It is possibly (and occasionally useful) to have a raid1 without
persistent superblocks. The code in add_new_disk for adding a
device to such an array always tries to read a superblock.
This will obviously fail.
So do the appropriate test and call md_import_device with
appropriate args.
Signed-off-by: Neil Brown <neilb@xxxxxxxxxxxxxxx>
### Diffstat output
./drivers/md/md.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diff ./drivers/md/md.c~current~ ./drivers/md/md.c
--- ./drivers/md/md.c~current~ 2005-08-22 11:48:37.000000000 +1000
+++ ./drivers/md/md.c 2005-08-22 11:49:47.000000000 +1000
@@ -2225,8 +2225,11 @@ static int add_new_disk(mddev_t * mddev,
mdname(mddev));
return -EINVAL;
}
- rdev = md_import_device(dev, mddev->major_version,
- mddev->minor_version);
+ if (mddev->persistent)
+ rdev = md_import_device(dev, mddev->major_version,
+ mddev->minor_version);
+ else
+ rdev = md_import_device(dev, -1, -1);
if (IS_ERR(rdev)) {
printk(KERN_WARNING
"md: md_import_device returned %ld\n",
-
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