4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License version 2 for more details. A copy is
14 * included in the COPYING file that accompanied this code.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * Copyright (c) 2012, 2013, Intel Corporation.
24 * Use is subject to license terms.
25 * Copyright (c) 2011, 2012 Commissariat a l'energie atomique et aux energies
29 * lustre/mdt/mdt_hsm.c
31 * Lustre Metadata Target (mdt) request handler
33 * Author: Aurelien Degremont <aurelien.degremont@cea.fr>
34 * Author: JC Lafoucriere <jacques-charles.lafoucriere@cea.fr>
37 #define DEBUG_SUBSYSTEM S_MDS
39 #include "mdt_internal.h"
41 /* Max allocation to satisfy single HSM RPC. */
42 #define MDT_HSM_ALLOC_MAX (1 << 20)
44 #define MDT_HSM_ALLOC(ptr, size) \
46 if ((size) <= MDT_HSM_ALLOC_MAX) \
47 OBD_ALLOC_LARGE((ptr), (size)); \
52 #define MDT_HSM_FREE(ptr, size) OBD_FREE_LARGE((ptr), (size))
55 * Update on-disk HSM attributes.
57 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
58 const struct md_hsm *mh)
60 struct md_object *next = mdt_object_child(obj);
61 struct lu_buf *buf = &info->mti_buf;
62 struct hsm_attrs *attrs;
66 attrs = (struct hsm_attrs *)info->mti_xattr_buf;
67 CLASSERT(sizeof(info->mti_xattr_buf) >= sizeof(*attrs));
69 /* pack HSM attributes */
70 lustre_hsm2buf(info->mti_xattr_buf, mh);
72 /* update SOM attributes */
74 buf->lb_len = sizeof(*attrs);
75 rc = mo_xattr_set(info->mti_env, next, buf, XATTR_NAME_HSM, 0);
80 static inline bool mdt_hsm_is_admin(struct mdt_thread_info *info)
85 if (info->mti_body == NULL)
88 rc = mdt_init_ucred(info, (struct mdt_body *)info->mti_body);
92 is_admin = md_capable(mdt_ucred(info), CFS_CAP_SYS_ADMIN);
100 * Extract information coming from a copytool and asks coordinator to update
101 * a request status depending on the update content.
103 * Copytools could use this to report failure in their process.
105 * This is HSM_PROGRESS RPC handler.
107 int mdt_hsm_progress(struct tgt_session_info *tsi)
109 struct mdt_thread_info *info;
110 struct hsm_progress_kernel *hpk;
114 if (tsi->tsi_mdt_body == NULL)
117 hpk = req_capsule_client_get(tsi->tsi_pill, &RMF_MDS_HSM_PROGRESS);
119 RETURN(err_serious(-EPROTO));
121 hpk->hpk_errval = lustre_errno_ntoh(hpk->hpk_errval);
123 CDEBUG(D_HSM, "Progress on "DFID": len="LPU64" err=%d\n",
124 PFID(&hpk->hpk_fid), hpk->hpk_extent.length, hpk->hpk_errval);
127 CDEBUG(D_HSM, "Copytool progress on "DFID" failed (%d); %s.\n",
128 PFID(&hpk->hpk_fid), hpk->hpk_errval,
129 hpk->hpk_flags & HP_FLAG_RETRY ? "will retry" : "fatal");
131 if (hpk->hpk_flags & HP_FLAG_COMPLETED)
132 CDEBUG(D_HSM, "Finished "DFID" (%d) cancel cookie="LPX64"\n",
133 PFID(&hpk->hpk_fid), hpk->hpk_errval, hpk->hpk_cookie);
135 info = tsi2mdt_info(tsi);
136 if (!mdt_hsm_is_admin(info))
137 GOTO(out, rc = -EPERM);
139 rc = mdt_hsm_coordinator_update(info, hpk);
141 mdt_thread_info_fini(info);
145 int mdt_hsm_ct_register(struct tgt_session_info *tsi)
147 struct mdt_thread_info *info;
152 archives = req_capsule_client_get(tsi->tsi_pill, &RMF_MDS_HSM_ARCHIVE);
153 if (archives == NULL)
154 RETURN(err_serious(-EPROTO));
156 info = tsi2mdt_info(tsi);
157 if (!mdt_hsm_is_admin(info))
158 GOTO(out, rc = -EPERM);
160 /* XXX: directly include this function here? */
161 rc = mdt_hsm_agent_register_mask(info, &tsi->tsi_exp->exp_client_uuid,
164 mdt_thread_info_fini(info);
168 int mdt_hsm_ct_unregister(struct tgt_session_info *tsi)
170 struct mdt_thread_info *info;
174 if (tsi->tsi_mdt_body == NULL)
177 info = tsi2mdt_info(tsi);
178 if (!mdt_hsm_is_admin(info))
179 GOTO(out, rc = -EPERM);
181 /* XXX: directly include this function here? */
182 rc = mdt_hsm_agent_unregister(info, &tsi->tsi_exp->exp_client_uuid);
184 mdt_thread_info_fini(info);
189 * Retrieve the current HSM flags, archive id and undergoing HSM requests for
190 * the fid provided in RPC body.
192 * Current requests are read from coordinator states.
194 * This is MDS_HSM_STATE_GET RPC handler.
196 int mdt_hsm_state_get(struct tgt_session_info *tsi)
198 struct mdt_thread_info *info = tsi2mdt_info(tsi);
199 struct mdt_object *obj = info->mti_object;
200 struct md_attr *ma = &info->mti_attr;
201 struct hsm_user_state *hus;
202 struct mdt_lock_handle *lh;
206 if (info->mti_body == NULL || obj == NULL)
207 GOTO(out, rc = -EPROTO);
209 /* Only valid if client is remote */
210 rc = mdt_init_ucred(info, (struct mdt_body *)info->mti_body);
212 GOTO(out, rc = err_serious(rc));
214 lh = &info->mti_lh[MDT_LH_CHILD];
215 mdt_lock_reg_init(lh, LCK_PR);
216 rc = mdt_object_lock(info, obj, lh, MDS_INODELOCK_LOOKUP,
222 ma->ma_need = MA_HSM;
223 rc = mdt_attr_get_complex(info, obj, ma);
225 GOTO(out_unlock, rc);
227 if (req_capsule_get_size(info->mti_pill, &RMF_CAPA1, RCL_CLIENT))
228 mdt_set_capainfo(info, 0, &info->mti_body->mbo_fid1,
229 req_capsule_client_get(info->mti_pill,
232 hus = req_capsule_server_get(tsi->tsi_pill, &RMF_HSM_USER_STATE);
234 GOTO(out_unlock, rc = -EPROTO);
236 /* Current HSM flags */
237 hus->hus_states = ma->ma_hsm.mh_flags;
238 hus->hus_archive_id = ma->ma_hsm.mh_arch_id;
242 mdt_object_unlock(info, obj, lh, 1);
244 mdt_exit_ucred(info);
246 mdt_thread_info_fini(info);
251 * Change HSM state and archive number of a file.
253 * Archive number is changed iif the value is not 0.
254 * The new flagset that will be computed should result in a coherent state.
255 * This function checks that are flags are compatible.
257 * This is MDS_HSM_STATE_SET RPC handler.
259 int mdt_hsm_state_set(struct tgt_session_info *tsi)
261 struct mdt_thread_info *info = tsi2mdt_info(tsi);
262 struct mdt_object *obj = info->mti_object;
263 struct md_attr *ma = &info->mti_attr;
264 struct hsm_state_set *hss;
265 struct mdt_lock_handle *lh;
270 hss = req_capsule_client_get(info->mti_pill, &RMF_HSM_STATE_SET);
272 if (info->mti_body == NULL || obj == NULL || hss == NULL)
273 GOTO(out, rc = -EPROTO);
275 /* Only valid if client is remote */
276 rc = mdt_init_ucred(info, (struct mdt_body *)info->mti_body);
278 GOTO(out, rc = err_serious(rc));
280 lh = &info->mti_lh[MDT_LH_CHILD];
281 mdt_lock_reg_init(lh, LCK_PW);
282 rc = mdt_object_lock(info, obj, lh, MDS_INODELOCK_LOOKUP |
283 MDS_INODELOCK_XATTR, MDT_LOCAL_LOCK);
287 if (req_capsule_get_size(info->mti_pill, &RMF_CAPA1, RCL_CLIENT))
288 mdt_set_capainfo(info, 0, &info->mti_body->mbo_fid1,
289 req_capsule_client_get(info->mti_pill, &RMF_CAPA1));
291 /* Non-root users are forbidden to set or clear flags which are
292 * NOT defined in HSM_USER_MASK. */
293 if (((hss->hss_setmask | hss->hss_clearmask) & ~HSM_USER_MASK) &&
294 !md_capable(mdt_ucred(info), CFS_CAP_SYS_ADMIN))
295 GOTO(out_unlock, rc = -EPERM);
297 /* Read current HSM info */
299 ma->ma_need = MA_HSM;
300 rc = mdt_attr_get_complex(info, obj, ma);
302 GOTO(out_unlock, rc);
304 /* Change HSM flags depending on provided masks */
305 if (hss->hss_valid & HSS_SETMASK)
306 ma->ma_hsm.mh_flags |= hss->hss_setmask;
307 if (hss->hss_valid & HSS_CLEARMASK)
308 ma->ma_hsm.mh_flags &= ~hss->hss_clearmask;
310 /* Change archive_id if provided. */
311 if (hss->hss_valid & HSS_ARCHIVE_ID) {
312 if (!(ma->ma_hsm.mh_flags & HS_EXISTS)) {
313 CDEBUG(D_HSM, "Could not set an archive number for "
314 DFID "if HSM EXISTS flag is not set.\n",
315 PFID(&info->mti_body->mbo_fid1));
316 GOTO(out_unlock, rc);
318 ma->ma_hsm.mh_arch_id = hss->hss_archive_id;
321 /* Check for inconsistant HSM flagset.
322 * DIRTY without EXISTS: no dirty if no archive was created.
323 * DIRTY and RELEASED: a dirty file could not be released.
324 * RELEASED without ARCHIVED: do not release a non-archived file.
325 * LOST without ARCHIVED: cannot lost a non-archived file.
327 flags = ma->ma_hsm.mh_flags;
328 if ((flags & HS_DIRTY && !(flags & HS_EXISTS)) ||
329 (flags & HS_RELEASED && flags & HS_DIRTY) ||
330 (flags & HS_RELEASED && !(flags & HS_ARCHIVED)) ||
331 (flags & HS_LOST && !(flags & HS_ARCHIVED))) {
332 CDEBUG(D_HSM, "Incompatible flag change on "DFID
334 PFID(&info->mti_body->mbo_fid1), flags);
335 GOTO(out_ucred, rc = -EINVAL);
338 /* Save the modified flags */
339 rc = mdt_hsm_attr_set(info, obj, &ma->ma_hsm);
341 GOTO(out_unlock, rc);
346 mdt_object_unlock(info, obj, lh, 1);
348 mdt_exit_ucred(info);
350 mdt_thread_info_fini(info);
355 * Retrieve undergoing HSM requests for the fid provided in RPC body.
356 * Current requests are read from coordinator states.
358 * This is MDS_HSM_ACTION RPC handler.
360 int mdt_hsm_action(struct tgt_session_info *tsi)
362 struct mdt_thread_info *info;
363 struct hsm_current_action *hca;
364 struct hsm_action_list *hal = NULL;
365 struct hsm_action_item *hai;
370 hca = req_capsule_server_get(tsi->tsi_pill,
371 &RMF_MDS_HSM_CURRENT_ACTION);
373 RETURN(err_serious(-EPROTO));
375 if (tsi->tsi_mdt_body == NULL)
378 info = tsi2mdt_info(tsi);
379 /* Only valid if client is remote */
380 rc = mdt_init_ucred(info, (struct mdt_body *)info->mti_body);
382 GOTO(out, rc = err_serious(rc));
384 if (req_capsule_get_size(tsi->tsi_pill, &RMF_CAPA1, RCL_CLIENT))
385 mdt_set_capainfo(info, 0, &info->mti_body->mbo_fid1,
386 req_capsule_client_get(info->mti_pill,
389 /* Coordinator information */
390 hal_size = sizeof(*hal) +
391 cfs_size_round(MTI_NAME_MAXLEN) /* fsname */ +
392 cfs_size_round(sizeof(*hai));
394 MDT_HSM_ALLOC(hal, hal_size);
396 GOTO(out_ucred, rc = -ENOMEM);
398 hal->hal_version = HAL_VERSION;
399 hal->hal_archive_id = 0;
401 obd_uuid2fsname(hal->hal_fsname, mdt_obd_name(info->mti_mdt),
404 hai = hai_first(hal);
405 hai->hai_action = HSMA_NONE;
408 hai->hai_fid = info->mti_body->mbo_fid1;
409 hai->hai_len = sizeof(*hai);
411 rc = mdt_hsm_get_actions(info, hal);
415 /* cookie is used to give back request status */
416 if (hai->hai_cookie == 0)
417 hca->hca_state = HPS_WAITING;
419 hca->hca_state = HPS_RUNNING;
421 switch (hai->hai_action) {
423 hca->hca_action = HUA_NONE;
426 hca->hca_action = HUA_ARCHIVE;
429 hca->hca_action = HUA_RESTORE;
432 hca->hca_action = HUA_REMOVE;
435 hca->hca_action = HUA_CANCEL;
438 hca->hca_action = HUA_NONE;
439 CERROR("%s: Unknown hsm action: %d on "DFID"\n",
440 mdt_obd_name(info->mti_mdt),
441 hai->hai_action, PFID(&hai->hai_fid));
445 hca->hca_location = hai->hai_extent;
449 MDT_HSM_FREE(hal, hal_size);
451 mdt_exit_ucred(info);
453 mdt_thread_info_fini(info);
458 * Process the HSM actions described in a struct hsm_user_request.
460 * The action described in hur will be send to coordinator to be saved and
461 * processed later or either handled directly if hur.hur_action is HUA_RELEASE.
463 * This is MDS_HSM_REQUEST RPC handler.
465 int mdt_hsm_request(struct tgt_session_info *tsi)
467 struct mdt_thread_info *info;
468 struct req_capsule *pill = tsi->tsi_pill;
469 struct hsm_request *hr;
470 struct hsm_user_item *hui;
471 struct hsm_action_list *hal;
472 struct hsm_action_item *hai;
476 enum hsm_copytool_action action = HSMA_NONE;
481 hr = req_capsule_client_get(pill, &RMF_MDS_HSM_REQUEST);
482 hui = req_capsule_client_get(pill, &RMF_MDS_HSM_USER_ITEM);
483 data = req_capsule_client_get(pill, &RMF_GENERIC_DATA);
485 if (tsi->tsi_mdt_body == NULL || hr == NULL || hui == NULL || data == NULL)
488 /* Sanity check. Nothing to do with an empty list */
489 if (hr->hr_itemcount == 0)
492 hui_list_size = req_capsule_get_size(pill, &RMF_MDS_HSM_USER_ITEM,
494 if (hui_list_size < hr->hr_itemcount * sizeof(*hui))
497 data_size = req_capsule_get_size(pill, &RMF_GENERIC_DATA, RCL_CLIENT);
498 if (data_size != hr->hr_data_len)
501 info = tsi2mdt_info(tsi);
502 /* Only valid if client is remote */
503 rc = mdt_init_ucred(info, (struct mdt_body *)info->mti_body);
507 switch (hr->hr_action) {
508 /* code to be removed in hsm1_merge and final patch */
510 CERROR("Release action is not working in hsm1_coord\n");
511 GOTO(out_ucred, rc = -EINVAL);
513 /* end of code to be removed */
515 action = HSMA_ARCHIVE;
518 action = HSMA_RESTORE;
521 action = HSMA_REMOVE;
524 action = HSMA_CANCEL;
527 CERROR("Unknown hsm action: %d\n", hr->hr_action);
528 GOTO(out_ucred, rc = -EINVAL);
531 hal_size = sizeof(*hal) + cfs_size_round(MTI_NAME_MAXLEN) /* fsname */ +
532 (sizeof(*hai) + cfs_size_round(hr->hr_data_len)) *
535 MDT_HSM_ALLOC(hal, hal_size);
537 GOTO(out_ucred, rc = -ENOMEM);
539 hal->hal_version = HAL_VERSION;
540 hal->hal_archive_id = hr->hr_archive_id;
541 hal->hal_flags = hr->hr_flags;
542 obd_uuid2fsname(hal->hal_fsname, mdt_obd_name(info->mti_mdt),
545 hal->hal_count = hr->hr_itemcount;
546 hai = hai_first(hal);
547 for (i = 0; i < hr->hr_itemcount; i++, hai = hai_next(hai)) {
548 hai->hai_action = action;
551 hai->hai_fid = hui[i].hui_fid;
552 hai->hai_extent = hui[i].hui_extent;
553 memcpy(hai->hai_data, data, hr->hr_data_len);
554 hai->hai_len = sizeof(*hai) + hr->hr_data_len;
557 rc = mdt_hsm_add_actions(info, hal, &compound_id);
559 MDT_HSM_FREE(hal, hal_size);
564 mdt_exit_ucred(info);
566 mdt_thread_info_fini(info);