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Lock adoption is not part of standard command behavior, but can be used for manual recovery or cleanup from unexpected failure cases. Like other lockopt values, they are hidden options for --lockopt. Different lock managers will behave differently. Adopting locks with lvmlockd -A1 is more accurate and automatic. --lockopt adoptls . for vgchange --lockstart . adopt existing ls, or fail if no existing lockspace is found --lockopt adoptgl | adoptvg | adoptlv . for commands using lvmlockd locks . adopt orphan gl/vg/lv lock, or fail the lock request if no orphan lock is found . will fail if orphan lock exists with a different lock mode . command may still continue with a failed shared lock request --lockopt adopt . for lockstart or any command using lvmlockd locks . adopt existing lockspace, or start lockspace if none exists . adopt orphan gl/vg/lv lock, or acquire new lock if no orphan found . will fail if orphan lock exists with a different lock mode . command may still continue with a failed shared lock request . with dlm this option only works for ls
290 lines
7.9 KiB
C
290 lines
7.9 KiB
C
/*
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* Copyright (C) 2014-2015 Red Hat, Inc.
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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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#ifndef _LVMLOCKD_H
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#define _LVMLOCKD_H
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#include "libdaemon/client/config-util.h"
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#include "libdaemon/client/daemon-client.h"
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#include "lib/metadata/metadata-exported.h" /* is_lockd_type() */
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#define LOCKD_SANLOCK_LV_NAME "lvmlock"
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/* lockd_lv flags */
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#define LDLV_MODE_NO_SH 0x00000001
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#define LDLV_PERSISTENT 0x00000002
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#define LDLV_SH_EXISTS_OK 0x00000004
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/* lvmlockd result flags */
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#define LD_RF_NO_LOCKSPACES 0x00000001
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#define LD_RF_NO_GL_LS 0x00000002
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#define LD_RF_WARN_GL_REMOVED 0x00000004
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#define LD_RF_DUP_GL_LS 0x00000008
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#define LD_RF_NO_LM 0x00000010
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#define LD_RF_SH_EXISTS 0x00000020
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/* lockd_state flags */
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#define LDST_EX 0x00000001
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#define LDST_SH 0x00000002
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#define LDST_FAIL_REQUEST 0x00000004
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#define LDST_FAIL_NOLS 0x00000008
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#define LDST_FAIL_STARTING 0x00000010
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#define LDST_FAIL_OTHER 0x00000020
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#define LDST_FAIL (LDST_FAIL_REQUEST | LDST_FAIL_NOLS | LDST_FAIL_STARTING | LDST_FAIL_OTHER)
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/* --lockopt flags */
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#define LOCKOPT_FORCE 0x00000001
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#define LOCKOPT_SHUPDATE 0x00000002
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#define LOCKOPT_NOREFRESH 0x00000004
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#define LOCKOPT_SKIPGL 0x00000008
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#define LOCKOPT_SKIPVG 0x00000010
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#define LOCKOPT_SKIPLV 0x00000020
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#define LOCKOPT_AUTO 0x00000040
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#define LOCKOPT_NOWAIT 0x00000080
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#define LOCKOPT_AUTONOWAIT 0x00000100
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#define LOCKOPT_ADOPTLS 0x00000200
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#define LOCKOPT_ADOPTGL 0x00000400
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#define LOCKOPT_ADOPTVG 0x00000800
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#define LOCKOPT_ADOPTLV 0x00001000
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#define LOCKOPT_ADOPT 0x00002000
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void lockd_lockopt_get_flags(const char *str, uint32_t *flags);
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#ifdef LVMLOCKD_SUPPORT
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struct lvresize_params;
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struct lvcreate_params;
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/* lvmlockd connection and communication */
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void lvmlockd_set_socket(const char *sock);
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void lvmlockd_set_use(int use);
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int lvmlockd_use(void);
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void lvmlockd_init(struct cmd_context *cmd);
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void lvmlockd_connect(void);
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void lvmlockd_disconnect(void);
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/* vgcreate/vgremove use init/free */
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int lockd_init_vg(struct cmd_context *cmd, struct volume_group *vg, const char *lock_type, int lv_lock_count);
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int lockd_free_vg_before(struct cmd_context *cmd, struct volume_group *vg, int changing, int yes);
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void lockd_free_vg_final(struct cmd_context *cmd, struct volume_group *vg);
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/* vgrename */
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int lockd_rename_vg_before(struct cmd_context *cmd, struct volume_group *vg);
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int lockd_rename_vg_final(struct cmd_context *cmd, struct volume_group *vg, int success);
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/* start and stop the lockspace for a vg */
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int lockd_start_vg(struct cmd_context *cmd, struct volume_group *vg, int *exists);
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int lockd_stop_vg(struct cmd_context *cmd, struct volume_group *vg);
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int lockd_start_wait(struct cmd_context *cmd);
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/* locking */
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int lockd_global_create(struct cmd_context *cmd, const char *def_mode, const char *vg_lock_type);
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int lockd_global(struct cmd_context *cmd, const char *def_mode);
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int lockd_vg(struct cmd_context *cmd, const char *vg_name, const char *def_mode,
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uint32_t flags, uint32_t *lockd_state);
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int lockd_vg_update(struct volume_group *vg);
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int lockd_lv_name(struct cmd_context *cmd, struct volume_group *vg,
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const char *lv_name, struct id *lv_id,
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const char *lock_args, const char *def_mode, uint32_t flags);
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int lockd_lv(struct cmd_context *cmd, struct logical_volume *lv,
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const char *def_mode, uint32_t flags);
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int lockd_lv_resize(struct cmd_context *cmd, struct logical_volume *lv,
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const char *def_mode, uint32_t flags, struct lvresize_params *lp);
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/* lvcreate/lvremove use init/free */
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int lockd_init_lv(struct cmd_context *cmd, struct volume_group *vg, struct logical_volume *lv,
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struct lvcreate_params *lp);
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int lockd_init_lv_args(struct cmd_context *cmd, struct volume_group *vg,
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struct logical_volume *lv, const char *lock_type, const char **lock_args);
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int lockd_free_lv(struct cmd_context *cmd, struct volume_group *vg,
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const char *lv_name, struct id *lv_id, const char *lock_args);
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const char *lockd_running_lock_type(struct cmd_context *cmd, int *found_multiple);
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int handle_sanlock_lv(struct cmd_context *cmd, struct volume_group *vg);
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int lockd_lv_uses_lock(struct logical_volume *lv);
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int lockd_lv_refresh(struct cmd_context *cmd, struct lvresize_params *lp);
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int lockd_query_lv(struct cmd_context *cmd, struct logical_volume *lv, int *ex, int *sh);
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#else /* LVMLOCKD_SUPPORT */
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static inline void lvmlockd_set_socket(const char *sock)
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{
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}
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static inline void lvmlockd_set_use(int use)
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{
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}
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static inline void lvmlockd_init(struct cmd_context *cmd)
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{
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}
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static inline void lvmlockd_disconnect(void)
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{
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}
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static inline void lvmlockd_connect(void)
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{
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}
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static inline int lvmlockd_use(void)
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{
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return 0;
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}
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static inline int lockd_init_vg(struct cmd_context *cmd, struct volume_group *vg, const char *lock_type, int lv_lock_count)
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{
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return 1;
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}
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static inline int lockd_free_vg_before(struct cmd_context *cmd, struct volume_group *vg, int changing)
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{
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return 1;
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}
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static inline void lockd_free_vg_final(struct cmd_context *cmd, struct volume_group *vg)
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{
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return;
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}
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static inline int lockd_rename_vg_before(struct cmd_context *cmd, struct volume_group *vg)
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{
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return 1;
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}
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static inline int lockd_rename_vg_final(struct cmd_context *cmd, struct volume_group *vg, int success)
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{
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return 1;
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}
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static inline int lockd_start_vg(struct cmd_context *cmd, struct volume_group *vg, int *exists)
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{
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return 0;
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}
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static inline int lockd_stop_vg(struct cmd_context *cmd, struct volume_group *vg)
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{
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return 0;
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}
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static inline int lockd_start_wait(struct cmd_context *cmd)
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{
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return 0;
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}
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static inline int lockd_global_create(struct cmd_context *cmd, const char *def_mode, const char *vg_lock_type)
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{
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/*
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* When lvm is built without lvmlockd support, creating a VG with
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* a shared lock type should fail.
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*/
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if (is_lockd_type(vg_lock_type)) {
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log_error("Using a shared lock type requires lvmlockd.");
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return 0;
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}
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return 1;
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}
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static inline int lockd_global(struct cmd_context *cmd, const char *def_mode)
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{
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return 1;
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}
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static inline int lockd_vg(struct cmd_context *cmd, const char *vg_name, const char *def_mode,
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uint32_t flags, uint32_t *lockd_state)
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{
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*lockd_state = 0;
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return 1;
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}
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static inline int lockd_vg_update(struct volume_group *vg)
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{
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return 1;
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}
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static inline int lockd_lv_name(struct cmd_context *cmd, struct volume_group *vg,
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const char *lv_name, struct id *lv_id,
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const char *lock_args, const char *def_mode, uint32_t flags)
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{
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return 1;
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}
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static inline int lockd_lv(struct cmd_context *cmd, struct logical_volume *lv,
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const char *def_mode, uint32_t flags)
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{
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return 1;
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}
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static inline int lockd_lv_resize(struct cmd_context *cmd, struct logical_volume *lv,
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const char *def_mode, uint32_t flags, struct lvresize_params *lp)
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{
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return 1;
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}
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static inline int lockd_init_lv(struct cmd_context *cmd, struct volume_group *vg,
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struct logical_volume *lv, struct lvcreate_params *lp)
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{
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return 1;
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}
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static inline int lockd_init_lv_args(struct cmd_context *cmd, struct volume_group *vg,
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struct logical_volume *lv, const char *lock_type, const char **lock_args)
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{
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return 1;
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}
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static inline int lockd_free_lv(struct cmd_context *cmd, struct volume_group *vg,
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const char *lv_name, struct id *lv_id, const char *lock_args)
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{
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return 1;
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}
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static inline const char *lockd_running_lock_type(struct cmd_context *cmd, int *found_multiple)
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{
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log_error("Using a shared lock type requires lvmlockd.");
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return NULL;
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}
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static inline int handle_sanlock_lv(struct cmd_context *cmd, struct volume_group *vg)
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{
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return 0;
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}
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static inline int lockd_lv_uses_lock(struct logical_volume *lv)
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{
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return 0;
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}
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static inline int lockd_lv_refresh(struct cmd_context *cmd, struct lvresize_params *lp)
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{
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return 0;
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}
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static inline int lockd_query_lv(struct cmd_context *cmd, struct logical_volume *lv, int *ex, int *sh)
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{
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return 0;
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}
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#endif /* LVMLOCKD_SUPPORT */
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#endif /* _LVMLOCKD_H */
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