Manage: freeze recovery while adding multiple devices.

If the kernel supports it, freeze recovery over multiple adds,
so that they can all be added to the array at the same time and
be recovered in parallel.

Signed-off-by: NeilBrown <neilb@suse.de>

diff --git a/Manage.c b/Manage.c
index f53fe276e5bcd9f30fd9f14758c9a24fa1fedfd9..7deba3aa0d66ead2f41a1fffc7b6fb4f7ecdd30d 100644 (file)
--- a/Manage.c
+++ b/Manage.c
@@ -416,12 +416,15 @@ int Manage_subdevs(char *devname, int fd,
        int lfd = -1;
        int sysfd = -1;
        int count = 0; /* number of actions taken */
+       struct mdinfo info;
+       int frozen = 0;
 
        if (ioctl(fd, GET_ARRAY_INFO, &array)) {
                fprintf(stderr, Name ": cannot get array info for %s\n",
                        devname);
                goto abort;
        }
+       sysfs_init(&info, fd, 0);
 
        /* array.size is only 32 bit and may be truncated.
         * So read from sysfs if possible, and record number of sectors
@@ -629,6 +632,12 @@ int Manage_subdevs(char *devname, int fd,
                                        dv->devname, strerror(errno));
                                goto abort;
                        }
+                       if (!frozen) {
+                               if (sysfs_freeze_array(&info) == 1)
+                                       frozen = 1;
+                               else
+                                       frozen = -1;
+                       }
 
                        st = dup_super(tst);
 
@@ -1166,11 +1175,15 @@ int Manage_subdevs(char *devname, int fd,
                        break;
                }
        }
+       if (frozen > 0)
+               sysfs_set_str(&info, NULL, "sync_action","idle");
        if (test && count == 0)
                return 2;
        return 0;
 
 abort:
+       if (frozen > 0)
+               sysfs_set_str(&info, NULL, "sync_action","idle");
        return 1;
 }