From: Adam Kwolek <adam.kwolek@xxxxxxxxx>
Patch introduces support for reshape process restart for external metadata
using metadata specific data handling methods.
It introduces recover_backup() function that restores array to stable state
It is equivalent to Grow_restart() functionality for native metadata.
Signed-off-by: Maciej Trela <maciej.trela@xxxxxxxxx>
Signed-off-by: Adam Kwolek <adam.kwolek@xxxxxxxxx>
Signed-off-by: Krzysztof Wojcik <krzysztof.wojcik@xxxxxxxxx>
---
Assemble.c | 10 ++++++++--
mdadm.h | 3 +++
2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/Assemble.c b/Assemble.c
index 8b05829..f085f7c 100644
--- a/Assemble.c
+++ b/Assemble.c
@@ -1192,7 +1192,10 @@ int Assemble(struct supertype *st, char *mddev,
fdlist[i] = -1;
}
if (!err) {
- err = Grow_restart(st, content, fdlist, bestcnt,
+ if (st->ss->external && st->ss->recover_backup)
+ err = st->ss->recover_backup(st, content);
+ else
+ err = Grow_restart(st, content, fdlist, bestcnt,
backup_file, verbose > 0);
if (err && invalid_backup) {
if (verbose > 0)
@@ -1573,7 +1576,10 @@ int assemble_container_content(struct supertype *st, int mdfd,
else
fdlist[spare++] = fd;
}
- err = Grow_restart(st, content, fdlist, spare,
+ if (st->ss->external && st->ss->recover_backup)
+ err = st->ss->recover_backup(st, content);
+ else
+ err = Grow_restart(st, content, fdlist, spare,
backup_file, verbose > 0);
while (spare > 0) {
spare--;
diff --git a/mdadm.h b/mdadm.h
index a1ae2b9..50042b0 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -785,6 +785,9 @@ extern struct superswitch {
*/
const char *(*get_disk_controller_domain)(const char *path);
+ /* for external backup area */
+ int (*recover_backup)(struct supertype *st, struct mdinfo *info);
+
int swapuuid; /* true if uuid is bigending rather than hostendian */
int external;
const char *name; /* canonical metadata name */
--
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