machined: if /var/lib/machines is backed by a loop file, resize it on "machinectl set-limit"

When the pool size limit is altered with "machinectl set-limit", then
not only set the subvolume quota of the /var/lib/machine subvolume, but
also resize the backing loop file and the btrfs file system on it
dynamically.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/shared/btrfs-util.h b/src/shared/btrfs-util.h
index 9a1eb3f383..e654a3fea1 100644
--- a/src/shared/btrfs-util.h
+++ b/src/shared/btrfs-util.h
@@ -60,6 +60,7 @@ int btrfs_subvol_get_quota_fd(int fd, BtrfsQuotaInfo *quota);
 int btrfs_reflink(int infd, int outfd);
 int btrfs_clone_range(int infd, uint64_t in_offset, int ofd, uint64_t out_offset, uint64_t sz);
 
+int btrfs_get_block_device_fd(int fd, dev_t *dev);
 int btrfs_get_block_device(const char *path, dev_t *dev);
 
 int btrfs_defrag_fd(int fd);
@@ -70,3 +71,6 @@ int btrfs_quota_enable(const char *path, bool b);
 
 int btrfs_quota_limit_fd(int fd, uint64_t referred_max);
 int btrfs_quota_limit(const char *path, uint64_t referred_max);
+
+int btrfs_resize_loopback_fd(int fd, uint64_t size);
+int btrfs_resize_loopback(const char *path, uint64_t size);