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vdo: introduce function for estimation of virtual size

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This commit is contained in:
Zdenek Kabelac 2019-01-16 15:34:28 +01:00
parent 022ebb0cfe
commit ab031d673d
2 changed files with 19 additions and 1 deletions
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1
lib/metadata/metadata-exported.h
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@ -1299,6 +1299,7 @@ const char *get_vdo_compression_state_name(enum dm_vdo_compression_state state);
const char *get_vdo_index_state_name(enum dm_vdo_index_state state);
const char *get_vdo_operating_mode_name(enum dm_vdo_operating_mode mode);
uint64_t get_vdo_pool_virtual_size(const struct lv_segment *vdo_pool_seg);
int update_vdo_pool_virtual_size(struct lv_segment *vdo_pool_seg);
int parse_vdo_pool_status(struct dm_pool *mem, const struct logical_volume *vdo_pool_lv,
const char *params, struct lv_status_vdo *status);
struct logical_volume *convert_vdo_pool_lv(struct logical_volume *data_lv,

19
lib/metadata/vdo_manip.c
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@ -1,5 +1,5 @@
/*
* Copyright (C) 2018 Red Hat, Inc. All rights reserved.
* Copyright (C) 2018-2019 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
@ -91,6 +91,23 @@ uint64_t get_vdo_pool_virtual_size(const struct lv_segment *vdo_pool_seg)
vdo_pool_seg->vdo_pool_header_size);
}
int update_vdo_pool_virtual_size(struct lv_segment *vdo_pool_seg)
{
struct seg_list *sl;
uint32_t extents = 0;
/* FIXME: as long as we have only SINGLE VDO with vdo-pool this works */
/* after adding support for multiple VDO LVs - this needs heavy rework */
dm_list_iterate_items(sl, &vdo_pool_seg->lv->segs_using_this_lv)
extents += sl->seg->len;
/* Only growing virtual/logical VDO size */
if (extents > vdo_pool_seg->vdo_pool_virtual_extents)
vdo_pool_seg->vdo_pool_virtual_extents = extents;
return 1;
}
static int _sysfs_get_kvdo_value(const char *dm_name, const char *vdo_param, uint64_t *value)
{
char path[PATH_MAX];