On 2011-10-04 06:36, Boaz Harrosh wrote: > For Ease of reviewing I split the move to ore into 3 parts > move to ore 01: ore_layout & ore_components > move to ore 02: move to ORE > move to ore 03: Remove old raid engine > > This patch modifies the objio_lseg, layout-segment level > and devices and components arrays to use the ORE types. > > Though it will be removed soon, also the raid engine > is modified to actually compile, possibly run, with > the new types. So it is the same old raid engine but > with some new ORE types. > > For Ease of reviewing, some of the old code is > "#if 0" but is not removed so the diff command works > better. The old code will be removed in the 3rd patch. > > Signed-off-by: Boaz Harrosh <bharrosh@xxxxxxxxxxx> Acked-by: Benny Halevy <bhalevy@xxxxxxxxxx> Thanks! > --- > fs/nfs/objlayout/objio_osd.c | 272 ++++++++++++++++++++---------------------- > 1 files changed, 128 insertions(+), 144 deletions(-) > > diff --git a/fs/nfs/objlayout/objio_osd.c b/fs/nfs/objlayout/objio_osd.c > index 2347e0a..bd7ec26 100644 > --- a/fs/nfs/objlayout/objio_osd.c > +++ b/fs/nfs/objlayout/objio_osd.c > @@ -38,7 +38,7 @@ > */ > > #include <linux/module.h> > -#include <scsi/osd_initiator.h> > +#include <scsi/osd_ore.h> > > #include "objlayout.h" > > @@ -52,7 +52,7 @@ enum { BIO_MAX_PAGES_KMALLOC = > > struct objio_dev_ent { > struct nfs4_deviceid_node id_node; > - struct osd_dev *od; > + struct ore_dev od; > }; > > static void > @@ -60,8 +60,8 @@ objio_free_deviceid_node(struct nfs4_deviceid_node *d) > { > struct objio_dev_ent *de = container_of(d, struct objio_dev_ent, id_node); > > - dprintk("%s: free od=%p\n", __func__, de->od); > - osduld_put_device(de->od); > + dprintk("%s: free od=%p\n", __func__, de->od.od); > + osduld_put_device(de->od.od); > kfree(de); > } > > @@ -98,12 +98,12 @@ _dev_list_add(const struct nfs_server *nfss, > nfss->pnfs_curr_ld, > nfss->nfs_client, > d_id); > - de->od = od; > + de->od.od = od; > > d = nfs4_insert_deviceid_node(&de->id_node); > n = container_of(d, struct objio_dev_ent, id_node); > if (n != de) { > - dprintk("%s: Race with other n->od=%p\n", __func__, n->od); > + dprintk("%s: Race with other n->od=%p\n", __func__, n->od.od); > objio_free_deviceid_node(&de->id_node); > de = n; > } > @@ -111,28 +111,11 @@ _dev_list_add(const struct nfs_server *nfss, > return de; > } > > -struct caps_buffers { > - u8 caps_key[OSD_CRYPTO_KEYID_SIZE]; > - u8 creds[OSD_CAP_LEN]; > -}; > - > struct objio_segment { > struct pnfs_layout_segment lseg; > > - struct pnfs_osd_object_cred *comps; > - > - unsigned mirrors_p1; > - unsigned stripe_unit; > - unsigned group_width; /* Data stripe_units without integrity comps */ > - u64 group_depth; > - unsigned group_count; > - > - unsigned max_io_size; > - > - unsigned comps_index; > - unsigned num_comps; > - /* variable length */ > - struct objio_dev_ent *ods[]; > + struct ore_layout layout; > + struct ore_components oc; > }; > > static inline struct objio_segment * > @@ -155,7 +138,8 @@ struct objio_state { > loff_t offset; > bool sync; > > - struct objio_segment *layout; > + struct ore_layout *layout; > + struct ore_components *oc; > > struct kref kref; > objio_done_fn done; > @@ -175,32 +159,33 @@ struct objio_state { > > /* Send and wait for a get_device_info of devices in the layout, > then look them up with the osd_initiator library */ > -static struct objio_dev_ent *_device_lookup(struct pnfs_layout_hdr *pnfslay, > - struct objio_segment *objio_seg, unsigned comp, > - gfp_t gfp_flags) > +static int objio_devices_lookup(struct pnfs_layout_hdr *pnfslay, > + struct objio_segment *objio_seg, unsigned c, struct nfs4_deviceid *d_id, > + gfp_t gfp_flags) > { > struct pnfs_osd_deviceaddr *deviceaddr; > - struct nfs4_deviceid *d_id; > struct objio_dev_ent *ode; > struct osd_dev *od; > struct osd_dev_info odi; > int err; > > - d_id = &objio_seg->comps[comp].oc_object_id.oid_device_id; > - > ode = _dev_list_find(NFS_SERVER(pnfslay->plh_inode), d_id); > - if (ode) > - return ode; > + if (ode) { > + objio_seg->oc.ods[c] = &ode->od; /* must use container_of */ > + return 0; > + } > > err = objlayout_get_deviceinfo(pnfslay, d_id, &deviceaddr, gfp_flags); > if (unlikely(err)) { > dprintk("%s: objlayout_get_deviceinfo dev(%llx:%llx) =>%d\n", > __func__, _DEVID_LO(d_id), _DEVID_HI(d_id), err); > - return ERR_PTR(err); > + return err; > } > > odi.systemid_len = deviceaddr->oda_systemid.len; > if (odi.systemid_len > sizeof(odi.systemid)) { > + dprintk("%s: odi.systemid_len > sizeof(systemid=%zd)\n", > + __func__, sizeof(odi.systemid)); > err = -EINVAL; > goto out; > } else if (odi.systemid_len) > @@ -225,38 +210,15 @@ static struct objio_dev_ent *_device_lookup(struct pnfs_layout_hdr *pnfslay, > > ode = _dev_list_add(NFS_SERVER(pnfslay->plh_inode), d_id, od, > gfp_flags); > - > + objio_seg->oc.ods[c] = &ode->od; /* must use container_of */ > + dprintk("Adding new dev_id(%llx:%llx)\n", > + _DEVID_LO(d_id), _DEVID_HI(d_id)); > out: > - dprintk("%s: return=%d\n", __func__, err); > objlayout_put_deviceinfo(deviceaddr); > - return err ? ERR_PTR(err) : ode; > -} > - > -static int objio_devices_lookup(struct pnfs_layout_hdr *pnfslay, > - struct objio_segment *objio_seg, > - gfp_t gfp_flags) > -{ > - unsigned i; > - int err; > - > - /* lookup all devices */ > - for (i = 0; i < objio_seg->num_comps; i++) { > - struct objio_dev_ent *ode; > - > - ode = _device_lookup(pnfslay, objio_seg, i, gfp_flags); > - if (unlikely(IS_ERR(ode))) { > - err = PTR_ERR(ode); > - goto out; > - } > - objio_seg->ods[i] = ode; > - } > - err = 0; > - > -out: > - dprintk("%s: return=%d\n", __func__, err); > return err; > } > > +#if 0 > static int _verify_data_map(struct pnfs_osd_layout *layout) > { > struct pnfs_osd_data_map *data_map = &layout->olo_map; > @@ -296,23 +258,45 @@ static int _verify_data_map(struct pnfs_osd_layout *layout) > > return 0; > } > +#endif > > -static void copy_single_comp(struct pnfs_osd_object_cred *cur_comp, > - struct pnfs_osd_object_cred *src_comp, > - struct caps_buffers *caps_p) > +static void copy_single_comp(struct ore_components *oc, unsigned c, > + struct pnfs_osd_object_cred *src_comp) > { > - WARN_ON(src_comp->oc_cap_key.cred_len > sizeof(caps_p->caps_key)); > - WARN_ON(src_comp->oc_cap.cred_len > sizeof(caps_p->creds)); > + struct ore_comp *ocomp = &oc->comps[c]; > > - *cur_comp = *src_comp; > + WARN_ON(src_comp->oc_cap_key.cred_len > 0); /* libosd is NO_SEC only */ > + WARN_ON(src_comp->oc_cap.cred_len > sizeof(ocomp->cred)); > > - memcpy(caps_p->caps_key, src_comp->oc_cap_key.cred, > - sizeof(caps_p->caps_key)); > - cur_comp->oc_cap_key.cred = caps_p->caps_key; > + ocomp->obj.partition = src_comp->oc_object_id.oid_partition_id; > + ocomp->obj.id = src_comp->oc_object_id.oid_object_id; > > - memcpy(caps_p->creds, src_comp->oc_cap.cred, > - sizeof(caps_p->creds)); > - cur_comp->oc_cap.cred = caps_p->creds; > + memcpy(ocomp->cred, src_comp->oc_cap.cred, sizeof(ocomp->cred)); > +} > + > +int __alloc_objio_seg(unsigned numdevs, gfp_t gfp_flags, > + struct objio_segment **pseg) > +{ > + struct __alloc_objio_segment { > + struct objio_segment olseg; > + struct ore_dev *ods[numdevs]; > + struct ore_comp comps[numdevs]; > + } *aolseg; > + > + aolseg = kzalloc(sizeof(*aolseg), gfp_flags); > + if (unlikely(!aolseg)) { > + dprintk("%s: Faild allocation numdevs=%d size=%zd\n", __func__, > + numdevs, sizeof(*aolseg)); > + return -ENOMEM; > + } > + > + aolseg->olseg.oc.numdevs = numdevs; > + aolseg->olseg.oc.single_comp = EC_MULTPLE_COMPS; > + aolseg->olseg.oc.comps = aolseg->comps; > + aolseg->olseg.oc.ods = aolseg->ods; > + > + *pseg = &aolseg->olseg; > + return 0; > } > > int objio_alloc_lseg(struct pnfs_layout_segment **outp, > @@ -324,59 +308,43 @@ int objio_alloc_lseg(struct pnfs_layout_segment **outp, > struct objio_segment *objio_seg; > struct pnfs_osd_xdr_decode_layout_iter iter; > struct pnfs_osd_layout layout; > - struct pnfs_osd_object_cred *cur_comp, src_comp; > - struct caps_buffers *caps_p; > + struct pnfs_osd_object_cred src_comp; > + unsigned cur_comp; > int err; > > err = pnfs_osd_xdr_decode_layout_map(&layout, &iter, xdr); > if (unlikely(err)) > return err; > > - err = _verify_data_map(&layout); > + err = __alloc_objio_seg(layout.olo_num_comps, gfp_flags, &objio_seg); > if (unlikely(err)) > return err; > > - objio_seg = kzalloc(sizeof(*objio_seg) + > - sizeof(objio_seg->ods[0]) * layout.olo_num_comps + > - sizeof(*objio_seg->comps) * layout.olo_num_comps + > - sizeof(struct caps_buffers) * layout.olo_num_comps, > - gfp_flags); > - if (!objio_seg) > - return -ENOMEM; > + objio_seg->layout.stripe_unit = layout.olo_map.odm_stripe_unit; > + objio_seg->layout.group_width = layout.olo_map.odm_group_width; > + objio_seg->layout.group_depth = layout.olo_map.odm_group_depth; > + objio_seg->layout.mirrors_p1 = layout.olo_map.odm_mirror_cnt + 1; > + objio_seg->layout.raid_algorithm = layout.olo_map.odm_raid_algorithm; > > - objio_seg->comps = (void *)(objio_seg->ods + layout.olo_num_comps); > - cur_comp = objio_seg->comps; > - caps_p = (void *)(cur_comp + layout.olo_num_comps); > - while (pnfs_osd_xdr_decode_layout_comp(&src_comp, &iter, xdr, &err)) > - copy_single_comp(cur_comp++, &src_comp, caps_p++); > + err = ore_verify_layout(layout.olo_map.odm_num_comps, > + &objio_seg->layout); > if (unlikely(err)) > goto err; > > - objio_seg->num_comps = layout.olo_num_comps; > - objio_seg->comps_index = layout.olo_comps_index; > - err = objio_devices_lookup(pnfslay, objio_seg, gfp_flags); > - if (err) > - goto err; > - > - objio_seg->mirrors_p1 = layout.olo_map.odm_mirror_cnt + 1; > - objio_seg->stripe_unit = layout.olo_map.odm_stripe_unit; > - if (layout.olo_map.odm_group_width) { > - objio_seg->group_width = layout.olo_map.odm_group_width; > - objio_seg->group_depth = layout.olo_map.odm_group_depth; > - objio_seg->group_count = layout.olo_map.odm_num_comps / > - objio_seg->mirrors_p1 / > - objio_seg->group_width; > - } else { > - objio_seg->group_width = layout.olo_map.odm_num_comps / > - objio_seg->mirrors_p1; > - objio_seg->group_depth = -1; > - objio_seg->group_count = 1; > + objio_seg->oc.first_dev = layout.olo_comps_index; > + cur_comp = 0; > + while (pnfs_osd_xdr_decode_layout_comp(&src_comp, &iter, xdr, &err)) { > + copy_single_comp(&objio_seg->oc, cur_comp, &src_comp); > + err = objio_devices_lookup(pnfslay, objio_seg, cur_comp, > + &src_comp.oc_object_id.oid_device_id, > + gfp_flags); > + if (err) > + goto err; > + ++cur_comp; > } > - > - /* Cache this calculation it will hit for every page */ > - objio_seg->max_io_size = (BIO_MAX_PAGES_KMALLOC * PAGE_SIZE - > - objio_seg->stripe_unit) * > - objio_seg->group_width; > + /* pnfs_osd_xdr_decode_layout_comp returns false on error */ > + if (unlikely(err)) > + goto err; > > *outp = &objio_seg->lseg; > return 0; > @@ -393,10 +361,14 @@ void objio_free_lseg(struct pnfs_layout_segment *lseg) > int i; > struct objio_segment *objio_seg = OBJIO_LSEG(lseg); > > - for (i = 0; i < objio_seg->num_comps; i++) { > - if (!objio_seg->ods[i]) > + for (i = 0; i < objio_seg->oc.numdevs; i++) { > + struct ore_dev *od = objio_seg->oc.ods[i]; > + struct objio_dev_ent *ode; > + > + if (!od) > break; > - nfs4_put_deviceid_node(&objio_seg->ods[i]->id_node); > + ode = container_of(od, typeof(*ode), od); > + nfs4_put_deviceid_node(&ode->id_node); > } > kfree(objio_seg); > } > @@ -411,8 +383,8 @@ objio_alloc_io_state(struct pnfs_layout_hdr *pnfs_layout_type, > struct objio_state *ios; > struct __alloc_objio_state { > struct objio_state objios; > - struct _objio_per_comp per_dev[objio_seg->num_comps]; > - struct pnfs_osd_ioerr ioerrs[objio_seg->num_comps]; > + struct _objio_per_comp per_dev[objio_seg->oc.numdevs]; > + struct pnfs_osd_ioerr ioerrs[objio_seg->oc.numdevs]; > } *aos; > > aos = kzalloc(sizeof(*aos), gfp_flags); > @@ -421,8 +393,9 @@ objio_alloc_io_state(struct pnfs_layout_hdr *pnfs_layout_type, > > ios = &aos->objios; > > - ios->layout = objio_seg; > - objlayout_init_ioerrs(&aos->objios.oir, objio_seg->num_comps, > + ios->layout = &objio_seg->layout; > + ios->oc = &objio_seg->oc; > + objlayout_init_ioerrs(&aos->objios.oir, objio_seg->oc.numdevs, > aos->ioerrs, rpcdata, pnfs_layout_type); > > ios->pages = pages; > @@ -474,6 +447,27 @@ enum pnfs_osd_errno osd_pri_2_pnfs_err(enum osd_err_priority oep) > } > } > > +static void __on_dev_error(struct objio_state *ios, bool is_write, > + struct ore_dev *od, unsigned dev_index, enum osd_err_priority oep, > + u64 dev_offset, u64 dev_len) > +{ > + struct objio_state *objios = ios->private; > + struct pnfs_osd_objid pooid; > + struct objio_dev_ent *ode = container_of(od, typeof(*ode), od); > + /* FIXME: what to do with more-then-one-group layouts. We need to > + * translate from ore_io_state index to oc->comps index > + */ > + unsigned comp = dev_index; > + > + pooid.oid_device_id = ode->id_node.deviceid; > + pooid.oid_partition_id = ios->oc->comps[comp].obj.partition; > + pooid.oid_object_id = ios->oc->comps[comp].obj.id; > + > + objlayout_io_set_result(&objios->oir, comp, > + &pooid, osd_pri_2_pnfs_err(oep), > + dev_offset, dev_len, is_write); > +} > + > static void _clear_bio(struct bio *bio) > { > struct bio_vec *bv; > @@ -518,12 +512,9 @@ static int _io_check(struct objio_state *ios, bool is_write) > > continue; /* we recovered */ > } > - objlayout_io_set_result(&ios->oir, i, > - &ios->layout->comps[i].oc_object_id, > - osd_pri_2_pnfs_err(osi.osd_err_pri), > - ios->per_dev[i].offset, > - ios->per_dev[i].length, > - is_write); > + __on_dev_error(ios, is_write, ios->oc->ods[i], > + ios->per_dev[i].dev, osi.osd_err_pri, > + ios->per_dev[i].offset, ios->per_dev[i].length); > > if (osi.osd_err_pri >= oep) { > oep = osi.osd_err_pri; > @@ -558,11 +549,11 @@ static void _io_free(struct objio_state *ios) > > struct osd_dev *_io_od(struct objio_state *ios, unsigned dev) > { > - unsigned min_dev = ios->layout->comps_index; > - unsigned max_dev = min_dev + ios->layout->num_comps; > + unsigned min_dev = ios->oc->first_dev; > + unsigned max_dev = min_dev + ios->oc->numdevs; > > BUG_ON(dev < min_dev || max_dev <= dev); > - return ios->layout->ods[dev - min_dev]->od; > + return ios->oc->ods[dev - min_dev]->od; > } > > struct _striping_info { > @@ -820,12 +811,9 @@ static int _read_mirrors(struct objio_state *ios, unsigned cur_comp) > struct osd_request *or = NULL; > struct _objio_per_comp *per_dev = &ios->per_dev[cur_comp]; > unsigned dev = per_dev->dev; > - struct pnfs_osd_object_cred *cred = > - &ios->layout->comps[cur_comp]; > - struct osd_obj_id obj = { > - .partition = cred->oc_object_id.oid_partition_id, > - .id = cred->oc_object_id.oid_object_id, > - }; > + struct ore_comp *cred = > + &ios->oc->comps[cur_comp]; > + struct osd_obj_id obj = cred->obj; > int ret; > > or = osd_start_request(_io_od(ios, dev), GFP_KERNEL); > @@ -837,7 +825,7 @@ static int _read_mirrors(struct objio_state *ios, unsigned cur_comp) > > osd_req_read(or, &obj, per_dev->offset, per_dev->bio, per_dev->length); > > - ret = osd_finalize_request(or, 0, cred->oc_cap.cred, NULL); > + ret = osd_finalize_request(or, 0, cred->cred, NULL); > if (ret) { > dprintk("%s: Faild to osd_finalize_request() => %d\n", > __func__, ret); > @@ -924,12 +912,8 @@ static int _write_mirrors(struct objio_state *ios, unsigned cur_comp) > > for (; cur_comp < last_comp; ++cur_comp, ++dev) { > struct osd_request *or = NULL; > - struct pnfs_osd_object_cred *cred = > - &ios->layout->comps[cur_comp]; > - struct osd_obj_id obj = { > - .partition = cred->oc_object_id.oid_partition_id, > - .id = cred->oc_object_id.oid_object_id, > - }; > + struct ore_comp *cred = &ios->oc->comps[cur_comp]; > + struct osd_obj_id obj = cred->obj; > struct _objio_per_comp *per_dev = &ios->per_dev[cur_comp]; > struct bio *bio; > > @@ -964,7 +948,7 @@ static int _write_mirrors(struct objio_state *ios, unsigned cur_comp) > > osd_req_write(or, &obj, per_dev->offset, bio, per_dev->length); > > - ret = osd_finalize_request(or, 0, cred->oc_cap.cred, NULL); > + ret = osd_finalize_request(or, 0, cred->cred, NULL); > if (ret) { > dprintk("%s: Faild to osd_finalize_request() => %d\n", > __func__, ret); > @@ -1030,7 +1014,7 @@ static bool objio_pg_test(struct nfs_pageio_descriptor *pgio, > return false; > > return pgio->pg_count + req->wb_bytes <= > - OBJIO_LSEG(pgio->pg_lseg)->max_io_size; > + OBJIO_LSEG(pgio->pg_lseg)->layout.max_io_length; > } > > static const struct nfs_pageio_ops objio_pg_read_ops = { -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html