/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * Copyright (C) 2001-2003 Cluster File Systems, Inc. * * This file is part of the Lustre file system, http://www.lustre.org * Lustre is a trademark of Cluster File Systems, Inc. * * You may have signed or agreed to another license before downloading * this software. If so, you are bound by the terms and conditions * of that agreement, and the following does not apply to you. See the * LICENSE file included with this distribution for more information. * * If you did not agree to a different license, then this copy of Lustre * is open source software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * In either case, Lustre is distributed in the hope that it will be * useful, but WITHOUT ANY WARRANTY; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * license text for more details. */ #ifndef EXPORT_SYMTAB # define EXPORT_SYMTAB #endif #define DEBUG_SUBSYSTEM S_MDC #ifdef __KERNEL__ # include # include # include # include #else # include #endif #include #include #include #include #include #include #include #include "mdc_internal.h" static quota_interface_t *quota_interface; #define REQUEST_MINOR 244 static quota_interface_t *quota_interface; extern quota_interface_t mdc_quota_interface; static int mdc_cleanup(struct obd_device *obd); static struct obd_capa *mdc_unpack_capa(struct ptlrpc_request *req, unsigned int offset) { struct lustre_capa *capa; struct obd_capa *oc; /* swabbed already in mdc_enqueue */ capa = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*capa)); if (capa == NULL) { CERROR("missing capa at offset %d failed!\n", offset); return ERR_PTR(-EFAULT); } oc = alloc_capa(CAPA_SITE_CLIENT); if (!oc) { CERROR("alloc capa failed!\n"); return ERR_PTR(-ENOMEM); } oc->c_capa = *capa; return oc; } /* Helper that implements most of mdc_getstatus and signal_completed_replay. */ /* XXX this should become mdc_get_info("key"), sending MDS_GET_INFO RPC */ static int send_getstatus(struct obd_import *imp, struct lu_fid *rootfid, struct obd_capa **pc, int level, int msg_flags) { struct ptlrpc_request *req; struct mdt_body *body; int rc, size[3] = { sizeof(struct ptlrpc_body), sizeof(*body), sizeof(struct lustre_capa) }; ENTRY; req = ptlrpc_prep_req(imp, LUSTRE_MDS_VERSION, MDS_GETSTATUS, 2, size, NULL); if (!req) GOTO(out, rc = -ENOMEM); req->rq_send_state = level; ptlrpc_req_set_repsize(req, 3, size); mdc_pack_req_body(req, REQ_REC_OFF, 0, NULL, NULL, 0, 0); lustre_msg_add_flags(req->rq_reqmsg, msg_flags); rc = ptlrpc_queue_wait(req); if (!rc) { body = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*body), lustre_swab_mdt_body); if (body == NULL) { CERROR ("Can't extract mdt_body\n"); GOTO (out, rc = -EPROTO); } *rootfid = body->fid1; if (body->valid & OBD_MD_FLMDSCAPA) { struct obd_capa *oc; oc = mdc_unpack_capa(req, REPLY_REC_OFF + 1); if (IS_ERR(oc)) GOTO(out, rc = PTR_ERR(oc)); *pc = oc; } CDEBUG(D_NET, "root fid="DFID", last_committed="LPU64 ", last_xid="LPU64"\n", PFID(rootfid), lustre_msg_get_last_committed(req->rq_repmsg), lustre_msg_get_last_xid(req->rq_repmsg)); } EXIT; out: ptlrpc_req_finished(req); return rc; } /* This should be mdc_get_info("rootfid") */ int mdc_getstatus(struct obd_export *exp, struct lu_fid *rootfid, struct obd_capa **pc) { return send_getstatus(class_exp2cliimp(exp), rootfid, pc, LUSTRE_IMP_FULL, 0); } /* * This function now is known to always saying that it will receive 4 buffers * from server. Even for cases when acl_size and md_size is zero, RPC header * willcontain 4 fields and RPC itself will contain zero size fields. This is * because mdt_getattr*() _always_ returns 4 fields, but if acl is not needed * and thus zero, it shirinks it, making zero size. The same story about * md_size. And this is course of problem when client waits for smaller number * of fields. This issue will be fixed later when client gets awar of RPC * layouts. --umka */ static int mdc_getattr_common(struct obd_export *exp, unsigned int ea_size, unsigned int acl_size, int mdscapa, struct ptlrpc_request *req) { struct mdt_body *body; void *eadata; int size[5] = { sizeof(struct ptlrpc_body), sizeof(*body), ea_size, acl_size, sizeof(struct lustre_capa) }; int offset, rc; ENTRY; /* Request message already built. */ if (ea_size) CDEBUG(D_INODE, "reserved %u bytes for MD/symlink in packet\n", ea_size); if (acl_size) CDEBUG(D_INODE, "reserved %u bytes for ACL\n", acl_size); ptlrpc_req_set_repsize(req, 5, size); rc = ptlrpc_queue_wait(req); if (rc != 0) RETURN (rc); body = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*body), lustre_swab_mdt_body); if (body == NULL) { CERROR ("Can't unpack mdt_body\n"); RETURN (-EPROTO); } CDEBUG(D_NET, "mode: %o\n", body->mode); offset = REPLY_REC_OFF + 1; LASSERT_REPSWAB(req, offset); if (body->eadatasize != 0) { /* reply indicates presence of eadata; check it's there... */ eadata = lustre_msg_buf(req->rq_repmsg, offset++, body->eadatasize); if (eadata == NULL) { CERROR ("Missing/short eadata\n"); RETURN (-EPROTO); } } if (body->valid & OBD_MD_FLMODEASIZE) { struct client_obd *cli = &exp->exp_obd->u.cli; if (cli->cl_max_mds_easize < body->max_mdsize) cli->cl_max_mds_easize = body->max_mdsize; if (cli->cl_max_mds_cookiesize < body->max_cookiesize) cli->cl_max_mds_cookiesize = body->max_cookiesize; } offset += !!body->aclsize; if (body->valid & OBD_MD_FLMDSCAPA) { struct lustre_capa *capa; LASSERT(mdscapa); capa = lustre_unpack_capa(req->rq_repmsg, offset++); if (capa == NULL) { CERROR("Missing/short client MDS capability\n"); RETURN(-EPROTO); } } RETURN (0); } int mdc_getattr(struct obd_export *exp, const struct lu_fid *fid, struct obd_capa *oc, obd_valid valid, int ea_size, struct ptlrpc_request **request) { struct ptlrpc_request *req; int size[3] = { sizeof(struct ptlrpc_body), sizeof(struct mdt_body) }; int acl_size = 0, rc; ENTRY; size[REQ_REC_OFF + 1] = oc ? sizeof(struct lustre_capa) : 0; /* * XXX: Do we need to make another request here? We just did a getattr * to do the lookup in the first place. */ req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION, MDS_GETATTR, 3, size, NULL); if (!req) GOTO(out, rc = -ENOMEM); mdc_pack_req_body(req, REQ_REC_OFF, valid, fid, oc, ea_size, MDS_BFLAG_EXT_FLAGS/*request "new" flags(bug 9486)*/); if (valid & OBD_MD_FLRMTPERM) acl_size = sizeof(struct mdt_remote_perm); /* Currently only root inode will call us with FLACL */ else if (valid & OBD_MD_FLACL) acl_size = LUSTRE_POSIX_ACL_MAX_SIZE; rc = mdc_getattr_common(exp, ea_size, acl_size, !!(valid & OBD_MD_FLMDSCAPA), req); if (rc != 0) { ptlrpc_req_finished (req); req = NULL; } out: *request = req; RETURN (rc); } int mdc_getattr_name(struct obd_export *exp, const struct lu_fid *fid, struct obd_capa *oc, const char *filename, int namelen, obd_valid valid, int ea_size, struct ptlrpc_request **request) { struct ptlrpc_request *req; struct mdt_body *body; int size[4] = { sizeof(struct ptlrpc_body), sizeof(*body), 0, namelen}; int rc; ENTRY; size[REQ_REC_OFF + 1] = oc ? sizeof(struct lustre_capa) : 0; req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION, MDS_GETATTR_NAME, 4, size, NULL); if (!req) GOTO(out, rc = -ENOMEM); mdc_pack_req_body(req, REQ_REC_OFF, valid, fid, oc, ea_size, MDS_BFLAG_EXT_FLAGS/*request "new" flags(bug 9486)*/); if (filename) { LASSERT(strnlen(filename, namelen) == namelen - 1); memcpy(lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 2, namelen), filename, namelen); } rc = mdc_getattr_common(exp, ea_size, 0, !!(valid & OBD_MD_FLMDSCAPA), req); if (rc != 0) { ptlrpc_req_finished (req); req = NULL; } out: *request = req; RETURN(rc); } static int mdc_is_subdir(struct obd_export *exp, const struct lu_fid *pfid, const struct lu_fid *cfid, struct ptlrpc_request **request) { int size[2] = { sizeof(struct ptlrpc_body), sizeof(struct mdt_body) }; struct ptlrpc_request *req; struct mdt_body *body; int rc; ENTRY; req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION, MDS_IS_SUBDIR, 2, size, NULL); if (!req) GOTO(out, rc = -ENOMEM); mdc_is_subdir_pack(req, REQ_REC_OFF, pfid, cfid, 0); ptlrpc_req_set_repsize(req, 2, size); rc = ptlrpc_queue_wait(req); if (rc != 0 && rc != -EREMOTE) GOTO(out, rc); body = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*body), lustre_swab_mdt_body); if (body == NULL) { CERROR ("Can't unpack mdt_body\n"); GOTO(out, rc = -EPROTO); } EXIT; out: *request = req; return rc; } static int mdc_xattr_common(struct obd_export *exp, const struct lu_fid *fid, struct obd_capa *oc, int opcode, obd_valid valid, const char *xattr_name, const char *input, int input_size, int output_size, int flags, struct ptlrpc_request **request) { struct ptlrpc_request *req; int size[5] = { sizeof(struct ptlrpc_body), sizeof(struct mdt_body) }; int bufcnt = 3, offset = REQ_REC_OFF + 2; int rc, xattr_namelen = 0, remote_acl = 0; void *tmp; ENTRY; size[REQ_REC_OFF + 1] = oc ? sizeof(struct lustre_capa) : 0; if (xattr_name) { xattr_namelen = strlen(xattr_name) + 1; size[bufcnt++] = xattr_namelen; } if (input_size) { LASSERT(input); size[bufcnt++] = input_size; } req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION, opcode, bufcnt, size, NULL); if (!req) GOTO(out, rc = -ENOMEM); /* request data */ mdc_pack_req_body(req, REQ_REC_OFF, valid, fid, oc, output_size, flags); if (xattr_name) { tmp = lustre_msg_buf(req->rq_reqmsg, offset++, xattr_namelen); memcpy(tmp, xattr_name, xattr_namelen); if (!strcmp(xattr_name, XATTR_NAME_LUSTRE_ACL)) remote_acl = 1; } if (input_size) { tmp = lustre_msg_buf(req->rq_reqmsg, offset++, input_size); memcpy(tmp, input, input_size); } /* reply buffers */ if (opcode == MDS_GETXATTR) { size[REPLY_REC_OFF] = sizeof(struct mdt_body); bufcnt = 2; } else { bufcnt = 1; } /* we do this even output_size is 0, because server is doing that */ size[bufcnt++] = output_size; ptlrpc_req_set_repsize(req, bufcnt, size); /* make rpc */ /* NB: set remote acl doesn't need hold rpc lock, because it just * send command to MDS, and when it's executed on mountpoint on MDS, * another mdc_xattr_common() will be invoked there. */ if (opcode == MDS_SETXATTR && !remote_acl) mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL); rc = ptlrpc_queue_wait(req); if (opcode == MDS_SETXATTR && !remote_acl) mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL); if (rc != 0) GOTO(err_out, rc); if (opcode == MDS_GETXATTR) { struct mdt_body * body = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*body), lustre_swab_mdt_body); if (body == NULL) { CERROR ("Can't unpack mdt_body\n"); GOTO(err_out, rc = -EPROTO); } } out: *request = req; RETURN (rc); err_out: ptlrpc_req_finished(req); req = NULL; goto out; } int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid, struct obd_capa *oc, obd_valid valid, const char *xattr_name, const char *input, int input_size, int output_size, int flags, struct ptlrpc_request **request) { return mdc_xattr_common(exp, fid, oc, MDS_SETXATTR, valid, xattr_name, input, input_size, output_size, flags, request); } int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid, struct obd_capa *oc, obd_valid valid, const char *xattr_name, const char *input, int input_size, int output_size, int flags, struct ptlrpc_request **request) { return mdc_xattr_common(exp, fid, oc, MDS_GETXATTR, valid, xattr_name, input, input_size, output_size, flags, request); } #ifdef CONFIG_FS_POSIX_ACL static int mdc_unpack_acl(struct obd_export *exp, struct ptlrpc_request *req, struct lustre_md *md, unsigned int offset) { struct mdt_body *body = md->body; struct posix_acl *acl; void *buf; int rc; if (!body->aclsize) return 0; buf = lustre_msg_buf(req->rq_repmsg, offset, body->aclsize); if (!buf) { CERROR("aclsize %u, bufcount %u, bufsize %u\n", body->aclsize, lustre_msg_bufcount(req->rq_repmsg), (lustre_msg_bufcount(req->rq_repmsg) <= offset) ? -1 : lustre_msg_buflen(req->rq_repmsg, offset)); return -EPROTO; } acl = posix_acl_from_xattr(buf, body->aclsize); if (IS_ERR(acl)) { rc = PTR_ERR(acl); CERROR("convert xattr to acl: %d\n", rc); return rc; } rc = posix_acl_valid(acl); if (rc) { CERROR("validate acl: %d\n", rc); posix_acl_release(acl); return rc; } md->posix_acl = acl; return 0; } #else #define mdc_unpack_acl(exp, req, md, offset) 0 #endif int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req, int offset, struct obd_export *dt_exp, struct obd_export *md_exp, struct lustre_md *md) { int rc; ENTRY; LASSERT(md); memset(md, 0, sizeof(*md)); md->body = lustre_msg_buf(req->rq_repmsg, offset, sizeof (*md->body)); LASSERT (md->body != NULL); LASSERT_REPSWABBED(req, offset); offset++; if (md->body->valid & OBD_MD_FLEASIZE) { int lmmsize; struct lov_mds_md *lmm; LASSERT(S_ISREG(md->body->mode)); if (md->body->eadatasize == 0) { CERROR("OBD_MD_FLEASIZE set, but eadatasize 0\n"); RETURN(-EPROTO); } lmmsize = md->body->eadatasize; lmm = lustre_msg_buf(req->rq_repmsg, offset, lmmsize); LASSERT (lmm != NULL); LASSERT_REPSWABBED(req, offset); rc = obd_unpackmd(dt_exp, &md->lsm, lmm, lmmsize); if (rc < 0) RETURN(rc); LASSERT (rc >= sizeof (*md->lsm)); offset++; } else if (md->body->valid & OBD_MD_FLDIREA) { int lmvsize; struct lov_mds_md *lmv; LASSERT(S_ISDIR(md->body->mode)); if (md->body->eadatasize == 0) { CERROR("OBD_MD_FLDIREA is set, but eadatasize 0\n"); RETURN(-EPROTO); } if (md->body->valid & OBD_MD_MEA) { lmvsize = md->body->eadatasize; lmv = lustre_msg_buf(req->rq_repmsg, offset, lmvsize); LASSERT (lmv != NULL); LASSERT_REPSWABBED(req, offset); rc = obd_unpackmd(md_exp, (void *)&md->mea, lmv, lmvsize); if (rc < 0) RETURN(rc); LASSERT (rc >= sizeof (*md->mea)); } offset++; } rc = 0; /* remote permission */ if (md->body->valid & OBD_MD_FLRMTPERM) { md->remote_perm = lustre_msg_buf(req->rq_repmsg, offset++, sizeof(struct mdt_remote_perm)); LASSERT(md->remote_perm); } /* for ACL, it's possible that FLACL is set but aclsize is zero. only * when aclsize != 0 there's an actual segment for ACL in reply * buffer. */ else if (md->body->valid & OBD_MD_FLACL) { if (md->body->aclsize) { rc = mdc_unpack_acl(dt_exp, req, md, offset++); if (rc) GOTO(out, rc); #ifdef CONFIG_FS_POSIX_ACL } else { md->posix_acl = NULL; #endif } } if (md->body->valid & OBD_MD_FLMDSCAPA) { struct obd_capa *oc = mdc_unpack_capa(req, offset++); if (IS_ERR(oc)) GOTO(out, rc = PTR_ERR(oc)); md->mds_capa = oc; } if (md->body->valid & OBD_MD_FLOSSCAPA) { struct obd_capa *oc = mdc_unpack_capa(req, offset++); if (IS_ERR(oc)) GOTO(out, rc = PTR_ERR(oc)); md->oss_capa = oc; } EXIT; out: if (rc) { if (md->oss_capa) free_capa(md->oss_capa); if (md->mds_capa) free_capa(md->mds_capa); #ifdef CONFIG_FS_POSIX_ACL posix_acl_release(md->posix_acl); #endif if (md->lsm) obd_free_memmd(dt_exp, &md->lsm); } return rc; } int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md) { ENTRY; RETURN(0); } static void mdc_replay_open(struct ptlrpc_request *req) { struct md_open_data *mod = req->rq_cb_data; struct ptlrpc_request *cur, *tmp; struct obd_client_handle *och; struct lustre_handle old; struct mdt_body *body; ENTRY; if (mod == NULL) { DEBUG_REQ(D_ERROR, req, "Can't properly replay without open data."); EXIT; return; } body = lustre_swab_repbuf(req, DLM_REPLY_REC_OFF, sizeof(*body), lustre_swab_mdt_body); LASSERT(body != NULL); och = mod->mod_och; if (och != NULL) { struct lustre_handle *file_fh; LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC); file_fh = &och->och_fh; CDEBUG(D_HA, "updating handle from "LPX64" to "LPX64"\n", file_fh->cookie, body->handle.cookie); old = *file_fh; *file_fh = body->handle; } list_for_each_entry_safe(cur, tmp, &mod->mod_replay_list, rq_mod_list) { int opc = lustre_msg_get_opc(cur->rq_reqmsg); struct mdt_epoch *epoch = NULL; if (opc == MDS_CLOSE || opc == MDS_DONE_WRITING) { epoch = lustre_msg_buf(cur->rq_reqmsg, REQ_REC_OFF, sizeof(*epoch)); LASSERT(epoch); DEBUG_REQ(D_HA, cur, "updating %s body with new fh", opc == MDS_CLOSE ? "CLOSE" : "DONE_WRITING"); } else if (opc == MDS_REINT) { struct mdt_rec_setattr *rec; /* Check this is REINT_SETATTR. */ rec = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof (*rec)); LASSERT(rec && rec->sa_opcode == REINT_SETATTR); epoch = lustre_msg_buf(cur->rq_reqmsg, REQ_REC_OFF + 2, sizeof(*epoch)); LASSERT(epoch); DEBUG_REQ(D_HA, cur, "updating REINT_SETATTR body " "with new fh"); } if (epoch) { if (och != NULL) LASSERT(!memcmp(&old, &epoch->handle, sizeof(old))); epoch->handle = body->handle; } } EXIT; } void mdc_commit_delayed(struct ptlrpc_request *req) { struct md_open_data *mod = req->rq_cb_data; struct ptlrpc_request *cur, *tmp; DEBUG_REQ(D_HA, req, "req committed"); if (mod == NULL) return; req->rq_cb_data = NULL; req->rq_commit_cb = NULL; list_del_init(&req->rq_mod_list); if (req->rq_sequence) { list_for_each_entry_safe(cur, tmp, &mod->mod_replay_list, rq_mod_list) { LASSERT(cur != LP_POISON); LASSERT(cur->rq_type != LI_POISON); DEBUG_REQ(D_HA, cur, "req balanced"); LASSERT(cur->rq_transno != 0); LASSERT(cur->rq_import == req->rq_import); list_del_init(&cur->rq_mod_list); /* We no longer want to preserve this for transno- * unconditional replay. */ spin_lock(&cur->rq_lock); cur->rq_replay = 0; spin_unlock(&cur->rq_lock); } } if (list_empty(&mod->mod_replay_list)) { if (mod->mod_och != NULL) mod->mod_och->och_mod = NULL; OBD_FREE_PTR(mod); } } int mdc_set_open_replay_data(struct obd_export *exp, struct obd_client_handle *och, struct ptlrpc_request *open_req) { struct md_open_data *mod; struct mdt_rec_create *rec = lustre_msg_buf(open_req->rq_reqmsg, DLM_INTENT_REC_OFF, sizeof(*rec)); struct mdt_body *body = lustre_msg_buf(open_req->rq_repmsg, DLM_REPLY_REC_OFF, sizeof(*body)); struct obd_import *imp = open_req->rq_import; ENTRY; LASSERT(rec != NULL); /* Incoming message in my byte order (it's been swabbed). */ LASSERT_REPSWABBED(open_req, DLM_REPLY_REC_OFF); /* Outgoing messages always in my byte order. */ LASSERT(body != NULL); /*Only the import is replayable, we set replay_open data */ if (och && imp->imp_replayable) { OBD_ALLOC(mod, sizeof(*mod)); if (mod == NULL) { DEBUG_REQ(D_ERROR, open_req, "Can't allocate md_open_data"); RETURN(0); } CFS_INIT_LIST_HEAD(&mod->mod_replay_list); spin_lock(&open_req->rq_lock); if (!open_req->rq_replay) { OBD_FREE(mod, sizeof(*mod)); spin_unlock(&open_req->rq_lock); RETURN(0); } och->och_mod = mod; mod->mod_och = och; open_req->rq_cb_data = mod; list_add_tail(&open_req->rq_mod_list, &mod->mod_replay_list); open_req->rq_commit_cb = mdc_commit_delayed; spin_unlock(&open_req->rq_lock); } rec->cr_fid2 = body->fid1; rec->cr_ioepoch = body->ioepoch; rec->cr_old_handle.cookie = body->handle.cookie; open_req->rq_replay_cb = mdc_replay_open; if (!fid_is_sane(&body->fid1)) { DEBUG_REQ(D_ERROR, open_req, "Saving replay request with " "insane fid"); LBUG(); } DEBUG_REQ(D_HA, open_req, "Set up open replay data"); RETURN(0); } int mdc_clear_open_replay_data(struct obd_export *exp, struct obd_client_handle *och) { struct md_open_data *mod = och->och_mod; ENTRY; /* * Don't free the structure now (it happens in mdc_commit_delayed(), * after the last request is removed from its replay list), * but make sure that replay doesn't poke at the och, which is about to * be freed. */ LASSERT(mod != LP_POISON); if (mod != NULL) mod->mod_och = NULL; och->och_mod = NULL; RETURN(0); } int mdc_close(struct obd_export *exp, struct md_op_data *op_data, struct md_open_data *mod, struct ptlrpc_request **request) { struct obd_device *obd = class_exp2obd(exp); int reqsize[4] = { sizeof(struct ptlrpc_body), sizeof(struct mdt_epoch), sizeof(struct mdt_rec_setattr)}; int repsize[4] = { sizeof(struct ptlrpc_body), sizeof(struct mdt_body), obd->u.cli.cl_max_mds_easize, obd->u.cli.cl_max_mds_cookiesize }; struct ptlrpc_request *req; int rc; ENTRY; reqsize[REQ_REC_OFF + 2] = op_data->op_capa1 ? sizeof(struct lustre_capa) : 0; req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION, MDS_CLOSE, 4, reqsize, NULL); if (req == NULL) GOTO(out, rc = -ENOMEM); /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a * portal whose threads are not taking any DLM locks and are therefore * always progressing */ /* XXX FIXME bug 249 */ req->rq_request_portal = MDS_READPAGE_PORTAL; /* Ensure that this close's handle is fixed up during replay. */ if (likely(mod != NULL)) list_add_tail(&req->rq_mod_list, &mod->mod_replay_list); else CDEBUG(D_HA, "couldn't find open req; expecting close error\n"); mdc_close_pack(req, REQ_REC_OFF, op_data); ptlrpc_req_set_repsize(req, 4, repsize); req->rq_commit_cb = mdc_commit_delayed; req->rq_replay = 1; LASSERT(req->rq_cb_data == NULL); req->rq_cb_data = mod; mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL); rc = ptlrpc_queue_wait(req); mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL); if (req->rq_repmsg == NULL) { CDEBUG(D_HA, "request failed to send: %p, %d\n", req, req->rq_status); if (rc == 0) rc = req->rq_status ? req->rq_status : -EIO; } else if (rc == 0 || rc == -EAGAIN) { rc = lustre_msg_get_status(req->rq_repmsg); if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) { DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, err " "= %d", rc); if (rc > 0) rc = -rc; } else if (mod == NULL) { if (req->rq_import->imp_replayable) CERROR("Unexpected: can't find md_open_data," "but close succeeded with replayable imp" "Please tell CFS.\n"); } if (!lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(struct mdt_body), lustre_swab_mdt_body)) { CERROR("Error unpacking mdt_body\n"); rc = -EPROTO; } } EXIT; *request = req; out: if (rc != 0 && rc != -EAGAIN && req && req->rq_commit_cb) req->rq_commit_cb(req); return rc; } int mdc_done_writing(struct obd_export *exp, struct md_op_data *op_data, struct md_open_data *mod) { struct obd_device *obd = class_exp2obd(exp); struct ptlrpc_request *req; int size[4] = { sizeof(struct ptlrpc_body), sizeof(struct mdt_epoch), sizeof(struct mdt_rec_setattr)}; int repsize[2] = { sizeof(struct ptlrpc_body), sizeof(struct mdt_body)}; int rc; ENTRY; if (op_data->op_capa1) size[REQ_REC_OFF + 2] = sizeof(struct lustre_capa); req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION, MDS_DONE_WRITING, 4, size, NULL); if (req == NULL) RETURN(-ENOMEM); mdc_close_pack(req, REQ_REC_OFF, op_data); req->rq_replay = 1; req->rq_cb_data = mod; req->rq_commit_cb = mdc_commit_delayed; if (likely(mod != NULL)) list_add_tail(&req->rq_mod_list, &mod->mod_replay_list); else CDEBUG(D_HA, "couldn't find open req; expecting close error\n"); ptlrpc_req_set_repsize(req, 2, repsize); mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL); rc = ptlrpc_queue_wait(req); mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL); /* Close the open replay sequence if an error occured or no SOM * attribute update is needed. */ if (rc != -EAGAIN) ptlrpc_close_replay_seq(req); if (rc && rc != -EAGAIN && req->rq_commit_cb) req->rq_commit_cb(req); ptlrpc_req_finished(req); RETURN(rc); } #ifdef HAVE_SPLIT_SUPPORT int mdc_sendpage(struct obd_export *exp, const struct lu_fid *fid, const struct page *page, int offset) { int rc, size[3] = { sizeof(struct ptlrpc_body), sizeof(struct mdt_body) }; struct obd_import *imp = class_exp2cliimp(exp); struct ptlrpc_bulk_desc *desc = NULL; struct ptlrpc_request *req = NULL; ENTRY; CDEBUG(D_INODE, "object: "DFID"\n", PFID(fid)); req = ptlrpc_prep_req(imp, LUSTRE_MDS_VERSION, MDS_WRITEPAGE, 3, size, NULL); if (req == NULL) GOTO(out, rc = -ENOMEM); req->rq_request_portal = MDS_READPAGE_PORTAL; desc = ptlrpc_prep_bulk_imp(req, 1, BULK_GET_SOURCE, MDS_BULK_PORTAL); if (desc == NULL) GOTO(out, rc = -ENOMEM); /* NB req now owns desc and will free it when it gets freed. */ ptlrpc_prep_bulk_page(desc, (struct page *)page, 0, offset); mdc_readdir_pack(req, REQ_REC_OFF, 0, offset, fid, NULL); ptlrpc_req_set_repsize(req, 2, size); rc = ptlrpc_queue_wait(req); EXIT; out: if (req != NULL) ptlrpc_req_finished(req); return rc; } EXPORT_SYMBOL(mdc_sendpage); #endif int mdc_readpage(struct obd_export *exp, const struct lu_fid *fid, struct obd_capa *oc, __u64 offset, struct page *page, struct ptlrpc_request **request) { int rc, size[3] = { sizeof(struct ptlrpc_body), sizeof(struct mdt_body) }; struct obd_import *imp = class_exp2cliimp(exp); struct ptlrpc_bulk_desc *desc = NULL; struct ptlrpc_request *req = NULL; struct mdt_body *body; ENTRY; CDEBUG(D_INODE, "object: "DFID"\n", PFID(fid)); size[REQ_REC_OFF + 1] = oc ? sizeof(struct lustre_capa) : 0; req = ptlrpc_prep_req(imp, LUSTRE_MDS_VERSION, MDS_READPAGE, 3, size, NULL); if (req == NULL) GOTO(out, rc = -ENOMEM); /* XXX FIXME bug 249 */ req->rq_request_portal = MDS_READPAGE_PORTAL; desc = ptlrpc_prep_bulk_imp(req, 1, BULK_PUT_SINK, MDS_BULK_PORTAL); if (desc == NULL) GOTO(out, rc = -ENOMEM); /* NB req now owns desc and will free it when it gets freed */ ptlrpc_prep_bulk_page(desc, page, 0, CFS_PAGE_SIZE); mdc_readdir_pack(req, REQ_REC_OFF, offset, CFS_PAGE_SIZE, fid, oc); ptlrpc_req_set_repsize(req, 2, size); rc = ptlrpc_queue_wait(req); if (rc == 0) { body = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*body), lustre_swab_mdt_body); if (body == NULL) { CERROR("Can't unpack mdt_body\n"); GOTO(out, rc = -EPROTO); } if (req->rq_bulk->bd_nob_transferred != CFS_PAGE_SIZE) { CERROR ("Unexpected # bytes transferred: %d" " (%ld expected)\n", req->rq_bulk->bd_nob_transferred, CFS_PAGE_SIZE); GOTO(out, rc = -EPROTO); } } EXIT; out: *request = req; return rc; } static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len, void *karg, void *uarg) { struct obd_device *obd = exp->exp_obd; struct obd_ioctl_data *data = karg; struct obd_import *imp = obd->u.cli.cl_import; struct llog_ctxt *ctxt; int rc; ENTRY; #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) MOD_INC_USE_COUNT; #else if (!try_module_get(THIS_MODULE)) { CERROR("Can't get module. Is it alive?"); return -EINVAL; } #endif switch (cmd) { case OBD_IOC_CLIENT_RECOVER: rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1); if (rc < 0) GOTO(out, rc); GOTO(out, rc = 0); case IOC_OSC_SET_ACTIVE: rc = ptlrpc_set_import_active(imp, data->ioc_offset); GOTO(out, rc); case OBD_IOC_PARSE: { ctxt = llog_get_context(exp->exp_obd, LLOG_CONFIG_REPL_CTXT); rc = class_config_parse_llog(ctxt, data->ioc_inlbuf1, NULL); GOTO(out, rc); } #ifdef __KERNEL__ case OBD_IOC_LLOG_INFO: case OBD_IOC_LLOG_PRINT: { ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT); rc = llog_ioctl(ctxt, cmd, data); GOTO(out, rc); } #endif case OBD_IOC_POLL_QUOTACHECK: rc = lquota_poll_check(quota_interface, exp, (struct if_quotacheck *)karg); GOTO(out, rc); default: CERROR("mdc_ioctl(): unrecognised ioctl %#x\n", cmd); GOTO(out, rc = -ENOTTY); } out: #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) MOD_DEC_USE_COUNT; #else module_put(THIS_MODULE); #endif return rc; } int mdc_set_info_async(struct obd_export *exp, obd_count keylen, void *key, obd_count vallen, void *val, struct ptlrpc_request_set *set) { struct obd_import *imp = class_exp2cliimp(exp); int rc = -EINVAL; if (KEY_IS(KEY_INIT_RECOV)) { if (vallen != sizeof(int)) RETURN(-EINVAL); spin_lock(&imp->imp_lock); imp->imp_initial_recov = *(int *)val; spin_unlock(&imp->imp_lock); CDEBUG(D_HA, "%s: set imp_initial_recov = %d\n", exp->exp_obd->obd_name, imp->imp_initial_recov); RETURN(0); } /* Turn off initial_recov after we try all backup servers once */ if (KEY_IS(KEY_INIT_RECOV_BACKUP)) { if (vallen != sizeof(int)) RETURN(-EINVAL); spin_lock(&imp->imp_lock); imp->imp_initial_recov_bk = *(int *)val; if (imp->imp_initial_recov_bk) imp->imp_initial_recov = 1; spin_unlock(&imp->imp_lock); CDEBUG(D_HA, "%s: set imp_initial_recov_bk = %d\n", exp->exp_obd->obd_name, imp->imp_initial_recov_bk); RETURN(0); } if (KEY_IS(KEY_READ_ONLY)) { struct ptlrpc_request *req; int size[3] = { sizeof(struct ptlrpc_body), keylen, vallen }; char *bufs[3] = { NULL, key, val }; if (vallen != sizeof(int)) RETURN(-EINVAL); spin_lock(&imp->imp_lock); if (*((int *)val)) { imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY; imp->imp_connect_data.ocd_connect_flags |= OBD_CONNECT_RDONLY; } else { imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY; imp->imp_connect_data.ocd_connect_flags &= ~OBD_CONNECT_RDONLY; } spin_unlock(&imp->imp_lock); req = ptlrpc_prep_req(imp, LUSTRE_MDS_VERSION, MDS_SET_INFO, 3, size, bufs); if (req == NULL) RETURN(-ENOMEM); ptlrpc_req_set_repsize(req, 1, NULL); if (set) { rc = 0; ptlrpc_set_add_req(set, req); ptlrpc_check_set(set); } else { rc = ptlrpc_queue_wait(req); ptlrpc_req_finished(req); } RETURN(rc); } if (KEY_IS(KEY_FLUSH_CTX)) { sptlrpc_import_flush_my_ctx(imp); RETURN(0); } if (KEY_IS(KEY_MDS_CONN)) { struct obd_import *imp = class_exp2cliimp(exp); /* mds-mds import */ spin_lock(&imp->imp_lock); imp->imp_server_timeout = 1; spin_unlock(&imp->imp_lock); imp->imp_client->cli_request_portal = MDS_MDS_PORTAL; CDEBUG(D_OTHER|D_WARNING, "%s: timeout / 2\n", exp->exp_obd->obd_name); RETURN(0); } RETURN(rc); } int mdc_get_info(struct obd_export *exp, __u32 keylen, void *key, __u32 *vallen, void *val) { int rc = -EINVAL; if (KEY_IS(KEY_MAX_EASIZE)) { int mdsize, *max_easize; if (*vallen != sizeof(int)) RETURN(-EINVAL); mdsize = *(int*)val; if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize) exp->exp_obd->u.cli.cl_max_mds_easize = mdsize; max_easize = val; *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize; RETURN(0); } if (KEY_IS(KEY_CONN_DATA)) { struct obd_import *imp = class_exp2cliimp(exp); struct obd_connect_data *data = val; if (*vallen != sizeof(*data)) RETURN(-EINVAL); *data = imp->imp_connect_data; RETURN(0); } RETURN(rc); } static int mdc_statfs(struct obd_device *obd, struct obd_statfs *osfs, __u64 max_age) { struct ptlrpc_request *req; struct obd_statfs *msfs; int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*msfs) }; ENTRY; /* We could possibly pass max_age in the request (as an absolute * timestamp or a "seconds.usec ago") so the target can avoid doing * extra calls into the filesystem if that isn't necessary (e.g. * during mount that would help a bit). Having relative timestamps * is not so great if request processing is slow, while absolute * timestamps are not ideal because they need time synchronization. */ req = ptlrpc_prep_req(obd->u.cli.cl_import, LUSTRE_MDS_VERSION, MDS_STATFS, 1, NULL, NULL); if (!req) RETURN(-ENOMEM); ptlrpc_req_set_repsize(req, 2, size); rc = ptlrpc_queue_wait(req); if (rc) { /* check connection error first */ if (obd->u.cli.cl_import->imp_connect_error) rc = obd->u.cli.cl_import->imp_connect_error; GOTO(out, rc); } msfs = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*msfs), lustre_swab_obd_statfs); if (msfs == NULL) { CERROR("Can't unpack obd_statfs\n"); GOTO(out, rc = -EPROTO); } memcpy(osfs, msfs, sizeof(*msfs)); EXIT; out: ptlrpc_req_finished(req); return rc; } static int mdc_pin(struct obd_export *exp, const struct lu_fid *fid, struct obd_capa *oc, struct obd_client_handle *handle, int flag) { struct ptlrpc_request *req; struct mdt_body *body; int rc, size[3] = { sizeof(struct ptlrpc_body), sizeof(*body) }; ENTRY; size[REQ_REC_OFF + 1] = oc ? sizeof(struct lustre_capa) : 0; req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION, MDS_PIN, 3, size, NULL); if (req == NULL) RETURN(-ENOMEM); body = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof (*body)); body->fid1 = *fid; body->flags = flag; mdc_pack_capa(req, REQ_REC_OFF + 1, oc); ptlrpc_req_set_repsize(req, 2, size); mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL); rc = ptlrpc_queue_wait(req); mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL); if (rc) { CERROR("pin failed: %d\n", rc); ptlrpc_req_finished(req); RETURN(rc); } body = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*body), lustre_swab_mdt_body); if (body == NULL) { ptlrpc_req_finished(req); RETURN(rc); } memcpy(&handle->och_fh, &body->handle, sizeof(body->handle)); handle->och_magic = OBD_CLIENT_HANDLE_MAGIC; OBD_ALLOC(handle->och_mod, sizeof(*handle->och_mod)); if (handle->och_mod == NULL) { DEBUG_REQ(D_ERROR, req, "can't allocate md_open_data"); RETURN(-ENOMEM); } /* will be dropped by unpin */ CFS_INIT_LIST_HEAD(&handle->och_mod->mod_replay_list); list_add_tail(&req->rq_mod_list, &handle->och_mod->mod_replay_list); RETURN(rc); } static int mdc_unpin(struct obd_export *exp, struct obd_client_handle *handle, int flag) { struct ptlrpc_request *req; struct mdt_body *body; int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*body) }; ENTRY; if (handle->och_magic != OBD_CLIENT_HANDLE_MAGIC) RETURN(0); req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION, MDS_CLOSE, 2, size, NULL); if (req == NULL) RETURN(-ENOMEM); body = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof(*body)); memcpy(&body->handle, &handle->och_fh, sizeof(body->handle)); body->flags = flag; ptlrpc_req_set_repsize(req, 1, NULL); mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL); rc = ptlrpc_queue_wait(req); mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL); if (rc != 0) CERROR("unpin failed: %d\n", rc); ptlrpc_req_finished(req); LASSERT(!list_empty(&handle->och_mod->mod_replay_list)); req = list_entry(handle->och_mod->mod_replay_list.next, typeof(*req), rq_mod_list); list_del_init(&req->rq_mod_list); ptlrpc_req_finished(req); LASSERT(list_empty(&handle->och_mod->mod_replay_list)); OBD_FREE(handle->och_mod, sizeof(*handle->och_mod)); RETURN(rc); } int mdc_sync(struct obd_export *exp, const struct lu_fid *fid, struct obd_capa *oc, struct ptlrpc_request **request) { struct ptlrpc_request *req; int size[3] = { sizeof(struct ptlrpc_body), sizeof(struct mdt_body) }; int rc; ENTRY; size[REQ_REC_OFF + 1] = oc ? sizeof(struct lustre_capa) : 0; req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION, MDS_SYNC, 3, size, NULL); if (!req) RETURN(rc = -ENOMEM); mdc_pack_req_body(req, REQ_REC_OFF, 0, fid, oc, 0, 0); ptlrpc_req_set_repsize(req, 2, size); rc = ptlrpc_queue_wait(req); if (rc || request == NULL) ptlrpc_req_finished(req); else *request = req; RETURN(rc); } static int mdc_import_event(struct obd_device *obd, struct obd_import *imp, enum obd_import_event event) { int rc = 0; LASSERT(imp->imp_obd == obd); switch (event) { case IMP_EVENT_DISCON: { #if 0 /* XXX Pass event up to OBDs stack. used only for FLD now */ rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DISCON, NULL); #endif break; } case IMP_EVENT_INACTIVE: { struct client_obd *cli = &obd->u.cli; /* * Flush current sequence to make client obtain new one * from server in case of disconnect/reconnect. * If range is already empty then no need to flush it. */ if (cli->cl_seq != NULL && !range_is_exhausted(&cli->cl_seq->lcs_space)) { seq_client_flush(cli->cl_seq); } rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL); break; } case IMP_EVENT_INVALIDATE: { struct ldlm_namespace *ns = obd->obd_namespace; ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY); break; } case IMP_EVENT_ACTIVE: { rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL); break; } case IMP_EVENT_OCD: rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL); break; default: CERROR("Unknown import event %x\n", event); LBUG(); } RETURN(rc); } static int mdc_fid_init(struct obd_export *exp) { struct client_obd *cli = &exp->exp_obd->u.cli; char *prefix; int rc; ENTRY; OBD_ALLOC_PTR(cli->cl_seq); if (cli->cl_seq == NULL) RETURN(-ENOMEM); OBD_ALLOC(prefix, MAX_OBD_NAME + 5); if (prefix == NULL) GOTO(out_free_seq, rc = -ENOMEM); snprintf(prefix, MAX_OBD_NAME + 5, "srv-%s", exp->exp_obd->obd_name); /* Init client side sequence-manager */ rc = seq_client_init(cli->cl_seq, exp, LUSTRE_SEQ_METADATA, prefix, NULL); OBD_FREE(prefix, MAX_OBD_NAME + 5); if (rc) GOTO(out_free_seq, rc); RETURN(rc); out_free_seq: OBD_FREE_PTR(cli->cl_seq); cli->cl_seq = NULL; return rc; } static int mdc_fid_fini(struct obd_export *exp) { struct client_obd *cli = &exp->exp_obd->u.cli; ENTRY; if (cli->cl_seq != NULL) { seq_client_fini(cli->cl_seq); OBD_FREE_PTR(cli->cl_seq); cli->cl_seq = NULL; } RETURN(0); } int mdc_fid_alloc(struct obd_export *exp, struct lu_fid *fid, struct md_op_data *op_data) { struct client_obd *cli = &exp->exp_obd->u.cli; struct lu_client_seq *seq = cli->cl_seq; ENTRY; RETURN(seq_client_alloc_fid(seq, fid)); } /* XXX This method is used only to clear current fid seq * once fld/mds insert failed */ static int mdc_fid_delete(struct obd_export *exp, const struct lu_fid *fid) { struct client_obd *cli = &exp->exp_obd->u.cli; seq_client_flush(cli->cl_seq); return 0; } static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg) { struct client_obd *cli = &obd->u.cli; struct lprocfs_static_vars lvars; int rc; ENTRY; OBD_ALLOC(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock)); if (!cli->cl_rpc_lock) RETURN(-ENOMEM); mdc_init_rpc_lock(cli->cl_rpc_lock); ptlrpcd_addref(); OBD_ALLOC(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock)); if (!cli->cl_setattr_lock) GOTO(err_rpc_lock, rc = -ENOMEM); mdc_init_rpc_lock(cli->cl_setattr_lock); OBD_ALLOC(cli->cl_close_lock, sizeof (*cli->cl_close_lock)); if (!cli->cl_close_lock) GOTO(err_setattr_lock, rc = -ENOMEM); mdc_init_rpc_lock(cli->cl_close_lock); rc = client_obd_setup(obd, cfg); if (rc) GOTO(err_close_lock, rc); lprocfs_init_vars(mdc, &lvars); lprocfs_obd_setup(obd, lvars.obd_vars); ptlrpc_lprocfs_register_obd(obd); rc = obd_llog_init(obd, NULL, obd, 0, NULL, NULL); if (rc) { mdc_cleanup(obd); CERROR("failed to setup llogging subsystems\n"); } RETURN(rc); err_close_lock: OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock)); err_setattr_lock: OBD_FREE(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock)); err_rpc_lock: OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock)); ptlrpcd_decref(); RETURN(rc); } /* Initialize the default and maximum LOV EA and cookie sizes. This allows * us to make MDS RPCs with large enough reply buffers to hold the * maximum-sized (= maximum striped) EA and cookie without having to * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */ int mdc_init_ea_size(struct obd_export *exp, int easize, int def_easize, int cookiesize) { struct obd_device *obd = exp->exp_obd; struct client_obd *cli = &obd->u.cli; ENTRY; if (cli->cl_max_mds_easize < easize) cli->cl_max_mds_easize = easize; if (cli->cl_default_mds_easize < def_easize) cli->cl_default_mds_easize = def_easize; if (cli->cl_max_mds_cookiesize < cookiesize) cli->cl_max_mds_cookiesize = cookiesize; RETURN(0); } static int mdc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage) { int rc = 0; ENTRY; switch (stage) { case OBD_CLEANUP_EARLY: case OBD_CLEANUP_EXPORTS: /* If we set up but never connected, the client import will not have been cleaned. */ if (obd->u.cli.cl_import) { struct obd_import *imp; imp = obd->u.cli.cl_import; CERROR("client import never connected\n"); ptlrpc_invalidate_import(imp); ptlrpc_free_rq_pool(imp->imp_rq_pool); class_destroy_import(imp); obd->u.cli.cl_import = NULL; } break; case OBD_CLEANUP_SELF_EXP: rc = obd_llog_finish(obd, 0); if (rc != 0) CERROR("failed to cleanup llogging subsystems\n"); case OBD_CLEANUP_OBD: break; } RETURN(rc); } static int mdc_cleanup(struct obd_device *obd) { struct client_obd *cli = &obd->u.cli; OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock)); OBD_FREE(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock)); OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock)); ptlrpc_lprocfs_unregister_obd(obd); lprocfs_obd_cleanup(obd); ptlrpcd_decref(); return client_obd_cleanup(obd); } static int mdc_llog_init(struct obd_device *obd, struct obd_llogs *llogs, struct obd_device *tgt, int count, struct llog_catid *logid, struct obd_uuid *uuid) { struct llog_ctxt *ctxt; int rc; ENTRY; rc = llog_setup(obd, llogs, LLOG_CONFIG_REPL_CTXT, tgt, 0, NULL, &llog_client_ops); if (rc == 0) { ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT); ctxt->loc_imp = obd->u.cli.cl_import; } rc = llog_setup(obd, llogs, LLOG_LOVEA_REPL_CTXT, tgt, 0, NULL, &llog_client_ops); if (rc == 0) { ctxt = llog_get_context(obd, LLOG_LOVEA_REPL_CTXT); ctxt->loc_imp = obd->u.cli.cl_import; } RETURN(rc); } static int mdc_llog_finish(struct obd_device *obd, int count) { int rc; ENTRY; rc = llog_cleanup(llog_get_context(obd, LLOG_LOVEA_REPL_CTXT)); if (rc) { CERROR("can not cleanup LLOG_CONFIG_REPL_CTXT rc %d\n", rc); } rc = llog_cleanup(llog_get_context(obd, LLOG_CONFIG_REPL_CTXT)); RETURN(rc); } static int mdc_process_config(struct obd_device *obd, obd_count len, void *buf) { struct lustre_cfg *lcfg = buf; struct lprocfs_static_vars lvars; int rc = 0; lprocfs_init_vars(mdc, &lvars); rc = class_process_proc_param(PARAM_MDC, lvars.obd_vars, lcfg, obd); return(rc); } /* get remote permission for current user on fid */ int mdc_get_remote_perm(struct obd_export *exp, const struct lu_fid *fid, struct obd_capa *oc, struct ptlrpc_request **request) { struct ptlrpc_request *req; struct mdt_body *body; struct mdt_remote_perm *perm; int size[5] = { sizeof(struct ptlrpc_body), sizeof(*body) }; int rc; ENTRY; size[REQ_REC_OFF + 1] = oc ? sizeof(struct lustre_capa) : 0; *request = NULL; req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION, MDS_GETATTR, 3, size, NULL); if (!req) RETURN(-ENOMEM); mdc_pack_req_body(req, REQ_REC_OFF, OBD_MD_FLRMTPERM, fid, oc, 0, 0); size[REPLY_REC_OFF + 1] = sizeof(*perm); ptlrpc_req_set_repsize(req, 5, size); rc = ptlrpc_queue_wait(req); if (rc) { ptlrpc_req_finished(req); RETURN(rc); } body = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*body), lustre_swab_mdt_body); LASSERT(body); LASSERT(body->valid & OBD_MD_FLRMTPERM); perm = lustre_swab_repbuf(req, REPLY_REC_OFF + 1, sizeof(*perm), lustre_swab_mdt_remote_perm); LASSERT(perm); *request = req; RETURN(0); } static int mdc_interpret_renew_capa(struct ptlrpc_request *req, void *unused, int status) { struct obd_capa *oc = req->rq_async_args.pointer_arg[0]; renew_capa_cb_t cb = req->rq_async_args.pointer_arg[1]; struct mdt_body *body = NULL; struct lustre_capa *capa; ENTRY; if (status) GOTO(out, capa = ERR_PTR(status)); body = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*body), lustre_swab_mdt_body); if (body == NULL) GOTO(out, capa = ERR_PTR(-EFAULT)); if ((body->valid & OBD_MD_FLOSSCAPA) == 0) GOTO(out, capa = ERR_PTR(-ENOENT)); capa = lustre_unpack_capa(req->rq_repmsg, REPLY_REC_OFF + 1); if (!capa) GOTO(out, capa = ERR_PTR(-EFAULT)); EXIT; out: cb(oc, capa); return 0; } static int mdc_renew_capa(struct obd_export *exp, struct obd_capa *oc, renew_capa_cb_t cb) { struct ptlrpc_request *req; int size[5] = { sizeof(struct ptlrpc_body), sizeof(struct mdt_body), sizeof(struct lustre_capa) }; ENTRY; req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION, MDS_GETATTR, 3, size, NULL); if (!req) RETURN(-ENOMEM); mdc_pack_req_body(req, REQ_REC_OFF, OBD_MD_FLOSSCAPA, &oc->c_capa.lc_fid, oc, 0, 0); ptlrpc_req_set_repsize(req, 5, size); req->rq_async_args.pointer_arg[0] = oc; req->rq_async_args.pointer_arg[1] = cb; req->rq_interpret_reply = mdc_interpret_renew_capa; ptlrpcd_add_req(req); RETURN(0); } static int mdc_connect(const struct lu_env *env, struct lustre_handle *dlm_handle, struct obd_device *obd, struct obd_uuid *cluuid, struct obd_connect_data *data) { struct obd_import *imp = obd->u.cli.cl_import; /* mds-mds import features */ if (data && (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) { spin_lock(&imp->imp_lock); imp->imp_server_timeout = 1; spin_unlock(&imp->imp_lock); imp->imp_client->cli_request_portal = MDS_MDS_PORTAL; CDEBUG(D_OTHER, "%s: Set 'mds' portal and timeout\n", obd->obd_name); } return client_connect_import(env, dlm_handle, obd, cluuid, data); } struct obd_ops mdc_obd_ops = { .o_owner = THIS_MODULE, .o_setup = mdc_setup, .o_precleanup = mdc_precleanup, .o_cleanup = mdc_cleanup, .o_add_conn = client_import_add_conn, .o_del_conn = client_import_del_conn, .o_connect = mdc_connect, .o_disconnect = client_disconnect_export, .o_iocontrol = mdc_iocontrol, .o_set_info_async = mdc_set_info_async, .o_statfs = mdc_statfs, .o_pin = mdc_pin, .o_unpin = mdc_unpin, .o_fid_init = mdc_fid_init, .o_fid_fini = mdc_fid_fini, .o_fid_alloc = mdc_fid_alloc, .o_fid_delete = mdc_fid_delete, .o_import_event = mdc_import_event, .o_llog_init = mdc_llog_init, .o_llog_finish = mdc_llog_finish, .o_get_info = mdc_get_info, .o_process_config = mdc_process_config, }; struct md_ops mdc_md_ops = { .m_getstatus = mdc_getstatus, .m_change_cbdata = mdc_change_cbdata, .m_close = mdc_close, .m_create = mdc_create, .m_done_writing = mdc_done_writing, .m_enqueue = mdc_enqueue, .m_getattr = mdc_getattr, .m_getattr_name = mdc_getattr_name, .m_intent_lock = mdc_intent_lock, .m_link = mdc_link, .m_is_subdir = mdc_is_subdir, .m_rename = mdc_rename, .m_setattr = mdc_setattr, .m_setxattr = mdc_setxattr, .m_getxattr = mdc_getxattr, .m_sync = mdc_sync, .m_readpage = mdc_readpage, .m_unlink = mdc_unlink, .m_cancel_unused = mdc_cancel_unused, .m_init_ea_size = mdc_init_ea_size, .m_set_lock_data = mdc_set_lock_data, .m_lock_match = mdc_lock_match, .m_get_lustre_md = mdc_get_lustre_md, .m_free_lustre_md = mdc_free_lustre_md, .m_set_open_replay_data = mdc_set_open_replay_data, .m_clear_open_replay_data = mdc_clear_open_replay_data, .m_get_remote_perm = mdc_get_remote_perm, .m_renew_capa = mdc_renew_capa }; extern quota_interface_t mdc_quota_interface; int __init mdc_init(void) { int rc; struct lprocfs_static_vars lvars; lprocfs_init_vars(mdc, &lvars); request_module("lquota"); quota_interface = PORTAL_SYMBOL_GET(mdc_quota_interface); init_obd_quota_ops(quota_interface, &mdc_obd_ops); rc = class_register_type(&mdc_obd_ops, &mdc_md_ops, lvars.module_vars, LUSTRE_MDC_NAME, NULL); if (rc && quota_interface) PORTAL_SYMBOL_PUT(mdc_quota_interface); RETURN(rc); } #ifdef __KERNEL__ static void /*__exit*/ mdc_exit(void) { if (quota_interface) PORTAL_SYMBOL_PUT(mdc_quota_interface); class_unregister_type(LUSTRE_MDC_NAME); } MODULE_AUTHOR("Cluster File Systems, Inc. "); MODULE_DESCRIPTION("Lustre Metadata Client"); MODULE_LICENSE("GPL"); module_init(mdc_init); module_exit(mdc_exit); #endif