* vim:expandtab:shiftwidth=8:tabstop=8:
*
* linux/mds/mds_reint.c
- *
+ *
* Lustre Metadata Server (mds) reintegration routines
- *
+ *
* Copyright (C) 2002 Cluster File Systems, Inc.
* author: Peter Braam <braam@clusterfs.com>
*
static int mds_reint_setattr(struct mds_update_record *rec, struct ptlrpc_request *req)
{
+ struct dentry *de;
struct inode *inode;
- struct dentry *de;
- de = mds_fid2dentry(&req->rq_obd->u.mds, rec->ur_fid1, NULL);
+ de = mds_fid2dentry(&req->rq_obd->u.mds, rec->ur_fid1, NULL);
if (IS_ERR(de) || OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_SETATTR)) {
req->rq_rephdr->status = -ESTALE;
RETURN(0);
- }
+ }
inode = de->d_inode;
CDEBUG(D_INODE, "ino %ld\n", inode->i_ino);
- /* a _really_ horrible hack to avoid removing the data stored
- in the block pointers; this data is the object id
+ /* a _really_ horrible hack to avoid removing the data stored
+ in the block pointers; this data is the object id
this will go into an extended attribute at some point.
- */
- if ( rec->ur_iattr.ia_valid & ATTR_SIZE ) {
- /* ATTR_SIZE would invoke truncate: clear it */
- rec->ur_iattr.ia_valid &= ~ATTR_SIZE;
+ */
+ if ( rec->ur_iattr.ia_valid & ATTR_SIZE ) {
+ /* ATTR_SIZE would invoke truncate: clear it */
+ rec->ur_iattr.ia_valid &= ~ATTR_SIZE;
inode->i_size = rec->ur_iattr.ia_size;
/* an _even_more_ horrible hack to make this hack work with
if (!strcmp(inode->i_sb->s_type->name, "ext3"))
inode->u.ext3_i.i_disksize = inode->i_size;
- /* make sure _something_ gets set - so new inode
- goes to disk (probably won't work over XFS */
- if (!rec->ur_iattr.ia_valid & ATTR_MODE) {
- rec->ur_iattr.ia_valid |= ATTR_MODE;
- rec->ur_iattr.ia_mode = inode->i_mode;
- }
- }
+ /* make sure _something_ gets set - so new inode
+ goes to disk (probably won't work over XFS */
+ if (!rec->ur_iattr.ia_valid & ATTR_MODE) {
+ rec->ur_iattr.ia_valid |= ATTR_MODE;
+ rec->ur_iattr.ia_mode = inode->i_mode;
+ }
+ }
OBD_FAIL_WRITE(OBD_FAIL_MDS_REINT_SETATTR_WRITE);
if ( inode->i_op->setattr ) {
- req->rq_rephdr->status =
+ req->rq_rephdr->status =
inode->i_op->setattr(de, &rec->ur_iattr);
- } else {
- req->rq_rephdr->status =
+ } else {
+ req->rq_rephdr->status =
inode_setattr(inode, &rec->ur_iattr);
- }
+ }
- l_dput(de);
- EXIT;
- return 0;
+ l_dput(de);
+ RETURN(0);
}
-/*
+/*
XXX nasty hack: store the object id in the first two
- direct block spots
+ direct block spots
*/
static inline void mds_store_objid(struct inode *inode, __u64 *id)
{
/* FIXME: it is only by luck that this works on ext3 */
- memcpy(&inode->u.ext2_i.i_data, id, sizeof(*id));
+ memcpy(&inode->u.ext2_i.i_data, id, sizeof(*id));
}
-static int mds_reint_create(struct mds_update_record *rec,
- struct ptlrpc_request *req)
+static int mds_reint_create(struct mds_update_record *rec,
+ struct ptlrpc_request *req)
{
- int type = rec->ur_mode & S_IFMT;
+ int type = rec->ur_mode & S_IFMT;
struct dentry *de = NULL;
- struct mds_rep *rep = req->rq_rep.mds;
+ struct mds_rep *rep = req->rq_rep.mds;
struct dentry *dchild = NULL;
- int rc;
- ENTRY;
+ int rc = 0;
+ ENTRY;
- de = mds_fid2dentry(&req->rq_obd->u.mds, rec->ur_fid1, NULL);
+ de = mds_fid2dentry(&req->rq_obd->u.mds, rec->ur_fid1, NULL);
if (IS_ERR(de) || OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_CREATE)) {
- BUG();
+ LBUG();
GOTO(out_reint_create, (rc = -ESTALE));
- }
+ }
CDEBUG(D_INODE, "ino %ld\n", de->d_inode->i_ino);
- dchild = lookup_one_len(rec->ur_name, de, rec->ur_namelen - 1);
+ dchild = lookup_one_len(rec->ur_name, de, rec->ur_namelen - 1);
if (IS_ERR(dchild)) {
CERROR("child lookup error %ld\n", PTR_ERR(dchild));
- BUG();
+ LBUG();
GOTO(out_reint_create, (rc = -ESTALE));
- }
+ }
- if (dchild->d_inode) {
- CERROR("child exists (dir %ld, name %s)\n",
- de->d_inode->i_ino, rec->ur_name);
- BUG();
+ if (dchild->d_inode) {
+ CERROR("child exists (dir %ld, name %s)\n",
+ de->d_inode->i_ino, rec->ur_name);
+ LBUG();
GOTO(out_reint_create, (rc = -EEXIST));
- }
+ }
OBD_FAIL_WRITE(OBD_FAIL_MDS_REINT_CREATE_WRITE);
- switch (type) {
- case S_IFREG: {
- rc = vfs_create(de->d_inode, dchild, rec->ur_mode);
- EXIT;
- break;
- }
- case S_IFDIR: {
- rc = vfs_mkdir(de->d_inode, dchild, rec->ur_mode);
- EXIT;
- break;
- }
- case S_IFLNK: {
- rc = vfs_symlink(de->d_inode, dchild, rec->ur_tgt);
- EXIT;
- break;
- }
- case S_IFCHR:
- case S_IFBLK:
- case S_IFIFO:
- case S_IFSOCK: {
- int rdev = rec->ur_id;
- rc = vfs_mknod(de->d_inode, dchild, rec->ur_mode, rdev);
- EXIT;
- break;
- }
- }
-
- if (!rc) {
- if (type == S_IFREG)
- mds_store_objid(dchild->d_inode, &rec->ur_id);
- dchild->d_inode->i_atime = rec->ur_time;
- dchild->d_inode->i_ctime = rec->ur_time;
- dchild->d_inode->i_mtime = rec->ur_time;
- dchild->d_inode->i_uid = rec->ur_uid;
- dchild->d_inode->i_gid = rec->ur_gid;
- rep->ino = dchild->d_inode->i_ino;
- }
+ switch (type) {
+ case S_IFREG: {
+ rc = vfs_create(de->d_inode, dchild, rec->ur_mode);
+ EXIT;
+ break;
+ }
+ case S_IFDIR: {
+ rc = vfs_mkdir(de->d_inode, dchild, rec->ur_mode);
+ EXIT;
+ break;
+ }
+ case S_IFLNK: {
+ rc = vfs_symlink(de->d_inode, dchild, rec->ur_tgt);
+ EXIT;
+ break;
+ }
+ case S_IFCHR:
+ case S_IFBLK:
+ case S_IFIFO:
+ case S_IFSOCK: {
+ int rdev = rec->ur_id;
+ rc = vfs_mknod(de->d_inode, dchild, rec->ur_mode, rdev);
+ EXIT;
+ break;
+ }
+ }
+
+ if (!rc) {
+ if (type == S_IFREG)
+ mds_store_objid(dchild->d_inode, &rec->ur_id);
+ dchild->d_inode->i_atime = rec->ur_time;
+ dchild->d_inode->i_ctime = rec->ur_time;
+ dchild->d_inode->i_mtime = rec->ur_time;
+ dchild->d_inode->i_uid = rec->ur_uid;
+ dchild->d_inode->i_gid = rec->ur_gid;
+ rep->ino = dchild->d_inode->i_ino;
+ rep->generation = dchild->d_inode->i_generation;
+ } else {
+ CERROR("error during create: %d\n", rc);
+ LBUG();
+ }
out_reint_create:
req->rq_rephdr->status = rc;
RETURN(0);
}
-static int mds_reint_unlink(struct mds_update_record *rec,
- struct ptlrpc_request *req)
+static int mds_reint_unlink(struct mds_update_record *rec,
+ struct ptlrpc_request *req)
{
struct dentry *de = NULL;
struct dentry *dchild = NULL;
int rc = 0;
- ENTRY;
+ ENTRY;
- de = mds_fid2dentry(&req->rq_obd->u.mds, rec->ur_fid1, NULL);
+ de = mds_fid2dentry(&req->rq_obd->u.mds, rec->ur_fid1, NULL);
if (IS_ERR(de) || OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNLINK)) {
- BUG();
+ LBUG();
GOTO(out_unlink, (rc = -ESTALE));
- }
+ }
CDEBUG(D_INODE, "ino %ld\n", de->d_inode->i_ino);
- dchild = lookup_one_len(rec->ur_name, de, rec->ur_namelen - 1);
+ dchild = lookup_one_len(rec->ur_name, de, rec->ur_namelen - 1);
if (IS_ERR(dchild)) {
CERROR("child lookup error %ld\n", PTR_ERR(dchild));
- BUG();
+ LBUG();
GOTO(out_unlink, (rc = -ESTALE));
- }
+ }
- if (!dchild->d_inode) {
- CERROR("child doesn't exist (dir %ld, name %s\n",
- de->d_inode->i_ino, rec->ur_name);
- BUG();
+ if (!dchild->d_inode) {
+ CERROR("child doesn't exist (dir %ld, name %s\n",
+ de->d_inode->i_ino, rec->ur_name);
+ LBUG();
GOTO(out_unlink, (rc = -ESTALE));
- }
+ }
+
+ if (dchild->d_inode->i_ino != rec->ur_fid2->id)
+ LBUG();
+ if (dchild->d_inode->i_generation != rec->ur_fid2->generation)
+ LBUG();
OBD_FAIL_WRITE(OBD_FAIL_MDS_REINT_UNLINK_WRITE);
- switch (dchild->d_inode->i_mode & S_IFMT) {
- case S_IFDIR:
- rc = vfs_rmdir(de->d_inode, dchild);
- EXIT;
- break;
- default:
+ switch (dchild->d_inode->i_mode & S_IFMT) {
+ case S_IFDIR:
+ rc = vfs_rmdir(de->d_inode, dchild);
+ EXIT;
+ break;
+ default:
rc = vfs_unlink(de->d_inode, dchild);
- EXIT;
- break;
- }
+ EXIT;
+ break;
+ }
out_unlink:
req->rq_rephdr->status = rc;
RETURN(0);
}
-static int mds_reint_link(struct mds_update_record *rec,
- struct ptlrpc_request *req)
+static int mds_reint_link(struct mds_update_record *rec,
+ struct ptlrpc_request *req)
{
struct dentry *de_src = NULL;
struct dentry *de_tgt_dir = NULL;
GOTO(out_link, (rc = -ESTALE));
}
- de_tgt_dir = mds_fid2dentry(&req->rq_obd->u.mds, rec->ur_fid2, NULL);
+ de_tgt_dir = mds_fid2dentry(&req->rq_obd->u.mds, rec->ur_fid2, NULL);
if (IS_ERR(de_tgt_dir)) {
GOTO(out_link, (rc = -ESTALE));
- }
+ }
- dchild = lookup_one_len(rec->ur_name, de_tgt_dir, rec->ur_namelen - 1);
- if (IS_ERR(dchild)) {
+ dchild = lookup_one_len(rec->ur_name, de_tgt_dir, rec->ur_namelen - 1);
+ if (IS_ERR(dchild)) {
CERROR("child lookup error %ld\n", PTR_ERR(dchild));
- GOTO(out_link, (rc = -ESTALE));
- }
+ GOTO(out_link, (rc = -ESTALE));
+ }
- if (dchild->d_inode) {
- CERROR("child exists (dir %ld, name %s\n",
- de_tgt_dir->d_inode->i_ino, rec->ur_name);
- GOTO(out_link, (rc = -EEXIST));
- }
+ if (dchild->d_inode) {
+ CERROR("child exists (dir %ld, name %s\n",
+ de_tgt_dir->d_inode->i_ino, rec->ur_name);
+ GOTO(out_link, (rc = -EEXIST));
+ }
OBD_FAIL_WRITE(OBD_FAIL_MDS_REINT_LINK_WRITE);
- rc = vfs_link(de_src, de_tgt_dir->d_inode, dchild);
+ rc = vfs_link(de_src, de_tgt_dir->d_inode, dchild);
EXIT;
out_link:
- req->rq_rephdr->status = rc;
- l_dput(de_src);
- l_dput(de_tgt_dir);
- l_dput(dchild);
- return 0;
+ req->rq_rephdr->status = rc;
+ l_dput(de_src);
+ l_dput(de_tgt_dir);
+ l_dput(dchild);
+ return 0;
}
-static int mds_reint_rename(struct mds_update_record *rec,
- struct ptlrpc_request *req)
+static int mds_reint_rename(struct mds_update_record *rec,
+ struct ptlrpc_request *req)
{
- struct dentry *de_srcdir = NULL;
- struct dentry *de_tgtdir = NULL;
- struct dentry *de_old = NULL;
- struct dentry *de_new = NULL;
- int rc = 0;
- ENTRY;
-
- de_srcdir = mds_fid2dentry(&req->rq_obd->u.mds, rec->ur_fid1, NULL);
+ struct dentry *de_srcdir = NULL;
+ struct dentry *de_tgtdir = NULL;
+ struct dentry *de_old = NULL;
+ struct dentry *de_new = NULL;
+ int rc = 0;
+ ENTRY;
+
+ de_srcdir = mds_fid2dentry(&req->rq_obd->u.mds, rec->ur_fid1, NULL);
if (IS_ERR(de_srcdir)) {
GOTO(out_rename, (rc = -ESTALE));
- }
+ }
- de_tgtdir = mds_fid2dentry(&req->rq_obd->u.mds, rec->ur_fid2, NULL);
+ de_tgtdir = mds_fid2dentry(&req->rq_obd->u.mds, rec->ur_fid2, NULL);
if (IS_ERR(de_tgtdir)) {
GOTO(out_rename, (rc = -ESTALE));
- }
+ }
- de_old = lookup_one_len(rec->ur_name, de_srcdir, rec->ur_namelen - 1);
+ de_old = lookup_one_len(rec->ur_name, de_srcdir, rec->ur_namelen - 1);
if (IS_ERR(de_old)) {
CERROR("child lookup error %ld\n", PTR_ERR(de_old));
GOTO(out_rename, (rc = -ESTALE));
- }
+ }
- de_new = lookup_one_len(rec->ur_tgt, de_tgtdir, rec->ur_tgtlen - 1);
+ de_new = lookup_one_len(rec->ur_tgt, de_tgtdir, rec->ur_tgtlen - 1);
if (IS_ERR(de_new)) {
CERROR("child lookup error %ld\n", PTR_ERR(de_new));
GOTO(out_rename, (rc = -ESTALE));
- }
+ }
OBD_FAIL_WRITE(OBD_FAIL_MDS_REINT_RENAME_WRITE);
- rc = vfs_rename(de_srcdir->d_inode, de_old, de_tgtdir->d_inode, de_new);
+ rc = vfs_rename(de_srcdir->d_inode, de_old, de_tgtdir->d_inode, de_new);
EXIT;
out_rename:
- req->rq_rephdr->status = rc;
- l_dput(de_new);
- l_dput(de_old);
- l_dput(de_tgtdir);
- l_dput(de_srcdir);
- return 0;
+ req->rq_rephdr->status = rc;
+ l_dput(de_new);
+ l_dput(de_old);
+ l_dput(de_tgtdir);
+ l_dput(de_srcdir);
+ return 0;
}
-typedef int (*mds_reinter)(struct mds_update_record *, struct ptlrpc_request*);
+typedef int (*mds_reinter)(struct mds_update_record *, struct ptlrpc_request*);
static mds_reinter reinters[REINT_MAX+1] = {
[REINT_SETATTR] mds_reint_setattr,
int mds_reint_rec(struct mds_update_record *rec, struct ptlrpc_request *req)
{
- int rc;
+ int rc;
if (rec->ur_opcode < 0 || rec->ur_opcode > REINT_MAX) {
CERROR("opcode %d not valid\n", rec->ur_opcode);
rc = req->rq_status = -EINVAL;
RETURN(rc);
- }
+ }
- rc = mds_pack_rep(NULL, 0, NULL, 0, &req->rq_rephdr, &req->rq_rep,
- &req->rq_replen, &req->rq_repbuf);
+ rc = mds_pack_rep(NULL, 0, NULL, 0, &req->rq_rephdr, &req->rq_rep,
+ &req->rq_replen, &req->rq_repbuf);
if (rc) {
CERROR("mds: out of memory\n");
rc = req->rq_status = -ENOMEM;
RETURN(rc);
- }
- req->rq_rephdr->xid = req->rq_reqhdr->xid;
-
- rc = reinters[rec->ur_opcode](rec, req);
- return rc;
-}
+ }
+ req->rq_rephdr->xid = req->rq_reqhdr->xid;
+ rc = reinters[rec->ur_opcode](rec, req);
+ return rc;
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff