On Thursday, May 17, 2012 3:39 PM Lukasz Dorau <lukasz.dorau@xxxxxxxxx> wrote:
>
> We do not check if requested size of expansion is larger than maximum
> available size now. If it is larger the output message is a bit misleading,
> for example:
> mdadm: Cannot set size on array members.
> mdadm: Cannot set device size for /dev/md/vol: Device or resource busy
> Now we check if requested size of expansion is larger than maximum
> available size and the appropriate output message was added.
>
This patch has a small mistake.
I will send the corrected version in a while.
Lukasz
> ---
> super-intel.c | 47 ++++++++++++++++++++++++++++++++---------------
> 1 files changed, 32 insertions(+), 15 deletions(-)
>
> diff --git a/super-intel.c b/super-intel.c
> index 733bb38..52804ef 100644
> --- a/super-intel.c
> +++ b/super-intel.c
> @@ -9902,6 +9902,9 @@ enum imsm_reshape_type
> imsm_analyze_change(struct supertype *st,
> struct imsm_dev *dev;
> struct intel_super *super;
> long long current_size;
> + unsigned long long free_size;
> + long long max_size;
> + int rv;
>
> getinfo_super_imsm_volume(st, &info, NULL);
> if ((geo->level != info.array.level) &&
> @@ -10015,28 +10018,33 @@ enum imsm_reshape_type
> imsm_analyze_change(struct supertype *st,
> super->current_vol, st->devnum);
> goto analyse_change_exit;
> }
> + /* check the maximum available size
> + */
> + rv = imsm_get_free_size(st, dev->vol.map->num_members,
> + 0, chunk, &free_size);
> + if (rv == 0)
> + /* Cannot find maximum available space
> + */
> + max_size = 0;
> + else {
> + max_size = free_size + current_size;
> + /* align component size
> + */
> + max_size = imsm_component_size_aligment_check(
> + get_imsm_raid_level(dev->vol.map),
> + chunk * 1024,
> + max_size);
> + }
> if (geo->size == 0) {
> /* requested size change to the maximum available
> size
> */
> - unsigned long long freesize;
> - int rv;
> -
> - rv = imsm_get_free_size(st, dev->vol.map-
> >num_members,
> - 0, chunk, &freesize);
> - if (rv == 0) {
> + if (max_size == 0) {
> fprintf(stderr, Name " Error. Cannot find "
> "maximum available space.\n");
> change = -1;
> goto analyse_change_exit;
> - }
> - geo->size = freesize + current_size;
> -
> - /* align component size
> - */
> - geo->size = imsm_component_size_aligment_check(
> - get_imsm_raid_level(dev-
> >vol.map),
> - chunk * 1024,
> - geo->size);
> + } else
> + geo->size = max_size;
> }
>
> if ((direction == ROLLBACK_METADATA_CHANGES)) {
> @@ -10057,6 +10065,15 @@ enum imsm_reshape_type
> imsm_analyze_change(struct supertype *st,
> current_size, geo->size);
> goto analyse_change_exit;
> }
> + if (geo->size > max_size) {
> + fprintf(stderr,
> + Name " Error. Requested size is larger
> "
> + "than maximum available size
> (maximum "
> + "available size is %llu, "
> + "requested size /rounded/ is
> %llu).\n",
> + max_size, geo->size);
> + goto analyse_change_exit;
> + }
> }
> geo->size *= data_disks;
> geo->raid_disks = dev->vol.map->num_members;
>
> --
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