40 lines
1.3 KiB
Diff
40 lines
1.3 KiB
Diff
From: Mark Fasheh <mfasheh@suse.com>
|
|
Date: Tue Dec 1 16:15:11 PST 2009
|
|
Subject: gfs2: allow spectator mounts for migration to ocfs2
|
|
Patch-mainline: never
|
|
References: FATE#307584
|
|
|
|
Lock out all writeable gfs2 mounts. This allows only spectator mounts, which
|
|
should never modify the disks. We do this to support minimal use of GFS2 for
|
|
migration of data. No performance bugs will be fixed. Any writeable mounts
|
|
are strictly prohibited.
|
|
|
|
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
|
|
|
|
---
|
|
fs/gfs2/ops_fstype.c | 13 +++++++++++++
|
|
1 file changed, 13 insertions(+)
|
|
|
|
--- a/fs/gfs2/ops_fstype.c
|
|
+++ b/fs/gfs2/ops_fstype.c
|
|
@@ -1134,6 +1134,19 @@ static int fill_super(struct super_block
|
|
}
|
|
sdp->sd_args = *args;
|
|
|
|
+ if (!sdp->sd_args.ar_spectator || !(sb->s_flags & MS_RDONLY) ||
|
|
+ sdp->sd_args.ar_ignore_local_fs) {
|
|
+ printk(KERN_WARNING "Only read-only GFS2 mounts are "
|
|
+ "supported.\nPlease mount with the \"spectator\" and "
|
|
+ "\"ro\" mount options\n");
|
|
+ goto fail;
|
|
+ }
|
|
+
|
|
+ printk(KERN_WARNING
|
|
+ "WARNING: GFS2 mounts are ONLY supported for single-node "
|
|
+ "migration of data!\nNo performance or write bugs will be "
|
|
+ "considered.\n");
|
|
+
|
|
if (sdp->sd_args.ar_spectator) {
|
|
sb->s_flags |= MS_RDONLY;
|
|
set_bit(SDF_NORECOVERY, &sdp->sd_flags);
|