When reshape was invoked during initramfs start-up stage
array is pushed in to reshape state already, so read only
state cannot be set again. To verify if reshape continuation should
be allowed sync_action sysfs key is tested and number of existing mdadm
instances is checked again.
Signed-off-by: Adam Kwolek <adam.kwolek@xxxxxxxxx>
---
Grow.c | 19 +++++++++++++++++--
1 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/Grow.c b/Grow.c
index 4d2c361..b331287 100644
--- a/Grow.c
+++ b/Grow.c
@@ -3714,8 +3714,23 @@ int Grow_continue(int mdfd, struct supertype *st, struct mdinfo *info,
int err;
err = sysfs_set_str(info, NULL, "array_state", "readonly");
- if (err)
- return err;
+ if (err) {
+ /* check if array is set in to reshape stare,
+ * and current mdadm instance is the only one
+ */
+ if ((sysfs_get_str(info, NULL, "sync_action",
+ buf, 40) == 8) &&
+ (count_mdadms() == 1)) {
+ dprintf("Warning: Grow_continue() cannot set array in"
+ "to read only state [sync_action is %s].",
+ buf);
+ if (strncmp(buf, "reshape", 7))
+ return err;
+ dprintf("Allow to continue.\n");
+ } else
+ return err;
+ }
+
if (st->ss->external) {
fmt_devname(buf, st->container_dev);
container = buf;
--
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