lvm-merge.c

#include <blockdev/blockdev.h>
#include <blockdev/lvm.h>
#include <glib.h>
#include <stdio.h>
#include <unistd.h>

#define VGNAME "mergetest"
#define SNAPNAME "lvol0_snap"

void _log (gint level, const gchar *msg) {
        g_print ("bd log: %s\n", msg);
}


int main(void) {

        gboolean ret = FALSE;
        GError *error = NULL;

        BDExtraArg  lv_arg = {"--background",""};
        const BDExtraArg  *extra_args[2] = {&lv_arg, NULL};

        BDPluginSpec lvm_plugin = {BD_PLUGIN_LVM, "libbd_lvm.so.2"};
        BDPluginSpec *plugins[] = {&lvm_plugin, NULL};

        ret = bd_switch_init_checks (FALSE, &error);
        if (!ret) {
                g_print ("Error disabling dependencies checks during init: %s (%s, %d)\n",
                error->message, g_quark_to_string (error->domain), error->code);
                return 1;
        }

        ret = bd_ensure_init (plugins, (BDUtilsLogFunc) _log, &error);
        if (!ret) {
                g_print ("Error initializing libblockdev library: %s (%s, %d)\n",
                         error->message, g_quark_to_string (error->domain), error->code);
                return 1;
        }

        ret = bd_lvm_set_global_config ("log {level=7 file=/tmp/lvm.log syslog=0}", &error);
        if (!ret) {
                g_print ("Error setting LVM global config: %s (%s, %d)\n",
                         error->message, g_quark_to_string (error->domain), error->code);
                return 1;
        }


        ret = bd_lvm_lvsnapshotmerge (VGNAME, SNAPNAME, extra_args, &error);
        if (!ret) {
                g_print ("Error running snapshot merge: %s (%s, %d)\n",
                         error->message, g_quark_to_string (error->domain), error->code);
                return 1;
        }

        return 0;
}