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Btrfs: do not resize a seeding device
author
Liu Bo
<liubo2009@cn.fujitsu.com>
Thu, 14 Jun 2012 08:23:19 +0000
(
02:23
-0600)
committer
Chris Mason
<chris.mason@fusionio.com>
Fri, 15 Jun 2012 15:42:26 +0000
(11:42 -0400)
Seeding devices are not supposed to change any more.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
fs/btrfs/ioctl.c
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diff --git
a/fs/btrfs/ioctl.c
b/fs/btrfs/ioctl.c
index a98f7d252829aa14ef6c530885d7dadc98f5bb12..58adbd0356d6ef93c301ff2780bb79564d150fa8 100644
(file)
--- a/
fs/btrfs/ioctl.c
+++ b/
fs/btrfs/ioctl.c
@@
-1306,6
+1306,13
@@
static noinline int btrfs_ioctl_resize(struct btrfs_root *root,
ret = -EINVAL;
goto out_free;
}
+ if (device->fs_devices && device->fs_devices->seeding) {
+ printk(KERN_INFO "btrfs: resizer unable to apply on "
+ "seeding device %llu\n", devid);
+ ret = -EINVAL;
+ goto out_free;
+ }
+
if (!strcmp(sizestr, "max"))
new_size = device->bdev->bd_inode->i_size;
else {