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Commit 7421ab80 authored by Sage Weil's avatar Sage Weil
Browse files

ceph: fix open for write on clustered mds 



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: default avatarSage Weil <sage@newdream.net>
parent d8b16b3d

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);