD_EFILABEL;
		/*
		 * If the device was previously smaller than a terabyte,
		 * and had a vtoc record attached to it, we remove the
		 * vtoc record, because the layout has changed completely.
		 */
		if (((un->c.un_revision & MD_64BIT_META_DEV) == 0) &&
		    (un->c.un_vtoc_id != 0)) {
			old_vtoc = un->c.un_vtoc_id;
			new_un->c.un_vtoc_id =
			    md_vtoc_to_efi_record(old_vtoc, setno);
		}
	}

	/*
	 * Copy the old component structs into the new unit struct.
	 */
	mdcomp = (ms_comp_t *)((void *)&((char *)un)[un->un_ocomp]);
	new_comp = (ms_comp_t *)((void *)&((char *)new_un)[new_un->un_ocomp]);
	for (row = 0; row < un->un_nrows; row++) {
		struct ms_row *mdr = &un->un_row[row];
		for (i = 0, c = mdr->un_icomp; i < mdr->un_ncomp; i++, c++) {
			bcopy((caddr_t)&mdcomp[c], (caddr_t)&new_comp[c],
			    sizeof (ms_comp_t));
		}
	}

	opened = md_unit_isopen(ui);

	/*
	 * Set parent on metadevices being added.
	 * Open the new devices being added.
	 * NOTE: currently soft partitions are the only metadevices
	 * which can appear within a stripe.
	 */
	for (row = un->un_nrows; row < new_un->un_nrows; row++) {
		struct ms_row *mdr = &new_un->un_row[row];
		for (i = 0, c = mdr->un_icomp; i < mdr->un_ncomp; i++) {
			struct ms_comp	*mdc = &new_comp[c++];
			md_dev64_t comp_dev;
			md_unit_t *comp_un;

			comp_dev = mdc->un_dev;
			/* set parent on any metadevices */
			if (md_getmajor(comp_dev) == md_major) {
				comp_un = MD_UNIT(md_getminor(comp_dev));
				recids[rid++] = MD_RECID(comp_un);
				md_set_parent(comp_dev, MD_SID(new_un));
			}

			if (opened) {
				md_dev64_t tmpdev = mdc->un_dev;
				/*
				 * Open by device id
				 * Check if this comp is hotspared and
				 * if it is then use the key for hotspare
				 */
				tmpdev = md_resolve_bydevid(mnum, tmpdev,
				    mdc->un_mirror.ms_hs_id ?
				    mdc->un_mirror.ms_hs_key : mdc->un_key);
				(void) md_layered_open(mnum, &tmpdev,
				    MD_OFLG_NULL);
				mdc->un_dev = tmpdev;
				mdc->un_mirror.ms_flags |= MDM_S_ISOPEN;
			}
		}
	}

	/* set end marker */
	recids[rid] = 0;
	/* commit new unit struct */
	mddb_commitrecs_wrapper(recids);

	/* delete old unit struct */
	mddb_deleterec_wrapper(un->c.un_record_id);

	/* place new unit in in-core array */
	md_nblocks_set(mnum, new_un->c.un_total_blocks);
	MD_UNIT(mnum) = new_un;

	/*
	 * If old_vtoc has a non zero value, we know:
	 * - This unit crossed the border from smaller to larger one TB
	 * - There was a vtoc record for the unit,
	 * - This vtoc record is no longer needed, because
	 *   a new efi record has been created for this un.
	 */
	if (old_vtoc != 0) {
		mddb_deleterec_wrapper(old_vtoc);
	}

	/* free recids array */
	kmem_free(recids, num_recs * sizeof (mddb_recid_t));

	SE_NOTIFY(EC_SVM_CONFIG, ESC_SVM_GROW, SVM_TAG_METADEVICE,
	    MD_UN2SET(new_un), MD_SID(new_un));

	/* release locks, return success */
out:
	for (i =  npar - 1; (i >= 0); --i)
		md_ioctl_writerexit(&plock[i]);
	rw_exit(&md_unit_array_rw.lock);
	if (plock != NULL)
		kmem_free(plock, npar * sizeof (*plock));
	if (par != NULL)
		kmem_free(par, npar * sizeof (*par));
	return (rval);
}
Ejemplo n.º 4
0
static int
stripe_set(void *d, int mode)
{
	minor_t		mnum;
	ms_unit_t	*un;
	void		*p;
	mddb_recid_t	ms_recid;
	mddb_recid_t	*recids;
	mddb_type_t	typ1;
	int		err;
	set_t		setno;
	md_error_t	*mdep;
	struct ms_comp	*mdcomp;
	int		row;
	int		rid;
	int		num_recs;
	int		i, c;
	md_set_params_t	*msp = d;

	mnum = msp->mnum;
	setno = MD_MIN2SET(mnum);

	mdep = &msp->mde;

	mdclrerror(mdep);

	if ((setno >= md_nsets) || (MD_MIN2UNIT(mnum) >= md_nunits)) {
		return (mdmderror(mdep, MDE_INVAL_UNIT, mnum));
	}

	if (md_get_setstatus(setno) & MD_SET_STALE)
		return (mdmddberror(mdep, MDE_DB_STALE, mnum, setno));

	un = MD_UNIT(mnum);
	if (un != NULL) {
		return (mdmderror(mdep, MDE_UNIT_ALREADY_SETUP, mnum));
	}


	typ1 = (mddb_type_t)md_getshared_key(setno,
	    stripe_md_ops.md_driver.md_drivername);

	/* create the db record for this mdstruct */
	if (msp->options & MD_CRO_64BIT) {
#if defined(_ILP32)
		return (mdmderror(mdep, MDE_UNIT_TOO_LARGE, mnum));
#else
		ms_recid = mddb_createrec((size_t)msp->size, typ1, 0,
		    MD_CRO_64BIT | MD_CRO_STRIPE | MD_CRO_FN, setno);
#endif
	} else {
		ms_recid = mddb_createrec((size_t)msp->size, typ1, 0,
		    MD_CRO_32BIT | MD_CRO_STRIPE | MD_CRO_FN, setno);
	}
	if (ms_recid < 0)
		return (mddbstatus2error(mdep, ms_recid, mnum, setno));

	/* get the address of the mdstruct */
	p = (void *) mddb_getrecaddr(ms_recid);
	/*
	 * It is okay that we muck with the mdstruct here,
	 * since no one else will know about the mdstruct
	 * until we commit it. If we crash, the record will
	 * be automatically purged, since we haven't
	 * committed it yet.
	 */

	/* copy in the user's mdstruct */
	if (err = ddi_copyin((caddr_t)(uintptr_t)msp->mdp, (caddr_t)p,
	    (size_t)msp->size, mode)) {
		mddb_deleterec_wrapper(ms_recid);
		return (EFAULT);
	}

	un = (ms_unit_t *)p;

	/* All 64 bit metadevices only support EFI labels. */
	if (msp->options & MD_CRO_64BIT) {
		un->c.un_flag |= MD_EFILABEL;
	}

	/*
	 * allocate the real recids array.  since we may have to commit
	 * underlying metadevice records, we need an array
	 * of size: total number of components in stripe + 3
	 * (1 for the stripe itself, one for the hotspare, one
	 * for the end marker).
	 */
	num_recs = 3;
	rid = 0;
	for (row = 0; row < un->un_nrows; row++) {
		struct ms_row *mdr = &un->un_row[row];
		num_recs += mdr->un_ncomp;
	}
	recids = kmem_alloc(num_recs * sizeof (mddb_recid_t), KM_SLEEP);
	recids[rid++] = ms_recid;

	MD_SID(un) = mnum;
	MD_RECID(un) = recids[0];
	MD_CAPAB(un) = MD_CAN_PARENT | MD_CAN_SUB_MIRROR | MD_CAN_SP;
	MD_PARENT(un) = MD_NO_PARENT;
	un->c.un_revision |= MD_FN_META_DEV;

	if (err = stripe_build_incore(p, 0)) {
		md_nblocks_set(mnum, -1ULL);
		MD_UNIT(mnum) = NULL;

		mddb_deleterec_wrapper(recids[0]);
		kmem_free(recids, num_recs * sizeof (mddb_recid_t));
		return (err);
	}

	/*
	 * Update unit availability
	 */
	md_set[setno].s_un_avail--;

	recids[rid] = 0;
	if (un->un_hsp_id != -1)
		err = md_hot_spare_ifc(HSP_INCREF, un->un_hsp_id, 0, 0,
		    &recids[rid++], NULL, NULL, NULL);


	if (err) {
		md_nblocks_set(mnum, -1ULL);
		MD_UNIT(mnum) = NULL;

		mddb_deleterec_wrapper(recids[0]);
		kmem_free(recids, num_recs * sizeof (mddb_recid_t));
		return (mdhsperror(mdep, MDE_INVAL_HSP, un->un_hsp_id));
	}

	/*
	 * set the parent on any metadevice components.
	 * NOTE: currently soft partitions are the only metadevices
	 * which can appear within a stripe.
	 */
	mdcomp = (ms_comp_t *)((void *)&((char *)un)[un->un_ocomp]);
	for (row = 0; row < un->un_nrows; row++) {
		struct ms_row *mdr = &un->un_row[row];
		for (i = 0, c = mdr->un_icomp; i < mdr->un_ncomp; i++) {
			ms_comp_t *mdc = &mdcomp[c++];
			md_dev64_t comp_dev;
			md_unit_t *comp_un;

			comp_dev = mdc->un_dev;
			if (md_getmajor(comp_dev) == md_major) {
				/* set parent and disallow soft partitioning */
				comp_un = MD_UNIT(md_getminor(comp_dev));
				recids[rid++] = MD_RECID(comp_un);
				md_set_parent(mdc->un_dev, MD_SID(un));
			}
		}
	}

	/* set end marker */
	recids[rid] = 0;
	mddb_commitrecs_wrapper(recids);

	md_create_unit_incore(mnum, &stripe_md_ops, 0);
	kmem_free(recids, (num_recs * sizeof (mddb_recid_t)));
	SE_NOTIFY(EC_SVM_CONFIG, ESC_SVM_CREATE, SVM_TAG_METADEVICE,
	    MD_UN2SET(un), MD_SID(un));
	return (0);
}
Ejemplo n.º 5
0
static int
seths_create_hsp(set_hs_params_t *shs)
{
	hot_spare_pool_t	*hsp;
	mddb_recid_t		recid;
	set_t			setno;
	mddb_type_t		typ1;

	setno = HSP_SET(shs->shs_hot_spare_pool);

	/* Scan the hot spare pool list */
	hsp = find_hot_spare_pool(setno, shs->shs_hot_spare_pool);
	if (hsp != (hot_spare_pool_t *)0)
		return (0);

	typ1 = (mddb_type_t)md_getshared_key(setno,
	    hotspares_md_ops.md_driver.md_drivername);

	/* create a hot spare pool record */
	if (shs->shs_options & MD_CRO_64BIT) {
#if defined(_ILP32)
		return (mdhsperror(&shs->mde, MDE_HSP_UNIT_TOO_LARGE,
		    shs->shs_hot_spare_pool));
#else
		recid = mddb_createrec(sizeof (hot_spare_pool_ond_t), typ1,
		    HSP_REC, MD_CRO_64BIT | MD_CRO_HOTSPARE_POOL | MD_CRO_FN,
		    setno);
#endif
	} else {
		recid = mddb_createrec(sizeof (hot_spare_pool_ond_t), typ1,
		    HSP_REC, MD_CRO_32BIT | MD_CRO_HOTSPARE_POOL | MD_CRO_FN,
		    setno);
	}

	if (recid < 0) {
		return (mdhsperror(&shs->mde, MDE_HSP_CREATE_FAILURE,
		    shs->shs_hot_spare_pool));
	}

	/* get the record addr */
	hsp = (hot_spare_pool_t *)mddb_getrecaddr_resize(recid, sizeof (*hsp),
		HSP_ONDSK_STR_OFF);

	hsp->hsp_self_id = shs->shs_hot_spare_pool;
	hsp->hsp_record_id = recid;
	hsp->hsp_next = (hot_spare_pool_t *)md_set[setno].s_hsp;
	hsp->hsp_refcount = 0;
	hsp->hsp_nhotspares = 0;
	hsp->hsp_revision |= MD_FN_META_DEV;

	md_set[setno].s_hsp = (void *) hsp;

	mddb_commitrec_wrapper(recid);
	SE_NOTIFY(EC_SVM_CONFIG, ESC_SVM_CREATE, SVM_TAG_HSP, setno,
	    md_expldev(hsp->hsp_self_id));

	rw_enter(&hotspares_md_ops.md_link_rw.lock, RW_WRITER);
	hsp->hsp_link.ln_next = hotspares_md_ops.md_head;
	hsp->hsp_link.ln_setno = setno;
	hsp->hsp_link.ln_id = hsp->hsp_self_id;
	hotspares_md_ops.md_head = &hsp->hsp_link;
	rw_exit(&hotspares_md_ops.md_link_rw.lock);

	return (0);
}
Ejemplo n.º 6
0
static int
seths_replace(set_hs_params_t *shs)
{
	hot_spare_t		*hs;
	hot_spare_t		*prev_hs;
	hot_spare_t		*new_hs;
	hot_spare_pool_t	*hsp;
	int			new_found = 0;
	mddb_recid_t		recid;
	mddb_recid_t		recids[5];
	int			i;
	sv_dev_t		sv;
	int			delete_hs = 0;
	set_t			setno;
	mddb_type_t		typ1;
	mdkey_t			key_old;
	int			num_keys_old = 0;

	setno = HSP_SET(shs->shs_hot_spare_pool);
	typ1 = (mddb_type_t)md_getshared_key(setno,
	    hotspares_md_ops.md_driver.md_drivername);

	/* Scan the hot spare list */
	hs = (hot_spare_t *)md_set[setno].s_hs;
	prev_hs = (hot_spare_t *)0;
	while (hs) {
		if (hs->hs_devnum == shs->shs_component_old) {
			break;
		}
		prev_hs = hs;
		hs = hs->hs_next;
	}

	if (hs == NULL) {
		/*
		 * Unable to find device using devnum so use
		 * key associated with shs_component_old instead.
		 * If unable to find a unique key for shs_component_old
		 * then fail since namespace has multiple entries
		 * for this old component and we're unable to determine
		 * which key is the valid match for shs_component_old.
		 *
		 * Only need to compare keys when hs_devnum is NODEV.
		 */
		if (md_getkeyfromdev(setno, mddb_getsidenum(setno),
		    shs->shs_component_old, &key_old, &num_keys_old) != 0) {
			return (mddeverror(&shs->mde, MDE_NAME_SPACE,
			    shs->shs_component_old));
		}

		/*
		 * If more than one key matches given old_dev - fail command
		 * since unable to determine which key is correct.
		 */
		if (num_keys_old > 1) {
			return (mddeverror(&shs->mde, MDE_MULTNM,
			    shs->shs_component_old));
		}
		/*
		 * If there is no key for this entry then fail since
		 * a key for this entry should exist.
		 */
		if (num_keys_old == 0) {
			return (mddeverror(&shs->mde, MDE_INVAL_HS,
			    shs->shs_component_old));
		}
		/* Scan the hot spare list again */
		hs = (hot_spare_t *)md_set[setno].s_hs;
		prev_hs = (hot_spare_t *)0;
		while (hs) {
			/*
			 * Only need to compare keys when hs_devnum is NODEV.
			 */
			if ((hs->hs_devnum == NODEV64) &&
			    (hs->hs_key == key_old)) {
				break;
			}
			prev_hs = hs;
			hs = hs->hs_next;
		}
	}

	if (hs == NULL) {
		return (mddeverror(&shs->mde, MDE_INVAL_HS,
		    shs->shs_component_old));
	}

	/* check the force flag and the state of the hot spare */
	if (((shs->shs_options & HS_OPT_FORCE) == 0) &&
	    (hs->hs_state == HSS_RESERVED)) {
		return (mdhserror(&shs->mde, MDE_HS_RESVD,
		    shs->shs_hot_spare_pool,
		    hs->hs_devnum));
	}

	/* Scan the hot spare pool list */
	hsp = find_hot_spare_pool(setno, shs->shs_hot_spare_pool);
	if (hsp == (hot_spare_pool_t *)0) {
		return (mdhsperror(&shs->mde, MDE_INVAL_HSP,
		    shs->shs_hot_spare_pool));
	}

	/*
	 * Make sure the old device is in the pool.
	 */
	for (i = 0; i < hsp->hsp_nhotspares; i++) {
		if (hsp->hsp_hotspares[i] == hs->hs_record_id) {
			break;
		}
	}
	if (i >= hsp->hsp_nhotspares) {
		return (mddeverror(&shs->mde, MDE_INVAL_HS,
		    hs->hs_devnum));
	}

	/* Scan the hot spare list for the new hs */
	new_hs = (hot_spare_t *)md_set[setno].s_hs;
	new_found = 0;
	while (new_hs) {
		if (new_hs->hs_devnum == shs->shs_component_new) {
			new_found = 1;
			break;
		}
		new_hs = new_hs->hs_next;
	}

	/*
	 * Make sure the new device is not already in the pool.
	 * We don't have to search the hs in this hsp, if the
	 * new hs was just created. Only if the hot spare was found.
	 */
	if (new_found) {
		for (i = 0; i < hsp->hsp_nhotspares; i++)
			if (hsp->hsp_hotspares[i] == new_hs->hs_record_id) {
				return (mdhserror(&shs->mde, MDE_HS_INUSE,
				    shs->shs_hot_spare_pool,
				    new_hs->hs_devnum));
			}
	}

	/* In case of a dryrun, we're done here */
	if (shs->shs_options & HS_OPT_DRYRUN) {
		return (0);
	}

	/*
	 * Create the new hotspare
	 */
	if (!new_found) {
		/* create a hot spare record */
		if (shs->shs_size_option & MD_CRO_64BIT) {
#if defined(_ILP32)
			return (mdhserror(&shs->mde, MDE_HS_UNIT_TOO_LARGE,
			    shs->shs_hot_spare_pool, shs->shs_component_new));
#else
			recid = mddb_createrec(HS_ONDSK_STR_SIZE, typ1, HS_REC,
				MD_CRO_64BIT | MD_CRO_HOTSPARE, setno);
#endif
		} else {
			recid = mddb_createrec(HS_ONDSK_STR_SIZE, typ1, HS_REC,
				MD_CRO_32BIT | MD_CRO_HOTSPARE, setno);
		}

		if (recid < 0) {
			return (mdhserror(&shs->mde, MDE_HS_CREATE_FAILURE,
			    shs->shs_hot_spare_pool,
			    shs->shs_component_new));
		}

		/* get the addr */
		new_hs = (hot_spare_t *)mddb_getrecaddr_resize(recid,
			sizeof (*new_hs), 0);

		new_hs->hs_record_id = recid;
		new_hs->hs_devnum = shs->shs_component_new;
		new_hs->hs_key = shs->shs_key_new;
		new_hs->hs_start_blk = shs->shs_start_blk;
		new_hs->hs_has_label = shs->shs_has_label;
		new_hs->hs_number_blks = shs->shs_number_blks;
		set_hot_spare_state(new_hs, HSS_AVAILABLE);
		new_hs->hs_refcount = 0;
		new_hs->hs_isopen = 1;
	}

	/* lock the db records */
	recids[0] = hs->hs_record_id;
	recids[1] = new_hs->hs_record_id;
	recids[2] = hsp->hsp_record_id;
	recids[3] = 0;

	sv.setno = setno;
	sv.key = hs->hs_key;

	hs->hs_refcount--;
	if (hs->hs_refcount == 0) {
		/*
		 * NOTE: We do not commit the previous hot spare record.
		 *	 There is no need, the link we get rebuilt at boot time.
		 */
		if (prev_hs) {
			prev_hs->hs_next = hs->hs_next;
		} else
			md_set[setno].s_hs = (void *) hs->hs_next;

		/* mark hs to be deleted in the correct order */
		delete_hs = 1;

		recids[0] = new_hs->hs_record_id;
		recids[1] = hsp->hsp_record_id;
		recids[2] = 0;
	}

	/* link into the hs list */
	new_hs->hs_refcount++;
	if (!new_found) {
		/* do this AFTER the old dev is possibly removed */
		new_hs->hs_next = (hot_spare_t *)md_set[setno].s_hs;
		md_set[setno].s_hs = (void *) new_hs;
	}

	/* find the location of the old hs in the hsp */
	for (i = 0; i < hsp->hsp_nhotspares; i++) {
		if (hsp->hsp_hotspares[i] == hs->hs_record_id) {
			hsp->hsp_hotspares[i] = new_hs->hs_record_id;
			break;
		}
	}

	if (shs->shs_size_option & MD_CRO_64BIT) {
		new_hs->hs_revision |= MD_64BIT_META_DEV;
	} else {
		new_hs->hs_revision &= ~MD_64BIT_META_DEV;
	}

	/* commit the db records */
	mddb_commitrecs_wrapper(recids);

	if (delete_hs)
		mddb_deleterec_wrapper(hs->hs_record_id);

	md_rem_names(&sv, 1);

	SE_NOTIFY(EC_SVM_CONFIG, ESC_SVM_REPLACE, SVM_TAG_HSP, setno,
	    md_expldev(hsp->hsp_self_id));
	return (0);
}
Ejemplo n.º 7
0
static int
seths_add(set_hs_params_t *shs)
{
	hot_spare_t		*hs;
	hot_spare_pool_t	*hsp;
	hot_spare_pool_t	*prev_hsp;
	hot_spare_pool_t	*new_hsp;
	hot_spare_pool_t	*old_hsp;
	md_create_rec_option_t	options;
	mddb_recid_t		recid;
	mddb_recid_t		recids[5];
	size_t			new_size;
	int			i;
	int			delete_hsp = 0;
	int			irecid;
	set_t			setno;
	mddb_type_t		typ1;
	int			hsp_created = 0;
	mdkey_t			key_old;
	int			num_keys_old = 0;

	/* Not much to do here in case of a dryrun */
	if (shs->shs_options & HS_OPT_DRYRUN) {
		return (0);
	}

	/* create an empty hot spare pool */
	if (shs->shs_options & HS_OPT_POOL) {
		return (seths_create_hsp(shs));
	}

	setno = HSP_SET(shs->shs_hot_spare_pool);
	typ1 = (mddb_type_t)md_getshared_key(setno,
	    hotspares_md_ops.md_driver.md_drivername);

	/* Scan the hot spare list */
	hs = (hot_spare_t *)md_set[setno].s_hs;
	while (hs) {
		if (hs->hs_devnum == shs->shs_component_old) {
			break;
		}
		hs = hs->hs_next;
	}

	if (hs == NULL) {
		/*
		 * Did not find match for device using devnum so use
		 * key associated with shs_component_old just
		 * in case there is a match but the match's dev is NODEV.
		 * If unable to find a unique key for shs_component_old
		 * then fail since namespace has multiple entries
		 * for this old component and we shouldn't allow
		 * an addition of a hotspare in this case.
		 */
		if (md_getkeyfromdev(setno, mddb_getsidenum(setno),
		    shs->shs_component_old, &key_old, &num_keys_old) != 0) {
			return (mddeverror(&shs->mde, MDE_NAME_SPACE,
			    shs->shs_component_old));
		}

		/*
		 * If more than one key matches given old_dev - fail command
		 * since shouldn't add new hotspare if namespace has
		 * multiple entries.
		 */
		if (num_keys_old > 1) {
			return (mddeverror(&shs->mde, MDE_MULTNM,
			    shs->shs_component_old));
		}
		/*
		 * If there is no key for this entry then fail since
		 * a key for this entry should exist.
		 */
		if (num_keys_old == 0) {
			return (mddeverror(&shs->mde, MDE_INVAL_HS,
			    shs->shs_component_old));
		}
		/* Scan the hot spare list again */
		hs = (hot_spare_t *)md_set[setno].s_hs;
		while (hs) {
			/*
			 * Only need to compare keys when hs_devnum is NODEV.
			 */
			if ((hs->hs_devnum == NODEV64) &&
			    (hs->hs_key == key_old)) {
				break;
			}
			hs = hs->hs_next;
		}
	}

	if (hs == NULL) {
		/* create a hot spare record */
		if (shs->shs_size_option & MD_CRO_64BIT) {
#if defined(_ILP32)
			return (mdhserror(&shs->mde, MDE_HS_UNIT_TOO_LARGE,
			    shs->shs_hot_spare_pool, shs->shs_component_old));
#else
			recid = mddb_createrec(HS_ONDSK_STR_SIZE, typ1, HS_REC,
				MD_CRO_64BIT | MD_CRO_HOTSPARE, setno);
#endif
		} else {
			recid = mddb_createrec(HS_ONDSK_STR_SIZE, typ1, HS_REC,
				MD_CRO_32BIT | MD_CRO_HOTSPARE, setno);
		}

		if (recid < 0) {
			return (mdhserror(&shs->mde, MDE_HS_CREATE_FAILURE,
			    shs->shs_hot_spare_pool,
			    shs->shs_component_old));
		}

		/* get the addr */
		hs = (hot_spare_t *)mddb_getrecaddr_resize(recid, sizeof (*hs),
			0);

		hs->hs_record_id = recid;

		hs->hs_devnum = shs->shs_component_old;
		hs->hs_key = shs->shs_key_old;
		hs->hs_start_blk = shs->shs_start_blk;
		hs->hs_has_label = shs->shs_has_label;
		hs->hs_number_blks = shs->shs_number_blks;
		set_hot_spare_state(hs, HSS_AVAILABLE);
		hs->hs_refcount = 0;
		hs->hs_next = (hot_spare_t *)md_set[setno].s_hs;
		md_set[setno].s_hs = (void *) hs;
	}

	/* Scan the hot spare pool list */
	hsp = (hot_spare_pool_t *)md_set[setno].s_hsp;
	prev_hsp = (hot_spare_pool_t *)0;
	while (hsp) {
		if (hsp->hsp_self_id == shs->shs_hot_spare_pool) {
			break;
		}
		prev_hsp = hsp;
		hsp = hsp->hsp_next;
	}

	if (hsp == NULL) {
		/* create a hot spare pool record */
		recid = mddb_createrec(sizeof (hot_spare_pool_ond_t),
		    typ1, HSP_REC,
		    MD_CRO_32BIT | MD_CRO_HOTSPARE_POOL | MD_CRO_FN, setno);

		if (recid < 0) {
			return (mdhsperror(&shs->mde, MDE_HSP_CREATE_FAILURE,
			    shs->shs_hot_spare_pool));
		}

		/* get the record addr */
		hsp = (hot_spare_pool_t *)mddb_getrecaddr_resize(recid,
			sizeof (*hsp), HSP_ONDSK_STR_OFF);

		hsp->hsp_self_id = shs->shs_hot_spare_pool;
		hsp->hsp_record_id = recid;
		hsp->hsp_next = (hot_spare_pool_t *)md_set[setno].s_hsp;
		hsp->hsp_refcount = 0;
		hsp->hsp_nhotspares = 0;
		hsp->hsp_revision |= MD_FN_META_DEV;

		/* force prev_hsp to NULL, this will cause hsp to be linked */
		prev_hsp = (hot_spare_pool_t *)0;

		rw_enter(&hotspares_md_ops.md_link_rw.lock, RW_WRITER);
		hsp->hsp_link.ln_next = hotspares_md_ops.md_head;
		hsp->hsp_link.ln_setno = setno;
		hsp->hsp_link.ln_id = hsp->hsp_self_id;
		hotspares_md_ops.md_head = &hsp->hsp_link;
		rw_exit(&hotspares_md_ops.md_link_rw.lock);
		hsp_created = 1;
	} else {

		/*
		 * Make sure the hot spare is not already in the pool.
		 */
		for (i = 0; i < hsp->hsp_nhotspares; i++)
			if (hsp->hsp_hotspares[i] == hs->hs_record_id) {
				return (mdhserror(&shs->mde, MDE_HS_INUSE,
					shs->shs_hot_spare_pool,
					hs->hs_devnum));
			}
		/*
		 * Create a new hot spare pool record
		 * This gives us the one extra hs slot,
		 * because there is one slot in the
		 * hot_spare_pool struct
		 */
		new_size = sizeof (hot_spare_pool_ond_t) +
			(sizeof (mddb_recid_t) * hsp->hsp_nhotspares);

		/*
		 * The Friendly Name status of the new HSP should duplicate
		 * the status of the existing one.
		 */
		if (hsp->hsp_revision & MD_FN_META_DEV) {
			options =
				MD_CRO_32BIT | MD_CRO_HOTSPARE_POOL | MD_CRO_FN;
		} else {
			options = MD_CRO_32BIT | MD_CRO_HOTSPARE_POOL;
		}
		recid = mddb_createrec(new_size, typ1, HSP_REC, options, setno);

		if (recid < 0) {
			return (mdhsperror(&shs->mde, MDE_HSP_CREATE_FAILURE,
			    hsp->hsp_self_id));
		}
		new_size = sizeof (hot_spare_pool_t) +
			(sizeof (mddb_recid_t) * hsp->hsp_nhotspares);

		/* get the record addr */
		new_hsp = (hot_spare_pool_t *)mddb_getrecaddr_resize(recid,
			new_size, HSP_ONDSK_STR_OFF);

		/* copy the old record into the new one */
		bcopy((caddr_t)hsp, (caddr_t)new_hsp,
		    (size_t)((sizeof (hot_spare_pool_t) +
		    (sizeof (mddb_recid_t) * hsp->hsp_nhotspares)
		    - sizeof (mddb_recid_t))));
		new_hsp->hsp_record_id = recid;

		md_rem_link(setno, hsp->hsp_self_id,
		    &hotspares_md_ops.md_link_rw.lock,
		    &hotspares_md_ops.md_head);

		rw_enter(&hotspares_md_ops.md_link_rw.lock, RW_WRITER);
		new_hsp->hsp_link.ln_next = hotspares_md_ops.md_head;
		new_hsp->hsp_link.ln_setno = setno;
		new_hsp->hsp_link.ln_id = new_hsp->hsp_self_id;
		hotspares_md_ops.md_head = &new_hsp->hsp_link;
		rw_exit(&hotspares_md_ops.md_link_rw.lock);

		/* mark the old hsp to be deleted */
		delete_hsp = 1;
		old_hsp = hsp;
		hsp = new_hsp;
	}

	if (shs->shs_size_option & MD_CRO_64BIT) {
		hs->hs_revision |= MD_64BIT_META_DEV;
	} else {
		hs->hs_revision &= ~MD_64BIT_META_DEV;
	}

	/* lock the db records */
	recids[0] = hs->hs_record_id;
	recids[1] = hsp->hsp_record_id;
	irecid = 2;
	if (delete_hsp)
		recids[irecid++] = old_hsp->hsp_record_id;
	recids[irecid] = 0;

	/* increment the reference count */
	hs->hs_refcount++;

	/* add the hs at the end of the hot spare pool */
	hsp->hsp_hotspares[hsp->hsp_nhotspares] = hs->hs_record_id;
	hsp->hsp_nhotspares++;

	/*
	 * NOTE: We do not commit the previous hot spare pool record.
	 *	 There is no need, the link gets rebuilt at boot time.
	 */
	if (prev_hsp)
		prev_hsp->hsp_next = hsp;
	else
		md_set[setno].s_hsp = (void *) hsp;

	if (delete_hsp)
		old_hsp->hsp_self_id = MD_HSP_NONE;

	/* commit the db records */
	mddb_commitrecs_wrapper(recids);

	if (delete_hsp) {
		/* delete the old hot spare pool record */
		mddb_deleterec_wrapper(old_hsp->hsp_record_id);
	}

	if (hsp_created) {
		SE_NOTIFY(EC_SVM_CONFIG, ESC_SVM_CREATE, SVM_TAG_HSP, setno,
		    md_expldev(hsp->hsp_self_id));
	}
	SE_NOTIFY(EC_SVM_CONFIG, ESC_SVM_ADD, SVM_TAG_HSP, setno,
	    md_expldev(hsp->hsp_self_id));

	return (0);
}