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conf: add activation/auto_set_activation_skip

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The activation/auto_set_activation_skip enables/disables automatic
adding of the ACTIVATION_SKIP LV flag. By default thin snapshots
are flagged to be skipped during activation.

And by default, the auto_set_activation_skip is enabled.
This commit is contained in:
Peter Rajnoha 2013-07-12 09:27:17 +02:00
parent 283c93a858
commit 8d1e511363
6 changed files with 18 additions and 5 deletions
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7
conf/example.conf.in
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@ -697,6 +697,13 @@ activation {
#
# read_only_volume_list = [ "vg1", "vg2/lvol1", "@tag1", "@*" ]
# Each LV can have an 'activation skip' flag stored persistently against it.
# During activation, this flag is used to decide whether such an LV is skipped.
# The 'activation skip' flag can be set during LV creation and by default it
# is automatically set for thin snapshot LVs. The 'auto_set_activation_skip'
# enables or disables this automatic setting of the flag while LVs are created.
# auto_set_activation_skip = 1
# For RAID or 'mirror' segment types, 'raid_region_size' is the
# size (in kiB) of each:
# - synchronization operation when initializing

2
lib/commands/toolcontext.c
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@ -342,6 +342,8 @@ static int _process_config(struct cmd_context *cmd)
cmd->default_settings.activation = find_config_tree_bool(cmd, global_activation_CFG, NULL);
set_activation(cmd->default_settings.activation);
cmd->auto_set_activation_skip = find_config_tree_bool(cmd, activation_auto_set_activation_skip_CFG, NULL);
cmd->default_settings.suffix = find_config_tree_bool(cmd, global_suffix_CFG, NULL);
if (!(cmd->default_settings.unit_factor =

1
lib/commands/toolcontext.h
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@ -87,6 +87,7 @@ struct cmd_context {
unsigned handles_unknown_segments:1;
unsigned use_linear_target:1;
unsigned partial_activation:1;
unsigned auto_set_activation_skip:1;
unsigned si_unit_consistency:1;
unsigned metadata_read_only:1;
unsigned threaded:1; /* Set if running within a thread e.g. clvmd */

1
lib/config/config_settings.h
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@ -185,6 +185,7 @@ cfg_array(activation_mlock_filter_CFG, "mlock_filter", activation_CFG_SECTION, 0
cfg(activation_use_mlockall_CFG, "use_mlockall", activation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_USE_MLOCKALL, vsn(2, 2, 62), NULL)
cfg(activation_monitoring_CFG, "monitoring", activation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_DMEVENTD_MONITOR, vsn(2, 2, 63), NULL)
cfg(activation_polling_interval_CFG, "polling_interval", activation_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_INTERVAL, vsn(2, 2, 63), NULL)
cfg(activation_auto_set_activation_skip_CFG, "auto_set_activation_skip", activation_CFG_SECTION, CFG_PROFILABLE, CFG_TYPE_BOOL, DEFAULT_AUTO_SET_ACTIVATION_SKIP, vsn(2,2,99), NULL)
cfg(metadata_pvmetadatacopies_CFG, "pvmetadatacopies", metadata_CFG_SECTION, CFG_ADVANCED, CFG_TYPE_INT, DEFAULT_PVMETADATACOPIES, vsn(1, 0, 0), NULL)
cfg(metadata_vgmetadatacopies_CFG, "vgmetadatacopies", metadata_CFG_SECTION, CFG_ADVANCED, CFG_TYPE_INT, DEFAULT_VGMETADATACOPIES, vsn(2, 2, 69), NULL)

1
lib/config/defaults.h
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@ -140,6 +140,7 @@
# define DEFAULT_ACTIVATION 0
#endif
#define DEFAULT_AUTO_SET_ACTIVATION_SKIP 1
#define DEFAULT_USE_LINEAR_TARGET 1
#define DEFAULT_STRIPE_FILLER "error"
#define DEFAULT_RAID_REGION_SIZE 512 /* KB */

11
lib/metadata/lv_manip.c
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@ -5286,16 +5286,17 @@ static struct logical_volume *_create_virtual_origin(struct cmd_context *cmd,
void lv_set_activation_skip(struct logical_volume *lv, int override_default,
int add_skip)
{
int skip;
int skip = 0;
/* override default behaviour */
if (override_default)
skip = add_skip;
/* default behaviour */
else if (lv_is_thin_volume(lv) && first_seg(lv)->origin)
skip = 1; /* skip activation for thin snapshots by default */
else
skip = 0;
else if (lv->vg->cmd->auto_set_activation_skip) {
/* skip activation for thin snapshots by default */
if (lv_is_thin_volume(lv) && first_seg(lv)->origin)
skip = 1;
}
if (skip)
lv->status |= LV_ACTIVATION_SKIP;