LU-8900 snapshot: simulate readonly device

[fs/lustre-release.git] / lustre / mdt / mdt_coordinator.c

diff --git a/lustre/mdt/mdt_coordinator.c b/lustre/mdt/mdt_coordinator.c
index 851e1f3..a981809 100644 (file)
--- a/lustre/mdt/mdt_coordinator.c
+++ b/lustre/mdt/mdt_coordinator.c
@@ -882,6 +882,9 @@ static int mdt_hsm_cdt_start(struct mdt_device *mdt)
                       " for registered restore: %d\n",
                       mdt_obd_name(mdt), rc);
 
+       if (mdt->mdt_bottom->dd_rdonly)
+               RETURN(0);
+
        task = kthread_run(mdt_coordinator, cdt_mti, "hsm_cdtr");
        if (IS_ERR(task)) {
                rc = PTR_ERR(task);
@@ -916,6 +919,9 @@ int mdt_hsm_cdt_stop(struct mdt_device *mdt)
        struct mdt_thread_info          *cdt_mti;
        ENTRY;
 
+       if (mdt->mdt_opts.mo_coordinator == 0)
+               RETURN(0);
+
        if (cdt->cdt_state == CDT_STOPPED) {
                CERROR("%s: Coordinator already stopped\n",
                       mdt_obd_name(mdt));