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Fix btrfs_open_devices to deal with changes since the scan ioctls

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Devices can change after the scan ioctls are done, and btrfs_open_devices
needs to be able to verify them as they are opened and used by the FS.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2008-05-13 16:03:06 -04:00
parent dfe2502068
commit a0af469b58
3 changed files with 63 additions and 15 deletions
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4
fs/btrfs/disk-io.c
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@@ -1266,10 +1266,10 @@ struct btrfs_root *open_ctree(struct super_block *sb,
btrfs_parse_options(options, tree_root, NULL);
if (btrfs_super_num_devices(disk_super) > fs_devices->num_devices) {
if (btrfs_super_num_devices(disk_super) > fs_devices->open_devices) {
printk("Btrfs: wanted %llu devices, but found %llu\n",
(unsigned long long)btrfs_super_num_devices(disk_super),
(unsigned long long)fs_devices->num_devices);
(unsigned long long)fs_devices->open_devices);
if (btrfs_test_opt(tree_root, DEGRADED))
printk("continuing in degraded mode\n");
else {