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#include "lvmetad-client.h"
#include "label.h"
#include "lvmcache.h"
#include "metadata.h"
const char *uuid1 = "abcd-efgh";
const char *uuid2 = "bbcd-efgh";
const char *vgid = "yada-yada";
const char *uuid3 = "cbcd-efgh";
const char *metadata2 = "{\n"
"id = \"yada-yada\"\n"
"seqno = 15\n"
"status = [\"READ\", \"WRITE\"]\n"
"flags = []\n"
"extent_size = 8192\n"
"physical_volumes {\n"
" pv0 {\n"
" id = \"abcd-efgh\"\n"
" }\n"
" pv1 {\n"
" id = \"bbcd-efgh\"\n"
" }\n"
" pv2 {\n"
" id = \"cbcd-efgh\"\n"
" }\n"
"}\n"
"}\n";
void _handle_reply(daemon_reply reply) {
const char *repl = daemon_reply_str(reply, "response", NULL);
const char *status = daemon_reply_str(reply, "status", NULL);
const char *vgid = daemon_reply_str(reply, "vgid", NULL);
fprintf(stderr, "[C] REPLY: %s\n", repl);
if (!strcmp(repl, "failed"))
fprintf(stderr, "[C] REASON: %s\n", daemon_reply_str(reply, "reason", "unknown"));
if (vgid)
fprintf(stderr, "[C] VGID: %s\n", vgid);
if (status)
fprintf(stderr, "[C] STATUS: %s\n", status);
daemon_reply_destroy(reply);
}
void _pv_add(daemon_handle h, const char *uuid, const char *metadata)
{
daemon_reply reply = daemon_send_simple(h, "pv_add", "uuid = %s", uuid,
"metadata = %b", metadata,
NULL);
_handle_reply(reply);
}
int scan(daemon_handle h, char *fn) {
struct device *dev = dev_cache_get(fn, NULL);
struct label *label;
if (!label_read(dev, &label, 0)) {
fprintf(stderr, "[C] no label found on %s\n", fn);
return;
}
char uuid[64];
id_write_format(dev->pvid, uuid, 64);
fprintf(stderr, "[C] found PV: %s\n", uuid);
struct lvmcache_info *info = (struct lvmcache_info *) label->info;
struct physical_volume pv = { 0, };
if (!(info->fmt->ops->pv_read(info->fmt, dev_name(dev), &pv, 0))) {
fprintf(stderr, "[C] Failed to read PV %s", dev_name(dev));
return;
}
struct format_instance_ctx fic;
struct format_instance *fid = info->fmt->ops->create_instance(info->fmt, &fic);
struct metadata_area *mda;
struct volume_group *vg = NULL;
dm_list_iterate_items(mda, &info->mdas) {
struct volume_group *this = mda->ops->vg_read(fid, "", mda);
if (this && !vg || this->seqno > vg->seqno)
vg = this;
}
if (vg) {
char *buf = NULL;
/* TODO. This is not entirely correct, since export_vg_to_buffer
* adds trailing garbage to the buffer. We may need to use
* export_vg_to_config_tree and format the buffer ourselves. It
* does, however, work for now, since the garbage is well
* formatted and has no conflicting keys with the rest of the
* request. */
export_vg_to_buffer(vg, &buf);
daemon_reply reply =
daemon_send_simple(h, "pv_add", "uuid = %s", uuid,
"metadata = %b", strchr(buf, '{'),
NULL);
_handle_reply(reply);
}
}
void _dump_vg(daemon_handle h, const char *uuid)
{
daemon_reply reply = daemon_send_simple(h, "vg_by_uuid", "uuid = %s", uuid, NULL);
fprintf(stderr, "[C] reply buffer: %s\n", reply.buffer);
daemon_reply_destroy(reply);
}
int main(int argc, char **argv) {
daemon_handle h = lvmetad_open();
if (argc > 1) {
int i;
struct cmd_context *cmd = create_toolcontext(0, NULL, 0, 0);
for (i = 1; i < argc; ++i) {
const char *uuid = NULL;
scan(h, argv[i]);
}
destroy_toolcontext(cmd);
return 0;
}
_pv_add(h, uuid1, NULL);
_pv_add(h, uuid2, metadata2);
_dump_vg(h, vgid);
_pv_add(h, uuid3, NULL);
daemon_close(h);
return 0;
}
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