[lvm-devel] [PATCH 6/9] Convert vgsplit to use vg_read_for_update.
Petr Rockai
prockai at redhat.com
Sun May 3 11:38:58 UTC 2009
Sun May 3 13:12:28 CEST 2009 Petr Rockai <me at mornfall.net>
* Convert vgsplit to use vg_read_for_update.
diff -rN -u -p old-temp.31080/tools/vgsplit.c new-temp.31080/tools/vgsplit.c
--- old-temp.31080/tools/vgsplit.c 2009-05-03 13:29:35.650236640 +0200
+++ new-temp.31080/tools/vgsplit.c 2009-05-03 13:29:35.758243454 +0200
@@ -289,7 +289,6 @@ int vgsplit(struct cmd_context *cmd, int
struct volume_group *vg_to = NULL, *vg_from = NULL;
int opt;
int existing_vg;
- int consistent;
int r = ECMD_FAILED;
const char *lv_name;
@@ -321,21 +320,22 @@ int vgsplit(struct cmd_context *cmd, int
}
log_verbose("Checking for volume group \"%s\"", vg_name_from);
- if (!(vg_from = vg_lock_and_read(cmd, vg_name_from, NULL, LCK_VG_WRITE,
- CLUSTERED | EXPORTED_VG |
- RESIZEABLE_VG | LVM_WRITE,
- CORRECT_INCONSISTENT | FAIL_INCONSISTENT)))
- return ECMD_FAILED;
- log_verbose("Checking for new volume group \"%s\"", vg_name_to);
- if (!lock_vol(cmd, vg_name_to, LCK_VG_WRITE | LCK_NONBLOCK)) {
- log_error("Can't get lock for %s", vg_name_to);
- unlock_release_vg(cmd, vg_from, vg_name_from);
+ vg_from = vg_read_for_update(cmd, vg_name_from, NULL,
+ READ_REQUIRE_RESIZEABLE);
+ if (vg_read_error(vg_from))
return ECMD_FAILED;
- }
- consistent = 0;
- if ((vg_to = vg_read_internal(cmd, vg_name_to, NULL, &consistent))) {
+ log_verbose("Checking for new volume group \"%s\"", vg_name_to);
+ vg_to = vg_read_for_update(cmd, vg_name_to, NULL,
+ READ_REQUIRE_RESIZEABLE |
+ LOCK_NONBLOCKING | LOCK_KEEP |
+ READ_CHECK_EXISTENCE);
+
+ if (vg_read_error(vg_to))
+ goto_bad;
+
+ if (vg_might_exist(vg_to)) {
existing_vg = 1;
if (new_vg_option_specified(cmd)) {
log_error("Volume group \"%s\" exists, but new VG "
@@ -448,13 +448,12 @@ int vgsplit(struct cmd_context *cmd, int
/*
* Finally, remove the EXPORTED flag from the new VG and write it out.
*/
- consistent = 1;
if (!test_mode()) {
- vg_release(vg_to);
- if (!(vg_to = vg_read_internal(cmd, vg_name_to, NULL, &consistent)) ||
- !consistent) {
- log_error("Volume group \"%s\" became inconsistent: please "
- "fix manually", vg_name_to);
+ vg_to = vg_read_for_update(cmd, vg_name_to, NULL,
+ READ_ALLOW_EXPORTED);
+ if (vg_read_error(vg_to)) {
+ log_error("Volume group \"%s\" became inconsistent: "
+ "please fix manually", vg_name_to);
goto_bad;
}
}
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