193 lines
6.1 KiB
Diff
193 lines
6.1 KiB
Diff
From 696036c20f8b452f0eb8482a9aa13878ce398452 Mon Sep 17 00:00:00 2001
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From: Zdenek Kabelac <zkabelac@redhat.com>
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Date: Sun, 15 Jan 2023 21:24:28 +0100
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Subject: [PATCH 093/115] vdo: read live vdo size configuration
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Introduce struct vdo_pool_size_config usable to calculate necessary
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memory size for active VDO volume.
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Function lv_vdo_pool_size_config() is able to read out this
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configuration out of runtime DM table line.
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(cherry picked from commit 1bed2cafe83096cf01cfff5cd2cd64ecb32b7d78)
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---
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lib/activate/activate.c | 31 +++++++++++++++
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lib/activate/activate.h | 2 +
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lib/activate/dev_manager.c | 65 ++++++++++++++++++++++++++++++++
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lib/activate/dev_manager.h | 3 ++
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lib/metadata/metadata-exported.h | 6 +++
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5 files changed, 107 insertions(+)
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diff --git a/lib/activate/activate.c b/lib/activate/activate.c
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index 76740bb2b..c951523c5 100644
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--- a/lib/activate/activate.c
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+++ b/lib/activate/activate.c
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@@ -322,6 +322,11 @@ int lv_vdo_pool_percent(const struct logical_volume *lv, dm_percent_t *percent)
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{
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return 0;
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}
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+int lv_vdo_pool_size_config(const struct logical_volume *lv,
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+ struct vdo_pool_size_config *cfg)
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+{
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+ return 0;
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+}
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int lvs_in_vg_activated(const struct volume_group *vg)
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{
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return 0;
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@@ -1346,6 +1351,32 @@ int lv_vdo_pool_percent(const struct logical_volume *lv, dm_percent_t *percent)
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return 1;
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}
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+/*
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+ * lv_vdo_pool_size_config obtains size configuration from active VDO table line
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+ *
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+ * If the 'params' string has been already retrieved, use it.
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+ * If the mempool already exists, use it.
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+ *
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+ */
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+int lv_vdo_pool_size_config(const struct logical_volume *lv,
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+ struct vdo_pool_size_config *cfg)
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+{
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+ struct dev_manager *dm;
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+ int r;
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+
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+ if (!lv_info(lv->vg->cmd, lv, 1, NULL, 0, 0))
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+ return 1; /* Inactive VDO pool -> no runtime config */
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+
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+ if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, !lv_is_pvmove(lv))))
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+ return_0;
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+
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+ r = dev_manager_vdo_pool_size_config(dm, lv, cfg);
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+
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+ dev_manager_destroy(dm);
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+
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+ return r;
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+}
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+
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static int _lv_active(struct cmd_context *cmd, const struct logical_volume *lv)
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{
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struct lvinfo info;
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diff --git a/lib/activate/activate.h b/lib/activate/activate.h
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index edd385aef..ca2b7f559 100644
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--- a/lib/activate/activate.h
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+++ b/lib/activate/activate.h
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@@ -200,6 +200,8 @@ int lv_thin_pool_status(const struct logical_volume *lv, int flush,
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int lv_vdo_pool_status(const struct logical_volume *lv, int flush,
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struct lv_status_vdo **status);
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int lv_vdo_pool_percent(const struct logical_volume *lv, dm_percent_t *percent);
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+int lv_vdo_pool_size_config(const struct logical_volume *lv,
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+ struct vdo_pool_size_config *cfg);
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/*
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* Return number of LVs in the VG that are active.
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diff --git a/lib/activate/dev_manager.c b/lib/activate/dev_manager.c
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index 5b72bf772..4924d8c56 100644
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--- a/lib/activate/dev_manager.c
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+++ b/lib/activate/dev_manager.c
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@@ -1901,6 +1901,71 @@ out:
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return r;
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}
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+int dev_manager_vdo_pool_size_config(struct dev_manager *dm,
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+ const struct logical_volume *lv,
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+ struct vdo_pool_size_config *cfg)
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+{
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+ const char *dlid;
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+ struct dm_info info;
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+ uint64_t start, length;
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+ struct dm_task *dmt = NULL;
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+ char *type = NULL;
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+ char *params = NULL;
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+ int r = 0;
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+ unsigned version = 0;
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+
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+ memset(cfg, 0, sizeof(*cfg));
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+
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+ if (!(dlid = build_dm_uuid(dm->mem, lv, lv_layer(lv))))
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+ return_0;
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+
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+ if (!(dmt = _setup_task_run(DM_DEVICE_TABLE, &info, NULL, dlid, 0, 0, 0, 0, 0, 0)))
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+ return_0;
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+
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+ if (!info.exists)
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+ goto inactive; /* VDO device is not active, should not happen here... */
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+
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+ log_debug_activation("Checking VDO pool table line for LV %s.",
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+ display_lvname(lv));
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+
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+ if (dm_get_next_target(dmt, NULL, &start, &length, &type, ¶ms)) {
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+ log_error("More then one table line found for %s.",
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+ display_lvname(lv));
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+ goto out;
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+ }
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+
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+ if (!type || strcmp(type, TARGET_NAME_VDO)) {
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+ log_error("Expected %s segment type but got %s instead.",
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+ TARGET_NAME_VDO, type ? type : "NULL");
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+ goto out;
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+ }
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+
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+ if (sscanf(params, "V%u %*s " FMTu64 " %*u " FMTu32,
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+ &version, &cfg->physical_size, &cfg->block_map_cache_size_mb) != 3) {
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+ log_error("Failed to parse VDO parameters %s for LV %s.",
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+ params, display_lvname(lv));
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+ goto out;
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+ }
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+
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+ switch (version) {
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+ case 2: break;
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+ case 4: break;
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+ default: log_warn("WARNING: Unknown VDO table line version %u.", version);
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+ }
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+
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+ cfg->virtual_size = length;
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+ cfg->physical_size *= 8; // From 4K unit to 512B
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+ cfg->block_map_cache_size_mb /= 256; // From 4K unit to MiB
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+ cfg->index_memory_size_mb = first_seg(lv)->vdo_params.index_memory_size_mb; // Preserved
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+
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+inactive:
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+ r = 1;
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+out:
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+ dm_task_destroy(dmt);
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+
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+ return r;
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+}
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+
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/*************************/
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/* NEW CODE STARTS HERE */
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diff --git a/lib/activate/dev_manager.h b/lib/activate/dev_manager.h
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index 27092f2b9..2f7ce6099 100644
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--- a/lib/activate/dev_manager.h
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+++ b/lib/activate/dev_manager.h
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@@ -81,6 +81,9 @@ int dev_manager_thin_pool_status(struct dev_manager *dm,
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int dev_manager_vdo_pool_status(struct dev_manager *dm,
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const struct logical_volume *lv, int flush,
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struct lv_status_vdo **status, int *exists);
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+int dev_manager_vdo_pool_size_config(struct dev_manager *dm,
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+ const struct logical_volume *lv,
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+ struct vdo_pool_size_config *cfg);
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int dev_manager_suspend(struct dev_manager *dm, const struct logical_volume *lv,
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struct lv_activate_opts *laopts, int lockfs, int flush_required);
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int dev_manager_activate(struct dev_manager *dm, const struct logical_volume *lv,
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diff --git a/lib/metadata/metadata-exported.h b/lib/metadata/metadata-exported.h
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index f735baa55..de21f48f2 100644
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--- a/lib/metadata/metadata-exported.h
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+++ b/lib/metadata/metadata-exported.h
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@@ -1379,6 +1379,12 @@ int fill_vdo_target_params(struct cmd_context *cmd,
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struct dm_vdo_target_params *vtp,
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uint64_t *vdo_pool_header_size,
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struct profile *profile);
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+struct vdo_pool_size_config {
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+ uint64_t physical_size;
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+ uint64_t virtual_size;
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+ uint32_t block_map_cache_size_mb;
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+ uint32_t index_memory_size_mb;
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+};
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int check_vdo_constrains(struct cmd_context *cmd, uint64_t physical_size,
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uint64_t virtual_size, struct dm_vdo_target_params *vtp);
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/* -- metadata/vdo_manip.c */
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--
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2.41.0
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