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-rw-r--r--fs/btrfs/volumes.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 3b31f558f2dc..fd30dc3d59c8 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -683,6 +683,16 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
device->bdev = bdev_handle->bdev;
clear_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
+ if (device->devt != device->bdev->bd_dev) {
+ btrfs_warn(NULL,
+ "device %s maj:min changed from %d:%d to %d:%d",
+ device->name->str, MAJOR(device->devt),
+ MINOR(device->devt), MAJOR(device->bdev->bd_dev),
+ MINOR(device->bdev->bd_dev));
+
+ device->devt = device->bdev->bd_dev;
+ }
+
fs_devices->open_devices++;
if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state) &&
device->devid != BTRFS_DEV_REPLACE_DEVID) {