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875012fb5d
Avoid the sanlock add_lockspace delay in vgchange --lockstart by adding --lockopt nodelay. This is for testing, and is not safe to use in general.
745 lines
19 KiB
C
745 lines
19 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 _LVM_LVMLOCKD_INTERNAL_H
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#define _LVM_LVMLOCKD_INTERNAL_H
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#include "base/memory/container_of.h"
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#define MAX_NAME 64
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#define MAX_ARGS 64
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#define R_NAME_GL_DISABLED "_GLLK_disabled"
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#define R_NAME_GL "GLLK"
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#define R_NAME_VG "VGLK"
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#define S_NAME_GL_DLM "lvm_global"
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#define S_NAME_GL_IDM "lvm_global"
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#define LVM_LS_PREFIX "lvm_" /* ls name is prefix + vg_name */
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/* global lockspace name for sanlock is a vg name */
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/* lock manager types */
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enum {
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LD_LM_NONE = 0,
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LD_LM_UNUSED = 1, /* place holder so values match lib/locking/lvmlockd.h */
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LD_LM_DLM = 2,
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LD_LM_SANLOCK = 3,
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LD_LM_IDM = 4,
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};
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/* operation types */
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enum {
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LD_OP_HELLO = 1,
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LD_OP_QUIT,
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LD_OP_INIT,
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LD_OP_FREE,
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LD_OP_START,
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LD_OP_STOP,
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LD_OP_LOCK,
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LD_OP_UPDATE,
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LD_OP_CLOSE,
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LD_OP_ENABLE,
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LD_OP_DISABLE,
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LD_OP_START_WAIT,
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LD_OP_STOP_ALL,
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LD_OP_DUMP_INFO,
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LD_OP_DUMP_LOG,
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LD_OP_RENAME_BEFORE,
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LD_OP_RENAME_FINAL,
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LD_OP_RUNNING_LM,
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LD_OP_FIND_FREE_LOCK,
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LD_OP_KILL_VG,
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LD_OP_DROP_VG,
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LD_OP_BUSY,
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LD_OP_QUERY_LOCK,
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LD_OP_REFRESH_LV,
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};
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/* resource types */
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enum {
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LD_RT_GL = 1,
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LD_RT_VG,
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LD_RT_LV,
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};
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/* lock modes, more restrictive must be larger value */
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enum {
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LD_LK_IV = -1,
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LD_LK_UN = 0,
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LD_LK_NL = 1,
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LD_LK_SH = 2,
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LD_LK_EX = 3,
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};
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struct list_head {
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struct list_head *next, *prev;
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};
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struct client {
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struct list_head list;
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pthread_mutex_t mutex;
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int pid;
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int fd;
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int pi;
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uint32_t id;
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unsigned int recv : 1;
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unsigned int dead : 1;
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unsigned int poll_ignore : 1;
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unsigned int lock_ops : 1;
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char name[MAX_NAME+1];
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};
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#define LD_AF_PERSISTENT 0x00000001
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#define LD_AF_NO_CLIENT 0x00000002
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#define LD_AF_UNLOCK_CANCEL 0x00000004
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#define LD_AF_NEXT_VERSION 0x00000008
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#define LD_AF_WAIT 0x00000010
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#define LD_AF_FORCE 0x00000020
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#define LD_AF_EX_DISABLE 0x00000040
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#define LD_AF_ENABLE 0x00000080
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#define LD_AF_DISABLE 0x00000100
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#define LD_AF_SEARCH_LS 0x00000200
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#define LD_AF_WAIT_STARTING 0x00001000
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#define LD_AF_DUP_GL_LS 0x00002000
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#define LD_AF_ADOPT 0x00010000 /* adopt ok but not required */
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#define LD_AF_WARN_GL_REMOVED 0x00020000
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#define LD_AF_LV_LOCK 0x00040000
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#define LD_AF_LV_UNLOCK 0x00080000
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#define LD_AF_SH_EXISTS 0x00100000
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#define LD_AF_ADOPT_ONLY 0x00200000 /* adopt orphan or fail */
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#define LD_AF_NODELAY 0x00400000
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/*
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* Number of times to repeat a lock request after
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* a lock conflict (-EAGAIN) if unspecified in the
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* request.
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*/
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#define DEFAULT_MAX_RETRIES 4
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struct pvs {
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char **path;
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int num;
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};
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struct action {
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struct list_head list;
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uint32_t client_id;
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uint32_t flags; /* LD_AF_ */
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uint32_t version;
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uint64_t host_id;
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uint64_t lv_size_bytes;
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int8_t op; /* operation type LD_OP_ */
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int8_t rt; /* resource type LD_RT_ */
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int8_t mode; /* lock mode LD_LK_ */
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int8_t lm_type; /* lock manager: LM_DLM, LM_SANLOCK */
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int retries;
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int max_retries;
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int result;
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int lm_rv; /* return value from lm_ function */
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int align_mb;
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char *path;
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char vg_uuid[64];
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char vg_name[MAX_NAME+1];
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char lv_name[MAX_NAME+1];
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char lv_uuid[MAX_NAME+1];
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char vg_args[MAX_ARGS+1];
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char lv_args[MAX_ARGS+1];
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char vg_sysid[MAX_NAME+1];
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struct pvs pvs; /* PV list for idm */
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};
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struct resource {
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struct list_head list; /* lockspace.resources */
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char name[MAX_NAME+1]; /* vg name or lv name */
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int8_t type; /* resource type LD_RT_ */
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int8_t mode;
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int8_t adopt_mode;
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unsigned int sh_count; /* number of sh locks on locks list */
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uint32_t version;
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uint32_t last_client_id; /* last client_id to lock or unlock resource */
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unsigned int lm_init : 1; /* lm_data is initialized */
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unsigned int adopt : 1; /* temp flag in remove_inactive_lvs */
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unsigned int version_zero_valid : 1;
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unsigned int use_vb : 1;
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struct list_head locks;
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struct list_head actions;
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char lv_args[MAX_ARGS+1];
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char lm_data[]; /* lock manager specific data */
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};
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#define LD_LF_PERSISTENT 0x00000001
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struct lock {
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struct list_head list; /* resource.locks */
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int8_t mode; /* lock mode LD_LK_ */
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uint32_t version;
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uint32_t flags; /* LD_LF_ */
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uint32_t client_id; /* may be 0 for persistent or internal locks */
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};
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struct lockspace {
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struct list_head list; /* lockspaces */
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char name[MAX_NAME+1];
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char vg_name[MAX_NAME+1];
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char vg_uuid[64];
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char vg_args[MAX_ARGS+1]; /* lock manager specific args */
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char vg_sysid[MAX_NAME+1];
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int8_t lm_type; /* lock manager: LM_DLM, LM_SANLOCK */
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void *lm_data;
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uint64_t host_id;
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uint64_t free_lock_offset; /* for sanlock, start search for free lock here */
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struct pvs pvs; /* for idm: PV list */
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uint32_t start_client_id; /* client_id that started the lockspace */
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pthread_t thread; /* makes synchronous lock requests */
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pthread_cond_t cond;
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pthread_mutex_t mutex;
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unsigned int create_fail : 1;
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unsigned int create_done : 1;
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unsigned int thread_work : 1;
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unsigned int thread_stop : 1;
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unsigned int thread_done : 1;
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unsigned int sanlock_gl_enabled: 1;
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unsigned int sanlock_gl_dup: 1;
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unsigned int free_vg: 1;
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unsigned int kill_vg: 1;
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unsigned int drop_vg: 1;
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struct list_head actions; /* new client actions */
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struct list_head resources; /* resource/lock state for gl/vg/lv */
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};
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/* val_blk version */
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#define VAL_BLK_VERSION 0x0101
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/* val_blk flags */
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#define VBF_REMOVED 0x0001
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struct val_blk {
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uint16_t version;
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uint16_t flags;
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uint32_t r_version;
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};
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/* lm_unlock flags */
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#define LMUF_FREE_VG 0x00000001
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static inline void INIT_LIST_HEAD(struct list_head *list)
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{
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list->next = list;
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list->prev = list;
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}
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static inline void __list_add(struct list_head *new,
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struct list_head *prev,
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struct list_head *next)
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{
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next->prev = new;
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new->next = next;
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new->prev = prev;
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prev->next = new;
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}
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static inline void __list_del(struct list_head *prev, struct list_head *next)
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{
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next->prev = prev;
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prev->next = next;
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}
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static inline void list_add(struct list_head *new, struct list_head *head)
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{
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__list_add(new, head, head->next);
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}
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static inline void list_add_tail(struct list_head *new, struct list_head *head)
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{
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__list_add(new, head->prev, head);
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}
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static inline void list_del(struct list_head *entry)
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{
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__list_del(entry->prev, entry->next);
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}
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static inline int list_empty(const struct list_head *head)
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{
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return head->next == head;
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}
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#define list_entry(ptr, type, member) \
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container_of(ptr, type, member)
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#define list_first_entry(ptr, type, member) \
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list_entry((ptr)->next, type, member)
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#define list_for_each_entry(pos, head, member) \
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for (pos = list_entry((head)->next, typeof(*pos), member); \
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&pos->member != (head); \
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pos = list_entry(pos->member.next, typeof(*pos), member))
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#define list_for_each_entry_safe(pos, n, head, member) \
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for (pos = list_entry((head)->next, typeof(*pos), member), \
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n = list_entry(pos->member.next, typeof(*pos), member); \
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&pos->member != (head); \
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pos = n, n = list_entry(n->member.next, typeof(*n), member))
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/* to improve readability */
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#define WAIT 1
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#define NO_WAIT 0
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#define FORCE 1
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#define NO_FORCE 0
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/*
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* global variables
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*/
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#ifndef EXTERN
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#define EXTERN extern
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#define INIT(X)
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#else
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#undef EXTERN
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#define EXTERN
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#define INIT(X) =X
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#endif
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/*
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* gl_type_static and gl_use_ are set by command line or config file
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* to specify whether the global lock comes from dlm or sanlock.
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* Without a static setting, lvmlockd will figure out where the
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* global lock should be (but it could get mixed up in cases where
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* both sanlock and dlm vgs exist.)
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*
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* gl_use_dlm means that the gl should come from lockspace gl_lsname_dlm
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* gl_use_sanlock means that the gl should come from lockspace gl_lsname_sanlock
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*
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* gl_use_dlm has precedence over gl_use_sanlock, so if a node sees both
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* dlm and sanlock vgs, it will use the dlm gl.
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*
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* gl_use_ is set when the first evidence of that lm_type is seen
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* in any command.
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*
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* gl_lsname_sanlock is set when the first vg is seen in which an
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* enabled gl is exists, or when init_vg creates a vg with gl enabled,
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* or when enable_gl is used.
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*
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* gl_lsname_sanlock is cleared when free_vg deletes a vg with gl enabled
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* or when disable_gl matches.
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*/
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EXTERN int gl_type_static;
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EXTERN int gl_use_dlm;
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EXTERN int gl_use_sanlock;
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EXTERN int gl_use_idm;
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EXTERN int gl_vg_removed;
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EXTERN char gl_lsname_dlm[MAX_NAME+1];
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EXTERN char gl_lsname_sanlock[MAX_NAME+1];
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EXTERN char gl_lsname_idm[MAX_NAME+1];
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EXTERN int global_dlm_lockspace_exists;
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EXTERN int global_idm_lockspace_exists;
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EXTERN int daemon_test; /* run as much as possible without a live lock manager */
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EXTERN int daemon_debug;
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EXTERN int daemon_host_id;
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EXTERN const char *daemon_host_id_file;
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EXTERN int sanlock_io_timeout;
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/*
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* This flag is set to 1 if we see multiple vgs with the global
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* lock enabled. While this is set, we return a special flag
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* with the vg lock result indicating to the lvm command that
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* there is a duplicate gl in the vg which should be resolved.
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* While this is set, find_lockspace_name has the side job of
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* counting the number of lockspaces with enabled gl's so that
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* this can be set back to zero when the duplicates are disabled.
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*/
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EXTERN int sanlock_gl_dup;
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void log_level(int level, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
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#define log_debug(fmt, args...) log_level(LOG_DEBUG, fmt, ##args)
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#define log_error(fmt, args...) log_level(LOG_ERR, fmt, ##args)
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#define log_warn(fmt, args...) log_level(LOG_WARNING, fmt, ##args)
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#define log_sys_debug(x, y) \
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log_debug("%s: %s failed: %s", y, x, strerror(errno))
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struct lockspace *alloc_lockspace(void);
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int lockspaces_empty(void);
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int last_string_from_args(char *args_in, char *last);
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int version_from_args(char *args, unsigned int *major, unsigned int *minor, unsigned int *patch);
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static inline const char *mode_str(int x)
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{
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switch (x) {
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case LD_LK_IV:
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return "iv";
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case LD_LK_UN:
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return "un";
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case LD_LK_NL:
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return "nl";
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case LD_LK_SH:
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return "sh";
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case LD_LK_EX:
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return "ex";
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default:
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return ".";
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};
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}
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#ifdef LOCKDDLM_SUPPORT
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int lm_init_vg_dlm(char *ls_name, char *vg_name, uint32_t flags, char *vg_args);
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int lm_prepare_lockspace_dlm(struct lockspace *ls);
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int lm_add_lockspace_dlm(struct lockspace *ls, int adopt_only, int adopt_ok);
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int lm_purge_locks_dlm(struct lockspace *ls);
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int lm_rem_lockspace_dlm(struct lockspace *ls, int free_vg);
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int lm_lock_dlm(struct lockspace *ls, struct resource *r, int ld_mode,
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struct val_blk *vb_out, int adopt_only, int adopt_ok);
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int lm_convert_dlm(struct lockspace *ls, struct resource *r,
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int ld_mode, uint32_t r_version);
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int lm_unlock_dlm(struct lockspace *ls, struct resource *r,
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uint32_t r_version, uint32_t lmu_flags);
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int lm_rem_resource_dlm(struct lockspace *ls, struct resource *r);
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int lm_get_lockspaces_dlm(struct list_head *ls_rejoin);
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int lm_data_size_dlm(void);
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int lm_is_running_dlm(void);
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int lm_hosts_dlm(struct lockspace *ls, int notify);
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int lm_refresh_lv_start_dlm(struct action *act);
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int lm_refresh_lv_check_dlm(struct action *act);
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static inline int lm_support_dlm(void)
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{
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return 1;
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}
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#else
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static inline int lm_init_vg_dlm(char *ls_name, char *vg_name, uint32_t flags, char *vg_args)
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{
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return -1;
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}
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static inline int lm_prepare_lockspace_dlm(struct lockspace *ls)
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{
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return -1;
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}
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static inline int lm_add_lockspace_dlm(struct lockspace *ls, int adopt_only, int adopt_ok)
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{
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return -1;
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}
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static inline int lm_purge_locks_dlm(struct lockspace *ls)
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{
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return -1;
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}
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static inline int lm_rem_lockspace_dlm(struct lockspace *ls, int free_vg)
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{
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return -1;
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}
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static inline int lm_lock_dlm(struct lockspace *ls, struct resource *r, int ld_mode,
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struct val_blk *vb_out, int adopt_only, int adopt_ok)
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{
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return -1;
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}
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static inline int lm_convert_dlm(struct lockspace *ls, struct resource *r,
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int ld_mode, uint32_t r_version)
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{
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return -1;
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}
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static inline int lm_unlock_dlm(struct lockspace *ls, struct resource *r,
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uint32_t r_version, uint32_t lmu_flags)
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{
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return -1;
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}
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static inline int lm_rem_resource_dlm(struct lockspace *ls, struct resource *r)
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{
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return -1;
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}
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static inline int lm_get_lockspaces_dlm(struct list_head *ls_rejoin)
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{
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return -1;
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}
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static inline int lm_data_size_dlm(void)
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{
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return -1;
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}
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static inline int lm_is_running_dlm(void)
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{
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return 0;
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}
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static inline int lm_support_dlm(void)
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{
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return 0;
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}
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static inline int lm_hosts_dlm(struct lockspace *ls, int notify)
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{
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return 0;
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}
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static inline int lm_refresh_lv_start_dlm(struct action *act)
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{
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return 0;
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}
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static inline int lm_refresh_lv_check_dlm(struct action *act)
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{
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return 0;
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}
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#endif /* dlm support */
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#ifdef LOCKDSANLOCK_SUPPORT
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|
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int lm_init_vg_sanlock(char *ls_name, char *vg_name, uint32_t flags, char *vg_args, int opt_align_mb);
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int lm_init_lv_sanlock(struct lockspace *ls, char *lv_name, char *vg_args, char *lv_args);
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int lm_free_lv_sanlock(struct lockspace *ls, struct resource *r);
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int lm_rename_vg_sanlock(char *ls_name, char *vg_name, uint32_t flags, char *vg_args);
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int lm_prepare_lockspace_sanlock(struct lockspace *ls);
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int lm_add_lockspace_sanlock(struct lockspace *ls, int adopt_only, int adopt_ok, int nodelay);
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int lm_rem_lockspace_sanlock(struct lockspace *ls, int free_vg);
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int lm_lock_sanlock(struct lockspace *ls, struct resource *r, int ld_mode,
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struct val_blk *vb_out, int *retry,
|
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int adopt_only, int adopt_ok);
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int lm_convert_sanlock(struct lockspace *ls, struct resource *r,
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int ld_mode, uint32_t r_version);
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int lm_unlock_sanlock(struct lockspace *ls, struct resource *r,
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uint32_t r_version, uint32_t lmu_flags);
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int lm_able_gl_sanlock(struct lockspace *ls, int enable);
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int lm_ex_disable_gl_sanlock(struct lockspace *ls);
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int lm_hosts_sanlock(struct lockspace *ls, int notify);
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int lm_rem_resource_sanlock(struct lockspace *ls, struct resource *r);
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int lm_gl_is_enabled(struct lockspace *ls);
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int lm_get_lockspaces_sanlock(struct list_head *ls_rejoin);
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int lm_data_size_sanlock(void);
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|
int lm_is_running_sanlock(void);
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int lm_find_free_lock_sanlock(struct lockspace *ls, uint64_t lv_size_bytes);
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|
|
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static inline int lm_support_sanlock(void)
|
|
{
|
|
return 1;
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|
}
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#else
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static inline int lm_init_vg_sanlock(char *ls_name, char *vg_name, uint32_t flags, char *vg_args, int opt_align_mb)
|
|
{
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|
return -1;
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|
}
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|
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static inline int lm_init_lv_sanlock(struct lockspace *ls, char *lv_name, char *vg_args, char *lv_args)
|
|
{
|
|
return -1;
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|
}
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static inline int lm_free_lv_sanlock(struct lockspace *ls, struct resource *r)
|
|
{
|
|
return -1;
|
|
}
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|
|
static inline int lm_rename_vg_sanlock(char *ls_name, char *vg_name, uint32_t flags, char *vg_args)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_prepare_lockspace_sanlock(struct lockspace *ls)
|
|
{
|
|
return -1;
|
|
}
|
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|
|
static inline int lm_add_lockspace_sanlock(struct lockspace *ls, int adopt_only, int adopt_ok, int nodelay)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_rem_lockspace_sanlock(struct lockspace *ls, int free_vg)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_lock_sanlock(struct lockspace *ls, struct resource *r, int ld_mode,
|
|
struct val_blk *vb_out, int *retry,
|
|
int adopt_only, int adopt_ok)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_convert_sanlock(struct lockspace *ls, struct resource *r,
|
|
int ld_mode, uint32_t r_version)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_unlock_sanlock(struct lockspace *ls, struct resource *r,
|
|
uint32_t r_version, uint32_t lmu_flags)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_able_gl_sanlock(struct lockspace *ls, int enable)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_ex_disable_gl_sanlock(struct lockspace *ls)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_hosts_sanlock(struct lockspace *ls, int notify)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_rem_resource_sanlock(struct lockspace *ls, struct resource *r)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_gl_is_enabled(struct lockspace *ls)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_get_lockspaces_sanlock(struct list_head *ls_rejoin)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_data_size_sanlock(void)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_is_running_sanlock(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int lm_find_free_lock_sanlock(struct lockspace *ls, uint64_t lv_size_bytes);
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_support_sanlock(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif /* sanlock support */
|
|
|
|
#ifdef LOCKDIDM_SUPPORT
|
|
|
|
int lm_data_size_idm(void);
|
|
int lm_init_vg_idm(char *ls_name, char *vg_name, uint32_t flags, char *vg_args);
|
|
int lm_prepare_lockspace_idm(struct lockspace *ls);
|
|
int lm_add_lockspace_idm(struct lockspace *ls, int adopt_only, int adopt_ok);
|
|
int lm_rem_lockspace_idm(struct lockspace *ls, int free_vg);
|
|
int lm_lock_idm(struct lockspace *ls, struct resource *r, int ld_mode,
|
|
struct val_blk *vb_out, char *lv_uuid, struct pvs *pvs,
|
|
int adopt_only, int adopt_ok);
|
|
int lm_convert_idm(struct lockspace *ls, struct resource *r,
|
|
int ld_mode, uint32_t r_version);
|
|
int lm_unlock_idm(struct lockspace *ls, struct resource *r,
|
|
uint32_t r_version, uint32_t lmu_flags);
|
|
int lm_hosts_idm(struct lockspace *ls, int notify);
|
|
int lm_get_lockspaces_idm(struct list_head *ls_rejoin);
|
|
int lm_is_running_idm(void);
|
|
int lm_rem_resource_idm(struct lockspace *ls, struct resource *r);
|
|
|
|
static inline int lm_support_idm(void)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
#else
|
|
|
|
static inline int lm_data_size_idm(void)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_init_vg_idm(char *ls_name, char *vg_name, uint32_t flags,
|
|
char *vg_args)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_prepare_lockspace_idm(struct lockspace *ls)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_add_lockspace_idm(struct lockspace *ls, int adopt_only, int adopt_ok)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_rem_lockspace_idm(struct lockspace *ls, int free_vg)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_lock_idm(struct lockspace *ls, struct resource *r, int ld_mode,
|
|
struct val_blk *vb_out, char *lv_uuid, struct pvs *pvs,
|
|
int adopt_only, int adopt_ok)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_convert_idm(struct lockspace *ls, struct resource *r,
|
|
int ld_mode, uint32_t r_version)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_unlock_idm(struct lockspace *ls, struct resource *r,
|
|
uint32_t r_version, uint32_t lmu_flags)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_hosts_idm(struct lockspace *ls, int notify)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_get_lockspaces_idm(struct list_head *ls_rejoin)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_is_running_idm(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int lm_rem_resource_idm(struct lockspace *ls, struct resource *r)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int lm_support_idm(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif /* Seagate IDM support */
|
|
|
|
#endif /* _LVM_LVMLOCKD_INTERNAL_H */
|