#include <linux/obd_class.h>
#include <linux/obd_lov.h>
#include <linux/init.h>
-
-extern struct obd_device obd_dev[MAX_OBD_DEVICES];
+#include <asm/div64.h>
/* obd methods */
static int lov_connect(struct lustre_handle *conn, struct obd_device *obd,
{
struct ptlrpc_request *req;
struct lov_obd *lov = &obd->u.lov;
+ struct client_obd *mdc = &lov->mdcobd->u.cli;
+ struct lov_desc *desc = &lov->desc;
struct lustre_handle mdc_conn;
uuid_t *uuidarray;
int rc, rc2;
GOTO(out, rc = -EINVAL);
}
- rc = mdc_getlovinfo(obd, &mdc_conn, &uuidarray, &req);
+ rc = mdc_getlovinfo(obd, &mdc_conn, &req);
rc2 = obd_disconnect(&mdc_conn);
if (rc || rc2) {
CERROR("cannot get lov info or disconnect %d/%d\n", rc, rc2);
}
/* sanity... */
- if (strcmp(obd->obd_uuid, lov->desc.ld_uuid)) {
- CERROR("lov uuid %s not on mds device (%s)\n",
- obd->obd_uuid, lov->desc.ld_uuid);
+ if (req->rq_repmsg->bufcount < 2 ||
+ req->rq_repmsg->buflens[0] < sizeof(*desc)) {
+ CERROR("LOV desc: invalid descriptor returned\n");
+ GOTO(out, rc = -EINVAL);
+ }
+
+ memcpy(desc, lustre_msg_buf(req->rq_repmsg, 0), sizeof(*desc));
+ lov_unpackdesc(desc);
+
+ if (req->rq_repmsg->buflens[1] < sizeof(*uuidarray)*desc->ld_tgt_count){
+ CERROR("LOV desc: invalid uuid array returned\n");
+ GOTO(out, rc = -EINVAL);
+ }
+
+ mdc->cl_max_mds_easize = lov_mds_md_size(desc->ld_tgt_count);
+ mdc->cl_max_ost_easize = lov_stripe_md_size(desc->ld_tgt_count);
+
+ if (memcmp(obd->obd_uuid, desc->ld_uuid, sizeof(desc->ld_uuid))) {
+ CERROR("LOV desc: uuid %s not on mds device (%s)\n",
+ obd->obd_uuid, desc->ld_uuid);
GOTO(out, rc = -EINVAL);
}
- if (lov->desc.ld_tgt_count > 1000) {
- CERROR("configuration error: target count > 1000 (%d)\n",
- lov->desc.ld_tgt_count);
+
+ if (desc->ld_tgt_count > 1000) {
+ CERROR("LOV desc: target count > 1000 (%d)\n",
+ desc->ld_tgt_count);
GOTO(out, rc = -EINVAL);
}
- if (req->rq_repmsg->bufcount < 2 || req->rq_repmsg->buflens[1] <
- sizeof(uuid_t) * lov->desc.ld_tgt_count) {
- CERROR("invalid uuid array returned\n");
+
+ if (desc->ld_default_stripe_count == 0)
+ desc->ld_default_stripe_count = desc->ld_tgt_count;
+
+ /* Because of 64-bit divide/mod operations only work with a 32-bit
+ * divisor in a 32-bit kernel, we cannot support a stripe width
+ * of 4GB or larger.
+ */
+ if (desc->ld_default_stripe_size * desc->ld_tgt_count > ~0UL) {
+ CERROR("LOV desc: stripe width > %lu on 32-bit system\n",
+ ~0UL);
GOTO(out, rc = -EINVAL);
}
- lov->bufsize = sizeof(struct lov_tgt_desc) * lov->desc.ld_tgt_count;
+ lov->bufsize = sizeof(struct lov_tgt_desc) * desc->ld_tgt_count;
OBD_ALLOC(lov->tgts, lov->bufsize);
if (!lov->tgts) {
CERROR("Out of memory\n");
}
uuidarray = lustre_msg_buf(req->rq_repmsg, 1);
- for (i = 0 ; i < lov->desc.ld_tgt_count; i++)
- memcpy(lov->tgts[i].uuid, uuidarray[i], sizeof(uuid_t));
+ for (i = 0 ; i < desc->ld_tgt_count; i++)
+ memcpy(lov->tgts[i].uuid, uuidarray[i], sizeof(*uuidarray));
- for (i = 0 ; i < lov->desc.ld_tgt_count; i++) {
+ for (i = 0 ; i < desc->ld_tgt_count; i++) {
struct obd_device *tgt = class_uuid2obd(uuidarray[i]);
if (!tgt) {
CERROR("Target %s not attached\n", uuidarray[i]);
if (!(tgt->obd_flags & OBD_SET_UP)) {
CERROR("Target %s not set up\n", uuidarray[i]);
GOTO(out_mem, rc = -EINVAL);
- }
+ }
rc = obd_connect(&lov->tgts[i].conn, tgt, NULL);
if (rc) {
CERROR("Target %s connect error %d\n",
out_mem:
if (rc) {
- for (i = 0 ; i < lov->desc.ld_tgt_count; i++) {
+ for (i = 0 ; i < desc->ld_tgt_count; i++) {
rc2 = obd_disconnect(&lov->tgts[i].conn);
if (rc2)
CERROR("BAD: Target %s disconnect error %d\n",
struct obd_device *obd = class_conn2obd(conn);
struct lov_obd *lov = &obd->u.lov;
int rc;
- int i;
+ int i;
if (!lov->tgts)
goto out_local;
- for (i = 0 ; i < lov->desc.ld_tgt_count; i++) {
+ for (i = 0 ; i < lov->desc.ld_tgt_count; i++) {
rc = obd_disconnect(&lov->tgts[i].conn);
- if (rc) {
- CERROR("Target %s disconnect error %d\n",
- lov->tgts[i].uuid, rc);
+ if (rc) {
+ CERROR("Target %s disconnect error %d\n",
+ lov->tgts[i].uuid, rc);
RETURN(rc);
}
}
OBD_FREE(lov->tgts, lov->bufsize);
lov->bufsize = 0;
- lov->tgts = NULL;
+ lov->tgts = NULL;
out_local:
rc = class_disconnect(conn);
}
if (data->ioc_inllen1 > 37) {
- CERROR("mdc UUID must be less than 38 characters\n");
+ CERROR("mdc UUID must be 36 characters or less\n");
RETURN(-EINVAL);
}
- lov->mdcobd = class_uuid2obd(data->ioc_inlbuf1);
- if (!lov->mdcobd) {
- CERROR("LOV %s cannot locate MDC %s\n", obd->obd_uuid,
- data->ioc_inlbuf1);
+ lov->mdcobd = class_uuid2obd(data->ioc_inlbuf1);
+ if (!lov->mdcobd) {
+ CERROR("LOV %s cannot locate MDC %s\n", obd->obd_uuid,
+ data->ioc_inlbuf1);
rc = -EINVAL;
}
- RETURN(rc);
-}
-
-
-static inline int lov_stripe_md_size(struct obd_device *obd)
-{
- struct lov_obd *lov = &obd->u.lov;
- int size;
-
- size = sizeof(struct lov_stripe_md) +
- lov->desc.ld_tgt_count * sizeof(struct lov_oinfo);
- return size;
+ RETURN(rc);
}
-static inline int lov_mds_md_size(struct obd_device *obd)
-{
- struct lov_obd *lov = &obd->u.lov;
- int size;
-
- size = sizeof(struct lov_mds_md) +
- lov->desc.ld_tgt_count * sizeof(struct lov_object_id);
- return size;
-}
-/* the LOV counts on oa->o_id to be set as the LOV object id */
-static int lov_create(struct lustre_handle *conn, struct obdo *oa, struct lov_stripe_md **ea)
+/* the LOV expects oa->o_id to be set to the LOV object id */
+static int lov_create(struct lustre_handle *conn, struct obdo *oa,
+ struct lov_stripe_md **ea)
{
- int rc = 0, i;
- struct obdo tmp;
struct obd_export *export = class_conn2export(conn);
struct lov_obd *lov;
- struct lov_stripe_md *md;
+ struct lov_stripe_md *lsm;
+ struct lov_oinfo *loi;
+ int sub_offset, stripe_offset;
+ int ost_count;
+ int rc = 0, i;
ENTRY;
- if (!ea) {
- CERROR("lov_create needs EA for striping information\n");
- RETURN(-EINVAL);
+ if (!ea) {
+ CERROR("lov_create needs ea\n");
+ RETURN(-EINVAL);
}
+
if (!export)
RETURN(-EINVAL);
- lov = &export->exp_obd->u.lov;
- oa->o_easize = lov_stripe_md_size(export->exp_obd);
+ lov = &export->exp_obd->u.lov;
+ ost_count = lov->desc.ld_tgt_count;
+ oa->o_easize = lov_stripe_md_size(ost_count);
if (!*ea) {
- OBD_ALLOC(*ea, oa->o_easize);
- if (! *ea)
+ OBD_ALLOC(*ea, oa->o_easize);
+ if (!*ea)
RETURN(-ENOMEM);
}
- md = *ea;
- md->lmd_easize = lov_mds_md_size(export->exp_obd);
- md->lmd_object_id = oa->o_id;
- if (!md->lmd_stripe_count) {
- md->lmd_stripe_count = lov->desc.ld_default_stripe_count;
- }
+ lsm = *ea;
+ LASSERT(oa->o_valid & OBD_MD_FLID);
+ lsm->lsm_magic = LOV_MAGIC;
+ lsm->lsm_mds_easize = lov_mds_md_size(ost_count);
+ lsm->lsm_object_id = oa->o_id;
+ if (!lsm->lsm_stripe_count)
+ lsm->lsm_stripe_count = lov->desc.ld_default_stripe_count;
+
+ if (!lsm->lsm_stripe_size)
+ lsm->lsm_stripe_size = lov->desc.ld_default_stripe_size;
+
+ lsm->lsm_ost_count = ost_count;
+ stripe_offset = (((int)lsm->lsm_object_id * lsm->lsm_stripe_count) %
+ ost_count);
+ sub_offset = ((int)lsm->lsm_object_id*lsm->lsm_stripe_count/ost_count)%
+ lsm->lsm_stripe_count;
+ lsm->lsm_stripe_offset = stripe_offset + sub_offset;
- if (!md->lmd_stripe_size)
- md->lmd_stripe_size = lov->desc.ld_default_stripe_size;
+ CDEBUG(D_INODE, "allocating %d subobjs for objid "LPX64" at idx %d\n",
+ lsm->lsm_stripe_count,lsm->lsm_object_id,lsm->lsm_stripe_offset);
-
+ for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
+ struct lov_stripe_md obj_md;
+ struct lov_stripe_md *obj_mdp = &obj_md;
+ struct obdo tmp;
+ int ost_idx = (((sub_offset + i) % lsm->lsm_stripe_count) +
+ stripe_offset) % ost_count;
- for (i = 0; i < md->lmd_stripe_count; i++) {
- struct lov_stripe_md obj_md;
- struct lov_stripe_md *obj_mdp = &obj_md;
- /* create data objects with "parent" OA */
+ /* create data objects with "parent" OA */
memcpy(&tmp, oa, sizeof(tmp));
tmp.o_easize = sizeof(struct lov_stripe_md);
- rc = obd_create(&lov->tgts[i].conn, &tmp, &obj_mdp);
- if (rc)
- GOTO(out_cleanup, rc);
- md->lmd_oinfo[i].loi_id = tmp.o_id;
- md->lmd_oinfo[i].loi_size = tmp.o_size;
- }
-
- out_cleanup:
- if (rc) {
- int i2, rc2;
- for (i2 = 0 ; i2 < i ; i2++) {
- /* destroy already created objects here */
- tmp.o_id = md->lmd_oinfo[i].loi_id;
- rc2 = obd_destroy(&lov->tgts[i].conn, &tmp, NULL);
- if (rc2) {
- CERROR("Failed to remove object from target %d\n",
- i2);
- }
+ rc = obd_create(&lov->tgts[ost_idx].conn, &tmp, &obj_mdp);
+ if (rc) {
+ CERROR("error creating objid "LPX64" sub-object on "
+ "OST idx %d: rc = %d\n", oa->o_id, ost_idx, rc);
+ GOTO(out_cleanup, rc);
+ }
+ loi->loi_id = tmp.o_id;
+ loi->loi_size = tmp.o_size;
+ loi->loi_ost_idx = ost_idx;
+ CDEBUG(D_INODE, "objid "LPX64" has subobj "LPX64" at idx %d\n",
+ lsm->lsm_object_id, loi->loi_id, ost_idx);
+ }
+
+ out_cleanup:
+ if (rc) {
+ while (i-- > 0) {
+ struct obdo tmp;
+ int err;
+
+ --loi;
+ /* destroy already created objects here */
+ memcpy(&tmp, oa, sizeof(tmp));
+ tmp.o_id = loi->loi_id;
+ err = obd_destroy(&lov->tgts[loi->loi_ost_idx].conn,
+ &tmp, NULL);
+ if (err)
+ CERROR("Failed to remove objid "LPX64" subobj "
+ LPX64" on OST idx %d: rc = %d\n",
+ oa->o_id, loi->loi_id, loi->loi_ost_idx,
+ err);
}
}
return rc;
}
-static int lov_destroy(struct lustre_handle *conn, struct obdo *oa,
- struct lov_stripe_md *md)
+static int lov_destroy(struct lustre_handle *conn, struct obdo *oa,
+ struct lov_stripe_md *lsm)
{
- int rc = 0, i;
struct obdo tmp;
struct obd_export *export = class_conn2export(conn);
struct lov_obd *lov;
+ struct lov_oinfo *loi;
+ int rc = 0, i;
ENTRY;
- if (!md) {
- CERROR("LOV requires striping ea for desctruction\n");
- RETURN(-EINVAL);
+ if (!lsm) {
+ CERROR("LOV requires striping ea for destruction\n");
+ RETURN(-EINVAL);
}
- if (!export || !export->exp_obd)
- RETURN(-ENODEV);
+ if (lsm->lsm_magic != LOV_MAGIC) {
+ CERROR("LOV striping magic bad %#lx != %#lx\n",
+ lsm->lsm_magic, LOV_MAGIC);
+ RETURN(-EINVAL);
+ }
+
+ if (!export || !export->exp_obd)
+ RETURN(-ENODEV);
lov = &export->exp_obd->u.lov;
- for (i = 0; i < md->lmd_stripe_count; i++) {
- /* create data objects with "parent" OA */
+ for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
+ /* create data objects with "parent" OA */
memcpy(&tmp, oa, sizeof(tmp));
- tmp.o_id = md->lmd_oinfo[i].loi_id;
- rc = obd_destroy(&lov->tgts[i].conn, &tmp, NULL);
- if (!rc) {
- CERROR("Error destroying object %Ld on %d\n",
- tmp.o_id, i);
- }
+ tmp.o_id = loi->loi_id;
+ rc = obd_destroy(&lov->tgts[loi->loi_ost_idx].conn, &tmp, NULL);
+ if (rc)
+ CERROR("Error destroying objid "LPX64" subobj "LPX64
+ " on OST idx %d\n: rc = %d",
+ oa->o_id, loi->loi_id, loi->loi_ost_idx, rc);
}
RETURN(rc);
}
static int lov_getattr(struct lustre_handle *conn, struct obdo *oa,
- struct lov_stripe_md *md)
+ struct lov_stripe_md *lsm)
{
- int rc = 0, i;
struct obdo tmp;
struct obd_export *export = class_conn2export(conn);
struct lov_obd *lov;
+ struct lov_oinfo *loi;
+ int rc = 0, i;
int set = 0;
ENTRY;
- if (!md) {
- CERROR("LOV requires striping ea for destruction\n");
+ if (!lsm) {
+ CERROR("LOV requires striping ea\n");
+ RETURN(-EINVAL);
+ }
+
+ if (lsm->lsm_magic != LOV_MAGIC) {
+ CERROR("LOV striping magic bad %#lx != %#lx\n",
+ lsm->lsm_magic, LOV_MAGIC);
RETURN(-EINVAL);
}
lov = &export->exp_obd->u.lov;
oa->o_size = 0;
oa->o_blocks = 0;
- for (i = 0; i < md->lmd_stripe_count; i++) {
+ for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
int err;
- if (md->lmd_oinfo[i].loi_id == 0)
+ if (loi->loi_id == 0)
continue;
/* create data objects with "parent" OA */
memcpy(&tmp, oa, sizeof(tmp));
- tmp.o_id = md->lmd_oinfo[i].loi_id;
+ tmp.o_id = loi->loi_id;
- err = obd_getattr(&lov->tgts[i].conn, &tmp, NULL);
+ err = obd_getattr(&lov->tgts[loi->loi_ost_idx].conn, &tmp,NULL);
if (err) {
- CERROR("Error getattr object %Ld on %d: err = %d\n",
- tmp.o_id, i, err);
+ CERROR("Error getattr objid "LPX64" subobj "LPX64
+ " on OST idx %d: rc = %d\n",
+ oa->o_id, loi->loi_id, loi->loi_ost_idx, err);
if (!rc)
rc = err;
continue; /* XXX or break? */
obdo_cpy_md(oa, &tmp, tmp.o_valid);
set = 1;
} else {
+#warning FIXME: the size needs to be fixed for sparse files
if (tmp.o_valid & OBD_MD_FLSIZE)
oa->o_size += tmp.o_size;
if (tmp.o_valid & OBD_MD_FLBLOCKS)
RETURN(rc);
}
-static int lov_setattr(struct lustre_handle *conn, struct obdo *oa,
- struct lov_stripe_md *md)
+static int lov_setattr(struct lustre_handle *conn, struct obdo *oa,
+ struct lov_stripe_md *lsm)
{
int rc = 0, i;
struct obdo tmp;
struct obd_export *export = class_conn2export(conn);
struct lov_obd *lov;
+ struct lov_oinfo *loi;
ENTRY;
- if (!md) {
- CERROR("LOV requires striping ea for desctruction\n");
- RETURN(-EINVAL);
+ if (!lsm) {
+ CERROR("LOV requires striping ea\n");
+ RETURN(-EINVAL);
}
- if (!export || !export->exp_obd)
- RETURN(-ENODEV);
+ if (lsm->lsm_magic != LOV_MAGIC) {
+ CERROR("LOV striping magic bad %#lx != %#lx\n",
+ lsm->lsm_magic, LOV_MAGIC);
+ RETURN(-EINVAL);
+ }
+
+ if (!export || !export->exp_obd)
+ RETURN(-ENODEV);
+
+ if (oa->o_valid & OBD_MD_FLSIZE)
+ CERROR("setting size on an LOV object is totally broken\n");
lov = &export->exp_obd->u.lov;
- for (i = 0; i < md->lmd_stripe_count; i++) {
- /* create data objects with "parent" OA */
+ for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
+ int err;
+
+ /* create data objects with "parent" OA */
memcpy(&tmp, oa, sizeof(tmp));
- tmp.o_id = md->lmd_oinfo[i].loi_id;
+ tmp.o_id = loi->loi_id;
- rc = obd_setattr(&lov->tgts[i].conn, &tmp, NULL);
- if (!rc) {
- CERROR("Error setattr object %Ld on %d\n",
- tmp.o_id, i);
+ err = obd_setattr(&lov->tgts[loi->loi_ost_idx].conn, &tmp,NULL);
+ if (err) {
+ CERROR("Error setattr objid "LPX64" subobj "LPX64
+ " on OST idx %d: rc = %d\n",
+ oa->o_id, loi->loi_id, loi->loi_ost_idx, err);
+ if (!rc)
+ rc = err;
}
}
RETURN(rc);
}
-static int lov_open(struct lustre_handle *conn, struct obdo *oa,
- struct lov_stripe_md *md)
+static int lov_open(struct lustre_handle *conn, struct obdo *oa,
+ struct lov_stripe_md *lsm)
{
- int rc = 0, rc2 = 0, i;
struct obdo tmp;
struct obd_export *export = class_conn2export(conn);
struct lov_obd *lov;
+ struct lov_oinfo *loi;
+ int rc = 0, i;
ENTRY;
- if (!md) {
- CERROR("LOV requires striping ea for opening\n");
- RETURN(-EINVAL);
+ if (!lsm) {
+ CERROR("LOV requires striping ea for opening\n");
+ RETURN(-EINVAL);
+ }
+
+ if (lsm->lsm_magic != LOV_MAGIC) {
+ CERROR("LOV striping magic bad %#lx != %#lx\n",
+ lsm->lsm_magic, LOV_MAGIC);
+ RETURN(-EINVAL);
}
- if (!export || !export->exp_obd)
- RETURN(-ENODEV);
+ if (!export || !export->exp_obd)
+ RETURN(-ENODEV);
lov = &export->exp_obd->u.lov;
- for (i = 0; i < md->lmd_stripe_count; i++) {
- /* create data objects with "parent" OA */
+ for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
+ int err;
+
+ /* create data objects with "parent" OA */
memcpy(&tmp, oa, sizeof(tmp));
- tmp.o_id = md->lmd_oinfo[i].loi_id;
+ tmp.o_id = loi->loi_id;
- rc = obd_open(&lov->tgts[i].conn, &tmp, NULL);
- if (rc) {
- rc2 = rc;
- CERROR("Error open object %Ld on %d\n",
- tmp.o_id, i);
+ err = obd_open(&lov->tgts[loi->loi_ost_idx].conn, &tmp, NULL);
+ if (err) {
+ CERROR("Error open objid "LPX64" subobj "LPX64
+ " on OST idx %d: rc = %d\n",
+ oa->o_id, lsm->lsm_oinfo[i].loi_id,
+ loi->loi_ost_idx, rc);
+ if (!rc)
+ rc = err;
}
}
- RETURN(rc2);
+ /* FIXME: returning an error, but having opened some objects is a bad
+ * idea, since they will likely never be closed. We either
+ * need to not return an error if _some_ objects could be
+ * opened, and leave it to read/write to return -EIO (with
+ * hopefully partial error status) or close all opened objects
+ * and return an error.
+ */
+ RETURN(rc);
}
-
-static int lov_close(struct lustre_handle *conn, struct obdo *oa,
- struct lov_stripe_md *md)
+static int lov_close(struct lustre_handle *conn, struct obdo *oa,
+ struct lov_stripe_md *lsm)
{
- int rc = 0, i;
struct obdo tmp;
struct obd_export *export = class_conn2export(conn);
struct lov_obd *lov;
+ struct lov_oinfo *loi;
+ int rc = 0, i;
ENTRY;
- if (!md) {
- CERROR("LOV requires striping ea for desctruction\n");
- RETURN(-EINVAL);
+ if (!lsm) {
+ CERROR("LOV requires striping ea\n");
+ RETURN(-EINVAL);
}
- if (!export || !export->exp_obd)
- RETURN(-ENODEV);
+ if (lsm->lsm_magic != LOV_MAGIC) {
+ CERROR("LOV striping magic bad %#lx != %#lx\n",
+ lsm->lsm_magic, LOV_MAGIC);
+ RETURN(-EINVAL);
+ }
+
+ if (!export || !export->exp_obd)
+ RETURN(-ENODEV);
lov = &export->exp_obd->u.lov;
- for (i = 0; i < md->lmd_stripe_count; i++) {
- /* create data objects with "parent" OA */
+ for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
+ int err;
+
+ /* create data objects with "parent" OA */
memcpy(&tmp, oa, sizeof(tmp));
- tmp.o_id = md->lmd_oinfo[i].loi_id;
+ tmp.o_id = loi->loi_id;
- rc = obd_close(&lov->tgts[i].conn, &tmp, NULL);
- if (rc) {
- CERROR("Error close object %Ld on %d\n",
- tmp.o_id, i);
+ err = obd_close(&lov->tgts[loi->loi_ost_idx].conn, &tmp, NULL);
+ if (err) {
+ CERROR("Error close objid "LPX64" subobj "LPX64
+ " on OST idx %d: rc = %d\n",
+ oa->o_id, loi->loi_id, loi->loi_ost_idx, err);
+ if (!rc)
+ rc = err;
}
}
RETURN(rc);
#define log2(n) ffz(~(n))
#endif
-/* compute offset in stripe i corresponding to offset "in" */
-__u64 lov_offset(struct lov_stripe_md *md, __u64 in, int i)
-{
- __u32 ssz = md->lmd_stripe_size;
- /* full stripes across all * stripe size */
- __u32 out = ( ((__u32)in) / (md->lmd_stripe_count * ssz)) * ssz;
- __u32 off = (__u32)in % (md->lmd_stripe_count * ssz);
-
- if ( in == 0xffffffffffffffff ) {
- return 0xffffffffffffffff;
- }
-
- if ( (i+1) * ssz <= off )
- out += (i+1) * ssz;
- else if ( i * ssz > off )
- out += 0;
- else
- out += (off - (i * ssz)) % ssz;
-
- return (__u64) out;
-}
+#warning FIXME: merge these two functions now that they are nearly the same
-/* compute offset in stripe i corresponding to offset "in" */
-__u64 lov_stripe(struct lov_stripe_md *md, __u64 in, int *j)
+/* compute ost offset in stripe "stripeno" corresponding to offset "lov_off" */
+static __u64 lov_offset(struct lov_stripe_md *lsm, __u64 lov_off, int stripeno)
{
- __u32 ssz = md->lmd_stripe_size;
- __u32 off, out;
- /* full stripes across all * stripe size */
- *j = (((__u32) in)/ssz) % md->lmd_stripe_count;
- off = (__u32)in % (md->lmd_stripe_count * ssz);
- out = ( ((__u32)in) / (md->lmd_stripe_count * ssz)) * ssz +
- (off - ((*j) * ssz)) % ssz;;
-
- return (__u64) out;
+ unsigned long ssize = lsm->lsm_stripe_size;
+ unsigned long swidth = ssize * lsm->lsm_stripe_count;
+ unsigned long stripe_off;
+
+ if (lov_off == OBD_PUNCH_EOF)
+ return OBD_PUNCH_EOF;
+
+ /* do_div(a, b) returns a % b, and a = a / b */
+ stripe_off = do_div(lov_off, swidth);
+
+ if (stripe_off < stripeno * ssize)
+ stripe_off = 0;
+ else
+ stripe_off -= stripeno * ssize;
+
+ return lov_off * ssize + stripe_off;
}
-int lov_stripe_which(struct lov_stripe_md *md, __u64 in)
+/* compute which stripe offset "lov_off" will be written into */
+static int lov_stripe_which(struct lov_stripe_md *lsm, __u64 lov_off)
{
- __u32 ssz = md->lmd_stripe_size;
- int j;
- j = (((__u32) in)/ssz) % md->lmd_stripe_count;
- return j;
+ unsigned long ssize = lsm->lsm_stripe_size;
+ unsigned long swidth = ssize * lsm->lsm_stripe_count;
+ unsigned long stripe_off;
+
+ stripe_off = do_div(lov_off, swidth);
+
+ return stripe_off / ssize;
}
* we can send this 'punch' to just the authoritative node and the nodes
* that the punch will affect. */
static int lov_punch(struct lustre_handle *conn, struct obdo *oa,
- struct lov_stripe_md *md,
+ struct lov_stripe_md *lsm,
obd_off start, obd_off end)
{
- int rc = 0, i;
struct obdo tmp;
struct obd_export *export = class_conn2export(conn);
struct lov_obd *lov;
+ struct lov_oinfo *loi;
+ int rc = 0, i;
ENTRY;
- if (!md) {
- CERROR("LOV requires striping ea for desctruction\n");
- RETURN(-EINVAL);
+ if (!lsm) {
+ CERROR("LOV requires striping ea\n");
+ RETURN(-EINVAL);
}
- if (!export || !export->exp_obd)
- RETURN(-ENODEV);
+ if (lsm->lsm_magic != LOV_MAGIC) {
+ CERROR("LOV striping magic bad %#lx != %#lx\n",
+ lsm->lsm_magic, LOV_MAGIC);
+ RETURN(-EINVAL);
+ }
+
+ if (!export || !export->exp_obd)
+ RETURN(-ENODEV);
lov = &export->exp_obd->u.lov;
- for (i = 0; i < md->lmd_stripe_count; i++) {
- __u64 starti = lov_offset(md, start, i);
- __u64 endi = lov_offset(md, end, i);
-
+ for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
+ __u64 starti = lov_offset(lsm, start, i);
+ __u64 endi = lov_offset(lsm, end, i);
+ int err;
+
if (starti == endi)
continue;
- /* create data objects with "parent" OA */
+ /* create data objects with "parent" OA */
memcpy(&tmp, oa, sizeof(tmp));
- tmp.o_id = md->lmd_oinfo[i].loi_id;
+ tmp.o_id = loi->loi_id;
- rc = obd_punch(&lov->tgts[i].conn, &tmp, NULL,
+ err = obd_punch(&lov->tgts[loi->loi_ost_idx].conn, &tmp, NULL,
starti, endi);
- if (!rc) {
- CERROR("Error punch object %Ld on %d\n",
- tmp.o_id, i);
+ if (err) {
+ CERROR("Error punch objid "LPX64" subobj "LPX64
+ " on OST idx %d: rc = %d\n",
+ oa->o_id, loi->loi_id, loi->loi_ost_idx, err);
+ if (!rc)
+ rc = err;
}
}
RETURN(rc);
}
-int lov_osc_brw_callback(struct io_cb_data *cbd, int err, int phase)
+static int lov_osc_brw_callback(struct io_cb_data *cbd, int err, int phase)
{
int ret = 0;
- ENTRY;
+ ENTRY;
if (phase == CB_PHASE_START)
RETURN(0);
- if (phase == CB_PHASE_FINISH) {
- if (err)
+ if (phase == CB_PHASE_FINISH) {
+ if (err)
cbd->err = err;
if (atomic_dec_and_test(&cbd->refcount))
- ret = cbd->cb(cbd, cbd->err, phase);
+ ret = cbd->cb(cbd->data, cbd->err, phase);
RETURN(ret);
}
return 0;
}
-static inline int lov_brw(int cmd, struct lustre_handle *conn,
- struct lov_stripe_md *md,
- obd_count oa_bufs,
+static inline int lov_brw(int cmd, struct lustre_handle *conn,
+ struct lov_stripe_md *lsm, obd_count oa_bufs,
struct brw_page *pga,
brw_callback_t callback, struct io_cb_data *cbd)
{
- int stripe_count = md->lmd_stripe_count;
+ int stripe_count = lsm->lsm_stripe_count;
struct obd_export *export = class_conn2export(conn);
struct lov_obd *lov;
- struct {
+ struct {
int bufct;
int index;
int subcount;
- struct lov_stripe_md md;
- } *stripeinfo;
+ struct lov_stripe_md lsm;
+ int ost_idx;
+ } *stripeinfo, *si, *si_last;
struct brw_page *ioarr;
int rc, i;
+ struct io_cb_data *our_cb;
+ struct lov_oinfo *loi;
+ int *where;
ENTRY;
+ if (!lsm) {
+ CERROR("LOV requires striping ea\n");
+ RETURN(-EINVAL);
+ }
+
+ if (lsm->lsm_magic != LOV_MAGIC) {
+ CERROR("LOV striping magic bad %#lx != %#lx\n",
+ lsm->lsm_magic, LOV_MAGIC);
+ RETURN(-EINVAL);
+ }
+
lov = &export->exp_obd->u.lov;
+ our_cb = ll_init_cb();
+ if (!our_cb)
+ RETURN(-ENOMEM);
+
+ OBD_ALLOC(stripeinfo, stripe_count * sizeof(*stripeinfo));
+ if (!stripeinfo)
+ GOTO(out_cbdata, rc = -ENOMEM);
- OBD_ALLOC(stripeinfo, stripe_count * sizeof(*stripeinfo));
- if (!stripeinfo)
- RETURN(-ENOMEM);
+ OBD_ALLOC(where, sizeof(*where) * oa_bufs);
+ if (!where)
+ GOTO(out_sinfo, rc = -ENOMEM);
OBD_ALLOC(ioarr, sizeof(*ioarr) * oa_bufs);
- if (!ioarr) {
- OBD_FREE(stripeinfo, stripe_count * sizeof(*stripeinfo));
- RETURN(-ENOMEM);
- }
+ if (!ioarr)
+ GOTO(out_where, rc = -ENOMEM);
+
+ /* This is the only race-free way I can think of to get the refcount
+ * correct. -phil */
+ atomic_set(&our_cb->refcount, 0);
+ our_cb->cb = callback;
+ our_cb->data = cbd;
- for (i=0 ; i < oa_bufs ; i++ ) {
- int which;
- which = lov_stripe_which(md, pga[i].pg->index * PAGE_SIZE);
- stripeinfo[which].bufct++;
+ for (i = 0; i < oa_bufs; i++) {
+ where[i] = lov_stripe_which(lsm, pga[i].off);
+ if (stripeinfo[where[i]].bufct++ == 0)
+ atomic_inc(&our_cb->refcount);
}
- for (i=0 ; i < stripe_count ; i++) {
- if (i>0)
- stripeinfo[i].index =
- stripeinfo[i-1].index + stripeinfo[i-1].bufct;
- stripeinfo[i].md.lmd_object_id =
- md->lmd_oinfo[i].loi_id;
+ for (i = 0, loi = lsm->lsm_oinfo, si_last = si = stripeinfo;
+ i < stripe_count; i++, loi++, si_last = si, si++) {
+ if (i > 0)
+ si->index = si_last->index + si_last->bufct;
+ si->lsm.lsm_object_id = loi->loi_id;
+ si->ost_idx = loi->loi_ost_idx;
}
- for (i=0 ; i < oa_bufs ; i++ ) {
- int which, shift;
- which = lov_stripe_which(md, pga[i].pg->index * PAGE_SIZE);
+ for (i = 0; i < oa_bufs; i++) {
+ int which = where[i];
+ int shift;
- shift = stripeinfo[which].index;
- ioarr[shift + stripeinfo[which].subcount] = pga[i];
- ioarr[shift + stripeinfo[which].subcount].off =
- lov_offset(md, pga[i].pg->index * PAGE_SIZE, which);
+ shift = stripeinfo[which].index + stripeinfo[which].subcount;
+ LASSERT(shift < oa_bufs);
+ ioarr[shift] = pga[i];
+ ioarr[shift].off = lov_offset(lsm, pga[i].off, which);
stripeinfo[which].subcount++;
}
-
- cbd->cb = callback;
- atomic_set(&cbd->refcount, oa_bufs);
- for (i=0 ; i < stripe_count ; i++) {
- int shift = stripeinfo[i].index;
- if (stripeinfo[i].bufct)
- obd_brw(cmd, &lov->tgts[i].conn, &stripeinfo[i].md,
- stripeinfo[i].bufct, &ioarr[shift],
- lov_osc_brw_callback, cbd);
+
+ for (i = 0, si = stripeinfo; i < stripe_count; i++, si++) {
+ int shift = si->index;
+
+ if (si->bufct) {
+ LASSERT(shift < oa_bufs);
+ obd_brw(cmd, &lov->tgts[si->ost_idx].conn,
+ &si->lsm, si->bufct, &ioarr[shift],
+ lov_osc_brw_callback, our_cb);
+ }
}
rc = callback(cbd, 0, CB_PHASE_START);
+ OBD_FREE(ioarr, sizeof(*ioarr) * oa_bufs);
+ out_where:
+ OBD_FREE(where, sizeof(*where) * oa_bufs);
+ out_sinfo:
+ OBD_FREE(stripeinfo, stripe_count * sizeof(*stripeinfo));
+ out_cbdata:
+ OBD_FREE(our_cb, sizeof(*our_cb));
RETURN(rc);
}
-static int lov_enqueue(struct lustre_handle *conn, struct lov_stripe_md *md,
- struct lustre_handle *parent_lock,
+static int lov_enqueue(struct lustre_handle *conn, struct lov_stripe_md *lsm,
+ struct lustre_handle *parent_lock,
__u32 type, void *cookie, int cookielen, __u32 mode,
int *flags, void *cb, void *data, int datalen,
struct lustre_handle *lockhs)
{
- int rc = 0, i;
struct obd_export *export = class_conn2export(conn);
struct lov_obd *lov;
- struct lov_stripe_md submd;
+ struct lov_oinfo *loi;
+ int rc = 0, i;
ENTRY;
- if (!md) {
- CERROR("LOV requires striping ea for desctruction\n");
- RETURN(-EINVAL);
+ if (!lsm) {
+ CERROR("LOV requires striping ea\n");
+ RETURN(-EINVAL);
+ }
+
+ if (lsm->lsm_magic != LOV_MAGIC) {
+ CERROR("LOV striping magic bad %#lx != %#lx\n",
+ lsm->lsm_magic, LOV_MAGIC);
+ RETURN(-EINVAL);
}
- if (!export || !export->exp_obd)
- RETURN(-ENODEV);
+ if (!export || !export->exp_obd)
+ RETURN(-ENODEV);
lov = &export->exp_obd->u.lov;
- for (i = 0; i < md->lmd_stripe_count; i++) {
+ for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
struct ldlm_extent *extent = (struct ldlm_extent *)cookie;
struct ldlm_extent sub_ext;
+ struct lov_stripe_md submd;
- sub_ext.start = lov_offset(md, extent->start, i);
- sub_ext.end = lov_offset(md, extent->end, i);
- if ( sub_ext.start == sub_ext.end )
+ sub_ext.start = lov_offset(lsm, extent->start, i);
+ sub_ext.end = lov_offset(lsm, extent->end, i);
+ if (sub_ext.start == sub_ext.end)
continue;
- submd.lmd_object_id = md->lmd_oinfo[i].loi_id;
- submd.lmd_easize = sizeof(struct lov_mds_md);
- submd.lmd_stripe_count = md->lmd_stripe_count;
+ submd.lsm_object_id = loi->loi_id;
+ /* XXX submd lsm_mds_easize should be that from the subobj,
+ * and the subobj should get it opaquely from the LOV.
+ */
+ submd.lsm_mds_easize = lov_mds_md_size(lsm->lsm_ost_count);
+ submd.lsm_stripe_count = 0;
/* XXX submd is not fully initialized here */
- rc = obd_enqueue(&(lov->tgts[i].conn), &submd, parent_lock,
- type, &sub_ext, sizeof(sub_ext), mode,
- flags, cb, data, datalen, &(lockhs[i]));
+ rc = obd_enqueue(&(lov->tgts[loi->loi_ost_idx].conn), &submd,
+ parent_lock, type, &sub_ext, sizeof(sub_ext),
+ mode, flags, cb, data, datalen, &(lockhs[i]));
// XXX add a lock debug statement here
- if (rc) {
- CERROR("Error obd_enqueue object %Ld subobj %Ld\n",
- md->lmd_object_id, md->lmd_oinfo[i].loi_id);
- }
+ if (rc)
+ CERROR("Error enqueue objid "LPX64" subobj "LPX64
+ " on OST idx %d: rc = %d\n", lsm->lsm_object_id,
+ loi->loi_id, loi->loi_ost_idx, rc);
}
RETURN(rc);
}
-static int lov_cancel(struct lustre_handle *conn, struct lov_stripe_md *md,
+static int lov_cancel(struct lustre_handle *conn, struct lov_stripe_md *lsm,
__u32 mode, struct lustre_handle *lockhs)
{
- int rc = 0, i;
struct obd_export *export = class_conn2export(conn);
struct lov_obd *lov;
+ struct lov_oinfo *loi;
+ int rc = 0, i;
ENTRY;
- if (!md) {
- CERROR("LOV requires striping ea for lock cancellation\n");
- RETURN(-EINVAL);
+ if (!lsm) {
+ CERROR("LOV requires striping ea\n");
+ RETURN(-EINVAL);
+ }
+
+ if (lsm->lsm_magic != LOV_MAGIC) {
+ CERROR("LOV striping magic bad %#lx != %#lx\n",
+ lsm->lsm_magic, LOV_MAGIC);
+ RETURN(-EINVAL);
}
- if (!export || !export->exp_obd)
- RETURN(-ENODEV);
+ if (!export || !export->exp_obd)
+ RETURN(-ENODEV);
lov = &export->exp_obd->u.lov;
- for (i = 0; i < md->lmd_stripe_count; i++) {
+ for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
struct lov_stripe_md submd;
- if ( lockhs[i].addr == 0 )
+ if (lockhs[i].addr == 0)
continue;
- submd.lmd_object_id = md->lmd_oinfo[i].loi_id;
- submd.lmd_easize = sizeof(struct lov_mds_md);
- rc = obd_cancel(&lov->tgts[i].conn, &submd, mode, &lockhs[i]);
- if (rc) {
- CERROR("Error cancel object %Ld subobj %Ld\n",
- md->lmd_object_id, md->lmd_oinfo[i].loi_id);
- }
+ submd.lsm_object_id = loi->loi_id;
+ submd.lsm_mds_easize = lov_mds_md_size(lsm->lsm_ost_count);
+ submd.lsm_stripe_count = 0;
+ rc = obd_cancel(&lov->tgts[loi->loi_ost_idx].conn, &submd,
+ mode, &lockhs[i]);
+ if (rc)
+ CERROR("Error cancel objid "LPX64" subobj "LPX64
+ " on OST idx %d: rc = %d\n", lsm->lsm_object_id,
+ loi->loi_id, loi->loi_ost_idx, rc);
+ }
+ RETURN(rc);
+}
+
+static int lov_cancel_unused(struct lustre_handle *conn,
+ struct lov_stripe_md *lsm)
+{
+ struct obd_export *export = class_conn2export(conn);
+ struct lov_obd *lov;
+ struct lov_oinfo *loi;
+ int rc = 0, i;
+ ENTRY;
+
+ if (!lsm) {
+ CERROR("LOV requires striping ea for lock cancellation\n");
+ RETURN(-EINVAL);
+ }
+
+ if (!export || !export->exp_obd)
+ RETURN(-ENODEV);
+
+ lov = &export->exp_obd->u.lov;
+ for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
+ struct lov_stripe_md submd;
+
+ submd.lsm_object_id = loi->loi_id;
+ submd.lsm_mds_easize = lov_mds_md_size(lsm->lsm_ost_count);
+ submd.lsm_stripe_count = 0;
+ rc = obd_cancel_unused(&lov->tgts[loi->loi_ost_idx].conn,
+ &submd);
+ if (rc)
+ CERROR("Error cancel unused objid "LPX64" subobj "LPX64
+ " on OST idx %d: rc = %d\n", lsm->lsm_object_id,
+ loi->loi_id, loi->loi_ost_idx, rc);
}
RETURN(rc);
}
-static int lov_statfs(struct lustre_handle *conn, struct statfs *sfs)
+static int lov_statfs(struct lustre_handle *conn, struct obd_statfs *osfs)
{
struct obd_export *export = class_conn2export(conn);
struct lov_obd *lov;
- struct statfs lov_sfs;
+ struct obd_statfs lov_sfs;
int set = 0;
int rc = 0;
int i;
err = obd_statfs(&lov->tgts[i].conn, &lov_sfs);
if (err) {
- CERROR("Error statfs OSC %s on %d: err = %d\n",
+ CERROR("Error statfs OSC %s idx %d: err = %d\n",
lov->tgts[i].uuid, i, err);
if (!rc)
rc = err;
continue; /* XXX or break? - probably OK to continue */
}
if (!set) {
- memcpy(sfs, &lov_sfs, sizeof(lov_sfs));
+ memcpy(osfs, &lov_sfs, sizeof(lov_sfs));
set = 1;
} else {
- sfs->f_bfree += lov_sfs.f_bfree;
- sfs->f_bavail += lov_sfs.f_bavail;
- sfs->f_blocks += lov_sfs.f_blocks;
+ osfs->os_bfree += lov_sfs.os_bfree;
+ osfs->os_bavail += lov_sfs.os_bavail;
+ osfs->os_blocks += lov_sfs.os_blocks;
/* XXX not sure about this one - depends on policy.
* - could be minimum if we always stripe on all OBDs
* (but that would be wrong for any other policy,
o_brw: lov_brw,
o_punch: lov_punch,
o_enqueue: lov_enqueue,
- o_cancel: lov_cancel
+ o_cancel: lov_cancel,
+ o_cancel_unused: lov_cancel_unused
};
git://git.whamcloud.com / fs / lustre-release.git / blobdiff