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don't copy data to volume if volume alreay has data

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Signed-off-by: Gao feng <omarapazanadi@gmail.com>
This commit is contained in:
Gao feng
2016-04-02 18:43:16 +08:00
parent abd52a4ae2
commit 2ace93e881
1 changed files with 27 additions and 3 deletions
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src/container.c
+27 -3
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@@ -21,9 +21,30 @@
static int container_populate_volume(char *src, char *dest)
{
struct stat st;
fprintf(stdout, "populate volumes from %s to %s\n", src, dest);
/* FIXME: check if has data in volume, (except lost+found) */
if (stat(dest, &st) == 0) {
if (!S_ISDIR(st.st_mode)) {
fprintf(stderr, "the _data in volume %s is not directroy\n", dest);
return -1;
}
return 0;
}
if (errno != ENOENT) {
perror("access to volume failed\n");
return -1;
}
if (hyper_mkdir(dest) < 0) {
fprintf(stderr, "fail to create directroy %s\n", dest);
return -1;
}
return hyper_copy_dir(src, dest);
}
@@ -34,6 +55,7 @@ static int container_setup_volume(struct hyper_container *container)
struct volume *vol;
for (i = 0; i < container->vols_num; i++) {
char volume[512];
vol = &container->vols[i];
if (vol->scsiaddr)
@@ -41,6 +63,8 @@ static int container_setup_volume(struct hyper_container *container)
sprintf(dev, "/dev/%s", vol->device);
sprintf(path, "/tmp/%s", vol->mountpoint);
sprintf(volume, "/%s/_data", path);
fprintf(stdout, "mount %s to %s, tmp path %s\n",
dev, vol->mountpoint, path);
@@ -55,18 +79,18 @@ static int container_setup_volume(struct hyper_container *container)
}
if (vol->docker && container->initialize &&
(container_populate_volume(vol->mountpoint, path) < 0)) {
(container_populate_volume(vol->mountpoint, volume) < 0)) {
fprintf(stderr, "fail to populate volume %s\n", vol->mountpoint);
return -1;
}
if (mount(path, vol->mountpoint, NULL, MS_BIND, NULL) < 0) {
if (mount(volume, vol->mountpoint, NULL, MS_BIND, NULL) < 0) {
perror("mount volume device faled");
return -1;
}
if (vol->readonly &&
mount(path, vol->mountpoint, NULL, MS_BIND | MS_REMOUNT | MS_RDONLY, NULL) < 0) {
mount(volume, vol->mountpoint, NULL, MS_BIND | MS_REMOUNT | MS_RDONLY, NULL) < 0) {
perror("mount fsmap faled");
return -1;
}