* Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2016, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include <obd_class.h>
#include <lustre_disk.h>
#include <lustre_fid.h>
+#include <lustre_linkea.h>
#include "osd_internal.h"
RETURN(-EOPNOTSUPP);
down_read(&obj->oo_guard);
+ if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed)) {
+ up_read(&obj->oo_guard);
+ RETURN(-ENOENT);
+ }
+
/* For the OST migrated from ldiskfs, the PFID EA may
* be stored in LMA because of ldiskfs inode size. */
if (strcmp(name, XATTR_NAME_FID) == 0 && obj->oo_pfid_in_lma)
int vallen, const char *name,
struct osd_thandle *oh)
{
+ struct osd_device *osd = osd_obj2dev(obj);
dmu_tx_t *tx = oh->ot_tx;
int bonuslen;
if (unlikely(obj->oo_destroyed))
return;
+ if (strcmp(name, XATTR_NAME_LINK) == 0 &&
+ osd->od_remote_parent_dir != ZFS_NO_OBJECT) {
+ /* If some name entry resides on remote MDT, then will create
+ * agent entry under remote parent. On the other hand, if the
+ * remote entry will be removed, then related agent entry may
+ * need to be removed from the remote parent. So there may be
+ * kinds of cases, let's declare enough credits. The credits
+ * for create agent entry is enough for remove case. */
+ osd_tx_hold_zap(tx, osd->od_remote_parent_dir,
+ NULL, TRUE, NULL);
+ }
+
if (unlikely(!osd_obj2dev(obj)->od_xattr_in_sa)) {
__osd_xattr_declare_legacy(env, obj, vallen, name, oh);
return;
int __osd_sa_attr_init(const struct lu_env *env, struct osd_object *obj,
struct osd_thandle *oh)
{
- sa_bulk_attr_t *bulk = osd_oti_get(env)->oti_attr_bulk;
- struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
+ sa_bulk_attr_t *bulk = osd_oti_get(env)->oti_attr_bulk;
+ struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
struct lu_buf *lb = &osd_oti_get(env)->oti_xattr_lbuf;
struct osd_device *osd = osd_obj2dev(obj);
uint64_t crtime[2], gen;
- timestruc_t now;
+ inode_timespec_t now;
size_t size;
int rc, cnt;
la->la_valid = LA_MODE;
la->la_mode = S_IFREG | S_IRUGO | S_IWUSR;
- rc = __osd_object_create(env, obj, &xa_data_dn, tx, la);
+ rc = __osd_object_create(env, osd, obj,
+ lu_object_fid(&obj->oo_dt.do_lu),
+ &xa_data_dn, tx, la);
if (rc)
goto out;
xa_data_obj = xa_data_dn->dn_object;
RETURN(rc);
}
+/*
+ * In DNE environment, the object (in spite of regular file or directory)
+ * and its name entry may reside on different MDTs. Under such case, we will
+ * create an agent entry on the MDT where the object resides. The agent entry
+ * references the object locally, that makes the object to be visible to the
+ * userspace when mounted as 'zfs' directly. Then the userspace tools, such
+ * as 'tar' can handle the object properly.
+ *
+ * We handle the agent entry during set linkEA that is the common interface
+ * for both regular file and directroy, can handle kinds of cases, such as
+ * create/link/unlink/rename, and so on.
+ *
+ * NOTE: we need to do that for both directory and regular file, so we can NOT
+ * do that when ea_{insert,delete} that are directory based operations.
+ */
+static int osd_xattr_handle_linkea(const struct lu_env *env,
+ struct osd_device *osd,
+ struct osd_object *obj,
+ const struct lu_buf *buf,
+ struct osd_thandle *oh)
+{
+ const struct lu_fid *fid = lu_object_fid(&obj->oo_dt.do_lu);
+ struct lu_fid *tfid = &osd_oti_get(env)->oti_fid;
+ struct linkea_data ldata = { .ld_buf = (struct lu_buf *)buf };
+ struct lu_name tmpname;
+ int rc;
+ bool remote = false;
+ ENTRY;
+
+ rc = linkea_init_with_rec(&ldata);
+ if (!rc) {
+ linkea_first_entry(&ldata);
+ while (ldata.ld_lee != NULL && !remote) {
+ linkea_entry_unpack(ldata.ld_lee, &ldata.ld_reclen,
+ &tmpname, tfid);
+ if (osd_remote_fid(env, osd, tfid) > 0)
+ remote = true;
+ else
+ linkea_next_entry(&ldata);
+ }
+ } else if (rc == -ENODATA) {
+ rc = 0;
+ } else {
+ RETURN(rc);
+ }
+
+ if (lu_object_has_agent_entry(&obj->oo_dt.do_lu) && !remote) {
+ rc = osd_delete_from_remote_parent(env, osd, obj, oh, false);
+ if (rc)
+ CERROR("%s: failed to remove agent entry for "DFID
+ ": rc = %d\n", osd_name(osd), PFID(fid), rc);
+ } else if (!lu_object_has_agent_entry(&obj->oo_dt.do_lu) && remote) {
+ rc = osd_add_to_remote_parent(env, osd, obj, oh);
+ if (rc)
+ CWARN("%s: failed to create agent entry for "DFID
+ ": rc = %d\n", osd_name(osd), PFID(fid), rc);
+ }
+
+ RETURN(rc);
+}
+
int osd_xattr_set(const struct lu_env *env, struct dt_object *dt,
const struct lu_buf *buf, const char *name, int fl,
struct thandle *handle)
{
- struct osd_object *obj = osd_dt_obj(dt);
+ struct osd_object *obj = osd_dt_obj(dt);
+ struct osd_device *osd = osd_obj2dev(obj);
struct osd_thandle *oh;
int rc = 0;
ENTRY;
rc = osd_xattr_split_pfid(env, obj, oh);
if (!rc)
fl = LU_XATTR_CREATE;
+ } else if (strcmp(name, XATTR_NAME_LINK) == 0 &&
+ osd->od_remote_parent_dir != ZFS_NO_OBJECT) {
+ rc = osd_xattr_handle_linkea(env, osd, obj, buf, oh);
}
if (!rc)
return rc;
rc = -nvlist_remove(obj->oo_sa_xattr, name, DATA_TYPE_BYTE_ARRAY);
- if (rc == 0)
+ if (rc)
+ return rc;
+
+ /*
+ * only migrate delete LMV, and it needs to be done immediately, because
+ * it's used in deleting sub stripes, and if this is delayed, later when
+ * destroying the master object, it will delete sub stripes again.
+ */
+ if (!strcmp(name, XATTR_NAME_LMV))
+ rc = __osd_sa_xattr_update(env, obj, oh);
+ else
rc = __osd_sa_xattr_schedule_update(env, obj, oh);
return rc;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff