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32e22a0037
Previously, a command would only rescan a lockd VG when lvmetad returned the "vg_invalid" flag indicating that the cached copy was invalid (which is done by lvmlockd.) This is still the only usual reason for rescanning a lockd VG, but two new special cases are added where we also do the rescan: . When the --shared option is used to display lockd VGs from hosts not using lvmlockd. This is the same case as using --foreign to display foreign VGs, but --shared was missing the corresponding bits to rescan the VGs. . When a lockd VG is allowed to be read for displaying after failing to acquire the lock from lvmlockd. In this case, the usual mechanism for validating the cache is missed, so assume the cache would have been invalidated. (This had been a previous todo item that was lost during other cleanup.) These were long-standing todos that were lost track of.
219 lines
6.4 KiB
C
219 lines
6.4 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _LVM_TOOLCONTEXT_H
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#define _LVM_TOOLCONTEXT_H
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#include "dev-cache.h"
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#include "dev-type.h"
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#include <limits.h>
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/*
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* Config options that can be changed while commands are processed
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*/
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struct config_info {
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int debug;
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int debug_classes;
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int verbose;
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int silent;
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int test;
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int syslog;
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int activation;
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int suffix;
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int archive; /* should we archive ? */
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int backup; /* should we backup ? */
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int read_ahead; /* DM_READ_AHEAD_NONE or _AUTO */
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int udev_rules;
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int udev_sync;
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int udev_fallback;
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int cache_vgmetadata;
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const char *msg_prefix;
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const char *fmt_name;
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uint64_t unit_factor;
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int cmd_name; /* Show command name? */
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mode_t umask;
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char unit_type;
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char _padding[1];
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};
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struct dm_config_tree;
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struct profile_params;
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struct archive_params;
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struct backup_params;
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struct arg_values;
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struct config_tree_list {
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struct dm_list list;
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struct dm_config_tree *cft;
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};
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struct cmd_context_initialized_parts {
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unsigned config:1; /* used to reinitialize config if previous init was not successful */
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unsigned filters:1;
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unsigned connections:1;
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};
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/* FIXME Split into tool & library contexts */
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/* command-instance-related variables needed by library */
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struct cmd_context {
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/*
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* Memory handlers.
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*/
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struct dm_pool *libmem; /* for permanent config data */
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struct dm_pool *mem; /* transient: cleared between each command */
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/*
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* Command line and arguments.
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*/
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const char *cmd_line;
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struct command *command;
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char **argv;
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struct arg_values *arg_values;
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struct dm_list arg_value_groups;
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/*
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* Format handlers.
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*/
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const struct format_type *fmt; /* current format to use by default */
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struct format_type *fmt_backup; /* format to use for backups */
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struct dm_list formats; /* available formats */
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struct dm_list segtypes; /* available segment types */
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/*
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* Machine and system identification.
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*/
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const char *system_id;
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const char *hostname;
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const char *kernel_vsn;
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/*
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* Device identification.
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*/
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struct dev_types *dev_types; /* recognized extra device types. */
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/*
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* Initialization state.
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*/
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struct cmd_context_initialized_parts initialized;
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/*
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* Switches.
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*/
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unsigned is_long_lived:1; /* optimises persistent_filter handling */
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unsigned handles_missing_pvs:1;
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unsigned handles_unknown_segments:1;
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unsigned use_linear_target:1;
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unsigned partial_activation:1;
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unsigned degraded_activation:1;
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unsigned auto_set_activation_skip:1;
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unsigned si_unit_consistency:1;
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unsigned report_binary_values_as_numeric:1;
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unsigned metadata_read_only:1;
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unsigned ignore_clustered_vgs:1;
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unsigned threaded:1; /* set if running within a thread e.g. clvmd */
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unsigned independent_metadata_areas:1; /* active formats have MDAs outside PVs */
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unsigned unknown_system_id:1;
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unsigned include_foreign_vgs:1; /* report/display cmds can reveal foreign VGs */
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unsigned include_shared_vgs:1; /* report/display cmds can reveal lockd VGs */
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unsigned include_active_foreign_vgs:1; /* cmd should process foreign VGs with active LVs */
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unsigned vg_read_print_access_error:1; /* print access errors from vg_read */
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unsigned lockd_gl_disable:1;
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unsigned lockd_vg_disable:1;
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unsigned lockd_lv_disable:1;
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unsigned lockd_gl_removed:1;
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unsigned lockd_vg_rescan:1;
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unsigned lockd_vg_default_sh:1;
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unsigned lockd_vg_enforce_sh:1;
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/*
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* Filtering.
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*/
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struct dev_filter *lvmetad_filter; /* pre-lvmetad filter chain */
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struct dev_filter *filter; /* post-lvmetad filter chain */
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struct dev_filter *full_filter; /* lvmetad_filter + filter */
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int dump_filter; /* Dump filter when exiting? */
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/*
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* Configuration.
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*/
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struct dm_list config_files; /* master lvm config + any existing tag configs */
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struct profile_params *profile_params; /* profile handling params including loaded profile configs */
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struct dm_config_tree *cft; /* the whole cascade: CONFIG_STRING -> CONFIG_PROFILE -> CONFIG_FILE/CONFIG_MERGED_FILES */
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struct dm_hash_table *cft_def_hash; /* config definition hash used for validity check (item type + item recognized) */
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struct config_info default_settings; /* selected settings with original default/configured value which can be changed during cmd processing */
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struct config_info current_settings; /* may contain changed values compared to default_settings */
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/*
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* Archives and backups.
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*/
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struct archive_params *archive_params;
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struct backup_params *backup_params;
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const char *stripe_filler;
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/*
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* Host tags.
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*/
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struct dm_list tags; /* list of defined tags */
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int hosttags;
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/*
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* Paths.
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*/
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const char *lib_dir; /* cache value global/library_dir */
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char system_dir[PATH_MAX];
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char dev_dir[PATH_MAX];
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char proc_dir[PATH_MAX];
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/*
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* Buffers.
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*/
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char display_buffer[NAME_LEN * 10]; /* ring buffer for upto 10 longest vg/lv names */
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unsigned display_lvname_idx; /* index to ring buffer */
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char *linebuffer;
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/*
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* Others - unsorted.
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*/
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const char *report_list_item_separator;
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const char *time_format;
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unsigned rand_seed;
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};
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/*
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* system_dir may be NULL to use the default value.
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* The environment variable LVM_SYSTEM_DIR always takes precedence.
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*/
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struct cmd_context *create_toolcontext(unsigned is_long_lived,
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const char *system_dir,
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unsigned set_buffering,
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unsigned threaded,
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unsigned set_connections,
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unsigned set_filters);
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void destroy_toolcontext(struct cmd_context *cmd);
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int refresh_toolcontext(struct cmd_context *cmd);
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int refresh_filters(struct cmd_context *cmd);
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int process_profilable_config(struct cmd_context *cmd);
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int config_files_changed(struct cmd_context *cmd);
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int init_lvmcache_orphans(struct cmd_context *cmd);
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int init_filters(struct cmd_context *cmd, unsigned load_persistent_cache);
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int init_connections(struct cmd_context *cmd);
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struct format_type *get_format_by_name(struct cmd_context *cmd, const char *format);
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const char *system_id_from_string(struct cmd_context *cmd, const char *str);
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#endif
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