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418663b61c
We've used udev fallback code till now to check whether udev created/removed the entries in /dev correctly and if not, a repair was done (giving a warning messagea about that). This patch adds a possibility to enable this additional check and subsequent fallback only when required (debugging purposes mostly) and trust udev completely. So let's disable the fallback code by default and add a new configuration option "activation/udev_fallback". (The original code for creating the nodes will still be used in case the device directory that is set in lvm.conf differs from the one that udev uses and also when activation/udev_rules is set to 0 - otherwise we would end up with no nodes/symlinks at all)
125 lines
3.5 KiB
C
125 lines
3.5 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 <stdio.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 verbose;
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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 config_tree;
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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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/* 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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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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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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const char *hostname;
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const char *kernel_vsn;
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unsigned rand_seed;
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char *linebuffer;
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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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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 partial_activation:1;
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unsigned si_unit_consistency:1;
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unsigned metadata_read_only:1;
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unsigned independent_metadata_areas:1; /* Active formats have MDAs outside PVs */
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struct dev_filter *filter;
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int dump_filter; /* Dump filter when exiting? */
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struct dm_list config_files;
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int config_valid;
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struct config_tree *cft;
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struct config_tree *cft_override;
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struct config_info default_settings;
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struct config_info current_settings;
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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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/* List of defined tags */
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struct dm_list tags;
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int hosttags;
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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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char sysfs_dir[PATH_MAX]; /* FIXME Use global value instead. */
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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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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 config_files_changed(struct cmd_context *cmd);
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int init_lvmcache_orphans(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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#endif
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