*/
/*
* This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
*
* lustre/mdd/mdd_object.c
*
reclen = llog_data_len(LLOG_CHANGELOG_HDR_SZ +
changelog_rec_offset(clf_flags & CLF_SUPPORTED,
xflags & CLFE_SUPPORTED));
- buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_big_buf, reclen);
+ buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_chlg_buf, reclen);
if (buf->lb_buf == NULL)
RETURN(-ENOMEM);
rec = buf->lb_buf;
{
struct mdd_device *mdd = mdo2mdd(md_obj);
struct mdd_object *obj = md2mdd_obj(md_obj);
- struct mdd_object *vic = md2mdd_obj(mrd->mrd_obj);
+ struct mdd_object *vic = NULL;
struct lu_buf *buf = &mdd_env_info(env)->mti_buf[0];
struct lu_buf *buf_save = &mdd_env_info(env)->mti_buf[1];
struct lu_buf *buf_vic = &mdd_env_info(env)->mti_buf[2];
ENTRY;
- rc = lu_fid_cmp(mdd_object_fid(obj), mdd_object_fid(vic));
- if (rc == 0) /* same fid */
- RETURN(-EPERM);
+ /**
+ * NULL @mrd_obj means mirror deleting, and use NULL vic to indicate
+ * mirror deleting
+ */
+ if (mrd->mrd_obj)
+ vic = md2mdd_obj(mrd->mrd_obj);
handle = mdd_trans_create(env, mdd);
if (IS_ERR(handle))
RETURN(PTR_ERR(handle));
- if (rc > 0) {
- mdd_write_lock(env, obj, DT_TGT_CHILD);
- mdd_write_lock(env, vic, DT_TGT_CHILD);
- } else {
- mdd_write_lock(env, vic, DT_TGT_CHILD);
- mdd_write_lock(env, obj, DT_TGT_CHILD);
- }
-
/* get EA of mirrored file */
memset(buf_save, 0, sizeof(*buf));
rc = mdd_stripe_get(env, obj, buf_save, XATTR_NAME_LOV);
if (rc < 0)
- GOTO(out, rc);
+ GOTO(stop, rc);
lcm = buf_save->lb_buf;
if (le32_to_cpu(lcm->lcm_magic) != LOV_MAGIC_COMP_V1)
- GOTO(out, rc = -EINVAL);
+ GOTO(stop, rc = -EINVAL);
/**
* Extract the mirror with specified mirror id, and store the splitted
- * mirror layout to the victim file.
+ * mirror layout to the victim buffer.
*/
memset(buf, 0, sizeof(*buf));
memset(buf_vic, 0, sizeof(*buf_vic));
rc = mdd_split_ea(lcm, mrd->mrd_mirror_id, buf, buf_vic);
if (rc < 0)
- GOTO(out, rc);
+ GOTO(stop, rc);
+ /**
+ * @buf stores layout w/o the specified mirror, @buf_vic stores the
+ * splitted mirror
+ */
dom_stripe = mdd_lmm_dom_size(buf_vic->lb_buf) > 0;
- rc = mdd_declare_xattr_set(env, mdd, obj, buf, XATTR_NAME_LOV,
- LU_XATTR_SPLIT, handle);
- if (rc)
- GOTO(out, rc);
- rc = mdd_declare_xattr_set(env, mdd, vic, buf_vic, XATTR_NAME_LOV,
- LU_XATTR_SPLIT, handle);
- if (rc)
- GOTO(out, rc);
+ if (vic) {
+ /**
+ * non delete mirror split
+ *
+ * declare obj set remaining layout in @buf, will set obj's
+ * in-memory layout
+ */
+ rc = mdd_declare_xattr_set(env, mdd, obj, buf, XATTR_NAME_LOV,
+ LU_XATTR_SPLIT, handle);
+ if (rc)
+ GOTO(stop, rc);
+
+ /* declare vic set splitted layout in @buf_vic */
+ rc = mdd_declare_xattr_set(env, mdd, vic, buf_vic,
+ XATTR_NAME_LOV, LU_XATTR_SPLIT,
+ handle);
+ if (rc)
+ GOTO(stop, rc);
+ } else {
+ /**
+ * declare delete mirror objects in @buf_vic, will change obj's
+ * in-memory layout
+ */
+ rc = mdd_declare_xattr_set(env, mdd, obj, buf_vic,
+ XATTR_NAME_LOV, LU_XATTR_PURGE,
+ handle);
+ if (rc)
+ GOTO(stop, rc);
+
+ /* declare obj set remaining layout in @buf */
+ rc = mdd_declare_xattr_set(env, mdd, obj, buf,
+ XATTR_NAME_LOV, LU_XATTR_SPLIT,
+ handle);
+ if (rc)
+ GOTO(stop, rc);
+ }
rc = mdd_trans_start(env, mdd, handle);
if (rc)
- GOTO(out, rc);
+ GOTO(stop, rc);
+
+ if (vic) {
+ /* don't use the same file to save the splitted mirror */
+ rc = lu_fid_cmp(mdd_object_fid(obj), mdd_object_fid(vic));
+ if (rc == 0)
+ GOTO(stop, rc = -EPERM);
+ if (rc > 0) {
+ mdd_write_lock(env, obj, DT_TGT_CHILD);
+ mdd_write_lock(env, vic, DT_TGT_CHILD);
+ } else {
+ mdd_write_lock(env, vic, DT_TGT_CHILD);
+ mdd_write_lock(env, obj, DT_TGT_CHILD);
+ }
+ } else {
+ mdd_write_lock(env, obj, DT_TGT_CHILD);
+ }
+
+ /* set obj's layout in @buf */
rc = mdo_xattr_set(env, obj, buf, XATTR_NAME_LOV, LU_XATTR_REPLACE,
handle);
if (rc)
- GOTO(out, rc);
+ GOTO(unlock, rc);
- rc = mdo_xattr_set(env, vic, buf_vic, XATTR_NAME_LOV, LU_XATTR_CREATE,
- handle);
- if (rc)
- GOTO(out_restore, rc);
+ if (vic) {
+ /* set vic's layout in @buf_vic */
+ rc = mdo_xattr_set(env, vic, buf_vic, XATTR_NAME_LOV,
+ LU_XATTR_CREATE, handle);
+ if (rc)
+ GOTO(out_restore, rc);
+ } else {
+ /* delete mirror objects */
+ rc = mdo_xattr_set(env, obj, buf_vic, XATTR_NAME_LOV,
+ LU_XATTR_PURGE, handle);
+ if (rc)
+ GOTO(out_restore, rc);
+ }
rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, obj, handle,
NULL);
if (rc)
- GOTO(out, rc);
+ GOTO(out_restore, rc);
- rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, vic, handle,
- NULL);
- if (rc)
- GOTO(out, rc);
- EXIT;
+ if (vic) {
+ rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, vic,
+ handle, NULL);
+ if (rc)
+ GOTO(out_restore, rc);
+ }
out_restore:
if (rc) {
- /* restore obj's layout */
+ /* restore obj's in-memory and on-disk layout */
int rc2 = mdo_xattr_set(env, obj, buf_save, XATTR_NAME_LOV,
LU_XATTR_REPLACE, handle);
if (rc2)
- CERROR("%s: failed rollback "DFID" layout: file state unkonwn: rc = %d\n",
+ CERROR("%s: failed rollback "DFID
+ " layout: file state unknown: rc = %d\n",
mdd_obj_dev_name(obj),
- PFID(mdd_object_fid(obj)), rc2);
+ PFID(mdd_object_fid(obj)), rc);
}
-out:
+
+unlock:
+ mdd_write_unlock(env, obj);
+ if (vic)
+ mdd_write_unlock(env, vic);
+stop:
rc = mdd_trans_stop(env, mdd, rc, handle);
/* Truncate local DOM data if all went well */
if (!rc && dom_stripe)
mdd_dom_data_truncate(env, mdd, obj);
- mdd_write_unlock(env, obj);
- mdd_write_unlock(env, vic);
lu_buf_free(buf_save);
lu_buf_free(buf);
lu_buf_free(buf_vic);
if (buf->lb_len != sizeof(*mrd))
RETURN(-EINVAL);
- rc = mdd_layout_merge_allowed(env, obj, victim);
- if (rc)
- RETURN(rc);
- if (fl == LU_XATTR_MERGE)
+ if (fl == LU_XATTR_MERGE) {
+ rc = mdd_layout_merge_allowed(env, obj, victim);
+ if (rc)
+ RETURN(rc);
/* merge layout of victim as a mirror of obj's. */
rc = mdd_xattr_merge(env, obj, victim);
- else
+ } else {
rc = mdd_xattr_split(env, obj, mrd);
+ }
RETURN(rc);
}
lustre_som_swab(som);
if (som->lsa_valid & SOM_FL_STRICT)
fl = LU_XATTR_REPLACE;
+
+ if (mlc->mlc_opc == MD_LAYOUT_WRITE &&
+ mlc->mlc_intent->li_extent.e_end > som->lsa_size) {
+ som->lsa_size = mlc->mlc_intent->li_extent.e_end + 1;
+ fl = LU_XATTR_REPLACE;
+ }
}
rc = mdd_declare_layout_change(env, mdd, obj, mlc, handle);
struct thandle *handle)
{
struct mdd_device *mdd = mdd_obj2mdd_dev(obj);
+ struct lu_buf *som_buf = &mdd_env_info(env)->mti_buf[1];
+ struct lustre_som_attrs *som = &mlc->mlc_som;
+ int fl = 0;
int rc;
ENTRY;
* resync state. */
break;
case MD_LAYOUT_WRITE:
- /* legal race for concurrent write, the file state has been
- * changed by another client. */
+ /**
+ * legal race for concurrent write, the file state has been
+ * changed by another client. Or a jump over file size and
+ * write.
+ */
+ som_buf->lb_buf = som;
+ som_buf->lb_len = sizeof(*som);
+ rc = mdo_xattr_get(env, obj, som_buf, XATTR_NAME_SOM);
+ if (rc < 0 && rc != -ENODATA)
+ RETURN(rc);
+
+ if (rc > 0) {
+ lustre_som_swab(som);
+ if (mlc->mlc_intent->li_extent.e_end > som->lsa_size) {
+ som->lsa_size =
+ mlc->mlc_intent->li_extent.e_end + 1;
+ fl = LU_XATTR_REPLACE;
+ }
+ }
break;
default:
RETURN(-EBUSY);
if (rc)
GOTO(out, rc);
+ if (fl) {
+ rc = mdd_declare_xattr_set(env, mdd, obj, som_buf,
+ XATTR_NAME_SOM, fl, handle);
+ if (rc)
+ GOTO(out, rc);
+ }
+
rc = mdd_trans_start(env, mdd, handle);
if (rc)
GOTO(out, rc);
mdd_write_lock(env, obj, DT_TGT_CHILD);
rc = mdo_layout_change(env, obj, mlc, handle);
+ if (!rc && fl) {
+ som->lsa_valid = SOM_FL_STALE;
+ lustre_som_swab(som);
+ rc = mdo_xattr_set(env, obj, som_buf, XATTR_NAME_SOM,
+ fl, handle);
+ }
mdd_write_unlock(env, obj);
if (rc)
GOTO(out, rc);
nc->do_ops->do_ah_init(env, hint, np, nc, attr->la_mode & S_IFMT);
}
-static int accmode(const struct lu_env *env, const struct lu_attr *la,
- u64 open_flags)
+static int mdd_accmode(const struct lu_env *env, const struct lu_attr *la,
+ u64 open_flags)
{
/* Sadly, NFSD reopens a file repeatedly during operation, so the
* "acc_mode = 0" allowance for newly-created files isn't honoured.
const struct lu_attr *attr, u64 open_flags,
int is_replay)
{
- int mode, rc;
+ unsigned int may_mask;
+ int rc;
ENTRY;
/* EEXIST check, also opening of *open* orphans is allowed so we can
if (S_ISLNK(attr->la_mode))
RETURN(-ELOOP);
- mode = accmode(env, attr, open_flags);
+ may_mask = mdd_accmode(env, attr, open_flags);
- if (S_ISDIR(attr->la_mode) && (mode & MAY_WRITE))
+ if (S_ISDIR(attr->la_mode) && (may_mask & MAY_WRITE))
RETURN(-EISDIR);
if (!(open_flags & MDS_OPEN_CREATED)) {
- rc = mdd_permission_internal(env, obj, attr, mode);
+ rc = mdd_permission_internal(env, obj, attr, may_mask);
if (rc)
RETURN(rc);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff