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Remove 'up' from rounding message that sometimes rounds down.

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Detect reduction of 0 after rounding for stripes and avoid warning of potential data loss.
This commit is contained in:
Alasdair Kergon 2012-04-12 15:11:21 +00:00
parent b4eaf64b10
commit b8e51eae00
1 changed files with 16 additions and 1 deletions
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17
tools/lvresize.c
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@ -454,6 +454,12 @@ static int _lvresize(struct cmd_context *cmd, struct volume_group *vg,
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 @@ static int _lvresize(struct cmd_context *cmd, struct volume_group *vg,
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 @@ static int _lvresize(struct cmd_context *cmd, struct volume_group *vg,
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)) {