[lvm-devel] LVM2/tools lvresize.c
agk at sourceware.org
agk at sourceware.org
Thu Apr 12 15:11:21 UTC 2012
CVSROOT: /cvs/lvm2
Module name: LVM2
Changes by: agk at sourceware.org 2012-04-12 15:11:21
Modified files:
tools : lvresize.c
Log message:
Remove 'up' from rounding message that sometimes rounds down.
Detect reduction of 0 after rounding for stripes and avoid warning of potential data loss.
Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/tools/lvresize.c.diff?cvsroot=lvm2&r1=1.154&r2=1.155
--- LVM2/tools/lvresize.c 2012/04/11 12:40:04 1.154
+++ LVM2/tools/lvresize.c 2012/04/12 15:11:21 1.155
@@ -454,6 +454,12 @@
alloc = (alloc_policy_t) arg_uint_value(cmd, alloc_ARG, lv->alloc);
+ /*
+ * First adjust to an exact multiple of extent size.
+ * When extending by a relative amount we round that amount up.
+ * When reducing by a relative amount we remove at most that amount.
+ * When changing to an absolute size, we round that size up.
+ */
if (lp->size) {
if (lp->size % vg->extent_size) {
if (lp->sign == SIGN_MINUS)
@@ -462,7 +468,7 @@
lp->size += vg->extent_size -
(lp->size % vg->extent_size);
- log_print("Rounding up size to full physical extent %s",
+ log_print("Rounding size to boundary between physical extents: %s",
display_size(cmd, lp->size));
}
@@ -714,6 +720,15 @@
return EINVALID_CMD_LINE;
}
lp->resize = LV_EXTEND;
+ } else if (lp->extents == lv->le_count) {
+ if (use_policy)
+ return ECMD_PROCESSED; /* Nothing to do. */
+ if (!lp->resizefs) {
+ log_error("New size (%d extents) matches existing size "
+ "(%d extents)", lp->extents, lv->le_count);
+ return EINVALID_CMD_LINE;
+ }
+ lp->resize = LV_EXTEND;
}
if (lv_is_origin(lv)) {
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