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lvconvert: allow reshaping in the cluster and on open devices

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The previous commit fixed allocation/activation of reshape space.

Remove conditionals prohibiting reshaping in these cases.

Related: rhbz1447812
Related: rhbz1448116
Related: rhbz1461562
This commit is contained in:
Heinz Mauelshagen 2017-07-13 18:27:19 +02:00
parent f1b78665ef
commit 6685460f5a
1 changed files with 0 additions and 62 deletions
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62
lib/metadata/raid_manip.c
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@ -75,24 +75,6 @@ static int _rebuild_with_emptymeta_is_supported(struct cmd_context *cmd,
return 1;
}
/* https://bugzilla.redhat.com/1447812 check open count of @lv vs. @open_count */
static int _check_lv_open_count(struct logical_volume *lv, int open_count) {
struct lvinfo info = { 0 };
if (!lv_info(lv->vg->cmd, lv, 0, &info, 1, 0)) {
log_error("lv_info failed: aborting.");
return 0;
}
if (info.open_count != open_count) {
log_error("Reshape is only supported when %s is not in use (e.g. unmount filesystem).",
display_lvname(lv));
return 0;
}
return 1;
}
/*
* Ensure region size exceeds the minimum for @lv because
* MD's bitmap is limited to tracking 2^21 regions.
@ -2466,10 +2448,6 @@ static int _raid_reshape(struct logical_volume *lv,
seg->region_size = new_region_size;
/* https://bugzilla.redhat.com/1447812 also check open count */
if (!_check_lv_open_count(lv, 1))
return_0;
if (seg->area_count != 2 || old_image_count != seg->area_count) {
if (!_lv_update_reload_fns_reset_eliminate_lvs(lv, 0, &removal_lvs, NULL))
return_0;
@ -6310,27 +6288,6 @@ static int _conversion_options_allowed(const struct lv_segment *seg_from,
return r;
}
/* https://bugzilla.redhat.com/1447812 try opening LV exclusively */
static int _lv_open_excl(struct logical_volume *lv, struct device **dev) {
char *dev_path;
size_t sz = strlen(lv->vg->cmd->dev_dir) + strlen(lv->vg->name) + strlen(lv->name) + 2;
*dev = NULL;
if (!(dev_path = dm_pool_alloc(lv->vg->cmd->mem, sz)))
return_0;
if (dm_snprintf(dev_path, sz, "%s%s/%s", lv->vg->cmd->dev_dir, lv->vg->name, lv->name) < 0)
return_0;
if (!(*dev = dev_create_file(dev_path, NULL, NULL, 0)))
return_0;
if (!dev_open_flags(*dev, O_EXCL, 1, 1)) {
log_error("Reshape is only supported when %s is not in use (e.g. unmount filesystem).",
display_lvname(lv));
return 0;
}
return 1;
}
/*
* lv_raid_convert
*
@ -6380,7 +6337,6 @@ int lv_raid_convert(struct logical_volume *lv,
uint32_t region_size;
uint32_t data_copies = seg->data_copies;
uint32_t available_slvs, removed_slvs;
struct device *dev;
takeover_fn_t takeover_fn;
/* FIXME If not active, prompt and activate */
@ -6445,31 +6401,13 @@ int lv_raid_convert(struct logical_volume *lv,
case 0:
break;
case 1:
/* Conversion of reshapable raids is the cluster is not supported yet. */
if (locking_is_clustered()) {
log_error("Conversion of %s not supported in the cluster.", display_lvname(lv));
return 0;
}
/* https://bugzilla.redhat.com/1447812 reject reshape on open LV */
if (!_check_lv_open_count(lv, 0))
return_0;
if (!_lv_open_excl(lv, &dev))
return_0;
if (!_check_lv_open_count(lv, 1)) {
dev_close(dev);
return_0;
}
if (!_raid_reshape(lv, new_segtype, yes, force,
data_copies, region_size,
stripes, stripe_size, allocate_pvs)) {
dev_close(dev);
log_error("Reshape request failed on LV %s.", display_lvname(lv));
return 0;
}
dev_close(dev);
return 1;
case 2:
log_error("Invalid conversion request on %s.", display_lvname(lv));