ceph: fix open for write on clustered mds (7421ab80) · Commits · 戴 / test

Normally when we open a file we already have a cap, and simply update the wanted set. However, if we open a file for write, but don't have an auth cap, that doesn't work; we need to open a new cap with the auth MDS. Only reuse existing caps if we are opening for read or the existing cap is auth. Signed-off-by:

Sage Weil <sage@newdream.net>

fs/ceph/file.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -154,11 +154,13 @@ int ceph_open(struct inode inode, struct file file)
		}

		/*
		* No need to block if we have any caps. Update wanted set
		* No need to block if we have caps on the auth MDS (for
		* write) or any MDS (for read). Update wanted set
		* asynchronously.
		*/
		spin_lock(&inode->i_lock);
		if (__ceph_is_any_real_caps(ci)) {
		if (__ceph_is_any_real_caps(ci) &&
		(((fmode & CEPH_FILE_MODE_WR) == 0) \|\| ci->i_auth_cap)) {
		int mds_wanted = __ceph_caps_mds_wanted(ci);
		int issued = __ceph_caps_issued(ci, NULL);

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