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mds: disallow across subvolume rename

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Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
This commit is contained in:
Yan, Zheng 2020-08-05 15:37:20 +08:00
parent 34c6b4437a
commit 53348ab67f
1 changed files with 15 additions and 3 deletions
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18
src/mds/Server.cc
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@ -7878,6 +7878,21 @@ void Server::handle_client_rename(MDRequestRef& mdr)
}
*/
SnapRealm *dest_realm = nullptr;
SnapRealm *src_realm = nullptr;
if (!linkmerge) {
dest_realm = destdir->inode->find_snaprealm();
if (srcdir->inode == destdir->inode)
src_realm = dest_realm;
else
src_realm = srcdir->inode->find_snaprealm();
if (src_realm != dest_realm &&
src_realm->get_subvolume_ino() != dest_realm->get_subvolume_ino()) {
respond_to_request(mdr, -EXDEV);
return;
}
}
ceph_assert(g_conf()->mds_kill_rename_at != 1);
// -- open all srcdn inode frags, if any --
@ -7927,7 +7942,6 @@ void Server::handle_client_rename(MDRequestRef& mdr)
oldin->clear_snaprealm_global(new_srnode);
mdr->more()->desti_srnode = new_srnode;
} else if (destdnl->is_primary()) {
SnapRealm *dest_realm = destdir->inode->find_snaprealm();
snapid_t follows = dest_realm->get_newest_seq();
if (oldin->snaprealm || follows + 1 > oldin->get_oldest_snap()) {
sr_t *new_srnode = oldin->prepare_new_srnode(follows);
@ -7937,13 +7951,11 @@ void Server::handle_client_rename(MDRequestRef& mdr)
}
}
if (!mdr->more()->srci_srnode) {
SnapRealm *dest_realm = destdir->inode->find_snaprealm();
if (srci->is_projected_snaprealm_global()) {
sr_t *new_srnode = srci->prepare_new_srnode(0);
srci->record_snaprealm_parent_dentry(new_srnode, dest_realm, srcdn, srcdnl->is_primary());
mdr->more()->srci_srnode = new_srnode;
} else if (srcdnl->is_primary()) {
SnapRealm *src_realm = srcdir->inode->find_snaprealm();
snapid_t follows = src_realm->get_newest_seq();
if (src_realm != dest_realm &&
(srci->snaprealm || follows + 1 > srci->get_oldest_snap())) {