diff options
Diffstat (limited to 'fs/nfs/flexfilelayout/flexfilelayout.c')
| -rw-r--r-- | fs/nfs/flexfilelayout/flexfilelayout.c | 225 |
1 files changed, 166 insertions, 59 deletions
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index 63abe705f4ca..f9264e1922a2 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -410,7 +410,7 @@ ff_layout_alloc_lseg(struct pnfs_layout_hdr *lh, for (i = 0; i < fls->mirror_array_cnt; i++) { struct nfs4_ff_layout_mirror *mirror; struct cred *kcred; - const struct cred *cred; + const struct cred __rcu *cred; kuid_t uid; kgid_t gid; u32 ds_count, fh_count, id; @@ -501,7 +501,7 @@ ff_layout_alloc_lseg(struct pnfs_layout_hdr *lh, goto out_err_free; kcred->fsuid = uid; kcred->fsgid = gid; - cred = kcred; + cred = RCU_INITIALIZER(kcred); if (lgr->range.iomode == IOMODE_READ) rcu_assign_pointer(fls->mirror_array[i]->ro_cred, cred); @@ -788,30 +788,82 @@ ff_layout_alloc_commit_info(struct pnfs_layout_segment *lseg, } } +static void +ff_layout_mark_ds_unreachable(struct pnfs_layout_segment *lseg, int idx) +{ + struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx); + + if (devid) + nfs4_mark_deviceid_unavailable(devid); +} + +static void +ff_layout_mark_ds_reachable(struct pnfs_layout_segment *lseg, int idx) +{ + struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx); + + if (devid) + nfs4_mark_deviceid_available(devid); +} + static struct nfs4_pnfs_ds * -ff_layout_choose_best_ds_for_read(struct pnfs_layout_segment *lseg, - int start_idx, - int *best_idx) +ff_layout_choose_ds_for_read(struct pnfs_layout_segment *lseg, + int start_idx, int *best_idx, + bool check_device) { struct nfs4_ff_layout_segment *fls = FF_LAYOUT_LSEG(lseg); + struct nfs4_ff_layout_mirror *mirror; struct nfs4_pnfs_ds *ds; bool fail_return = false; int idx; - /* mirrors are sorted by efficiency */ + /* mirrors are initially sorted by efficiency */ for (idx = start_idx; idx < fls->mirror_array_cnt; idx++) { if (idx+1 == fls->mirror_array_cnt) - fail_return = true; - ds = nfs4_ff_layout_prepare_ds(lseg, idx, fail_return); - if (ds) { - *best_idx = idx; - return ds; - } + fail_return = !check_device; + + mirror = FF_LAYOUT_COMP(lseg, idx); + ds = nfs4_ff_layout_prepare_ds(lseg, mirror, fail_return); + if (!ds) + continue; + + if (check_device && + nfs4_test_deviceid_unavailable(&mirror->mirror_ds->id_node)) + continue; + + *best_idx = idx; + return ds; } return NULL; } +static struct nfs4_pnfs_ds * +ff_layout_choose_any_ds_for_read(struct pnfs_layout_segment *lseg, + int start_idx, int *best_idx) +{ + return ff_layout_choose_ds_for_read(lseg, start_idx, best_idx, false); +} + +static struct nfs4_pnfs_ds * +ff_layout_choose_valid_ds_for_read(struct pnfs_layout_segment *lseg, + int start_idx, int *best_idx) +{ + return ff_layout_choose_ds_for_read(lseg, start_idx, best_idx, true); +} + +static struct nfs4_pnfs_ds * +ff_layout_choose_best_ds_for_read(struct pnfs_layout_segment *lseg, + int start_idx, int *best_idx) +{ + struct nfs4_pnfs_ds *ds; + + ds = ff_layout_choose_valid_ds_for_read(lseg, start_idx, best_idx); + if (ds) + return ds; + return ff_layout_choose_any_ds_for_read(lseg, start_idx, best_idx); +} + static void ff_layout_pg_get_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *req, @@ -925,7 +977,8 @@ retry: goto out_mds; for (i = 0; i < pgio->pg_mirror_count; i++) { - ds = nfs4_ff_layout_prepare_ds(pgio->pg_lseg, i, true); + mirror = FF_LAYOUT_COMP(pgio->pg_lseg, i); + ds = nfs4_ff_layout_prepare_ds(pgio->pg_lseg, mirror, true); if (!ds) { if (!ff_layout_no_fallback_to_mds(pgio->pg_lseg)) goto out_mds; @@ -936,7 +989,6 @@ retry: goto retry; } pgm = &pgio->pg_mirrors[i]; - mirror = FF_LAYOUT_COMP(pgio->pg_lseg, i); pgm->pg_bsize = mirror->mirror_ds->ds_versions[0].wsize; } @@ -1071,6 +1123,8 @@ static int ff_layout_async_handle_error_v4(struct rpc_task *task, break; case -NFS4ERR_RETRY_UNCACHED_REP: break; + case -EAGAIN: + return -NFS4ERR_RESET_TO_PNFS; /* Invalidate Layout errors */ case -NFS4ERR_PNFS_NO_LAYOUT: case -ESTALE: /* mapped NFS4ERR_STALE */ @@ -1131,6 +1185,7 @@ static int ff_layout_async_handle_error_v3(struct rpc_task *task, case -EBADHANDLE: case -ELOOP: case -ENOSPC: + case -EAGAIN: break; case -EJUKEBOX: nfs_inc_stats(lseg->pls_layout->plh_inode, NFSIOS_DELAY); @@ -1158,8 +1213,10 @@ static int ff_layout_async_handle_error(struct rpc_task *task, { int vers = clp->cl_nfs_mod->rpc_vers->number; - if (task->tk_status >= 0) + if (task->tk_status >= 0) { + ff_layout_mark_ds_reachable(lseg, idx); return 0; + } /* Handle the case of an invalid layout segment */ if (!pnfs_is_valid_lseg(lseg)) @@ -1222,6 +1279,8 @@ static void ff_layout_io_track_ds_error(struct pnfs_layout_segment *lseg, err = ff_layout_track_ds_error(FF_LAYOUT_FROM_HDR(lseg->pls_layout), mirror, offset, length, status, opnum, GFP_NOIO); + if (status == NFS4ERR_NXIO) + ff_layout_mark_ds_unreachable(lseg, idx); pnfs_error_mark_layout_for_return(lseg->pls_layout->plh_inode, lseg); dprintk("%s: err %d op %d status %u\n", __func__, err, opnum, status); } @@ -1249,7 +1308,7 @@ static int ff_layout_read_done_cb(struct rpc_task *task, if (ff_layout_choose_best_ds_for_read(hdr->lseg, hdr->pgio_mirror_idx + 1, &hdr->pgio_mirror_idx)) - goto out_eagain; + goto out_layouterror; set_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags); return task->tk_status; case -NFS4ERR_RESET_TO_MDS: @@ -1260,6 +1319,8 @@ static int ff_layout_read_done_cb(struct rpc_task *task, } return 0; +out_layouterror: + ff_layout_send_layouterror(hdr->lseg); out_eagain: rpc_restart_call_prepare(task); return -EAGAIN; @@ -1293,15 +1354,6 @@ ff_layout_set_layoutcommit(struct inode *inode, (unsigned long long) NFS_I(inode)->layout->plh_lwb); } -static bool -ff_layout_device_unavailable(struct pnfs_layout_segment *lseg, int idx) -{ - /* No mirroring for now */ - struct nfs4_deviceid_node *node = FF_LAYOUT_DEVID_NODE(lseg, idx); - - return ff_layout_test_devid_unavailable(node); -} - static void ff_layout_read_record_layoutstats_start(struct rpc_task *task, struct nfs_pgio_header *hdr) { @@ -1332,10 +1384,6 @@ static int ff_layout_read_prepare_common(struct rpc_task *task, rpc_exit(task, -EIO); return -EIO; } - if (ff_layout_device_unavailable(hdr->lseg, hdr->pgio_mirror_idx)) { - rpc_exit(task, -EHOSTDOWN); - return -EAGAIN; - } ff_layout_read_record_layoutstats_start(task, hdr); return 0; @@ -1369,6 +1417,16 @@ static void ff_layout_read_prepare_v4(struct rpc_task *task, void *data) ff_layout_read_prepare_common(task, hdr); } +static void +ff_layout_io_prepare_transmit(struct rpc_task *task, + void *data) +{ + struct nfs_pgio_header *hdr = data; + + if (!pnfs_is_valid_lseg(hdr->lseg)) + rpc_exit(task, -EAGAIN); +} + static void ff_layout_read_call_done(struct rpc_task *task, void *data) { struct nfs_pgio_header *hdr = data; @@ -1399,9 +1457,10 @@ static void ff_layout_read_release(void *data) struct nfs_pgio_header *hdr = data; ff_layout_read_record_layoutstats_done(&hdr->task, hdr); - if (test_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags)) + if (test_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags)) { + ff_layout_send_layouterror(hdr->lseg); pnfs_read_resend_pnfs(hdr); - else if (test_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags)) + } else if (test_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags)) ff_layout_reset_read(hdr); pnfs_generic_rw_release(data); } @@ -1513,11 +1572,6 @@ static int ff_layout_write_prepare_common(struct rpc_task *task, return -EIO; } - if (ff_layout_device_unavailable(hdr->lseg, hdr->pgio_mirror_idx)) { - rpc_exit(task, -EHOSTDOWN); - return -EAGAIN; - } - ff_layout_write_record_layoutstats_start(task, hdr); return 0; } @@ -1573,9 +1627,10 @@ static void ff_layout_write_release(void *data) struct nfs_pgio_header *hdr = data; ff_layout_write_record_layoutstats_done(&hdr->task, hdr); - if (test_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags)) + if (test_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags)) { + ff_layout_send_layouterror(hdr->lseg); ff_layout_reset_write(hdr, true); - else if (test_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags)) + } else if (test_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags)) ff_layout_reset_write(hdr, false); pnfs_generic_rw_release(data); } @@ -1657,6 +1712,7 @@ static void ff_layout_commit_release(void *data) static const struct rpc_call_ops ff_layout_read_call_ops_v3 = { .rpc_call_prepare = ff_layout_read_prepare_v3, + .rpc_call_prepare_transmit = ff_layout_io_prepare_transmit, .rpc_call_done = ff_layout_read_call_done, .rpc_count_stats = ff_layout_read_count_stats, .rpc_release = ff_layout_read_release, @@ -1664,6 +1720,7 @@ static const struct rpc_call_ops ff_layout_read_call_ops_v3 = { static const struct rpc_call_ops ff_layout_read_call_ops_v4 = { .rpc_call_prepare = ff_layout_read_prepare_v4, + .rpc_call_prepare_transmit = ff_layout_io_prepare_transmit, .rpc_call_done = ff_layout_read_call_done, .rpc_count_stats = ff_layout_read_count_stats, .rpc_release = ff_layout_read_release, @@ -1671,6 +1728,7 @@ static const struct rpc_call_ops ff_layout_read_call_ops_v4 = { static const struct rpc_call_ops ff_layout_write_call_ops_v3 = { .rpc_call_prepare = ff_layout_write_prepare_v3, + .rpc_call_prepare_transmit = ff_layout_io_prepare_transmit, .rpc_call_done = ff_layout_write_call_done, .rpc_count_stats = ff_layout_write_count_stats, .rpc_release = ff_layout_write_release, @@ -1678,6 +1736,7 @@ static const struct rpc_call_ops ff_layout_write_call_ops_v3 = { static const struct rpc_call_ops ff_layout_write_call_ops_v4 = { .rpc_call_prepare = ff_layout_write_prepare_v4, + .rpc_call_prepare_transmit = ff_layout_io_prepare_transmit, .rpc_call_done = ff_layout_write_call_done, .rpc_count_stats = ff_layout_write_count_stats, .rpc_release = ff_layout_write_release, @@ -1703,6 +1762,7 @@ ff_layout_read_pagelist(struct nfs_pgio_header *hdr) struct pnfs_layout_segment *lseg = hdr->lseg; struct nfs4_pnfs_ds *ds; struct rpc_clnt *ds_clnt; + struct nfs4_ff_layout_mirror *mirror; const struct cred *ds_cred; loff_t offset = hdr->args.offset; u32 idx = hdr->pgio_mirror_idx; @@ -1713,20 +1773,21 @@ ff_layout_read_pagelist(struct nfs_pgio_header *hdr) __func__, hdr->inode->i_ino, hdr->args.pgbase, (size_t)hdr->args.count, offset); - ds = nfs4_ff_layout_prepare_ds(lseg, idx, false); + mirror = FF_LAYOUT_COMP(lseg, idx); + ds = nfs4_ff_layout_prepare_ds(lseg, mirror, false); if (!ds) goto out_failed; - ds_clnt = nfs4_ff_find_or_create_ds_client(lseg, idx, ds->ds_clp, + ds_clnt = nfs4_ff_find_or_create_ds_client(mirror, ds->ds_clp, hdr->inode); if (IS_ERR(ds_clnt)) goto out_failed; - ds_cred = ff_layout_get_ds_cred(lseg, idx, hdr->cred); + ds_cred = ff_layout_get_ds_cred(mirror, &lseg->pls_range, hdr->cred); if (!ds_cred) goto out_failed; - vers = nfs4_ff_layout_ds_version(lseg, idx); + vers = nfs4_ff_layout_ds_version(mirror); dprintk("%s USE DS: %s cl_count %d vers %d\n", __func__, ds->ds_remotestr, refcount_read(&ds->ds_clp->cl_count), vers); @@ -1734,13 +1795,11 @@ ff_layout_read_pagelist(struct nfs_pgio_header *hdr) hdr->pgio_done_cb = ff_layout_read_done_cb; refcount_inc(&ds->ds_clp->cl_count); hdr->ds_clp = ds->ds_clp; - fh = nfs4_ff_layout_select_ds_fh(lseg, idx); + fh = nfs4_ff_layout_select_ds_fh(mirror); if (fh) hdr->args.fh = fh; - if (vers == 4 && - !nfs4_ff_layout_select_ds_stateid(lseg, idx, &hdr->args.stateid)) - goto out_failed; + nfs4_ff_layout_select_ds_stateid(mirror, &hdr->args.stateid); /* * Note that if we ever decide to split across DSes, @@ -1770,26 +1829,28 @@ ff_layout_write_pagelist(struct nfs_pgio_header *hdr, int sync) struct pnfs_layout_segment *lseg = hdr->lseg; struct nfs4_pnfs_ds *ds; struct rpc_clnt *ds_clnt; + struct nfs4_ff_layout_mirror *mirror; const struct cred *ds_cred; loff_t offset = hdr->args.offset; int vers; struct nfs_fh *fh; int idx = hdr->pgio_mirror_idx; - ds = nfs4_ff_layout_prepare_ds(lseg, idx, true); + mirror = FF_LAYOUT_COMP(lseg, idx); + ds = nfs4_ff_layout_prepare_ds(lseg, mirror, true); if (!ds) goto out_failed; - ds_clnt = nfs4_ff_find_or_create_ds_client(lseg, idx, ds->ds_clp, + ds_clnt = nfs4_ff_find_or_create_ds_client(mirror, ds->ds_clp, hdr->inode); if (IS_ERR(ds_clnt)) goto out_failed; - ds_cred = ff_layout_get_ds_cred(lseg, idx, hdr->cred); + ds_cred = ff_layout_get_ds_cred(mirror, &lseg->pls_range, hdr->cred); if (!ds_cred) goto out_failed; - vers = nfs4_ff_layout_ds_version(lseg, idx); + vers = nfs4_ff_layout_ds_version(mirror); dprintk("%s ino %lu sync %d req %zu@%llu DS: %s cl_count %d vers %d\n", __func__, hdr->inode->i_ino, sync, (size_t) hdr->args.count, @@ -1800,13 +1861,11 @@ ff_layout_write_pagelist(struct nfs_pgio_header *hdr, int sync) refcount_inc(&ds->ds_clp->cl_count); hdr->ds_clp = ds->ds_clp; hdr->ds_commit_idx = idx; - fh = nfs4_ff_layout_select_ds_fh(lseg, idx); + fh = nfs4_ff_layout_select_ds_fh(mirror); if (fh) hdr->args.fh = fh; - if (vers == 4 && - !nfs4_ff_layout_select_ds_stateid(lseg, idx, &hdr->args.stateid)) - goto out_failed; + nfs4_ff_layout_select_ds_stateid(mirror, &hdr->args.stateid); /* * Note that if we ever decide to split across DSes, @@ -1849,6 +1908,7 @@ static int ff_layout_initiate_commit(struct nfs_commit_data *data, int how) struct pnfs_layout_segment *lseg = data->lseg; struct nfs4_pnfs_ds *ds; struct rpc_clnt *ds_clnt; + struct nfs4_ff_layout_mirror *mirror; const struct cred *ds_cred; u32 idx; int vers, ret; @@ -1859,20 +1919,21 @@ static int ff_layout_initiate_commit(struct nfs_commit_data *data, int how) goto out_err; idx = calc_ds_index_from_commit(lseg, data->ds_commit_index); - ds = nfs4_ff_layout_prepare_ds(lseg, idx, true); + mirror = FF_LAYOUT_COMP(lseg, idx); + ds = nfs4_ff_layout_prepare_ds(lseg, mirror, true); if (!ds) goto out_err; - ds_clnt = nfs4_ff_find_or_create_ds_client(lseg, idx, ds->ds_clp, + ds_clnt = nfs4_ff_find_or_create_ds_client(mirror, ds->ds_clp, data->inode); if (IS_ERR(ds_clnt)) goto out_err; - ds_cred = ff_layout_get_ds_cred(lseg, idx, data->cred); + ds_cred = ff_layout_get_ds_cred(mirror, &lseg->pls_range, data->cred); if (!ds_cred) goto out_err; - vers = nfs4_ff_layout_ds_version(lseg, idx); + vers = nfs4_ff_layout_ds_version(mirror); dprintk("%s ino %lu, how %d cl_count %d vers %d\n", __func__, data->inode->i_ino, how, refcount_read(&ds->ds_clp->cl_count), @@ -2036,7 +2097,7 @@ ff_layout_encode_layoutreturn(struct xdr_stream *xdr, dprintk("%s: Begin\n", __func__); - xdr_init_encode(&tmp_xdr, &tmp_buf, NULL); + xdr_init_encode(&tmp_xdr, &tmp_buf, NULL, NULL); ff_layout_encode_ioerr(&tmp_xdr, args, ff_args); ff_layout_encode_iostats_array(&tmp_xdr, args, ff_args); @@ -2102,6 +2163,52 @@ out_nomem: return -ENOMEM; } +#ifdef CONFIG_NFS_V4_2 +void +ff_layout_send_layouterror(struct pnfs_layout_segment *lseg) +{ + struct pnfs_layout_hdr *lo = lseg->pls_layout; + struct nfs42_layout_error *errors; + LIST_HEAD(head); + + if (!nfs_server_capable(lo->plh_inode, NFS_CAP_LAYOUTERROR)) + return; + ff_layout_fetch_ds_ioerr(lo, &lseg->pls_range, &head, -1); + if (list_empty(&head)) + return; + + errors = kmalloc_array(NFS42_LAYOUTERROR_MAX, + sizeof(*errors), GFP_NOFS); + if (errors != NULL) { + const struct nfs4_ff_layout_ds_err *pos; + size_t n = 0; + + list_for_each_entry(pos, &head, list) { + errors[n].offset = pos->offset; + errors[n].length = pos->length; + nfs4_stateid_copy(&errors[n].stateid, &pos->stateid); + errors[n].errors[0].dev_id = pos->deviceid; + errors[n].errors[0].status = pos->status; + errors[n].errors[0].opnum = pos->opnum; + n++; + if (!list_is_last(&pos->list, &head) && + n < NFS42_LAYOUTERROR_MAX) + continue; + if (nfs42_proc_layouterror(lseg, errors, n) < 0) + break; + n = 0; + } + kfree(errors); + } + ff_layout_free_ds_ioerr(&head); +} +#else +void +ff_layout_send_layouterror(struct pnfs_layout_segment *lseg) +{ +} +#endif + static int ff_layout_ntop4(const struct sockaddr *sap, char *buf, const size_t buflen) { |