static int
virStorageBackendZFSCreateVol(virConnectPtr conn ATTRIBUTE_UNUSED,
virStoragePoolObjPtr pool,
virStorageVolDefPtr vol)
{
virCommandPtr cmd = NULL;
int ret = -1;
vol->type = VIR_STORAGE_VOL_BLOCK;
if (vol->target.path != NULL) {
/* A target path passed to CreateVol has no meaning */
VIR_FREE(vol->target.path);
}
if (virAsprintf(&vol->target.path, "%s/%s",
pool->def->target.path, vol->name) == -1)
return -1;
if (VIR_STRDUP(vol->key, vol->target.path) < 0)
goto cleanup;
/**
* $ zfs create -o volmode=dev -V 10240K test/volname
*
* -o volmode=dev -- we want to get volumes exposed as cdev
* devices. If we don't specify that zfs
* will lookup vfs.zfs.vol.mode sysctl value
* -V -- tells to create a volume with the specified size
*/
cmd = virCommandNewArgList(ZFS, "create", "-o", "volmode=dev",
"-V", NULL);
virCommandAddArgFormat(cmd, "%lluK",
VIR_DIV_UP(vol->target.capacity, 1024));
virCommandAddArgFormat(cmd, "%s/%s",
pool->def->source.name, vol->name);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
if (virStorageBackendZFSFindVols(pool, vol) < 0)
goto cleanup;
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}
static int
virStorageBackendZFSCreateVol(virConnectPtr conn ATTRIBUTE_UNUSED,
virStoragePoolObjPtr pool,
virStorageVolDefPtr vol)
{
virCommandPtr cmd = NULL;
int ret = -1;
int volmode_needed = -1;
if (vol->target.format != VIR_STORAGE_FILE_RAW) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("only RAW volumes are supported by this storage pool"));
return -1;
}
if (vol->target.encryption != NULL) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
"%s", _("storage pool does not support encrypted "
"volumes"));
return -1;
}
vol->type = VIR_STORAGE_VOL_BLOCK;
VIR_FREE(vol->target.path);
if (virAsprintf(&vol->target.path, "%s/%s",
pool->def->target.path, vol->name) == -1)
return -1;
if (VIR_STRDUP(vol->key, vol->target.path) < 0)
goto cleanup;
volmode_needed = virStorageBackendZFSVolModeNeeded();
if (volmode_needed < 0)
goto cleanup;
/**
* $ zfs create -o volmode=dev -V 10240K test/volname
*
* -o volmode=dev -- we want to get volumes exposed as cdev
* devices. If we don't specify that zfs
* will lookup vfs.zfs.vol.mode sysctl value
* -V -- tells to create a volume with the specified size
*/
cmd = virCommandNewArgList(ZFS, "create", NULL);
if (volmode_needed)
virCommandAddArgList(cmd, "-o", "volmode=dev", NULL);
virCommandAddArg(cmd, "-V");
virCommandAddArgFormat(cmd, "%lluK",
VIR_DIV_UP(vol->target.capacity, 1024));
virCommandAddArgFormat(cmd, "%s/%s",
pool->def->source.name, vol->name);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
if (virStorageBackendZFSFindVols(pool, vol) < 0)
goto cleanup;
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}
static int
virStorageBackendZFSRefreshPool(virConnectPtr conn ATTRIBUTE_UNUSED,
virStoragePoolObjPtr pool ATTRIBUTE_UNUSED)
{
virCommandPtr cmd = NULL;
char *zpool_props = NULL;
char **lines = NULL;
char **tokens = NULL;
size_t i;
/**
* $ zpool get -Hp health,size,free,allocated test
* test health ONLINE -
* test size 199715979264 -
* test free 198899976704 -
* test allocated 816002560 -
* $
*
* Here we just provide a list of properties we want to see
*/
cmd = virCommandNewArgList(ZPOOL,
"get", "-Hp",
"health,size,free,allocated",
pool->def->source.name,
NULL);
virCommandSetOutputBuffer(cmd, &zpool_props);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
if (!(lines = virStringSplit(zpool_props, "\n", 0)))
goto cleanup;
for (i = 0; lines[i]; i++) {
size_t count;
char *prop_name;
if (STREQ(lines[i], ""))
continue;
virStringFreeList(tokens);
if (!(tokens = virStringSplitCount(lines[i], "\t", 0, &count)))
goto cleanup;
if (count != 4)
continue;
prop_name = tokens[1];
if (STREQ(prop_name, "free") || STREQ(prop_name, "size") ||
STREQ(prop_name, "allocated")) {
unsigned long long value;
if (virStrToLong_ull(tokens[2], NULL, 10, &value) < 0)
goto cleanup;
if (STREQ(prop_name, "free"))
pool->def->available = value;
else if (STREQ(prop_name, "size"))
pool->def->capacity = value;
else if (STREQ(prop_name, "allocated"))
pool->def->allocation = value;
}
}
/* Obtain a list of volumes */
if (virStorageBackendZFSFindVols(pool, NULL) < 0)
goto cleanup;
cleanup:
virCommandFree(cmd);
virStringFreeList(lines);
virStringFreeList(tokens);
VIR_FREE(zpool_props);
return 0;
}
