int mds_lmv_connect(struct obd_device *obd, char * lmv_name)
{
struct mds_obd *mds = &obd->u.mds;
- struct lustre_handle conn = {0,};
- int valsize, mdsize;
- int rc;
+ struct lustre_handle conn = {0};
+ int rc, valsize, value;
ENTRY;
if (IS_ERR(mds->mds_lmv_obd))
if (mds->mds_lmv_obd)
RETURN(0);
+ down(&mds->mds_lmv_sem);
+ if (mds->mds_lmv_obd) {
+ up(&mds->mds_lmv_sem);
+ RETURN(0);
+ }
+
mds->mds_lmv_obd = class_name2obd(lmv_name);
if (!mds->mds_lmv_obd) {
CERROR("MDS cannot locate LMV %s\n",
lmv_name);
mds->mds_lmv_obd = ERR_PTR(-ENOTCONN);
- RETURN(-ENOTCONN);
+ GOTO(err_last, rc = -ENOTCONN);
}
- rc = obd_connect(&conn, mds->mds_lmv_obd, &obd->obd_uuid);
+ rc = obd_connect(&conn, mds->mds_lmv_obd, &obd->obd_uuid, OBD_OPT_MDS_CONNECTION);
if (rc) {
CERROR("MDS cannot connect to LMV %s (%d)\n",
lmv_name, rc);
mds->mds_lmv_obd = ERR_PTR(rc);
- RETURN(rc);
+ GOTO(err_last, rc);
}
mds->mds_lmv_exp = class_conn2export(&conn);
if (mds->mds_lmv_exp == NULL)
rc = obd_register_observer(mds->mds_lmv_obd, obd);
if (rc) {
- CERROR("MDS cannot register as observer of LMV %s (%d)\n",
- lmv_name, rc);
+ CERROR("MDS cannot register as observer of LMV %s, "
+ "rc = %d\n", lmv_name, rc);
GOTO(err_discon, rc);
}
/* retrieve size of EA */
rc = obd_get_info(mds->mds_lmv_exp, strlen("mdsize"), "mdsize",
- &valsize, &mdsize);
+ &valsize, &value);
if (rc)
GOTO(err_reg, rc);
- if (mdsize > mds->mds_max_mdsize)
- mds->mds_max_mdsize = mdsize;
+
+ if (value > mds->mds_max_mdsize)
+ mds->mds_max_mdsize = value;
/* find our number in LMV cluster */
rc = obd_get_info(mds->mds_lmv_exp, strlen("mdsnum"), "mdsnum",
- &valsize, &mdsize);
+ &valsize, &value);
if (rc)
GOTO(err_reg, rc);
- mds->mds_num = mdsize;
+
+ mds->mds_num = value;
+ rc = obd_set_info(mds->mds_lmv_exp, strlen("inter_mds"),
+ "inter_mds", 0, NULL);
+ if (rc)
+ GOTO(err_reg, rc);
+
+ up(&mds->mds_lmv_sem);
RETURN(0);
err_reg:
- RETURN(rc);
-
+ obd_register_observer(mds->mds_lmv_obd, NULL);
err_discon:
- /* FIXME: cleanups here! */
obd_disconnect(mds->mds_lmv_exp, 0);
mds->mds_lmv_exp = NULL;
mds->mds_lmv_obd = ERR_PTR(rc);
+err_last:
+ up(&mds->mds_lmv_sem);
RETURN(rc);
}
int mds_lmv_postsetup(struct obd_device *obd)
{
struct mds_obd *mds = &obd->u.mds;
+ int rc = 0;
ENTRY;
+
if (mds->mds_lmv_exp)
- obd_init_ea_size(mds->mds_lmv_exp, mds->mds_max_mdsize,
- mds->mds_max_cookiesize);
- RETURN(0);
+ rc = obd_init_ea_size(mds->mds_lmv_exp, mds->mds_max_mdsize,
+ mds->mds_max_cookiesize);
+
+ RETURN(rc);
}
int mds_lmv_disconnect(struct obd_device *obd, int flags)
int rc = 0;
ENTRY;
+ down(&mds->mds_lmv_sem);
if (!IS_ERR(mds->mds_lmv_obd) && mds->mds_lmv_exp != NULL) {
-
obd_register_observer(mds->mds_lmv_obd, NULL);
+ /* if obd_disconnect fails (probably because the export was
+ * disconnected by class_disconnect_exports) then we just need
+ * to drop our ref. */
rc = obd_disconnect(mds->mds_lmv_exp, flags);
- /* if obd_disconnect fails (probably because the
- * export was disconnected by class_disconnect_exports)
- * then we just need to drop our ref. */
- if (rc != 0)
+ if (rc)
class_export_put(mds->mds_lmv_exp);
+
mds->mds_lmv_exp = NULL;
mds->mds_lmv_obd = NULL;
}
+ up(&mds->mds_lmv_sem);
RETURN(rc);
}
-
int mds_get_lmv_attr(struct obd_device *obd, struct inode *inode,
- struct mea **mea, int *mea_size)
+ struct mea **mea, int *mea_size)
{
struct mds_obd *mds = &obd->u.mds;
int rc;
if (!mds->mds_lmv_obd)
RETURN(0);
+ if (!S_ISDIR(inode->i_mode))
+ RETURN(0);
/* first calculate mea size */
*mea_size = obd_alloc_diskmd(mds->mds_lmv_exp,
- (struct lov_mds_md **) mea);
- /* FIXME: error handling here */
- LASSERT(*mea != NULL);
-
- down(&inode->i_sem);
- rc = fsfilt_get_md(obd, inode, *mea, *mea_size);
- up(&inode->i_sem);
- /* FIXME: error handling here */
+ (struct lov_mds_md **)mea);
+ if (*mea_size < 0 || *mea == NULL)
+ return *mea_size < 0 ? *mea_size : -EINVAL;
+
+ rc = mds_get_md(obd, inode, *mea, mea_size, 1);
+
if (rc <= 0) {
OBD_FREE(*mea, *mea_size);
*mea = NULL;
- }
- if (rc > 0)
+ } else
rc = 0;
+
RETURN(rc);
}
static int retrieve_generation_numbers(struct dirsplit_control *dc, void *buf)
{
+ struct mds_obd *mds = &dc->obd->u.mds;
struct dir_entry *de;
struct dentry *dentry;
char * end;
end = buf + PAGE_SIZE;
de = (struct dir_entry *) buf;
while ((char *) de < end && de->namelen) {
- LASSERT(de->namelen <= 255);
/* lookup an inode */
+ LASSERT(de->namelen <= 255);
dentry = ll_lookup_one_len(de->name, dc->dentry, de->namelen);
if (IS_ERR(dentry)) {
- CERROR("can't lookup '%*s'/%u in %lu: %d\n",
- (int) de->namelen, de->name,
- (unsigned) de->namelen,
- (unsigned long) dc->dentry->d_inode->i_ino,
- (int) PTR_ERR(dentry));
+ CERROR("can't lookup %*s: %d\n", de->namelen,
+ de->name, (int) PTR_ERR(dentry));
+ goto next;
+ }
+ if (dentry->d_inode != NULL) {
+ de->mds = mds->mds_num;
+ de->ino = dentry->d_inode->i_ino;
+ de->generation = dentry->d_inode->i_generation;
+ } else if (dentry->d_flags & DCACHE_CROSS_REF) {
+ de->mds = dentry->d_mdsnum;
+ de->ino = dentry->d_inum;
+ de->generation = dentry->d_generation;
+ } else {
+ CERROR("can't lookup %*s\n", de->namelen, de->name);
+ goto next;
}
- LASSERT(!IS_ERR(dentry));
- LASSERT(dentry->d_inode != NULL);
- de->generation = dentry->d_inode->i_generation;
l_dput(dentry);
+
+next:
de = (struct dir_entry *)
((char *) de + DIR_REC_LEN(de->namelen));
}
static int flush_buffer_onto_mds(struct dirsplit_control *dc, int mdsnum)
{
struct mds_obd *mds = &dc->obd->u.mds;
- struct dir_cache *ca;
struct list_head *cur, *tmp;
+ struct dir_cache *ca;
+ int rc;
ENTRY;
ca = dc->cache + mdsnum;
ca->brwc.count = PAGE_SIZE;
ca->brwc.flag = 0;
ca->oa.o_mds = mdsnum;
- obd_brw(OBD_BRW_WRITE, mds->mds_lmv_exp, &ca->oa,
- (struct lov_stripe_md *) dc->mea,
- 1, &ca->brwc, NULL);
+ rc = obd_brw(OBD_BRW_WRITE, mds->mds_lmv_exp, &ca->oa,
+ (struct lov_stripe_md *) dc->mea,
+ 1, &ca->brwc, NULL);
+ if (rc)
+ RETURN(rc);
- list_del(&page->list);
- __free_page(page);
+ }
+ RETURN(0);
+}
+
+static int remove_entries_from_orig_dir(struct dirsplit_control *dc, int mdsnum)
+{
+ struct list_head *cur, *tmp;
+ struct dentry *dentry;
+ struct dir_cache *ca;
+ struct dir_entry *de;
+ struct page *page;
+ char *buf, *end;
+ int rc;
+ ENTRY;
+
+ ca = dc->cache + mdsnum;
+ list_for_each_safe(cur, tmp, &ca->list) {
+ page = list_entry(cur, struct page, list);
+ buf = page_address(page);
+ end = buf + PAGE_SIZE;
+
+ de = (struct dir_entry *) buf;
+ while ((char *) de < end && de->namelen) {
+ /* lookup an inode */
+ LASSERT(de->namelen <= 255);
+
+ dentry = ll_lookup_one_len(de->name, dc->dentry,
+ de->namelen);
+ if (IS_ERR(dentry)) {
+ CERROR("can't lookup %*s: %d\n", de->namelen,
+ de->name, (int) PTR_ERR(dentry));
+ goto next;
+ }
+ rc = fsfilt_del_dir_entry(dc->obd, dentry);
+ l_dput(dentry);
+next:
+ de = (struct dir_entry *)
+ ((char *) de + DIR_REC_LEN(de->namelen));
+ }
}
RETURN(0);
}
}
err = vfs_readdir(file, filldir, &dc);
-
filp_close(file, 0);
+ if (err)
+ GOTO(cleanup, err);
for (i = 0; i < mea->mea_count; i++) {
- if (dc.cache[i].cached)
- flush_buffer_onto_mds(&dc, i);
+ if (!dc.cache[i].cached)
+ continue;
+ err = flush_buffer_onto_mds(&dc, i);
+ if (err)
+ GOTO(cleanup, err);
}
+ for (i = 0; i < mea->mea_count; i++) {
+ if (!dc.cache[i].cached)
+ continue;
+ err = remove_entries_from_orig_dir(&dc, i);
+ if (err)
+ GOTO(cleanup, err);
+ }
+
+cleanup:
+ for (i = 0; i < mea->mea_count; i++) {
+ struct list_head *cur, *tmp;
+ if (!dc.cache[i].cached)
+ continue;
+ list_for_each_safe(cur, tmp, &dc.cache[i].list) {
+ struct page *page;
+ page = list_entry(cur, struct page, list);
+ list_del(&page->list);
+ __free_page(page);
+ }
+ }
OBD_FREE(dc.cache, sizeof(struct dir_cache) * mea->mea_count);
OBD_FREE(file_name, nlen);
- return 0;
+ RETURN(err);
}
#define MAX_DIR_SIZE (64 * 1024)
+#define I_NON_SPLITTABLE 256
+
+int mds_splitting_expected(struct obd_device *obd, struct dentry *dentry)
+{
+ struct mds_obd *mds = &obd->u.mds;
+ struct mea *mea = NULL;
+ int rc, size;
+
+ /* clustered MD ? */
+ if (!mds->mds_lmv_obd)
+ RETURN(MDS_NO_SPLITTABLE);
+
+ /* inode exist? */
+ if (dentry->d_inode == NULL)
+ return MDS_NO_SPLITTABLE;
+
+ /* a dir can be splitted only */
+ if (!S_ISDIR(dentry->d_inode->i_mode))
+ return MDS_NO_SPLITTABLE;
+
+ /* already splittied or slave directory (part of splitted dir) */
+ if (dentry->d_inode->i_flags & I_NON_SPLITTABLE)
+ return MDS_NO_SPLITTABLE;
+
+ /* don't split root directory */
+ if (dentry->d_inode->i_ino == mds->mds_rootfid.id)
+ return MDS_NO_SPLITTABLE;
+
+ /* large enough to be splitted? */
+ if (dentry->d_inode->i_size < MAX_DIR_SIZE)
+ return MDS_NO_SPLIT_EXPECTED;
+
+ mds_get_lmv_attr(obd, dentry->d_inode, &mea, &size);
+ if (mea) {
+ /* already splitted or slave object: shouldn't be splitted */
+ rc = MDS_NO_SPLITTABLE;
+ /* mark to skip subsequent checks */
+ dentry->d_inode->i_flags |= I_NON_SPLITTABLE;
+ } else {
+ /* may be splitted */
+ rc = MDS_EXPECT_SPLIT;
+ }
+
+ if (mea)
+ OBD_FREE(mea, size);
+ RETURN(rc);
+}
+
/*
- * must not be called on already splitted directories
+ * must not be called on already splitted directories.
*/
-int mds_try_to_split_dir(struct obd_device *obd,
- struct dentry *dentry, struct mea **mea, int nstripes)
+int mds_try_to_split_dir(struct obd_device *obd, struct dentry *dentry,
+ struct mea **mea, int nstripes, int update_mode)
{
struct inode *dir = dentry->d_inode;
struct mds_obd *mds = &obd->u.mds;
void *handle;
ENTRY;
- /* clustered MD ? */
- if (!mds->mds_lmv_obd)
- RETURN(0);
-
- /* don't split root directory */
- if (dentry->d_inode->i_ino == mds->mds_rootfid.id)
- RETURN(0);
-
- /* we want to split only large dirs. this may be already
- * splitted dir or a slave dir created during splitting */
- if (dir->i_size < MAX_DIR_SIZE)
- RETURN(0);
-
- /* check is directory marked non-splittable */
- if (mea && *mea)
- RETURN(0);
+ if (update_mode != LCK_EX)
+ return 0;
+ /* TODO: optimization possible - we already may have mea here */
+ rc = mds_splitting_expected(obd, dentry);
+ if (rc == MDS_NO_SPLITTABLE)
+ return 0;
+ if (rc == MDS_NO_SPLIT_EXPECTED && nstripes == 0)
+ return 0;
+ if (nstripes && nstripes == 1)
+ return 0;
+
+ LASSERT(mea == NULL || *mea == NULL);
- CDEBUG(D_OTHER, "%s: split directory %lu/%lu\n",
- obd->obd_name, dir->i_ino, (unsigned long) dir->i_generation);
+ CDEBUG(D_OTHER, "%s: split directory %u/%lu/%lu\n",
+ obd->obd_name, mds->mds_num, dir->i_ino,
+ (unsigned long) dir->i_generation);
if (mea == NULL)
mea = &tmea;
* necessary amount of stripes, but on the other hand with this
* approach of allocating maximal possible amount of MDS slots,
* it would be easier to split the dir over more MDSes */
- rc = obd_alloc_diskmd(mds->mds_lmv_exp, (void *) mea);
- if (!(*mea))
- RETURN(-ENOMEM);
+ rc = obd_alloc_diskmd(mds->mds_lmv_exp, (void *)mea);
+ if (rc < 0) {
+ CERROR("obd_alloc_diskmd() failed, error %d.\n", rc);
+ RETURN(rc);
+ }
+ if (*mea == NULL)
+ RETURN(-EINVAL);
+
(*mea)->mea_count = nstripes;
-#warning "we have to take EX lock on a dir for splitting"
-
/* 1) create directory objects on slave MDS'es */
/* FIXME: should this be OBD method? */
oa = obdo_alloc();
- /* FIXME: error handling here */
- LASSERT(oa != NULL);
+ if (!oa)
+ RETURN(-ENOMEM);
+
oa->o_id = dir->i_ino;
oa->o_generation = dir->i_generation;
- obdo_from_inode(oa, dir, OBD_MD_FLTYPE | OBD_MD_FLATIME |
+
+ obdo_from_inode(oa, dir, OBD_MD_FLTYPE | OBD_MD_FLATIME |
OBD_MD_FLMTIME | OBD_MD_FLCTIME |
OBD_MD_FLUID | OBD_MD_FLGID);
+
oa->o_gr = FILTER_GROUP_FIRST_MDS + mds->mds_num;
oa->o_valid |= OBD_MD_FLID | OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
oa->o_mode = dir->i_mode;
+
CDEBUG(D_OTHER, "%s: create subdirs with mode %o, uid %u, gid %u\n",
obd->obd_name, dir->i_mode, dir->i_uid, dir->i_gid);
rc = obd_create(mds->mds_lmv_exp, oa,
- (struct lov_stripe_md **) mea, NULL);
- /* FIXME: error handling here */
- LASSERT(rc == 0);
- CDEBUG(D_OTHER, "%d dirobjects created\n",
- (int) (*mea)->mea_count);
+ (struct lov_stripe_md **)mea, NULL);
+ if (rc)
+ GOTO(err_oa, rc);
+
+ CDEBUG(D_OTHER, "%d dirobjects created\n", (int)(*mea)->mea_count);
/* 2) update dir attribute */
down(&dir->i_sem);
+
handle = fsfilt_start(obd, dir, FSFILT_OP_SETATTR, NULL);
- LASSERT(!IS_ERR(handle));
+ if (IS_ERR(handle)) {
+ up(&dir->i_sem);
+ CERROR("fsfilt_start() failed: %d\n", (int) PTR_ERR(handle));
+ GOTO(err_oa, rc = PTR_ERR(handle));
+ }
+
rc = fsfilt_set_md(obd, dir, handle, *mea, mea_size);
- LASSERT(rc == 0);
- fsfilt_commit(obd, dir, handle, 0);
- LASSERT(rc == 0);
+ if (rc) {
+ up(&dir->i_sem);
+ CERROR("fsfilt_set_md() failed, error %d.\n", rc);
+ GOTO(err_oa, rc);
+ }
+
+ rc = fsfilt_commit(obd, mds->mds_sb, dir, handle, 0);
+ if (rc) {
+ up(&dir->i_sem);
+ CERROR("fsfilt_commit() failed, error %d.\n", rc);
+ GOTO(err_oa, rc);
+ }
+
up(&dir->i_sem);
obdo_free(oa);
/* 3) read through the dir and distribute it over objects */
- scan_and_distribute(obd, dentry, *mea);
-
+ rc = scan_and_distribute(obd, dentry, *mea);
if (mea == &tmea)
- obd_free_diskmd(mds->mds_lmv_exp,
- (struct lov_mds_md **) mea);
+ obd_free_diskmd(mds->mds_lmv_exp, (struct lov_mds_md **)mea);
+ if (rc) {
+ CERROR("scan_and_distribute() failed, error %d.\n", rc);
+ RETURN(rc);
+ }
+
RETURN(1);
+
+err_oa:
+ obdo_free(oa);
+ RETURN(rc);
}
static int filter_start_page_write(struct inode *inode,
struct dentry *filter_fid2dentry(struct obd_device *obd,
struct dentry *dir_dentry,
obd_gr group, obd_id id);
-void f_dput(struct dentry *dentry);
int mds_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
int objcount, struct obd_ioobj *obj,
fid.id = obj->ioo_id;
fid.generation = obj->ioo_gr;
dentry = mds_fid2dentry(mds, &fid, NULL);
- LASSERT(!IS_ERR(dentry));
+ if (IS_ERR(dentry)) {
+ CERROR("can't get dentry for "LPU64"/%u: %d\n",
+ fid.id, fid.generation, (int) PTR_ERR(dentry));
+ GOTO(cleanup, rc = (int) PTR_ERR(dentry));
+ }
if (dentry->d_inode == NULL) {
CERROR("trying to BRW to non-existent file "LPU64"\n",
obj->ioo_id);
- f_dput(dentry);
+ l_dput(dentry);
GOTO(cleanup, rc = -ENOENT);
}
i, obj->ioo_bufcnt, dentry, rc);
while (lnb-- > res)
__free_pages(lnb->page, 0);
- f_dput(dentry);
+ l_dput(dentry);
GOTO(cleanup, rc);
}
tot_bytes += lnb->len;
err = fsfilt_add_dir_entry(obd, res->dentry, de->name,
de->namelen, de->ino,
de->generation, de->mds);
- /* FIXME: remove entries from the original dir */
-#warning "removing entries from the original dir"
+ if (err) {
+ CERROR("can't add dir entry %*s->%u/%u/%u"
+ " to %lu/%u: %d\n",
+ de->namelen, de->name,
+ de->mds, (unsigned) de->ino,
+ (unsigned) de->generation,
+ res->dentry->d_inode->i_ino,
+ res->dentry->d_inode->i_generation,
+ err);
+ rc = err;
+ break;
+ }
LASSERT(err == 0);
de = (struct dir_entry *)
((char *) de + DIR_REC_LEN(de->namelen));
entries++;
}
- kunmap(buf);
+ kunmap(lnb->page);
}
for (i = 0, lnb = res; i < obj->ioo_bufcnt; i++, lnb++)
__free_page(lnb->page);
- f_dput(res->dentry);
+ l_dput(res->dentry);
RETURN(rc);
}
-int mds_choose_mdsnum(struct obd_device *obd, const char *name, int len)
+int mds_choose_mdsnum(struct obd_device *obd, const char *name, int len, int flags)
{
+ struct lmv_obd *lmv;
struct mds_obd *mds = &obd->u.mds;
- struct lmv_obd *lmv = &mds->mds_lmv_exp->exp_obd->u.lmv;
- int i;
+ int i = mds->mds_num;
- i = raw_name2idx(lmv->count, name, len);
+ if (flags & REC_REINT_CREATE) {
+ i = mds->mds_num;
+ } else if (mds->mds_lmv_exp) {
+ lmv = &mds->mds_lmv_exp->exp_obd->u.lmv;
+ i = raw_name2idx(MEA_MAGIC_LAST_CHAR, lmv->desc.ld_tgt_count, name, len);
+ }
RETURN(i);
}
+int mds_lock_slave_objs(struct obd_device *obd, struct dentry *dentry,
+ struct lustre_handle **rlockh)
+{
+ struct mds_obd *mds = &obd->u.mds;
+ struct mdc_op_data op_data;
+ struct lookup_intent it;
+ struct mea *mea = NULL;
+ int mea_size, rc;
+
+ LASSERT(rlockh != NULL);
+ LASSERT(dentry != NULL);
+ LASSERT(dentry->d_inode != NULL);
+
+ /* clustered MD ? */
+ if (!mds->mds_lmv_obd)
+ return 0;
+
+ /* a dir can be splitted only */
+ if (!S_ISDIR(dentry->d_inode->i_mode))
+ return 0;
+
+ rc = mds_get_lmv_attr(obd, dentry->d_inode, &mea, &mea_size);
+ if (rc)
+ return rc;
+
+ if (mea == NULL)
+ return 0;
+ if (mea->mea_count == 0) {
+ /* this is slave object */
+ GOTO(cleanup, rc = 0);
+ }
+
+ CDEBUG(D_OTHER, "%s: lock slaves for %lu/%lu\n", obd->obd_name,
+ (unsigned long) dentry->d_inode->i_ino,
+ (unsigned long) dentry->d_inode->i_generation);
+
+ OBD_ALLOC(*rlockh, sizeof(struct lustre_handle) * mea->mea_count);
+ if (*rlockh == NULL)
+ GOTO(cleanup, rc = -ENOMEM);
+ memset(*rlockh, 0, sizeof(struct lustre_handle) * mea->mea_count);
+
+ memset(&op_data, 0, sizeof(op_data));
+ op_data.mea1 = mea;
+ it.it_op = IT_UNLINK;
+ rc = md_enqueue(mds->mds_lmv_exp, LDLM_IBITS, &it, LCK_EX, &op_data,
+ *rlockh, NULL, 0, ldlm_completion_ast, mds_blocking_ast,
+ NULL);
+cleanup:
+ OBD_FREE(mea, mea_size);
+ RETURN(rc);
+}
+
+void mds_unlock_slave_objs(struct obd_device *obd, struct dentry *dentry,
+ struct lustre_handle *lockh)
+{
+ struct mds_obd *mds = &obd->u.mds;
+ struct mea *mea = NULL;
+ int mea_size, rc, i;
+
+ if (lockh == NULL)
+ return;
+
+ LASSERT(mds->mds_lmv_obd != NULL);
+ LASSERT(S_ISDIR(dentry->d_inode->i_mode));
+
+ rc = mds_get_lmv_attr(obd, dentry->d_inode, &mea, &mea_size);
+ if (rc) {
+ CERROR("locks are leaked\n");
+ return;
+ }
+ LASSERT(mea_size != 0);
+ LASSERT(mea != NULL);
+ LASSERT(mea->mea_count != 0);
+
+ CDEBUG(D_OTHER, "%s: unlock slaves for %lu/%lu\n", obd->obd_name,
+ (unsigned long) dentry->d_inode->i_ino,
+ (unsigned long) dentry->d_inode->i_generation);
+
+ for (i = 0; i < mea->mea_count; i++) {
+ if (lockh[i].cookie != 0)
+ ldlm_lock_decref(lockh + i, LCK_EX);
+ }
+
+ OBD_FREE(lockh, sizeof(struct lustre_handle) * mea->mea_count);
+ OBD_FREE(mea, mea_size);
+ return;
+}
+
+int mds_unlink_slave_objs(struct obd_device *obd, struct dentry *dentry)
+{
+ struct mds_obd *mds = &obd->u.mds;
+ struct ptlrpc_request *req = NULL;
+ struct mdc_op_data op_data;
+ struct mea *mea = NULL;
+ int mea_size, rc;
+
+ /* clustered MD ? */
+ if (!mds->mds_lmv_obd)
+ return 0;
+
+ /* a dir can be splitted only */
+ if (!S_ISDIR(dentry->d_inode->i_mode))
+ RETURN(0);
+
+ rc = mds_get_lmv_attr(obd, dentry->d_inode, &mea, &mea_size);
+ if (rc)
+ RETURN(rc);
+
+ if (mea == NULL)
+ return 0;
+ if (mea->mea_count == 0)
+ GOTO(cleanup, rc = 0);
+
+ CDEBUG(D_OTHER, "%s: unlink slaves for %lu/%lu\n", obd->obd_name,
+ (unsigned long) dentry->d_inode->i_ino,
+ (unsigned long) dentry->d_inode->i_generation);
+
+ memset(&op_data, 0, sizeof(op_data));
+ op_data.mea1 = mea;
+ rc = md_unlink(mds->mds_lmv_exp, &op_data, &req);
+ LASSERT(req == NULL);
+cleanup:
+ OBD_FREE(mea, mea_size);
+ RETURN(rc);
+}
+
+struct ide_tracking {
+ int entries;
+ int empty;
+};
+
+int mds_ide_filldir(void *__buf, const char *name, int namelen,
+ loff_t offset, ino_t ino, unsigned int d_type)
+{
+ struct ide_tracking *it = __buf;
+
+ if (ino == 0)
+ return 0;
+
+ it->entries++;
+ if (it->entries > 2)
+ goto noempty;
+ if (namelen > 2)
+ goto noempty;
+ if (name[0] == '.' && namelen == 1)
+ return 0;
+ if (name[0] == '.' && name[1] == '.' && namelen == 2)
+ return 0;
+noempty:
+ it->empty = 0;
+ return -ENOTEMPTY;
+}
+
+int mds_is_dir_empty(struct obd_device *obd, struct dentry *dentry)
+{
+ struct ide_tracking it;
+ struct file * file;
+ char *file_name;
+ int nlen, i, rc;
+
+ it.entries = 0;
+ it.empty = 1;
+
+ nlen = strlen("__iopen__/") + 10 + 1;
+ OBD_ALLOC(file_name, nlen);
+ if (!file_name)
+ RETURN(-ENOMEM);
+ i = sprintf(file_name, "__iopen__/0x%lx", dentry->d_inode->i_ino);
+
+ file = filp_open(file_name, O_RDONLY, 0);
+ if (IS_ERR(file)) {
+ CERROR("can't open directory %s: %d\n",
+ file_name, (int) PTR_ERR(file));
+ GOTO(cleanup, rc = PTR_ERR(file));
+ }
+
+ rc = vfs_readdir(file, mds_ide_filldir, &it);
+ filp_close(file, 0);
+
+ if (it.empty && rc == 0)
+ rc = 1;
+ else
+ rc = 0;
+
+cleanup:
+ OBD_FREE(file_name, nlen);
+ return rc;
+}
+
+int mds_lock_and_check_slave(int offset, struct ptlrpc_request *req,
+ struct lustre_handle *lockh)
+{
+ struct obd_device *obd = req->rq_export->exp_obd;
+ struct dentry *dentry = NULL;
+ struct lvfs_run_ctxt saved;
+ int cleanup_phase = 0;
+ struct mds_body *body;
+ struct lvfs_ucred uc;
+ int rc, update_mode;
+ ENTRY;
+
+ body = lustre_swab_reqbuf(req, offset, sizeof(*body),
+ lustre_swab_mds_body);
+ if (body == NULL) {
+ CERROR("Can't swab mds_body\n");
+ GOTO(cleanup, rc = -EFAULT);
+ }
+ CDEBUG(D_OTHER, "%s: check slave %lu/%lu\n", obd->obd_name,
+ (unsigned long) body->fid1.id,
+ (unsigned long) body->fid1.generation);
+ dentry = mds_fid2locked_dentry(obd, &body->fid1, NULL, LCK_EX, lockh,
+ &update_mode, NULL, 0,
+ MDS_INODELOCK_UPDATE);
+ if (IS_ERR(dentry)) {
+ CERROR("can't find inode: %d\n", (int) PTR_ERR(dentry));
+ GOTO(cleanup, rc = PTR_ERR(dentry));
+ }
+ cleanup_phase = 1;
+
+ LASSERT(S_ISDIR(dentry->d_inode->i_mode));
+
+ uc.luc_fsuid = body->fsuid;
+ uc.luc_fsgid = body->fsgid;
+ uc.luc_cap = body->capability;
+ uc.luc_suppgid1 = body->suppgid;
+ uc.luc_suppgid2 = -1;
+ push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
+
+ rc = 0;
+ if (!mds_is_dir_empty(obd, dentry))
+ rc = -ENOTEMPTY;
+
+cleanup:
+ switch(cleanup_phase) {
+ case 1:
+ if (rc)
+ ldlm_lock_decref(lockh, LCK_EX);
+ l_dput(dentry);
+ pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
+ default:
+ break;
+ }
+ RETURN(rc);
+}
+
+int mds_convert_mea_ea(struct obd_device *obd, struct inode *inode,
+ struct lov_mds_md *lmm, int lmmsize)
+{
+ int i, rc, err, size;
+ struct mea_old *old;
+ struct mea *mea;
+ struct mea *new;
+ void *handle;
+ ENTRY;
+
+ mea = (struct mea *) lmm;
+ if (mea->mea_magic == MEA_MAGIC_LAST_CHAR ||
+ mea->mea_magic == MEA_MAGIC_ALL_CHARS)
+ RETURN(0);
+
+ old = (struct mea_old *) lmm;
+ rc = sizeof(struct ll_fid) * old->mea_count + sizeof(struct mea_old);
+ if (old->mea_count > 256 || old->mea_master > 256 || lmmsize < rc
+ || old->mea_master > old->mea_count) {
+ CWARN("unknown MEA format, dont convert it\n");
+ CWARN(" count %u, master %u, size %u\n",
+ old->mea_count, old->mea_master, rc);
+ RETURN(0);
+ }
+
+ CWARN("converting MEA EA on %lu/%u from V0 to V1 (%u/%u)\n",
+ inode->i_ino, inode->i_generation, old->mea_count, old->mea_master);
+
+ size = sizeof(struct ll_fid) * old->mea_count + sizeof(struct mea);
+ OBD_ALLOC(new, size);
+ if (new == NULL)
+ RETURN(-ENOMEM);
+
+ new->mea_magic = MEA_MAGIC_LAST_CHAR;
+ new->mea_count = old->mea_count;
+ new->mea_master = old->mea_master;
+ for (i = 0; i < new->mea_count; i++)
+ new->mea_fids[i] = old->mea_fids[i];
+
+ handle = fsfilt_start(obd, inode, FSFILT_OP_SETATTR, NULL);
+ if (IS_ERR(handle)) {
+ rc = PTR_ERR(handle);
+ GOTO(conv_free, rc);
+ }
+
+ rc = fsfilt_set_md(obd, inode, handle, (struct lov_mds_md *) new, size);
+ if (rc > lmmsize)
+ size = lmmsize;
+ memcpy(lmm, new, size);
+
+ err = fsfilt_commit(obd, obd->u.mds.mds_sb, inode, handle, 0);
+ if (!rc)
+ rc = err ? err : size;
+ GOTO(conv_free, rc);
+conv_free:
+ OBD_FREE(new, size);
+ return rc;
+}
+
git://git.whamcloud.com / fs / lustre-release.git / blobdiff