#include "obd_class.h"
#include "lustre/lustre_idl.h"
-#include "dt_object.h"
#define LOG_NAME_LIMIT(logname, name) \
snprintf(logname, sizeof(logname), "LOGS/%s", name)
/* llog.c - general API */
int llog_init_handle(const struct lu_env *env, struct llog_handle *handle,
int flags, struct obd_uuid *uuid);
-int llog_copy_handler(const struct lu_env *env, struct llog_handle *llh,
- struct llog_rec_hdr *rec, void *data);
int llog_process(const struct lu_env *env, struct llog_handle *loghandle,
llog_cb_t cb, void *data, void *catdata);
int llog_process_or_fork(const struct lu_env *env,
struct llog_handle *loghandle,
llog_cb_t cb, void *data, void *catdata, bool fork);
-int llog_reverse_process(const struct lu_env *env,
- struct llog_handle *loghandle, llog_cb_t cb,
- void *data, void *catdata);
-int llog_cancel_rec(const struct lu_env *env, struct llog_handle *loghandle,
- int index);
int llog_open(const struct lu_env *env, struct llog_ctxt *ctxt,
struct llog_handle **lgh, struct llog_logid *logid,
char *name, enum llog_open_param open_param);
int llog_close(const struct lu_env *env, struct llog_handle *cathandle);
-int llog_is_empty(const struct lu_env *env, struct llog_ctxt *ctxt,
- char *name);
int llog_backup(const struct lu_env *env, struct obd_device *obd,
struct llog_ctxt *ctxt, struct llog_ctxt *bak_ctxt,
char *name, char *backup);
int lpcd_last_idx;
};
+struct thandle;
+
int llog_cat_close(const struct lu_env *env, struct llog_handle *cathandle);
-int llog_cat_add_rec(const struct lu_env *env, struct llog_handle *cathandle,
- struct llog_rec_hdr *rec, struct llog_cookie *reccookie,
- void *buf, struct thandle *th);
-int llog_cat_declare_add_rec(const struct lu_env *env,
- struct llog_handle *cathandle,
- struct llog_rec_hdr *rec, struct thandle *th);
-int llog_cat_add(const struct lu_env *env, struct llog_handle *cathandle,
- struct llog_rec_hdr *rec, struct llog_cookie *reccookie,
- void *buf);
-int llog_cat_cancel_records(const struct lu_env *env,
- struct llog_handle *cathandle, int count,
- struct llog_cookie *cookies);
int llog_cat_process_or_fork(const struct lu_env *env,
struct llog_handle *cat_llh, llog_cb_t cb,
void *data, int startcat, int startidx, bool fork);
int llog_cat_process(const struct lu_env *env, struct llog_handle *cat_llh,
llog_cb_t cb, void *data, int startcat, int startidx);
-int llog_cat_reverse_process(const struct lu_env *env,
- struct llog_handle *cat_llh, llog_cb_t cb,
- void *data);
-int llog_cat_init_and_process(const struct lu_env *env,
- struct llog_handle *llh);
/* llog_obd.c */
int llog_setup(const struct lu_env *env, struct obd_device *obd,
struct obd_device *disk_obd, struct llog_operations *op);
int __llog_ctxt_put(const struct lu_env *env, struct llog_ctxt *ctxt);
int llog_cleanup(const struct lu_env *env, struct llog_ctxt *);
-int llog_sync(struct llog_ctxt *ctxt, struct obd_export *exp, int flags);
-int llog_cancel(const struct lu_env *env, struct llog_ctxt *ctxt,
- struct llog_cookie *cookies, int flags);
/* llog_net.c */
int llog_initiator_connect(struct llog_ctxt *ctxt);
struct llog_operations {
- int (*lop_destroy)(const struct lu_env *env,
- struct llog_handle *handle);
int (*lop_next_block)(const struct lu_env *env, struct llog_handle *h,
int *curr_idx, int next_idx, __u64 *offset,
void *buf, int len);
int (*lop_declare_create)(const struct lu_env *env,
struct llog_handle *handle,
struct thandle *th);
- int (*lop_create)(const struct lu_env *env, struct llog_handle *handle,
- struct thandle *th);
/**
* write new record in llog. It appends records usually but can edit
* existing records too.
spinlock_t lgh_hdr_lock; /* protect lgh_hdr data */
struct llog_logid lgh_id; /* id of this log */
struct llog_log_hdr *lgh_hdr;
- struct file *lgh_file;
- struct dt_object *lgh_obj;
int lgh_last_idx;
int lgh_cur_idx; /* used during llog_process */
__u64 lgh_cur_offset; /* used during llog_process */
struct mutex loc_mutex; /* protect loc_imp */
atomic_t loc_refcount;
long loc_flags; /* flags, see above defines */
- struct dt_object *loc_dir;
};
#define LLOG_PROC_BREAK 0x0001
return llog_group_ctxt_null(&obd->obd_olg, index);
}
-static inline int llog_destroy(const struct lu_env *env,
- struct llog_handle *handle)
-{
- struct llog_operations *lop;
- int rc;
-
- rc = llog_handle2ops(handle, &lop);
- if (rc)
- return rc;
- if (lop->lop_destroy == NULL)
- return -EOPNOTSUPP;
-
- rc = lop->lop_destroy(env, handle);
- return rc;
-}
-
static inline int llog_next_block(const struct lu_env *env,
struct llog_handle *loghandle, int *cur_idx,
int next_idx, __u64 *cur_offset, void *buf,
}
/* llog.c */
-int llog_exist(struct llog_handle *loghandle);
-int llog_declare_create(const struct lu_env *env,
- struct llog_handle *loghandle, struct thandle *th);
-int llog_create(const struct lu_env *env, struct llog_handle *handle,
- struct thandle *th);
int llog_declare_write_rec(const struct lu_env *env,
struct llog_handle *handle,
struct llog_rec_hdr *rec, int idx,
int llog_write_rec(const struct lu_env *env, struct llog_handle *handle,
struct llog_rec_hdr *rec, struct llog_cookie *logcookies,
int numcookies, void *buf, int idx, struct thandle *th);
-int llog_add(const struct lu_env *env, struct llog_handle *lgh,
- struct llog_rec_hdr *rec, struct llog_cookie *logcookies,
- void *buf, struct thandle *th);
-int llog_declare_add(const struct lu_env *env, struct llog_handle *lgh,
- struct llog_rec_hdr *rec, struct thandle *th);
int lustre_process_log(struct super_block *sb, char *logname,
struct config_llog_instance *cfg);
int lustre_end_log(struct super_block *sb, char *logname,
struct config_llog_instance *cfg);
-int llog_open_create(const struct lu_env *env, struct llog_ctxt *ctxt,
- struct llog_handle **res, struct llog_logid *logid,
- char *name);
-int llog_erase(const struct lu_env *env, struct llog_ctxt *ctxt,
- struct llog_logid *logid, char *name);
-int llog_write(const struct lu_env *env, struct llog_handle *loghandle,
- struct llog_rec_hdr *rec, struct llog_cookie *reccookie,
- int cookiecount, void *buf, int idx);
-
/** @} log */
#endif
llog_free_handle(loghandle);
}
-/* returns negative on error; 0 if success; 1 if success & log destroyed */
-int llog_cancel_rec(const struct lu_env *env, struct llog_handle *loghandle,
- int index)
-{
- struct llog_log_hdr *llh = loghandle->lgh_hdr;
- int rc = 0;
-
- CDEBUG(D_RPCTRACE, "Canceling %d in log "DOSTID"\n",
- index, POSTID(&loghandle->lgh_id.lgl_oi));
-
- if (index == 0) {
- CERROR("Can't cancel index 0 which is header\n");
- return -EINVAL;
- }
-
- spin_lock(&loghandle->lgh_hdr_lock);
- if (!ext2_clear_bit(index, llh->llh_bitmap)) {
- spin_unlock(&loghandle->lgh_hdr_lock);
- CDEBUG(D_RPCTRACE, "Catalog index %u already clear?\n", index);
- return -ENOENT;
- }
-
- llh->llh_count--;
-
- if ((llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
- (llh->llh_count == 1) &&
- (loghandle->lgh_last_idx == (LLOG_BITMAP_BYTES * 8) - 1)) {
- spin_unlock(&loghandle->lgh_hdr_lock);
- rc = llog_destroy(env, loghandle);
- if (rc < 0) {
- CERROR("%s: can't destroy empty llog #"DOSTID
- "#%08x: rc = %d\n",
- loghandle->lgh_ctxt->loc_obd->obd_name,
- POSTID(&loghandle->lgh_id.lgl_oi),
- loghandle->lgh_id.lgl_ogen, rc);
- goto out_err;
- }
- return 1;
- }
- spin_unlock(&loghandle->lgh_hdr_lock);
-
- rc = llog_write(env, loghandle, &llh->llh_hdr, NULL, 0, NULL, 0);
- if (rc < 0) {
- CERROR("%s: fail to write header for llog #"DOSTID
- "#%08x: rc = %d\n",
- loghandle->lgh_ctxt->loc_obd->obd_name,
- POSTID(&loghandle->lgh_id.lgl_oi),
- loghandle->lgh_id.lgl_ogen, rc);
- goto out_err;
- }
- return 0;
-out_err:
- spin_lock(&loghandle->lgh_hdr_lock);
- ext2_set_bit(index, llh->llh_bitmap);
- llh->llh_count++;
- spin_unlock(&loghandle->lgh_hdr_lock);
- return rc;
-}
-EXPORT_SYMBOL(llog_cancel_rec);
-
static int llog_read_header(const struct lu_env *env,
struct llog_handle *handle,
struct obd_uuid *uuid)
rc = lpi->lpi_cb(lpi->lpi_env, loghandle, rec,
lpi->lpi_cbdata);
last_called_index = index;
- if (rc == LLOG_PROC_BREAK) {
- goto out;
- } else if (rc == LLOG_DEL_RECORD) {
- llog_cancel_rec(lpi->lpi_env,
- loghandle,
- rec->lrh_index);
- rc = 0;
- }
if (rc)
goto out;
} else {
}
EXPORT_SYMBOL(llog_process);
-int llog_reverse_process(const struct lu_env *env,
- struct llog_handle *loghandle, llog_cb_t cb,
- void *data, void *catdata)
-{
- struct llog_log_hdr *llh = loghandle->lgh_hdr;
- struct llog_process_cat_data *cd = catdata;
- void *buf;
- int rc = 0, first_index = 1, index, idx;
-
- buf = kzalloc(LLOG_CHUNK_SIZE, GFP_NOFS);
- if (!buf)
- return -ENOMEM;
-
- if (cd != NULL)
- first_index = cd->lpcd_first_idx + 1;
- if (cd != NULL && cd->lpcd_last_idx)
- index = cd->lpcd_last_idx;
- else
- index = LLOG_BITMAP_BYTES * 8 - 1;
-
- while (rc == 0) {
- struct llog_rec_hdr *rec;
- struct llog_rec_tail *tail;
-
- /* skip records not set in bitmap */
- while (index >= first_index &&
- !ext2_test_bit(index, llh->llh_bitmap))
- --index;
-
- LASSERT(index >= first_index - 1);
- if (index == first_index - 1)
- break;
-
- /* get the buf with our target record; avoid old garbage */
- memset(buf, 0, LLOG_CHUNK_SIZE);
- rc = llog_prev_block(env, loghandle, index, buf,
- LLOG_CHUNK_SIZE);
- if (rc)
- goto out;
-
- rec = buf;
- idx = rec->lrh_index;
- CDEBUG(D_RPCTRACE, "index %u : idx %u\n", index, idx);
- while (idx < index) {
- rec = (void *)rec + rec->lrh_len;
- if (LLOG_REC_HDR_NEEDS_SWABBING(rec))
- lustre_swab_llog_rec(rec);
- idx++;
- }
- LASSERT(idx == index);
- tail = (void *)rec + rec->lrh_len - sizeof(*tail);
-
- /* process records in buffer, starting where we found one */
- while ((void *)tail > buf) {
- if (tail->lrt_index == 0) {
- /* no more records */
- rc = 0;
- goto out;
- }
-
- /* if set, process the callback on this record */
- if (ext2_test_bit(index, llh->llh_bitmap)) {
- rec = (void *)tail - tail->lrt_len +
- sizeof(*tail);
-
- rc = cb(env, loghandle, rec, data);
- if (rc == LLOG_PROC_BREAK) {
- goto out;
- } else if (rc == LLOG_DEL_RECORD) {
- llog_cancel_rec(env, loghandle,
- tail->lrt_index);
- rc = 0;
- }
- if (rc)
- goto out;
- }
-
- /* previous record, still in buffer? */
- --index;
- if (index < first_index) {
- rc = 0;
- goto out;
- }
- tail = (void *)tail - tail->lrt_len;
- }
- }
-
-out:
- kfree(buf);
- return rc;
-}
-EXPORT_SYMBOL(llog_reverse_process);
-
-/**
- * new llog API
- *
- * API functions:
- * llog_open - open llog, may not exist
- * llog_exist - check if llog exists
- * llog_close - close opened llog, pair for open, frees llog_handle
- * llog_declare_create - declare llog creation
- * llog_create - create new llog on disk, need transaction handle
- * llog_declare_write_rec - declaration of llog write
- * llog_write_rec - write llog record on disk, need transaction handle
- * llog_declare_add - declare llog catalog record addition
- * llog_add - add llog record in catalog, need transaction handle
- */
-int llog_exist(struct llog_handle *loghandle)
-{
- struct llog_operations *lop;
- int rc;
-
- rc = llog_handle2ops(loghandle, &lop);
- if (rc)
- return rc;
- if (lop->lop_exist == NULL)
- return -EOPNOTSUPP;
-
- rc = lop->lop_exist(loghandle);
- return rc;
-}
-EXPORT_SYMBOL(llog_exist);
-
-int llog_declare_create(const struct lu_env *env,
- struct llog_handle *loghandle, struct thandle *th)
-{
- struct llog_operations *lop;
- int raised, rc;
-
- rc = llog_handle2ops(loghandle, &lop);
- if (rc)
- return rc;
- if (lop->lop_declare_create == NULL)
- return -EOPNOTSUPP;
-
- raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
- if (!raised)
- cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
- rc = lop->lop_declare_create(env, loghandle, th);
- if (!raised)
- cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
- return rc;
-}
-EXPORT_SYMBOL(llog_declare_create);
-
-int llog_create(const struct lu_env *env, struct llog_handle *handle,
- struct thandle *th)
-{
- struct llog_operations *lop;
- int raised, rc;
-
- rc = llog_handle2ops(handle, &lop);
- if (rc)
- return rc;
- if (lop->lop_create == NULL)
- return -EOPNOTSUPP;
-
- raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
- if (!raised)
- cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
- rc = lop->lop_create(env, handle, th);
- if (!raised)
- cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
- return rc;
-}
-EXPORT_SYMBOL(llog_create);
-
-int llog_declare_write_rec(const struct lu_env *env,
- struct llog_handle *handle,
- struct llog_rec_hdr *rec, int idx,
- struct thandle *th)
-{
- struct llog_operations *lop;
- int raised, rc;
-
- rc = llog_handle2ops(handle, &lop);
- if (rc)
- return rc;
- LASSERT(lop);
- if (lop->lop_declare_write_rec == NULL)
- return -EOPNOTSUPP;
-
- raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
- if (!raised)
- cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
- rc = lop->lop_declare_write_rec(env, handle, rec, idx, th);
- if (!raised)
- cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
- return rc;
-}
-EXPORT_SYMBOL(llog_declare_write_rec);
-
-int llog_write_rec(const struct lu_env *env, struct llog_handle *handle,
- struct llog_rec_hdr *rec, struct llog_cookie *logcookies,
- int numcookies, void *buf, int idx, struct thandle *th)
-{
- struct llog_operations *lop;
- int raised, rc, buflen;
-
- rc = llog_handle2ops(handle, &lop);
- if (rc)
- return rc;
-
- LASSERT(lop);
- if (lop->lop_write_rec == NULL)
- return -EOPNOTSUPP;
-
- if (buf)
- buflen = rec->lrh_len + sizeof(struct llog_rec_hdr) +
- sizeof(struct llog_rec_tail);
- else
- buflen = rec->lrh_len;
- LASSERT(cfs_size_round(buflen) == buflen);
-
- raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
- if (!raised)
- cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
- rc = lop->lop_write_rec(env, handle, rec, logcookies, numcookies,
- buf, idx, th);
- if (!raised)
- cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
- return rc;
-}
-EXPORT_SYMBOL(llog_write_rec);
-
-int llog_add(const struct lu_env *env, struct llog_handle *lgh,
- struct llog_rec_hdr *rec, struct llog_cookie *logcookies,
- void *buf, struct thandle *th)
-{
- int raised, rc;
-
- if (lgh->lgh_logops->lop_add == NULL)
- return -EOPNOTSUPP;
-
- raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
- if (!raised)
- cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
- rc = lgh->lgh_logops->lop_add(env, lgh, rec, logcookies, buf, th);
- if (!raised)
- cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
- return rc;
-}
-EXPORT_SYMBOL(llog_add);
-
-int llog_declare_add(const struct lu_env *env, struct llog_handle *lgh,
- struct llog_rec_hdr *rec, struct thandle *th)
-{
- int raised, rc;
-
- if (lgh->lgh_logops->lop_declare_add == NULL)
- return -EOPNOTSUPP;
-
- raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
- if (!raised)
- cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
- rc = lgh->lgh_logops->lop_declare_add(env, lgh, rec, th);
- if (!raised)
- cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
- return rc;
-}
-EXPORT_SYMBOL(llog_declare_add);
-
-/**
- * Helper function to open llog or create it if doesn't exist.
- * It hides all transaction handling from caller.
- */
-int llog_open_create(const struct lu_env *env, struct llog_ctxt *ctxt,
- struct llog_handle **res, struct llog_logid *logid,
- char *name)
-{
- struct dt_device *d;
- struct thandle *th;
- int rc;
-
- rc = llog_open(env, ctxt, res, logid, name, LLOG_OPEN_NEW);
- if (rc)
- return rc;
-
- if (llog_exist(*res))
- return 0;
-
- LASSERT((*res)->lgh_obj != NULL);
-
- d = lu2dt_dev((*res)->lgh_obj->do_lu.lo_dev);
-
- th = dt_trans_create(env, d);
- if (IS_ERR(th)) {
- rc = PTR_ERR(th);
- goto out;
- }
-
- rc = llog_declare_create(env, *res, th);
- if (rc == 0) {
- rc = dt_trans_start_local(env, d, th);
- if (rc == 0)
- rc = llog_create(env, *res, th);
- }
- dt_trans_stop(env, d, th);
-out:
- if (rc)
- llog_close(env, *res);
- return rc;
-}
-EXPORT_SYMBOL(llog_open_create);
-
-/**
- * Helper function to delete existent llog.
- */
-int llog_erase(const struct lu_env *env, struct llog_ctxt *ctxt,
- struct llog_logid *logid, char *name)
-{
- struct llog_handle *handle;
- int rc = 0, rc2;
-
- /* nothing to erase */
- if (name == NULL && logid == NULL)
- return 0;
-
- rc = llog_open(env, ctxt, &handle, logid, name, LLOG_OPEN_EXISTS);
- if (rc < 0)
- return rc;
-
- rc = llog_init_handle(env, handle, LLOG_F_IS_PLAIN, NULL);
- if (rc == 0)
- rc = llog_destroy(env, handle);
-
- rc2 = llog_close(env, handle);
- if (rc == 0)
- rc = rc2;
- return rc;
-}
-EXPORT_SYMBOL(llog_erase);
-
-/*
- * Helper function for write record in llog.
- * It hides all transaction handling from caller.
- * Valid only with local llog.
- */
-int llog_write(const struct lu_env *env, struct llog_handle *loghandle,
- struct llog_rec_hdr *rec, struct llog_cookie *reccookie,
- int cookiecount, void *buf, int idx)
-{
- struct dt_device *dt;
- struct thandle *th;
- int rc;
-
- LASSERT(loghandle);
- LASSERT(loghandle->lgh_ctxt);
- LASSERT(loghandle->lgh_obj != NULL);
-
- dt = lu2dt_dev(loghandle->lgh_obj->do_lu.lo_dev);
-
- th = dt_trans_create(env, dt);
- if (IS_ERR(th))
- return PTR_ERR(th);
-
- rc = llog_declare_write_rec(env, loghandle, rec, idx, th);
- if (rc)
- goto out_trans;
-
- rc = dt_trans_start_local(env, dt, th);
- if (rc)
- goto out_trans;
-
- down_write(&loghandle->lgh_lock);
- rc = llog_write_rec(env, loghandle, rec, reccookie,
- cookiecount, buf, idx, th);
- up_write(&loghandle->lgh_lock);
-out_trans:
- dt_trans_stop(env, dt, th);
- return rc;
-}
-EXPORT_SYMBOL(llog_write);
-
int llog_open(const struct lu_env *env, struct llog_ctxt *ctxt,
struct llog_handle **lgh, struct llog_logid *logid,
char *name, enum llog_open_param open_param)
return rc;
}
EXPORT_SYMBOL(llog_close);
-
-int llog_is_empty(const struct lu_env *env, struct llog_ctxt *ctxt,
- char *name)
-{
- struct llog_handle *llh;
- int rc;
-
- rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
- if (rc < 0) {
- if (likely(rc == -ENOENT))
- rc = 0;
- goto out;
- }
-
- rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
- if (rc)
- goto out_close;
- rc = llog_get_size(llh);
-
-out_close:
- llog_close(env, llh);
-out:
- /* header is record 1 */
- return rc <= 1;
-}
-EXPORT_SYMBOL(llog_is_empty);
-
-int llog_copy_handler(const struct lu_env *env, struct llog_handle *llh,
- struct llog_rec_hdr *rec, void *data)
-{
- struct llog_handle *copy_llh = data;
-
- /* Append all records */
- return llog_write(env, copy_llh, rec, NULL, 0, NULL, -1);
-}
-EXPORT_SYMBOL(llog_copy_handler);
-
-/* backup plain llog */
-int llog_backup(const struct lu_env *env, struct obd_device *obd,
- struct llog_ctxt *ctxt, struct llog_ctxt *bctxt,
- char *name, char *backup)
-{
- struct llog_handle *llh, *bllh;
- int rc;
-
-
-
- /* open original log */
- rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
- if (rc < 0) {
- /* the -ENOENT case is also reported to the caller
- * but silently so it should handle that if needed.
- */
- if (rc != -ENOENT)
- CERROR("%s: failed to open log %s: rc = %d\n",
- obd->obd_name, name, rc);
- return rc;
- }
-
- rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
- if (rc)
- goto out_close;
-
- /* Make sure there's no old backup log */
- rc = llog_erase(env, bctxt, NULL, backup);
- if (rc < 0 && rc != -ENOENT)
- goto out_close;
-
- /* open backup log */
- rc = llog_open_create(env, bctxt, &bllh, NULL, backup);
- if (rc) {
- CERROR("%s: failed to open backup logfile %s: rc = %d\n",
- obd->obd_name, backup, rc);
- goto out_close;
- }
-
- /* check that backup llog is not the same object as original one */
- if (llh->lgh_obj == bllh->lgh_obj) {
- CERROR("%s: backup llog %s to itself (%s), objects %p/%p\n",
- obd->obd_name, name, backup, llh->lgh_obj,
- bllh->lgh_obj);
- rc = -EEXIST;
- goto out_backup;
- }
-
- rc = llog_init_handle(env, bllh, LLOG_F_IS_PLAIN, NULL);
- if (rc)
- goto out_backup;
-
- /* Copy log record by record */
- rc = llog_process_or_fork(env, llh, llog_copy_handler, (void *)bllh,
- NULL, false);
- if (rc)
- CERROR("%s: failed to backup log %s: rc = %d\n",
- obd->obd_name, name, rc);
-out_backup:
- llog_close(env, bllh);
-out_close:
- llog_close(env, llh);
- return rc;
-}
-EXPORT_SYMBOL(llog_backup);
#include "llog_internal.h"
-/* Create a new log handle and add it to the open list.
- * This log handle will be closed when all of the records in it are removed.
- *
- * Assumes caller has already pushed us into the kernel context and is locking.
- */
-static int llog_cat_new_log(const struct lu_env *env,
- struct llog_handle *cathandle,
- struct llog_handle *loghandle,
- struct thandle *th)
-{
-
- struct llog_log_hdr *llh;
- struct llog_logid_rec rec = { { 0 }, };
- int rc, index, bitmap_size;
-
- llh = cathandle->lgh_hdr;
- bitmap_size = LLOG_BITMAP_SIZE(llh);
-
- index = (cathandle->lgh_last_idx + 1) % bitmap_size;
-
- /* maximum number of available slots in catlog is bitmap_size - 2 */
- if (llh->llh_cat_idx == index) {
- CERROR("no free catalog slots for log...\n");
- return -ENOSPC;
- }
-
- if (OBD_FAIL_CHECK(OBD_FAIL_MDS_LLOG_CREATE_FAILED))
- return -ENOSPC;
-
- rc = llog_create(env, loghandle, th);
- /* if llog is already created, no need to initialize it */
- if (rc == -EEXIST) {
- return 0;
- } else if (rc != 0) {
- CERROR("%s: can't create new plain llog in catalog: rc = %d\n",
- loghandle->lgh_ctxt->loc_obd->obd_name, rc);
- return rc;
- }
-
- rc = llog_init_handle(env, loghandle,
- LLOG_F_IS_PLAIN | LLOG_F_ZAP_WHEN_EMPTY,
- &cathandle->lgh_hdr->llh_tgtuuid);
- if (rc)
- goto out_destroy;
-
- if (index == 0)
- index = 1;
-
- spin_lock(&loghandle->lgh_hdr_lock);
- llh->llh_count++;
- if (ext2_set_bit(index, llh->llh_bitmap)) {
- CERROR("argh, index %u already set in log bitmap?\n",
- index);
- spin_unlock(&loghandle->lgh_hdr_lock);
- LBUG(); /* should never happen */
- }
- spin_unlock(&loghandle->lgh_hdr_lock);
-
- cathandle->lgh_last_idx = index;
- llh->llh_tail.lrt_index = index;
-
- CDEBUG(D_RPCTRACE,
- "new recovery log "DOSTID":%x for index %u of catalog"
- DOSTID"\n", POSTID(&loghandle->lgh_id.lgl_oi),
- loghandle->lgh_id.lgl_ogen, index,
- POSTID(&cathandle->lgh_id.lgl_oi));
- /* build the record for this log in the catalog */
- rec.lid_hdr.lrh_len = sizeof(rec);
- rec.lid_hdr.lrh_index = index;
- rec.lid_hdr.lrh_type = LLOG_LOGID_MAGIC;
- rec.lid_id = loghandle->lgh_id;
- rec.lid_tail.lrt_len = sizeof(rec);
- rec.lid_tail.lrt_index = index;
-
- /* update the catalog: header and record */
- rc = llog_write_rec(env, cathandle, &rec.lid_hdr,
- &loghandle->u.phd.phd_cookie, 1, NULL, index, th);
- if (rc < 0)
- goto out_destroy;
-
- loghandle->lgh_hdr->llh_cat_idx = index;
- return 0;
-out_destroy:
- llog_destroy(env, loghandle);
- return rc;
-}
-
/* Open an existent log handle and add it to the open list.
* This log handle will be closed when all of the records in it are removed.
*
list_for_each_entry_safe(loghandle, n, &cathandle->u.chd.chd_head,
u.phd.phd_entry) {
- struct llog_log_hdr *llh = loghandle->lgh_hdr;
- int index;
-
/* unlink open-not-created llogs */
list_del_init(&loghandle->u.phd.phd_entry);
- llh = loghandle->lgh_hdr;
- if (loghandle->lgh_obj != NULL && llh != NULL &&
- (llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
- (llh->llh_count == 1)) {
- rc = llog_destroy(env, loghandle);
- if (rc)
- CERROR("%s: failure destroying log during cleanup: rc = %d\n",
- loghandle->lgh_ctxt->loc_obd->obd_name,
- rc);
-
- index = loghandle->u.phd.phd_cookie.lgc_index;
- llog_cat_cleanup(env, cathandle, NULL, index);
- }
llog_close(env, loghandle);
}
/* if handle was stored in ctxt, remove it too */
}
EXPORT_SYMBOL(llog_cat_close);
-/**
- * lockdep markers for nested struct llog_handle::lgh_lock locking.
- */
-enum {
- LLOGH_CAT,
- LLOGH_LOG
-};
-
-/** Return the currently active log handle. If the current log handle doesn't
- * have enough space left for the current record, start a new one.
- *
- * If reclen is 0, we only want to know what the currently active log is,
- * otherwise we get a lock on this log so nobody can steal our space.
- *
- * Assumes caller has already pushed us into the kernel context and is locking.
- *
- * NOTE: loghandle is write-locked upon successful return
- */
-static struct llog_handle *llog_cat_current_log(struct llog_handle *cathandle,
- struct thandle *th)
-{
- struct llog_handle *loghandle = NULL;
-
- down_read_nested(&cathandle->lgh_lock, LLOGH_CAT);
- loghandle = cathandle->u.chd.chd_current_log;
- if (loghandle) {
- struct llog_log_hdr *llh;
-
- down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
- llh = loghandle->lgh_hdr;
- if (llh == NULL ||
- loghandle->lgh_last_idx < LLOG_BITMAP_SIZE(llh) - 1) {
- up_read(&cathandle->lgh_lock);
- return loghandle;
- }
- up_write(&loghandle->lgh_lock);
- }
- up_read(&cathandle->lgh_lock);
-
- /* time to use next log */
-
- /* first, we have to make sure the state hasn't changed */
- down_write_nested(&cathandle->lgh_lock, LLOGH_CAT);
- loghandle = cathandle->u.chd.chd_current_log;
- if (loghandle) {
- struct llog_log_hdr *llh;
-
- down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
- llh = loghandle->lgh_hdr;
- LASSERT(llh);
- if (loghandle->lgh_last_idx < LLOG_BITMAP_SIZE(llh) - 1) {
- up_write(&cathandle->lgh_lock);
- return loghandle;
- }
- up_write(&loghandle->lgh_lock);
- }
-
- CDEBUG(D_INODE, "use next log\n");
-
- loghandle = cathandle->u.chd.chd_next_log;
- cathandle->u.chd.chd_current_log = loghandle;
- cathandle->u.chd.chd_next_log = NULL;
- down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
- up_write(&cathandle->lgh_lock);
- LASSERT(loghandle);
- return loghandle;
-}
-
-/* Add a single record to the recovery log(s) using a catalog
- * Returns as llog_write_record
- *
- * Assumes caller has already pushed us into the kernel context.
- */
-int llog_cat_add_rec(const struct lu_env *env, struct llog_handle *cathandle,
- struct llog_rec_hdr *rec, struct llog_cookie *reccookie,
- void *buf, struct thandle *th)
-{
- struct llog_handle *loghandle;
- int rc;
-
- LASSERT(rec->lrh_len <= LLOG_CHUNK_SIZE);
- loghandle = llog_cat_current_log(cathandle, th);
- LASSERT(!IS_ERR(loghandle));
-
- /* loghandle is already locked by llog_cat_current_log() for us */
- if (!llog_exist(loghandle)) {
- rc = llog_cat_new_log(env, cathandle, loghandle, th);
- if (rc < 0) {
- up_write(&loghandle->lgh_lock);
- return rc;
- }
- }
- /* now let's try to add the record */
- rc = llog_write_rec(env, loghandle, rec, reccookie, 1, buf, -1, th);
- if (rc < 0)
- CDEBUG_LIMIT(rc == -ENOSPC ? D_HA : D_ERROR,
- "llog_write_rec %d: lh=%p\n", rc, loghandle);
- up_write(&loghandle->lgh_lock);
- if (rc == -ENOSPC) {
- /* try to use next log */
- loghandle = llog_cat_current_log(cathandle, th);
- LASSERT(!IS_ERR(loghandle));
- /* new llog can be created concurrently */
- if (!llog_exist(loghandle)) {
- rc = llog_cat_new_log(env, cathandle, loghandle, th);
- if (rc < 0) {
- up_write(&loghandle->lgh_lock);
- return rc;
- }
- }
- /* now let's try to add the record */
- rc = llog_write_rec(env, loghandle, rec, reccookie, 1, buf,
- -1, th);
- if (rc < 0)
- CERROR("llog_write_rec %d: lh=%p\n", rc, loghandle);
- up_write(&loghandle->lgh_lock);
- }
-
- return rc;
-}
-EXPORT_SYMBOL(llog_cat_add_rec);
-
-int llog_cat_declare_add_rec(const struct lu_env *env,
- struct llog_handle *cathandle,
- struct llog_rec_hdr *rec, struct thandle *th)
-{
- struct llog_handle *loghandle, *next;
- int rc = 0;
-
- if (cathandle->u.chd.chd_current_log == NULL) {
- /* declare new plain llog */
- down_write(&cathandle->lgh_lock);
- if (cathandle->u.chd.chd_current_log == NULL) {
- rc = llog_open(env, cathandle->lgh_ctxt, &loghandle,
- NULL, NULL, LLOG_OPEN_NEW);
- if (rc == 0) {
- cathandle->u.chd.chd_current_log = loghandle;
- list_add_tail(&loghandle->u.phd.phd_entry,
- &cathandle->u.chd.chd_head);
- }
- }
- up_write(&cathandle->lgh_lock);
- } else if (cathandle->u.chd.chd_next_log == NULL) {
- /* declare next plain llog */
- down_write(&cathandle->lgh_lock);
- if (cathandle->u.chd.chd_next_log == NULL) {
- rc = llog_open(env, cathandle->lgh_ctxt, &loghandle,
- NULL, NULL, LLOG_OPEN_NEW);
- if (rc == 0) {
- cathandle->u.chd.chd_next_log = loghandle;
- list_add_tail(&loghandle->u.phd.phd_entry,
- &cathandle->u.chd.chd_head);
- }
- }
- up_write(&cathandle->lgh_lock);
- }
- if (rc)
- goto out;
-
- if (!llog_exist(cathandle->u.chd.chd_current_log)) {
- rc = llog_declare_create(env, cathandle->u.chd.chd_current_log,
- th);
- if (rc)
- goto out;
- llog_declare_write_rec(env, cathandle, NULL, -1, th);
- }
- /* declare records in the llogs */
- rc = llog_declare_write_rec(env, cathandle->u.chd.chd_current_log,
- rec, -1, th);
- if (rc)
- goto out;
-
- next = cathandle->u.chd.chd_next_log;
- if (next) {
- if (!llog_exist(next)) {
- rc = llog_declare_create(env, next, th);
- llog_declare_write_rec(env, cathandle, NULL, -1, th);
- }
- llog_declare_write_rec(env, next, rec, -1, th);
- }
-out:
- return rc;
-}
-EXPORT_SYMBOL(llog_cat_declare_add_rec);
-
-int llog_cat_add(const struct lu_env *env, struct llog_handle *cathandle,
- struct llog_rec_hdr *rec, struct llog_cookie *reccookie,
- void *buf)
-{
- struct llog_ctxt *ctxt;
- struct dt_device *dt;
- struct thandle *th = NULL;
- int rc;
-
- ctxt = cathandle->lgh_ctxt;
- LASSERT(ctxt);
- LASSERT(ctxt->loc_exp);
-
- if (cathandle->lgh_obj != NULL) {
- dt = ctxt->loc_exp->exp_obd->obd_lvfs_ctxt.dt;
- LASSERT(dt);
-
- th = dt_trans_create(env, dt);
- if (IS_ERR(th))
- return PTR_ERR(th);
-
- rc = llog_cat_declare_add_rec(env, cathandle, rec, th);
- if (rc)
- goto out_trans;
-
- rc = dt_trans_start_local(env, dt, th);
- if (rc)
- goto out_trans;
- rc = llog_cat_add_rec(env, cathandle, rec, reccookie, buf, th);
-out_trans:
- dt_trans_stop(env, dt, th);
- } else { /* lvfs compat code */
- LASSERT(cathandle->lgh_file != NULL);
- rc = llog_cat_declare_add_rec(env, cathandle, rec, th);
- if (rc == 0)
- rc = llog_cat_add_rec(env, cathandle, rec, reccookie,
- buf, th);
- }
- return rc;
-}
-EXPORT_SYMBOL(llog_cat_add);
-
-/* For each cookie in the cookie array, we clear the log in-use bit and either:
- * - the log is empty, so mark it free in the catalog header and delete it
- * - the log is not empty, just write out the log header
- *
- * The cookies may be in different log files, so we need to get new logs
- * each time.
- *
- * Assumes caller has already pushed us into the kernel context.
- */
-int llog_cat_cancel_records(const struct lu_env *env,
- struct llog_handle *cathandle, int count,
- struct llog_cookie *cookies)
-{
- int i, index, rc = 0, failed = 0;
-
- for (i = 0; i < count; i++, cookies++) {
- struct llog_handle *loghandle;
- struct llog_logid *lgl = &cookies->lgc_lgl;
- int lrc;
-
- rc = llog_cat_id2handle(env, cathandle, &loghandle, lgl);
- if (rc) {
- CERROR("%s: cannot find handle for llog "DOSTID": %d\n",
- cathandle->lgh_ctxt->loc_obd->obd_name,
- POSTID(&lgl->lgl_oi), rc);
- failed++;
- continue;
- }
-
- lrc = llog_cancel_rec(env, loghandle, cookies->lgc_index);
- if (lrc == 1) { /* log has been destroyed */
- index = loghandle->u.phd.phd_cookie.lgc_index;
- rc = llog_cat_cleanup(env, cathandle, loghandle,
- index);
- } else if (lrc == -ENOENT) {
- if (rc == 0) /* ENOENT shouldn't rewrite any error */
- rc = lrc;
- } else if (lrc < 0) {
- failed++;
- rc = lrc;
- }
- llog_handle_put(loghandle);
- }
- if (rc)
- CERROR("%s: fail to cancel %d of %d llog-records: rc = %d\n",
- cathandle->lgh_ctxt->loc_obd->obd_name, failed, count,
- rc);
-
- return rc;
-}
-EXPORT_SYMBOL(llog_cat_cancel_records);
-
static int llog_cat_process_cb(const struct lu_env *env,
struct llog_handle *cat_llh,
struct llog_rec_hdr *rec, void *data)
startidx, false);
}
EXPORT_SYMBOL(llog_cat_process);
-
-static int llog_cat_reverse_process_cb(const struct lu_env *env,
- struct llog_handle *cat_llh,
- struct llog_rec_hdr *rec, void *data)
-{
- struct llog_process_data *d = data;
- struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
- struct llog_handle *llh;
- int rc;
-
- if (le32_to_cpu(rec->lrh_type) != LLOG_LOGID_MAGIC) {
- CERROR("invalid record in catalog\n");
- return -EINVAL;
- }
- CDEBUG(D_HA, "processing log "DOSTID":%x at index %u of catalog "
- DOSTID"\n", POSTID(&lir->lid_id.lgl_oi), lir->lid_id.lgl_ogen,
- le32_to_cpu(rec->lrh_index), POSTID(&cat_llh->lgh_id.lgl_oi));
-
- rc = llog_cat_id2handle(env, cat_llh, &llh, &lir->lid_id);
- if (rc) {
- CERROR("%s: cannot find handle for llog "DOSTID": %d\n",
- cat_llh->lgh_ctxt->loc_obd->obd_name,
- POSTID(&lir->lid_id.lgl_oi), rc);
- return rc;
- }
-
- rc = llog_reverse_process(env, llh, d->lpd_cb, d->lpd_data, NULL);
- llog_handle_put(llh);
- return rc;
-}
-
-int llog_cat_reverse_process(const struct lu_env *env,
- struct llog_handle *cat_llh,
- llog_cb_t cb, void *data)
-{
- struct llog_process_data d;
- struct llog_process_cat_data cd;
- struct llog_log_hdr *llh = cat_llh->lgh_hdr;
- int rc;
-
- LASSERT(llh->llh_flags & LLOG_F_IS_CAT);
- d.lpd_data = data;
- d.lpd_cb = cb;
-
- if (llh->llh_cat_idx > cat_llh->lgh_last_idx) {
- CWARN("catalog "DOSTID" crosses index zero\n",
- POSTID(&cat_llh->lgh_id.lgl_oi));
-
- cd.lpcd_first_idx = 0;
- cd.lpcd_last_idx = cat_llh->lgh_last_idx;
- rc = llog_reverse_process(env, cat_llh,
- llog_cat_reverse_process_cb,
- &d, &cd);
- if (rc != 0)
- return rc;
-
- cd.lpcd_first_idx = le32_to_cpu(llh->llh_cat_idx);
- cd.lpcd_last_idx = 0;
- rc = llog_reverse_process(env, cat_llh,
- llog_cat_reverse_process_cb,
- &d, &cd);
- } else {
- rc = llog_reverse_process(env, cat_llh,
- llog_cat_reverse_process_cb,
- &d, NULL);
- }
-
- return rc;
-}
-EXPORT_SYMBOL(llog_cat_reverse_process);
-
-static int llog_cat_set_first_idx(struct llog_handle *cathandle, int index)
-{
- struct llog_log_hdr *llh = cathandle->lgh_hdr;
- int i, bitmap_size, idx;
-
- bitmap_size = LLOG_BITMAP_SIZE(llh);
- if (llh->llh_cat_idx == (index - 1)) {
- idx = llh->llh_cat_idx + 1;
- llh->llh_cat_idx = idx;
- if (idx == cathandle->lgh_last_idx)
- goto out;
- for (i = (index + 1) % bitmap_size;
- i != cathandle->lgh_last_idx;
- i = (i + 1) % bitmap_size) {
- if (!ext2_test_bit(i, llh->llh_bitmap)) {
- idx = llh->llh_cat_idx + 1;
- llh->llh_cat_idx = idx;
- } else if (i == 0) {
- llh->llh_cat_idx = 0;
- } else {
- break;
- }
- }
-out:
- CDEBUG(D_RPCTRACE, "set catlog "DOSTID" first idx %u\n",
- POSTID(&cathandle->lgh_id.lgl_oi), llh->llh_cat_idx);
- }
-
- return 0;
-}
-
-/* Cleanup deleted plain llog traces from catalog */
-int llog_cat_cleanup(const struct lu_env *env, struct llog_handle *cathandle,
- struct llog_handle *loghandle, int index)
-{
- int rc;
-
- LASSERT(index);
- if (loghandle != NULL) {
- /* remove destroyed llog from catalog list and
- * chd_current_log variable */
- down_write(&cathandle->lgh_lock);
- if (cathandle->u.chd.chd_current_log == loghandle)
- cathandle->u.chd.chd_current_log = NULL;
- list_del_init(&loghandle->u.phd.phd_entry);
- up_write(&cathandle->lgh_lock);
- LASSERT(index == loghandle->u.phd.phd_cookie.lgc_index);
- /* llog was opened and keep in a list, close it now */
- llog_close(env, loghandle);
- }
- /* remove plain llog entry from catalog by index */
- llog_cat_set_first_idx(cathandle, index);
- rc = llog_cancel_rec(env, cathandle, index);
- if (rc == 0)
- CDEBUG(D_HA, "cancel plain log at index %u of catalog " DOSTID "\n",
- index, POSTID(&cathandle->lgh_id.lgl_oi));
- return rc;
-}
-
-static int cat_cancel_cb(const struct lu_env *env, struct llog_handle *cathandle,
- struct llog_rec_hdr *rec, void *data)
-{
- struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
- struct llog_handle *loghandle;
- struct llog_log_hdr *llh;
- int rc;
-
- if (rec->lrh_type != LLOG_LOGID_MAGIC) {
- CERROR("invalid record in catalog\n");
- return -EINVAL;
- }
-
- CDEBUG(D_HA, "processing log "DOSTID":%x at index %u of catalog "
- DOSTID"\n", POSTID(&lir->lid_id.lgl_oi), lir->lid_id.lgl_ogen,
- rec->lrh_index, POSTID(&cathandle->lgh_id.lgl_oi));
-
- rc = llog_cat_id2handle(env, cathandle, &loghandle, &lir->lid_id);
- if (rc) {
- CERROR("%s: cannot find handle for llog "DOSTID": %d\n",
- cathandle->lgh_ctxt->loc_obd->obd_name,
- POSTID(&lir->lid_id.lgl_oi), rc);
- if (rc == -ENOENT || rc == -ESTALE) {
- /* remove index from catalog */
- llog_cat_cleanup(env, cathandle, NULL, rec->lrh_index);
- }
- return rc;
- }
-
- llh = loghandle->lgh_hdr;
- if ((llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
- (llh->llh_count == 1)) {
- rc = llog_destroy(env, loghandle);
- if (rc)
- CERROR("%s: fail to destroy empty log: rc = %d\n",
- loghandle->lgh_ctxt->loc_obd->obd_name, rc);
-
- llog_cat_cleanup(env, cathandle, loghandle,
- loghandle->u.phd.phd_cookie.lgc_index);
- }
- llog_handle_put(loghandle);
-
- return rc;
-}
-
-/* helper to initialize catalog llog and process it to cancel */
-int llog_cat_init_and_process(const struct lu_env *env,
- struct llog_handle *llh)
-{
- int rc;
-
- rc = llog_init_handle(env, llh, LLOG_F_IS_CAT, NULL);
- if (rc)
- return rc;
-
- rc = llog_process_or_fork(env, llh, cat_cancel_cb, NULL, NULL, false);
- if (rc)
- CERROR("%s: llog_process() with cat_cancel_cb failed: rc = %d\n",
- llh->lgh_ctxt->loc_obd->obd_name, rc);
- return 0;
-}
-EXPORT_SYMBOL(llog_cat_init_and_process);
struct llog_thread_info {
struct lu_attr lgi_attr;
struct lu_fid lgi_fid;
- struct dt_object_format lgi_dof;
struct lu_buf lgi_buf;
loff_t lgi_off;
struct llog_rec_hdr lgi_lrh;
extern struct lu_context_key llog_thread_key;
-static inline struct llog_thread_info *llog_info(const struct lu_env *env)
-{
- struct llog_thread_info *lgi;
-
- lgi = lu_context_key_get(&env->le_ctx, &llog_thread_key);
- LASSERT(lgi);
- return lgi;
-}
-
int llog_info_init(void);
void llog_info_fini(void);
}
EXPORT_SYMBOL(llog_setup);
-int llog_sync(struct llog_ctxt *ctxt, struct obd_export *exp, int flags)
-{
- int rc = 0;
-
- if (!ctxt)
- return 0;
-
- if (CTXTP(ctxt, sync))
- rc = CTXTP(ctxt, sync)(ctxt, exp, flags);
-
- return rc;
-}
-EXPORT_SYMBOL(llog_sync);
-
-int llog_cancel(const struct lu_env *env, struct llog_ctxt *ctxt,
- struct llog_cookie *cookies, int flags)
-{
- int rc;
-
- if (!ctxt) {
- CERROR("No ctxt\n");
- return -ENODEV;
- }
-
- CTXT_CHECK_OP(ctxt, cancel, -EOPNOTSUPP);
- rc = CTXTP(ctxt, cancel)(env, ctxt, cookies, flags);
- return rc;
-}
-EXPORT_SYMBOL(llog_cancel);
-
/* context key constructor/destructor: llog_key_init, llog_key_fini */
LU_KEY_INIT_FINI(llog, struct llog_thread_info);
/* context key: llog_thread_key */
return rc;
}
-static int llog_client_destroy(const struct lu_env *env,
- struct llog_handle *loghandle)
-{
- struct obd_import *imp;
- struct ptlrpc_request *req = NULL;
- struct llogd_body *body;
- int rc;
-
- LLOG_CLIENT_ENTRY(loghandle->lgh_ctxt, imp);
- req = ptlrpc_request_alloc_pack(imp, &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
- LUSTRE_LOG_VERSION,
- LLOG_ORIGIN_HANDLE_DESTROY);
- if (req == NULL) {
- rc = -ENOMEM;
- goto err_exit;
- }
-
- body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
- body->lgd_logid = loghandle->lgh_id;
- body->lgd_llh_flags = loghandle->lgh_hdr->llh_flags;
-
- if (!(body->lgd_llh_flags & LLOG_F_IS_PLAIN))
- CERROR("%s: wrong llog flags %x\n", imp->imp_obd->obd_name,
- body->lgd_llh_flags);
-
- ptlrpc_request_set_replen(req);
- rc = ptlrpc_queue_wait(req);
-
- ptlrpc_req_finished(req);
-err_exit:
- LLOG_CLIENT_EXIT(loghandle->lgh_ctxt, imp);
- return rc;
-}
-
-
static int llog_client_next_block(const struct lu_env *env,
struct llog_handle *loghandle,
int *cur_idx, int next_idx,
.lop_prev_block = llog_client_prev_block,
.lop_read_header = llog_client_read_header,
.lop_open = llog_client_open,
- .lop_destroy = llog_client_destroy,
.lop_close = llog_client_close,
};
EXPORT_SYMBOL(llog_client_ops);
projects / openwrt / staging / blogic.git / commitdiff