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handle volume special fstype

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We can use INIT_VOLUME_MOUNTPOINT_FSTYPE to tell hyperstart that
current volume is a fake volume that only needs mountpoint to be present.

Signed-off-by: Peng Tao <bergwolf@gmail.com>
This commit is contained in:
Peng Tao
2016-09-02 14:26:15 +08:00
parent d8fb6c1af3
commit bb7ebdaadd
1 changed files with 19 additions and 4 deletions
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src/container.c
+19 -4
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@@ -20,6 +20,9 @@
#include "parse.h"
#include "syscall.h"
const char *INIT_VOLUME_FILENAME = ".hyper_file_volume_data_do_not_create_on_your_own";
const char *INIT_VOLUME_MOUNTPOINT_FSTYPE= "hyper_volume_mountpoint_init_fstype";
static int container_populate_volume(char *src, char *dest)
{
struct stat st;
@@ -49,8 +52,6 @@ static int container_populate_volume(char *src, char *dest)
return hyper_copy_dir(src, dest);
}
const char *INIT_VOLUME_FILENAME = ".hyper_file_volume_data_do_not_create_on_your_own";
static int container_check_file_volume(char *hyper_path, const char **filename)
{
struct dirent **list;
@@ -106,12 +107,26 @@ static int container_setup_volume(struct hyper_container *container)
const char *filevolume = NULL;
vol = &container->vols[i];
if (vol->scsiaddr)
sprintf(mountpoint, "./%s", vol->mountpoint);
if (!strcmp(vol->fstype, INIT_VOLUME_MOUNTPOINT_FSTYPE)) {
fprintf(stdout, "create special mountpoint %s, skip mounting fake device\n", mountpoint);
if (hyper_mkdir(mountpoint, 0777) < 0) {
perror("create fake device mountpoint failed");
return -1;
}
if (mount(mountpoint, mountpoint, NULL, MS_BIND, NULL) < 0) {
perror("mount fake device failed");
return -1;
}
continue;
}
if (vol->scsiaddr) {
hyper_find_sd(vol->scsiaddr, &vol->device);
}
sprintf(dev, "/dev/%s", vol->device);
sprintf(path, "/tmp/%s", vol->mountpoint);
sprintf(mountpoint, "./%s", vol->mountpoint);
fprintf(stdout, "mount %s to %s, tmp path %s\n",
dev, vol->mountpoint, path);