/*
* resync raid
*/
int
meta_raid_resync(
mdsetname_t *sp,
mdname_t *raidnp,
daddr_t size,
md_error_t *ep
)
{
char *miscname;
md_resync_ioctl_t ri;
/* should have a set */
assert(sp != NULL);
assert(sp->setno == MD_MIN2SET(meta_getminor(raidnp->dev)));
/* make sure we have a raid */
if ((miscname = metagetmiscname(raidnp, ep)) == NULL)
return (-1);
if (strcmp(miscname, MD_RAID) != 0) {
return (mdmderror(ep, MDE_NOT_RAID, meta_getminor(raidnp->dev),
raidnp->cname));
}
/* start resync */
(void) memset(&ri, 0, sizeof (ri));
MD_SETDRIVERNAME(&ri, MD_RAID, sp->setno);
ri.ri_mnum = meta_getminor(raidnp->dev);
ri.ri_copysize = size;
if (metaioctl(MD_IOCSETSYNC, &ri, &ri.mde, raidnp->cname) != 0)
return (mdstealerror(ep, &ri.mde));
/* return success */
return (0);
}
static int
stripe_reset(md_i_reset_t *mirp)
{
minor_t mnum = mirp->mnum;
ms_unit_t *un;
mdi_unit_t *ui;
set_t setno = MD_MIN2SET(mnum);
mdclrerror(&mirp->mde);
if ((setno >= md_nsets) || (MD_MIN2UNIT(mnum) >= md_nunits))
return (mdmderror(&mirp->mde, MDE_INVAL_UNIT, mnum));
if (md_get_setstatus(setno) & MD_SET_STALE)
return (mdmddberror(&mirp->mde, MDE_DB_STALE, mnum, setno));
un = MD_UNIT(mnum);
if (un == NULL) {
return (mdmderror(&mirp->mde, MDE_UNIT_NOT_SETUP, mnum));
}
/* This prevents new opens */
rw_enter(&md_unit_array_rw.lock, RW_WRITER);
if (MD_HAS_PARENT(un->c.un_parent)) {
rw_exit(&md_unit_array_rw.lock);
return (mdmderror(&mirp->mde, MDE_IN_USE, mnum));
}
/* single thread */
ui = MDI_UNIT(mnum);
un = md_unit_openclose_enter(ui);
if (md_unit_isopen(ui)) {
md_unit_openclose_exit(ui);
rw_exit(&md_unit_array_rw.lock);
return (mdmderror(&mirp->mde, MDE_IS_OPEN, mnum));
}
md_unit_openclose_exit(ui);
reset_stripe(un, mnum, 1);
/*
* Update unit availability
*/
md_set[setno].s_un_avail++;
/*
* If MN set, reset s_un_next so all nodes can have
* the same view of the next available slot when
* nodes are -w and -j
*/
if (MD_MNSET_SETNO(setno)) {
(void) md_upd_set_unnext(setno, MD_MIN2UNIT(mnum));
}
rw_exit(&md_unit_array_rw.lock);
return (0);
}
/*
* grow the parent of a device
*/
int
meta_concat_parent(
mdsetname_t *sp,
mdname_t *childnp,
md_error_t *ep
)
{
md_common_t *mdp;
mdname_t *parentnp;
md_unit_t *mup;
/* should have a set */
assert(sp != NULL);
assert(sp->setno == MD_MIN2SET(meta_getminor(childnp->dev)));
/* get parent */
if ((mdp = meta_get_unit(sp, childnp, ep)) == NULL)
return (-1);
if (! MD_HAS_PARENT(mdp->parent))
return (0);
if (mdp->parent == MD_MULTI_PARENT)
return (0);
/* single parent */
if ((parentnp = metamnumname(&sp, mdp->parent, 0, ep)) == NULL)
return (-1);
/* don't grow non-metadevices or soft partitions */
if (! metaismeta(parentnp) || meta_sp_issp(sp, parentnp, ep) == 0)
return (0);
if ((mup = meta_get_mdunit(sp, childnp, ep)) == NULL)
return (-1);
/* grow parent */
if (meta_concat_generic(sp, parentnp, mup->c.un_revision, ep) != 0)
return (-1);
/* recursively check for parents of parents */
return (meta_concat_parent(sp, parentnp, ep));
}
/*
* NAME: raid_resync_unit
*
* DESCRIPTION: RAID metadevice specific resync routine.
* Open the unit and start resync_unit as a separate thread.
*
* PARAMETERS: minor_t mnum - minor number identity of metadevice
* md_error_t *ep - output error parameter
*
* RETURN: On error return 1 or set ep to nonzero, otherwise return 0.
*
* LOCKS: Acquires and releases Unit Writer Lock.
*/
int
raid_resync_unit(
minor_t mnum,
md_error_t *ep
)
{
mdi_unit_t *ui;
set_t setno = MD_MIN2SET(mnum);
mr_unit_t *un;
ui = MDI_UNIT(mnum);
un = MD_UNIT(mnum);
if (md_get_setstatus(setno) & MD_SET_STALE)
return (mdmddberror(ep, MDE_DB_STALE, mnum, setno));
ASSERT(un->un_column[un->un_resync_index].un_devflags &
(MD_RAID_COPY_RESYNC | MD_RAID_REGEN_RESYNC));
/* Don't start a resync if the device is not available */
if ((ui == NULL) || (ui->ui_tstate & MD_DEV_ERRORED)) {
return (mdmderror(ep, MDE_RAID_OPEN_FAILURE, mnum));
}
if (raid_internal_open(mnum, FREAD | FWRITE, OTYP_LYR, 0)) {
(void) md_unit_writerlock(ui);
release_resync_request(mnum);
md_unit_writerexit(ui);
SE_NOTIFY(EC_SVM_STATE, ESC_SVM_OPEN_FAIL, SVM_TAG_METADEVICE,
setno, MD_SID(un));
return (mdmderror(ep, MDE_RAID_OPEN_FAILURE, mnum));
}
/* start resync_unit thread */
(void) thread_create(NULL, 0, resync_unit, (void *)(uintptr_t)mnum,
0, &p0, TS_RUN, minclsyspri);
return (0);
}
static int
raid_open_alt(mr_unit_t *un, int index)
{
mr_column_t *column = &un->un_column[index];
set_t setno = MD_MIN2SET(MD_SID(un));
side_t side = mddb_getsidenum(setno);
md_dev64_t tmpdev = column->un_alt_dev;
/* correct locks */
ASSERT(UNIT_WRITER_HELD(un));
/* not already writing to */
ASSERT(! (column->un_devflags & MD_RAID_WRITE_ALT));
/* not already open */
ASSERT(! (column->un_devflags & MD_RAID_ALT_ISOPEN));
if (tmpdev != NODEV64) {
/*
* Open by device id. We use orig_key since alt_dev
* has been set by the caller to be the same as orig_dev.
*/
if ((md_getmajor(tmpdev) != md_major) &&
md_devid_found(setno, side, column->un_orig_key) == 1) {
tmpdev = md_resolve_bydevid(MD_SID(un), tmpdev,
column->un_orig_key);
}
if (md_layered_open(MD_SID(un), &tmpdev, MD_OFLG_NULL)) {
/* failed open */
column->un_alt_dev = tmpdev;
return (1);
} else {
/* open suceeded */
column->un_alt_dev = tmpdev;
column->un_devflags |= MD_RAID_ALT_ISOPEN;
return (0);
}
} else
/* no alt device to open */
return (1);
}
/*ARGSUSED*/
static int
stripe_get(void *d, int mode, IOLOCK *lock)
{
minor_t mnum;
mdi_unit_t *ui;
ms_unit_t *un;
md_error_t *mdep;
md_i_get_t *migp = d;
mnum = migp->id;
mdep = &migp->mde;
mdclrerror(mdep);
if ((MD_MIN2SET(mnum) >= md_nsets) || (MD_MIN2UNIT(mnum) >= md_nunits))
return (mdmderror(mdep, MDE_INVAL_UNIT, mnum));
if ((ui = MDI_UNIT(mnum)) == NULL) {
return (mdmderror(mdep, MDE_UNIT_NOT_SETUP, mnum));
}
un = (ms_unit_t *)md_ioctl_readerlock(lock, ui);
if (migp->size == 0) {
migp->size = un->c.un_size;
return (0);
}
if (migp->size < un->c.un_size) {
return (EFAULT);
}
if (ddi_copyout(un, (void *)(uintptr_t)migp->mdp,
un->c.un_size, mode))
return (EFAULT);
return (0);
}
/*
* grow generic device
*/
int
meta_concat_generic(
mdsetname_t *sp,
mdname_t *namep,
u_longlong_t big_or_little,
md_error_t *ep
)
{
md_grow_params_t mgp;
char *miscname;
/* should have a set */
assert(sp != NULL);
assert(sp->setno == MD_MIN2SET(meta_getminor(namep->dev)));
/* get type */
if ((miscname = metagetmiscname(namep, ep)) == NULL)
return (-1);
/* grow device */
(void) memset(&mgp, 0, sizeof (mgp));
if (big_or_little & MD_64BIT_META_DEV)
mgp.options = MD_CRO_64BIT;
else
mgp.options = MD_CRO_32BIT;
mgp.mnum = meta_getminor(namep->dev);
MD_SETDRIVERNAME(&mgp, miscname, sp->setno);
if (metaioctl(MD_IOCGROW, &mgp, &mgp.mde, namep->cname) != 0)
return (mdstealerror(ep, &mgp.mde));
/* clear cache */
meta_invalidate_name(namep);
/* return success */
return (0);
}
/*
* NAME: check_comp_4_hs
*
* DESCRIPTION: Check whether the input component has an error and can be
* backed with a hot spare (RCS_ERRED state), and initiate
* a resync if so.
*
* PARAMETERS: mr_unit_t *un - raid unit
* int hs_index - component to check
*
* LOCKS: Expects Unit Writer Lock to be held upon entrance. Releases
* the lock prior to calling raid_resync_unit, then reacquires
* it before returning.
*/
static void
check_comp_4_hs(
mr_unit_t *un,
int hs_index
)
{
mddb_recid_t recids[3];
minor_t mnum = MD_SID(un);
mdi_unit_t *ui;
rcs_state_t state;
diskaddr_t size;
int err;
mr_column_t *col;
md_error_t mde = mdnullerror;
char devname[MD_MAX_CTDLEN];
char hs_devname[MD_MAX_CTDLEN];
set_t setno;
md_dev64_t tmpdev;
diskaddr_t tmpdaddr;
/* initialize */
setno = MD_UN2SET(un);
ui = MDI_UNIT(mnum);
md_unit_readerexit(ui);
(void) md_io_writerlock(ui);
un = (mr_unit_t *)md_unit_writerlock(ui);
col = &un->un_column[hs_index];
/*
* add a hotspare for erred column only if not resyncing
*/
if ((!(COLUMN_STATE(un, hs_index) & RCS_ERRED)) ||
(raid_state_cnt(un, (RCS_ERRED | RCS_LAST_ERRED)) != 1) ||
(raid_state_cnt(un, RCS_RESYNC) > 0)) {
goto errout;
}
recids[0] = 0;
recids[1] = 0;
/* if there is already a hotspare then just return */
if (HOTSPARED(un, hs_index) && (col->un_devstate & RCS_ERRED)) {
raid_hs_release(HS_BAD, un, &recids[0], hs_index);
cmn_err(CE_WARN, "md: %s: %s hotspare errored and released",
md_shortname(mnum),
md_devname(MD_MIN2SET(mnum), col->un_dev, NULL, 0));
col->un_dev = col->un_orig_dev;
col->un_pwstart = col->un_orig_pwstart;
col->un_devstart = col->un_orig_devstart;
raid_commit(un, recids);
SE_NOTIFY(EC_SVM_STATE, ESC_SVM_HS_FREED, SVM_TAG_METADEVICE,
setno, MD_SID(un));
}
ASSERT(!HOTSPARED(un, hs_index));
state = col->un_devstate;
size = col->un_pwstart + un->un_pwsize +
(un->un_segsize * un->un_segsincolumn);
again:
/* quit if resync is already active */
col->un_devflags |= MD_RAID_REGEN_RESYNC;
if (resync_request(mnum, hs_index, 0, NULL))
goto errout;
recids[0] = 0;
recids[1] = 0;
tmpdev = col->un_dev;
tmpdaddr = col->un_hs_pwstart;
/* get a hotspare */
if (md_hot_spare_ifc(HS_GET, un->un_hsp_id, size,
((col->un_orig_pwstart >= 1) &&
(col->un_orig_pwstart != MD_DISKADDR_ERROR)),
&col->un_hs_id, &col->un_hs_key, &tmpdev, &tmpdaddr) != 0) {
col->un_dev = tmpdev;
col->un_hs_pwstart = tmpdaddr;
release_resync_request(mnum);
raid_set_state(un, hs_index, state, 1);
goto errout;
}
col->un_hs_pwstart = tmpdaddr;
/*
* record id is filled in by raid_commit, recids[0] filled in by
* md_hot_spare_ifc if needed
*/
recids[0] = col->un_hs_id;
recids[1] = 0;
/*
* close the device and open the hot spare. The device should
* never be a hotspare here.
*/
if (col->un_devflags & MD_RAID_DEV_ISOPEN) {
md_layered_close(col->un_orig_dev, MD_OFLG_NULL);
col->un_devflags &= ~MD_RAID_DEV_ISOPEN;
}
/*
* Try open by device id
*/
tmpdev = md_resolve_bydevid(mnum, tmpdev, col->un_hs_key);
if (md_layered_open(mnum, &tmpdev, MD_OFLG_NULL)) {
md_dev64_t hs_dev = tmpdev;
/* cannot open return to orig */
raid_hs_release(HS_BAD, un, &recids[0], hs_index);
release_resync_request(mnum);
raid_set_state(un, hs_index, state, 1);
col->un_dev = col->un_orig_dev;
col->un_devstart = col->un_orig_devstart;
col->un_pwstart = col->un_orig_pwstart;
col->un_devflags &= ~MD_RAID_DEV_ISOPEN;
raid_commit(un, recids);
cmn_err(CE_WARN, "md: %s: open error of hotspare %s",
md_shortname(mnum),
md_devname(MD_MIN2SET(mnum), hs_dev, NULL, 0));
SE_NOTIFY(EC_SVM_STATE, ESC_SVM_HS_FREED, SVM_TAG_HS, setno,
MD_SID(un));
goto again;
}
col->un_dev = tmpdev;
col->un_devflags |= MD_RAID_DEV_ISOPEN;
/*
* move the values into the device fields. Since in some cases
* the pwstart is not zero this must be added into the start of
* the hotspare to avoid over writting the label
*/
col->un_hs_pwstart += col->un_orig_pwstart;
col->un_pwstart = col->un_hs_pwstart;
col->un_hs_devstart = col->un_hs_pwstart + un->un_pwsize;
col->un_devstart = col->un_hs_devstart;
/* commit unit and hotspare records and release lock */
raid_commit(un, recids);
md_unit_writerexit(ui);
md_io_writerexit(ui);
err = raid_resync_unit(mnum, &mde);
/* if resync fails, transition back to erred state and reset */
if (err) {
/* reaquire unit writerr lock */
un = (mr_unit_t *)md_unit_writerlock(ui);
raid_set_state(un, hs_index, RCS_ERRED, 0);
/*
* close the hotspare and return it. Then restore the
* original device back to the original state
*/
raid_hs_release(HS_FREE, un, &recids[0], hs_index);
col->un_dev = col->un_orig_dev;
col->un_devstart = col->un_orig_devstart;
col->un_pwstart = col->un_orig_pwstart;
raid_commit(un, recids);
md_unit_writerexit(ui);
un = (mr_unit_t *)md_unit_readerlock(ui);
return;
}
setno = MD_MIN2SET(mnum);
(void) md_devname(setno, col->un_orig_dev, devname,
sizeof (devname));
(void) md_devname(setno, col->un_dev, hs_devname,
sizeof (hs_devname));
cmn_err(CE_NOTE, "md: %s: hotspared device %s with %s",
md_shortname(mnum), devname, hs_devname);
SE_NOTIFY(EC_SVM_STATE, ESC_SVM_HOTSPARED, SVM_TAG_HS, setno,
MD_SID(un));
(void) md_unit_readerlock(ui);
return;
errout:
md_unit_writerexit(ui);
md_io_writerexit(ui);
un = (mr_unit_t *)md_unit_readerlock(ui);
}
static int
stripe_change(
md_stripe_params_t *msp,
IOLOCK *lock
)
{
ms_params_t *pp = &msp->params;
minor_t mnum = msp->mnum;
ms_unit_t *un;
mdi_unit_t *ui;
int r, c, i;
struct ms_row *mdr;
ms_comp_t *mdcomp, *mdc;
mddb_recid_t recids[4];
int irecid;
int inc_new_hsp = 0;
int err;
set_t setno = MD_MIN2SET(mnum);
mdclrerror(&msp->mde);
if ((setno >= md_nsets) || (MD_MIN2UNIT(mnum) >= md_nunits))
return (mdmderror(&msp->mde, MDE_INVAL_UNIT, mnum));
if (md_get_setstatus(setno) & MD_SET_STALE)
return (mdmddberror(&msp->mde, MDE_DB_STALE, mnum, setno));
if ((ui = MDI_UNIT(mnum)) == NULL) {
return (mdmderror(&msp->mde, MDE_UNIT_NOT_SETUP, mnum));
}
if (!pp->change_hsp_id)
return (0);
un = (ms_unit_t *)md_ioctl_writerlock(lock, ui);
/* verify that no hot spares are in use */
mdcomp = (struct ms_comp *)((void *)&((char *)un)[un->un_ocomp]);
for (r = 0; r < un->un_nrows; r++) {
mdr = &un->un_row[r];
for (c = 0, i = mdr->un_icomp; c < mdr->un_ncomp; c++) {
mdc = &mdcomp[i++];
if (mdc->un_mirror.ms_hs_id != 0) {
return (mdmderror(&msp->mde, MDE_HS_IN_USE,
mnum));
}
}
}
recids[1] = 0;
recids[2] = 0;
irecid = 1;
if (pp->hsp_id != -1) {
/* increment the reference count of the new hsp */
err = md_hot_spare_ifc(HSP_INCREF, pp->hsp_id, 0, 0,
&recids[1], NULL, NULL, NULL);
if (err) {
return (mdhsperror(&msp->mde, MDE_INVAL_HSP,
pp->hsp_id));
}
inc_new_hsp = 1;
irecid++;
}
if (un->un_hsp_id != -1) {
/* decrement the reference count of the old hsp */
err = md_hot_spare_ifc(HSP_DECREF, un->un_hsp_id, 0, 0,
&recids[irecid], NULL, NULL, NULL);
if (err) {
err = mdhsperror(&msp->mde, MDE_INVAL_HSP,
pp->hsp_id);
if (inc_new_hsp) {
(void) md_hot_spare_ifc(HSP_DECREF,
pp->hsp_id, 0, 0,
&recids[1], NULL, NULL, NULL);
/*
* Don't need to commit the record,
* cause it never got commit before
*/
}
return (err);
}
}
un->un_hsp_id = pp->hsp_id;
recids[0] = un->c.un_record_id;
recids[3] = 0;
mddb_commitrecs_wrapper(recids);
SE_NOTIFY(EC_SVM_STATE, ESC_SVM_CHANGE, SVM_TAG_METADEVICE,
MD_UN2SET(un), MD_SID(un));
return (0);
}
static int
stripe_getdevs(
void *d,
int mode,
IOLOCK *lock
)
{
minor_t mnum;
mdi_unit_t *ui;
ms_unit_t *un;
struct ms_row *mdr;
ms_comp_t *mdcomp, *mdc;
int r, c, i;
int cnt;
md_error_t *mdep;
md_dev64_t *devsp;
md_dev64_t unit_dev;
md_getdevs_params_t *mgdp = d;
mnum = mgdp->mnum;
mdep = &mgdp->mde;
/* check out unit */
mdclrerror(mdep);
if ((MD_MIN2SET(mnum) >= md_nsets) || (MD_MIN2UNIT(mnum) >= md_nunits))
return (mdmderror(mdep, MDE_INVAL_UNIT, mnum));
if ((ui = MDI_UNIT(mnum)) == NULL) {
return (mdmderror(mdep, MDE_UNIT_NOT_SETUP, mnum));
}
un = (ms_unit_t *)md_ioctl_readerlock(lock, ui);
mdcomp = (struct ms_comp *)((void *)&((char *)un)[un->un_ocomp]);
devsp = (md_dev64_t *)(uintptr_t)mgdp->devs;
for (cnt = 0, r = 0; (r < un->un_nrows); ++r) {
mdr = &un->un_row[r];
for (c = 0, i = mdr->un_icomp; (c < mdr->un_ncomp); ++c) {
mdc = &mdcomp[i++];
if (cnt < mgdp->cnt) {
unit_dev = mdc->un_dev;
if (md_getmajor(unit_dev) != md_major) {
if ((unit_dev = md_xlate_mini_2_targ
(unit_dev)) == NODEV64)
return (ENODEV);
}
if (ddi_copyout((caddr_t)&unit_dev, devsp,
sizeof (*devsp), mode) != 0)
return (EFAULT);
++devsp;
}
++cnt;
}
}
mgdp->cnt = cnt;
return (0);
}
static int
stripe_open_all_devs(ms_unit_t *un, int md_oflags)
{
minor_t mnum = MD_SID(un);
int row;
int i;
int c;
struct ms_comp *mdcomp;
int err;
int cont_on_errors = (md_oflags & MD_OFLG_CONT_ERRS);
int probe_err_cnt = 0;
int total_comp_cnt = 0;
set_t setno = MD_MIN2SET(MD_SID(un));
side_t side = mddb_getsidenum(setno);
mdkey_t key;
mdcomp = (struct ms_comp *)((void *)&((char *)un)[un->un_ocomp]);
/*
* For a probe call, if any component of a stripe or a concat
* can be opened, it is considered to be a success. The total number
* of components in a stripe are computed prior to starting a probe.
* This number is then compared against the number of components
* that could be be successfully opened. If none of the components
* in a stripe can be opened, only then an ENXIO is returned for a
* probe type open.
*/
for (row = 0; row < un->un_nrows; row++) {
struct ms_row *mdr = &un->un_row[row];
if (md_oflags & MD_OFLG_PROBEDEV)
total_comp_cnt += mdr->un_ncomp;
for (i = 0, c = mdr->un_icomp; i < mdr->un_ncomp; i++) {
struct ms_comp *mdc;
md_dev64_t tmpdev;
mdc = &mdcomp[c++];
tmpdev = mdc->un_dev;
/*
* Do the open by device id
* Check if this comp is hotspared and
* if it is then use the key for hotspare.
* MN disksets don't use devids, so we better don't use
* md_devid_found/md_resolve_bydevid there. Rather do,
* what's done in stripe_build_incore()
*/
if (MD_MNSET_SETNO(setno)) {
if (mdc->un_mirror.ms_hs_id != 0) {
(void) md_hot_spare_ifc(HS_MKDEV, 0, 0,
0, &mdc->un_mirror.ms_hs_id, NULL,
&tmpdev, NULL);
}
} else {
key = mdc->un_mirror.ms_hs_id ?
mdc->un_mirror.ms_hs_key : mdc->un_key;
if ((md_getmajor(tmpdev) != md_major) &&
md_devid_found(setno, side, key) == 1) {
tmpdev = md_resolve_bydevid(mnum,
tmpdev, key);
}
}
/*
* For a submirror, we only want to open those devices
* that are not errored. If the device is errored then
* then there is no reason to open it and leaving it
* closed allows the RCM/DR code to work so that the
* errored device can be replaced.
*/
if ((md_oflags & MD_OFLG_PROBEDEV) ||
! (mdc->un_mirror.ms_state & CS_ERRED)) {
err = md_layered_open(mnum, &tmpdev, md_oflags);
} else {
err = ENXIO;
}
/*
* Only set the un_dev if the tmpdev != NODEV64. If
* it is NODEV64 then the md_layered_open() will have
* failed in some manner.
*/
if (tmpdev != NODEV64)
mdc->un_dev = tmpdev;
if (err) {
if (!cont_on_errors) {
stripe_close_all_devs(un, md_oflags);
return (ENXIO);
}
if (md_oflags & MD_OFLG_PROBEDEV)
probe_err_cnt++;
} else {
if (md_oflags & MD_OFLG_PROBEDEV) {
mdc->un_mirror.ms_flags |=
MDM_S_PROBEOPEN;
} else
mdc->un_mirror.ms_flags |= MDM_S_ISOPEN;
}
}
}
/* If every component in a stripe could not be opened fail */
if ((md_oflags & MD_OFLG_PROBEDEV) &&
(probe_err_cnt == total_comp_cnt))
return (ENXIO);
else
return (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);
}
/*
* The parameters of md_stripe_ioctl are defined by the ddi and so
* dev is of type dev_t and not md_dev64_t
*/
int
md_stripe_ioctl(dev_t dev, int cmd, void *data, int mode, IOLOCK *lockp)
{
minor_t mnum = getminor(dev);
ms_unit_t *un;
int err = 0;
/* handle admin ioctls */
if (mnum == MD_ADM_MINOR)
return (stripe_admin_ioctl(cmd, data, mode, lockp));
/* check unit */
if ((MD_MIN2SET(mnum) >= md_nsets) ||
(MD_MIN2UNIT(mnum) >= md_nunits) ||
((un = MD_UNIT(mnum)) == NULL))
return (ENXIO);
/* is this a supported ioctl? */
err = md_check_ioctl_against_unit(cmd, un->c);
if (err != 0) {
return (err);
}
/* handle ioctl */
switch (cmd) {
case DKIOCINFO:
{
struct dk_cinfo *p;
if (! (mode & FREAD))
return (EACCES);
p = kmem_alloc(sizeof (*p), KM_SLEEP);
get_info(p, mnum);
if (ddi_copyout((caddr_t)p, data, sizeof (*p), mode) != 0)
err = EFAULT;
kmem_free(p, sizeof (*p));
return (err);
}
case DKIOCGMEDIAINFO:
{
struct dk_minfo p;
if (! (mode & FREAD))
return (EACCES);
get_minfo(&p, mnum);
if (ddi_copyout(&p, data, sizeof (struct dk_minfo), mode) != 0)
err = EFAULT;
return (err);
}
case DKIOCGGEOM:
{
struct dk_geom *p;
if (! (mode & FREAD))
return (EACCES);
p = kmem_alloc(sizeof (*p), KM_SLEEP);
if ((err = stripe_get_geom(un, p)) == 0) {
if (ddi_copyout((caddr_t)p, data, sizeof (*p),
mode) != 0)
err = EFAULT;
}
kmem_free(p, sizeof (*p));
return (err);
}
case DKIOCGVTOC:
{
struct vtoc *vtoc;
if (! (mode & FREAD))
return (EACCES);
vtoc = kmem_zalloc(sizeof (*vtoc), KM_SLEEP);
if ((err = stripe_get_vtoc(un, vtoc)) != 0) {
kmem_free(vtoc, sizeof (*vtoc));
return (err);
}
if ((mode & DATAMODEL_MASK) == DATAMODEL_NATIVE) {
if (ddi_copyout(vtoc, data, sizeof (*vtoc), mode))
err = EFAULT;
}
#ifdef _SYSCALL32
else {
struct vtoc32 *vtoc32;
vtoc32 = kmem_zalloc(sizeof (*vtoc32), KM_SLEEP);
vtoctovtoc32((*vtoc), (*vtoc32));
if (ddi_copyout(vtoc32, data, sizeof (*vtoc32), mode))
err = EFAULT;
kmem_free(vtoc32, sizeof (*vtoc32));
}
#endif /* _SYSCALL32 */
kmem_free(vtoc, sizeof (*vtoc));
return (err);
}
case DKIOCSVTOC:
{
struct vtoc *vtoc;
if (! (mode & FWRITE))
return (EACCES);
vtoc = kmem_zalloc(sizeof (*vtoc), KM_SLEEP);
if ((mode & DATAMODEL_MASK) == DATAMODEL_NATIVE) {
if (ddi_copyin(data, vtoc, sizeof (*vtoc), mode)) {
err = EFAULT;
}
}
#ifdef _SYSCALL32
else {
struct vtoc32 *vtoc32;
vtoc32 = kmem_zalloc(sizeof (*vtoc32), KM_SLEEP);
if (ddi_copyin(data, vtoc32, sizeof (*vtoc32), mode)) {
err = EFAULT;
} else {
vtoc32tovtoc((*vtoc32), (*vtoc));
}
kmem_free(vtoc32, sizeof (*vtoc32));
}
#endif /* _SYSCALL32 */
if (err == 0) {
err = stripe_set_vtoc(un, vtoc);
}
kmem_free(vtoc, sizeof (*vtoc));
return (err);
}
case DKIOCGEXTVTOC:
{
struct extvtoc *extvtoc;
if (! (mode & FREAD))
return (EACCES);
extvtoc = kmem_zalloc(sizeof (*extvtoc), KM_SLEEP);
if ((err = stripe_get_extvtoc(un, extvtoc)) != 0) {
kmem_free(extvtoc, sizeof (*extvtoc));
return (err);
}
if (ddi_copyout(extvtoc, data, sizeof (*extvtoc), mode))
err = EFAULT;
kmem_free(extvtoc, sizeof (*extvtoc));
return (err);
}
case DKIOCSEXTVTOC:
{
struct extvtoc *extvtoc;
if (! (mode & FWRITE))
return (EACCES);
extvtoc = kmem_zalloc(sizeof (*extvtoc), KM_SLEEP);
if (ddi_copyin(data, extvtoc, sizeof (*extvtoc), mode)) {
err = EFAULT;
}
if (err == 0) {
err = stripe_set_extvtoc(un, extvtoc);
}
kmem_free(extvtoc, sizeof (*extvtoc));
return (err);
}
case DKIOCGAPART:
{
struct dk_map dmp;
if ((err = stripe_get_cgapart(un, &dmp)) != 0) {
return (err);
}
if ((mode & DATAMODEL_MASK) == DATAMODEL_NATIVE) {
if (ddi_copyout((caddr_t)&dmp, data, sizeof (dmp),
mode) != 0)
err = EFAULT;
}
#ifdef _SYSCALL32
else {
struct dk_map32 dmp32;
dmp32.dkl_cylno = dmp.dkl_cylno;
dmp32.dkl_nblk = dmp.dkl_nblk;
if (ddi_copyout((caddr_t)&dmp32, data, sizeof (dmp32),
mode) != 0)
err = EFAULT;
}
#endif /* _SYSCALL32 */
return (err);
}
case DKIOCGETEFI:
{
/*
* This one can be done centralized,
* no need to put in the same code for all types of metadevices
*/
return (md_dkiocgetefi(mnum, data, mode));
}
case DKIOCSETEFI:
{
/*
* This one can be done centralized,
* no need to put in the same code for all types of metadevices
*/
return (md_dkiocsetefi(mnum, data, mode));
}
case DKIOCPARTITION:
{
return (md_dkiocpartition(mnum, data, mode));
}
default:
return (ENOTTY);
}
}
void
reset_stripe(ms_unit_t *un, minor_t mnum, int removing)
{
ms_comp_t *mdcomp;
struct ms_row *mdr;
int i, c;
int row;
int nsv;
int isv;
sv_dev_t *sv;
mddb_recid_t *recids;
mddb_recid_t vtoc_id;
int rid = 0;
md_destroy_unit_incore(mnum, &stripe_md_ops);
md_nblocks_set(mnum, -1ULL);
MD_UNIT(mnum) = NULL;
/*
* Attempt release of its minor node
*/
md_remove_minor_node(mnum);
if (!removing)
return;
nsv = 0;
/* Count the number of devices */
for (row = 0; row < un->un_nrows; row++) {
mdr = &un->un_row[row];
nsv += mdr->un_ncomp;
}
sv = (sv_dev_t *)kmem_alloc(sizeof (sv_dev_t) * nsv, KM_SLEEP);
/*
* allocate recids array. since we may have to commit
* underlying soft partition records, we need an array
* of size: total number of components in stripe + 3
* (one for the stripe itself, one for the hotspare, one
* for the end marker).
*/
recids = kmem_alloc(sizeof (mddb_recid_t) * (nsv + 3), KM_SLEEP);
/*
* Save the md_dev64_t's and driver nm indexes.
* Because after the mddb_deleterec() we will
* not be able to access the unit structure.
*
* NOTE: Deleting the names before deleting the
* unit structure would cause problems if
* the machine crashed in between the two.
*/
isv = 0;
mdcomp = (struct ms_comp *)((void *)&((char *)un)[un->un_ocomp]);
for (row = 0; row < un->un_nrows; row++) {
mdr = &un->un_row[row];
for (i = 0, c = mdr->un_icomp; i < mdr->un_ncomp; i++) {
struct ms_comp *mdc;
md_dev64_t child_dev;
md_unit_t *child_un;
mdc = &mdcomp[c++];
if (mdc->un_mirror.ms_hs_id != 0) {
mdkey_t hs_key;
hs_key = mdc->un_mirror.ms_hs_key;
mdc->un_dev = mdc->un_mirror.ms_orig_dev;
mdc->un_start_block =
mdc->un_mirror.ms_orig_blk;
mdc->un_mirror.ms_hs_id = 0;
mdc->un_mirror.ms_hs_key = 0;
mdc->un_mirror.ms_orig_dev = 0;
recids[0] = 0;
recids[1] = 0; /* recids[1] filled in below */
recids[2] = 0;
(void) md_hot_spare_ifc(HS_FREE, un->un_hsp_id,
0, 0, &recids[0], &hs_key, NULL, NULL);
mddb_commitrecs_wrapper(recids);
}
/*
* check if we've got metadevice below us and
* deparent it if we do.
* NOTE: currently soft partitions are the
* the only metadevices stripes can be
* built on top of.
*/
child_dev = mdc->un_dev;
if (md_getmajor(child_dev) == md_major) {
child_un = MD_UNIT(md_getminor(child_dev));
md_reset_parent(child_dev);
recids[rid++] = MD_RECID(child_un);
}
sv[isv].setno = MD_MIN2SET(mnum);
sv[isv++].key = mdc->un_key;
}
}
recids[rid++] = un->c.un_record_id;
recids[rid] = 0; /* filled in below */
/*
* Decrement the HSP reference count and
* remove the knowledge of the HSP from the unit struct.
* This is done atomically to remove a window.
*/
if (un->un_hsp_id != -1) {
(void) md_hot_spare_ifc(HSP_DECREF, un->un_hsp_id, 0, 0,
&recids[rid++], NULL, NULL, NULL);
un->un_hsp_id = -1;
}
/* set end marker and commit records */
recids[rid] = 0;
mddb_commitrecs_wrapper(recids);
vtoc_id = un->c.un_vtoc_id;
/*
* Remove self from the namespace
*/
if (un->c.un_revision & MD_FN_META_DEV) {
(void) md_rem_selfname(un->c.un_self_id);
}
/* Remove the unit structure */
mddb_deleterec_wrapper(un->c.un_record_id);
/* Remove the vtoc, if present */
if (vtoc_id)
mddb_deleterec_wrapper(vtoc_id);
SE_NOTIFY(EC_SVM_CONFIG, ESC_SVM_DELETE, SVM_TAG_METADEVICE,
MD_MIN2SET(mnum), MD_MIN2UNIT(mnum));
md_rem_names(sv, nsv);
kmem_free(sv, sizeof (sv_dev_t) * nsv);
kmem_free(recids, sizeof (mddb_recid_t) * (nsv + 3));
}
int
stripe_build_incore(void *p, int snarfing)
{
ms_unit_t *un = (ms_unit_t *)p;
struct ms_comp *mdcomp;
minor_t mnum;
int row;
int i;
int c;
int ncomps;
mnum = MD_SID(un);
if (MD_UNIT(mnum) != NULL)
return (0);
MD_STATUS(un) = 0;
/*
* Reset all the is_open flags, these are probably set
* cause they just came out of the database.
*/
mdcomp = (struct ms_comp *)((void *)&((char *)un)[un->un_ocomp]);
ncomps = 0;
for (row = 0; row < un->un_nrows; row++) {
struct ms_row *mdr = &un->un_row[row];
ncomps += mdr->un_ncomp;
}
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++) {
struct ms_comp *mdc;
set_t setno;
md_dev64_t tmpdev;
mdc = &mdcomp[c++];
mdc->un_mirror.ms_flags &=
~(MDM_S_ISOPEN | MDM_S_IOERR | MDM_S_RS_TRIED);
if (!snarfing)
continue;
setno = MD_MIN2SET(mnum);
tmpdev = md_getdevnum(setno, mddb_getsidenum(setno),
mdc->un_key, MD_NOTRUST_DEVT);
mdc->un_dev = tmpdev;
/*
* Check for hotspares. If the hotspares haven't been
* snarfed yet, stripe_open_all_devs() will do the
* remapping of the dev's later.
*/
if (mdc->un_mirror.ms_hs_id != 0) {
mdc->un_mirror.ms_orig_dev = mdc->un_dev;
(void) md_hot_spare_ifc(HS_MKDEV, 0, 0,
0, &mdc->un_mirror.ms_hs_id, NULL,
&tmpdev, NULL);
mdc->un_dev = tmpdev;
}
}
}
/* place various information in the in-core data structures */
md_nblocks_set(mnum, un->c.un_total_blocks);
MD_UNIT(mnum) = un;
return (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);
}
static void
md_stripe_strategy(buf_t *pb, int flag, void *private)
{
md_sps_t *ps;
md_scs_t *cs;
int doing_writes;
int more;
ms_unit_t *un;
mdi_unit_t *ui;
size_t current_count;
diskaddr_t current_blkno;
off_t current_offset;
buf_t *cb; /* child buf pointer */
set_t setno;
setno = MD_MIN2SET(getminor(pb->b_edev));
/*
* When doing IO to a multi owner meta device, check if set is halted.
* We do this check without the needed lock held, for performance
* reasons.
* If an IO just slips through while the set is locked via an
* MD_MN_SUSPEND_SET, we don't care about it.
* Only check for a suspended set if we are a top-level i/o request
* (MD_STR_NOTTOP is cleared in 'flag').
*/
if ((md_set[setno].s_status & (MD_SET_HALTED | MD_SET_MNSET)) ==
(MD_SET_HALTED | MD_SET_MNSET)) {
if ((flag & MD_STR_NOTTOP) == 0) {
mutex_enter(&md_mx);
/* Here we loop until the set is no longer halted */