From: Igor Fedotov <ifedotov@mirantis.com>
Date: Fri, 26 May 2017 12:55:47 +0000 (-0700)
Subject: os/bluestore: introduce debug parameter to bypass bdev verification
X-Git-Tag: v12.1.0~225^2~1
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=07761f2a3a9a7bd1fef04c5e658e8e4204cd808e;p=ceph.git

os/bluestore: introduce debug parameter to bypass bdev verification

E.g. this allows to backup WAL/DB volumes after preconditioning and quickly rollback to that state when needed.

Signed-off-by: Igor Fedotov <ifedotov@mirantis.com>
---

diff --git a/src/common/config_opts.h b/src/common/config_opts.h
index 6d8febf0dc55..c5dceea0649e 100644
--- a/src/common/config_opts.h
+++ b/src/common/config_opts.h
@@ -1173,6 +1173,7 @@ OPTION(bluestore_debug_inject_read_err, OPT_BOOL, false)
 OPTION(bluestore_debug_randomize_serial_transaction, OPT_INT, 0)
 OPTION(bluestore_debug_omit_block_device_write, OPT_BOOL, false)
 OPTION(bluestore_debug_fsck_abort, OPT_BOOL, false)
+OPTION(bluestore_debug_permit_any_bdev_label, OPT_BOOL, false)
 OPTION(bluestore_shard_finishers, OPT_BOOL, false)
 
 OPTION(kstore_max_ops, OPT_U64, 512)
diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index 26bd3dac20e1..3904737aa0b4 100644
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -3823,7 +3823,11 @@ int BlueStore::_check_or_set_bdev_label(
     int r = _read_bdev_label(cct, path, &label);
     if (r < 0)
       return r;
-    if (label.osd_uuid != fsid) {
+    if (cct->_conf->bluestore_debug_permit_any_bdev_label) {
+      dout(20) << __func__ << " bdev " << path << " fsid " << label.osd_uuid
+	   << " and fsid " << fsid << " check bypassed" << dendl;
+    }
+    else if (label.osd_uuid != fsid) {
       derr << __func__ << " bdev " << path << " fsid " << label.osd_uuid
 	   << " does not match our fsid " << fsid << dendl;
       return -EIO;