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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-02-06 08:35:30 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-02-06 08:35:30 +0100
commitd38e781ea035456c742605fb21d0dd3c755b7b0b (patch)
tree53bda2561a47f747ab4caf1119993cc181780db7 /fs/ceph/snap.c
parentmei: Move uuid_le_cmp() to its only user (diff)
parentLinux 6.2-rc7 (diff)
downloadlinux-d38e781ea035456c742605fb21d0dd3c755b7b0b.tar.xz
linux-d38e781ea035456c742605fb21d0dd3c755b7b0b.zip
Merge 6.2-rc7 into char-misc-next
We need the char-misc driver fixes in here as other patches depend on them. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ceph/snap.c')
-rw-r--r--fs/ceph/snap.c36
1 files changed, 34 insertions, 2 deletions
diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c
index e4151852184e..87007203f130 100644
--- a/fs/ceph/snap.c
+++ b/fs/ceph/snap.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/ceph/ceph_debug.h>
+#include <linux/fs.h>
#include <linux/sort.h>
#include <linux/slab.h>
#include <linux/iversion.h>
@@ -766,8 +767,10 @@ int ceph_update_snap_trace(struct ceph_mds_client *mdsc,
struct ceph_snap_realm *realm;
struct ceph_snap_realm *first_realm = NULL;
struct ceph_snap_realm *realm_to_rebuild = NULL;
+ struct ceph_client *client = mdsc->fsc->client;
int rebuild_snapcs;
int err = -ENOMEM;
+ int ret;
LIST_HEAD(dirty_realms);
lockdep_assert_held_write(&mdsc->snap_rwsem);
@@ -884,6 +887,27 @@ fail:
if (first_realm)
ceph_put_snap_realm(mdsc, first_realm);
pr_err("%s error %d\n", __func__, err);
+
+ /*
+ * When receiving a corrupted snap trace we don't know what
+ * exactly has happened in MDS side. And we shouldn't continue
+ * writing to OSD, which may corrupt the snapshot contents.
+ *
+ * Just try to blocklist this kclient and then this kclient
+ * must be remounted to continue after the corrupted metadata
+ * fixed in the MDS side.
+ */
+ WRITE_ONCE(mdsc->fsc->mount_state, CEPH_MOUNT_FENCE_IO);
+ ret = ceph_monc_blocklist_add(&client->monc, &client->msgr.inst.addr);
+ if (ret)
+ pr_err("%s failed to blocklist %s: %d\n", __func__,
+ ceph_pr_addr(&client->msgr.inst.addr), ret);
+
+ WARN(1, "%s: %s%sdo remount to continue%s",
+ __func__, ret ? "" : ceph_pr_addr(&client->msgr.inst.addr),
+ ret ? "" : " was blocklisted, ",
+ err == -EIO ? " after corrupted snaptrace is fixed" : "");
+
return err;
}
@@ -984,6 +1008,7 @@ void ceph_handle_snap(struct ceph_mds_client *mdsc,
__le64 *split_inos = NULL, *split_realms = NULL;
int i;
int locked_rwsem = 0;
+ bool close_sessions = false;
/* decode */
if (msg->front.iov_len < sizeof(*h))
@@ -1092,8 +1117,12 @@ skip_inode:
* update using the provided snap trace. if we are deleting a
* snap, we can avoid queueing cap_snaps.
*/
- ceph_update_snap_trace(mdsc, p, e,
- op == CEPH_SNAP_OP_DESTROY, NULL);
+ if (ceph_update_snap_trace(mdsc, p, e,
+ op == CEPH_SNAP_OP_DESTROY,
+ NULL)) {
+ close_sessions = true;
+ goto bad;
+ }
if (op == CEPH_SNAP_OP_SPLIT)
/* we took a reference when we created the realm, above */
@@ -1112,6 +1141,9 @@ bad:
out:
if (locked_rwsem)
up_write(&mdsc->snap_rwsem);
+
+ if (close_sessions)
+ ceph_mdsc_close_sessions(mdsc);
return;
}