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istgt_lu_disk.c
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/*
* Copyright © 2017-2019 The OpenEBS Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This work is derived from earlier work available under:
*
* Copyright (C) 2008-2012 Daisuke Aoyama <[email protected]>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <inttypes.h>
#include <stdint.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <pthread.h>
#ifdef HAVE_PTHREAD_NP_H
#include <pthread_np.h>
#endif
#include <time.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdbool.h>
#include <sys/eventfd.h>
#ifdef HAVE_UUID_H
#include <uuid.h>
#endif
#include "istgt.h"
#include "istgt_ver.h"
#include "istgt_log.h"
#include "istgt_conf.h"
#include "istgt_sock.h"
#include "istgt_misc.h"
#include "istgt_crc32c.h"
#include "istgt_md5.h"
#include "istgt_iscsi.h"
#include "istgt_iscsi_xcopy.h"
#include "istgt_lu.h"
#include "istgt_proto.h"
#include "istgt_scsi.h"
#include "istgt_queue.h"
#ifdef REPLICATION
#include "istgt_integration.h"
#include "replication.h"
#include "ring_mempool.h"
#endif
#ifdef __FreeBSD__
#include <sys/disk.h>
#endif
#include <assert.h>
#if !defined(__GNUC__)
#undef __attribute__
#define __attribute__(x)
#endif
#ifndef O_FSYNC
#define O_FSYNC O_SYNC
#endif
extern clockid_t clockid;
//#define ISTGT_TRACE_DISK
#ifdef REPLICATION
#define IS_SPEC_BUSY(_spec) \
(_spec->state == ISTGT_LUN_BUSY || \
_spec->ready == false)
#else
#define IS_SPEC_BUSY(_spec) \
(_spec->state == ISTGT_LUN_BUSY)
#endif
#define MAX_DIO_WAIT 30 //loop for 30 seconds
//#define enterblockingcall(lu_cmd, conn)
#define enterblockingcall(macroname) \
{ \
lu_cmd->connGone = 0; \
if(pthread_mutex_lock(&spec->state_mutex) != 0) \
{ \
markedForReturn = 1; \
goto macroname; \
} \
if (IS_SPEC_BUSY(spec)) { \
lu_cmd->data_len = 0; \
lu_cmd->status = ISTGT_SCSI_STATUS_BUSY; \
if(pthread_mutex_unlock(&spec->state_mutex) != 0) \
{ \
markedForReturn = 1; \
goto macroname; \
} \
markedForReturn = 2; \
ISTGT_ERRLOG("Spec is busy!"); \
goto macroname; \
} \
++(spec->ludsk_ref); \
if(pthread_mutex_unlock(&spec->state_mutex) != 0) \
{ \
--(spec->ludsk_ref); \
markedForReturn = 1; \
goto macroname; \
} \
if(pthread_mutex_lock(&conn->diskioflag_mutex) != 0) \
{ \
--(spec->ludsk_ref); \
markedForReturn = 1; \
goto macroname; \
} \
++(conn->diskIoPending); \
if(pthread_mutex_unlock(&conn->diskioflag_mutex) != 0) \
{ \
--(conn->diskIoPending); \
--(spec->ludsk_ref); \
markedForReturn = 1; \
goto macroname; \
} \
} \
macroname:
//#define exitblockingcall(lu_cmd, conn, diskIoPendingL, markedForFree)
#define exitblockingcall(macroname) \
{ \
if(pthread_mutex_lock(&spec->state_mutex) != 0) \
{ \
markedForReturn = 1; \
goto macroname; \
} \
--(spec->ludsk_ref); \
if(pthread_mutex_unlock(&spec->state_mutex) != 0) \
{ \
markedForReturn = 1; \
goto macroname; \
} \
if(pthread_mutex_lock(&conn->diskioflag_mutex) != 0) \
{ \
markedForReturn = 1; \
goto macroname; \
} \
--(conn->diskIoPending); \
diskIoPendingL = conn->diskIoPending; \
if (conn->flagDelayedFree == 1) \
markedForFree = 1; \
if(pthread_mutex_unlock(&conn->diskioflag_mutex) != 0) \
{ \
markedForReturn = 1; \
goto macroname; \
} \
} \
macroname:
#define create_time times[0]
#define errlog(lu_cmd, fmt, ...) \
{ \
syslog(LOG_ERR, "%-18.18s:%4d: %-8.8s: [%u.%x lba%lu+%u %c.%ld.%ld %c.%ld.%ld]" fmt, \
__func__, __LINE__, tinfo, lu_cmd->CmdSN, lu_cmd->cdb[0], lu_cmd->lba, lu_cmd->lblen, \
lu_cmd->caller[lu_cmd->_andx > 1 ? lu_cmd->_andx - 2 : 0], \
lu_cmd->tdiff[lu_cmd->_andx > 1 ? lu_cmd->_andx - 2 : 0].tv_sec, \
lu_cmd->tdiff[lu_cmd->_andx > 1 ? lu_cmd->_andx - 2 : 0].tv_nsec, \
lu_cmd->caller[lu_cmd->_andx > 0 ? lu_cmd->_andx - 1 : 0], \
lu_cmd->tdiff[lu_cmd->_andx > 0 ? lu_cmd->_andx - 1 : 0].tv_sec, \
lu_cmd->tdiff[lu_cmd->_andx > 0 ? lu_cmd->_andx - 1 : 0].tv_nsec, \
##__VA_ARGS__); \
}
typedef enum {
ISTGT_LU_PR_TYPE_WRITE_EXCLUSIVE = 0x01,
ISTGT_LU_PR_TYPE_EXCLUSIVE_ACCESS = 0x03,
ISTGT_LU_PR_TYPE_WRITE_EXCLUSIVE_REGISTRANTS_ONLY = 0x05,
ISTGT_LU_PR_TYPE_EXCLUSIVE_ACCESS_REGISTRANTS_ONLY = 0x06,
ISTGT_LU_PR_TYPE_WRITE_EXCLUSIVE_ALL_REGISTRANTS = 0x07,
ISTGT_LU_PR_TYPE_EXCLUSIVE_ACCESS_ALL_REGISTRANTS = 0x08,
} ISTGT_LU_PR_TYPE;
#define PR_ALLOW(WE,EA,ALLRR,WERR,EARR) \
((((WE)&1) << 4) | (((EA)&1) << 3) | (((ALLRR)&1) << 2) \
| (((WERR)&1) << 1) | (((EARR)&1) << 0))
#define PR_ALLOW_WE 0x0010
#define PR_ALLOW_EA 0x0008
#define PR_ALLOW_ALLRR 0x0004
#define PR_ALLOW_WERR 0x0002
#define PR_ALLOW_EARR 0x0001
#define BUILD_SENSE(SK,ASC,ASCQ) istgt_lu_scsi_build_sense_data(lu_cmd,ISTGT_SCSI_SENSE_ ## SK, (ASC), (ASCQ))
#define BUILD_SENSE2(SK,ASC,ASCQ) istgt_lu_scsi_build_sense_data2(lu_cmd, ISTGT_SCSI_SENSE_ ## SK, (ASC), (ASCQ))
static int istgt_lu_disk_queue_abort_ITL(ISTGT_LU_DISK *spec, const char *initiator_port);
static const char *
istgt_get_disktype_by_ext(const char *file);
static int istgt_lu_disk_unmap(ISTGT_LU_DISK *spec, CONN_Ptr conn, ISTGT_LU_CMD_Ptr lu_cmd, uint8_t *data, int pllen);
int istgt_lu_disk_copy_reservation(ISTGT_LU_DISK *spec_bkp, ISTGT_LU_DISK *spec);
/**
* find_first_bit - find the first set bit in a memory region
* @addr: The address to start the search at
* @size: The maximum size to search
*
* Returns the bit-number of the first set bit
*/
static inline long
find_first_bit(ISTGT_LU_CMD_Ptr lu_cmd)
{
long d0 __attribute__((unused)), d1 __attribute__((unused));
long res, res_final=0;
int iovcnt, i;
uint64_t nbytes;
unsigned long nbits = 0;
const unsigned long * addr;
iovcnt = lu_cmd->iobufindx+1;
for (i=0; i < iovcnt; ++i) {
addr = (const unsigned long *)lu_cmd->iobuf[i].iov_base;
nbytes = lu_cmd->iobuf[i].iov_len;
nbits = nbytes << 3;
nbits += 63;
nbits >>= 6;
if (!nbits)
continue;
#if defined(__x86_64__)
asm volatile(
" repe; scasq\n"
" jz 1f\n"
" subq $8,%%rdi\n"
" bsfq (%%rdi),%%rax\n"
"1: subq %[addr],%%rdi\n"
" shlq $3,%%rdi\n"
" addq %%rdi,%%rax"
:"=a" (res), "=&c" (d0), "=&D" (d1)
:"0" (0ULL), "1" (nbits), "2" (addr),
[addr] "r" (addr) : "memory");
#else
unsigned long idx;
res = 0;
for (idx = 0; idx < nbits; idx++) {
if (addr[idx]) {
res += __builtin_ffsl(addr[idx]) - 1;
break;
} else {
// there is no set bit in this addr part, res should add the bits of addr.
res += sizeof(*addr) << 3;
}
}
#endif
res_final += res;
if ((unsigned long)res != nbits << 6)
return res_final;
}
return res_final;
}
static int
istgt_lu_disk_open_raw(ISTGT_LU_DISK *spec, int flags, int mode)
{
int rc;
errno = 0;
#ifdef REPLICATION
rc = 0;
#else
rc = open(spec->file, flags, mode);
#endif
spec->fderr = rc;
spec->fderrno = errno;
if (rc < 0) {
return -1;
}
spec->fd = rc;
spec->foffset = 0;
return 0;
}
int
istgt_lu_disk_close_raw(ISTGT_LU_DISK *spec)
{
#ifndef REPLICATION
int rc;
if (spec->fd == -1)
return 0;
rc = close(spec->fd);
if (rc < 0) {
return -1;
}
#endif
spec->fd = -1;
spec->foffset = 0;
return 0;
}
static int64_t
istgt_lu_disk_seek_raw(ISTGT_LU_DISK *spec, uint64_t offset)
{
#ifndef REPLICATION
off_t rc;
rc = lseek(spec->fd, (off_t) offset, SEEK_SET);
if (rc < 0) {
return -1;
}
#endif
spec->foffset = offset;
return 0;
}
static int64_t
istgt_lu_disk_sync_raw(ISTGT_LU_DISK *spec, uint64_t offset, uint64_t nbytes)
{
int64_t rc = 0;
#ifndef REPLICATION
rc = (int64_t) fsync(spec->fd);
if (rc < 0) {
return -1;
}
#endif
spec->foffset = offset + nbytes;
return rc;
}
int
istgt_lu_disk_signal_action(ISTGT_LU_Ptr lu, int i, struct timespec *now, istgt_action act)
{
ISTGT_LU_DISK *spec;
int rc;
int signal_worker = 0;
const char *action = (act == ACTION_CLOSE ) ? "close" : "open";
istgt_lun_state st, st1;
istgt_lun_ex_state exst, exst1;
const char *path = "";
if (lu->lun[i].type == ISTGT_LU_LUN_TYPE_NONE) {
ISTGT_TRACELOG(ISTGT_TRACE_DEBUG, "LU%d: LUN%d none\n",
lu->num, i);
lu->lun[i].spec = NULL;
return -1;
}
if (lu->lun[i].type != ISTGT_LU_LUN_TYPE_STORAGE) {
ISTGT_ERRLOG("LU%d: unsupported type\n", lu->num);
return -1;
}
spec = lu->lun[i].spec;
if (spec == NULL) {
ISTGT_NOTICELOG("LU%d: LUN%d spec is found\n", lu->num, i);
return -1;
}
MTX_LOCK(&spec->state_mutex);
st = spec->state;
exst = spec->ex_state;
if (act == ACTION_CLOSE) {
spec->state = ISTGT_LUN_BUSY;
if (spec->ex_state < ISTGT_LUN_CLOSE_PENDING) {
spec->ex_state = ISTGT_LUN_CLOSE_PENDING;
spec->close_started.tv_sec = now->tv_sec;
spec->close_started.tv_nsec = now->tv_nsec;
signal_worker = 1;
} else if ((spec->ex_state == ISTGT_LUN_CLOSE_PENDING) || (spec->ludsk_ref != 0)) {
signal_worker = 1;
}
} else if (act == ACTION_OPEN) {
if (spec->ex_state > ISTGT_LUN_OPEN) {
if (spec->ex_state < ISTGT_LUN_CLOSE) {
spec->open_waiting4close = 1; //open after the pending close
path = "open_after_pending_close";
} else {
spec->ex_state = ISTGT_LUN_OPEN_PENDING;
}
spec->open_started.tv_sec = now->tv_sec;
spec->open_started.tv_nsec = now->tv_nsec;
signal_worker = 1;
} else if (spec->ex_state == ISTGT_LUN_OPEN_PENDING) {
signal_worker = 1;
}
}
st1 = spec->state;
exst1 = spec->ex_state;
MTX_UNLOCK(&spec->state_mutex);
lu->limit_q_size=0;
if (signal_worker == 1) {
/* notify LUN thread */
MTX_LOCK(&spec->complete_queue_mutex);
spec->disk_modify_work_pending = 1;
rc = pthread_cond_signal(&spec->maint_cmd_queue_cond);
MTX_UNLOCK(&spec->complete_queue_mutex);
if (rc != 0) {
ISTGT_ERRLOG("cond signal failed ,lun %d, rc = %d \n",
lu->num, rc);
return -1;
}
}
ISTGT_TRACELOG(ISTGT_TRACE_DEBUG, "LU%d: LUN%d %s %s %s state:%d/%d %d/%d \n",
lu->num, i, action,
signal_worker == 1 ? "signal" : "skip", path,
st, st1, exst, exst1);
return signal_worker;
}
int
istgt_lu_disk_close(ISTGT_LU_Ptr lu, int i)
{
ISTGT_LU_DISK *spec;
IT_NEXUS *nexus;
int rc;
int disk_ref = 0;
int workers_signaled = 0;
struct timespec _s1, _s2, _s3, _wrk, _wrkx, cur_time;
if (lu->lun[i].type == ISTGT_LU_LUN_TYPE_NONE) {
ISTGT_TRACELOG(ISTGT_TRACE_DEBUG, "LU%d: LUN%d none\n", lu->num, i);
lu->lun[i].spec = NULL;
return -1;
}
if (lu->lun[i].type != ISTGT_LU_LUN_TYPE_STORAGE) {
ISTGT_ERRLOG("LU%d: unsupported type\n", lu->num);
return -1;
}
spec = lu->lun[i].spec;
if (spec == NULL) {
ISTGT_NOTICELOG("LU%d: LUN%d spec is not found\n", lu->num, i);
return -1;
}
MTX_LOCK(&spec->state_mutex);
spec->state = ISTGT_LUN_BUSY;
if (spec->ludsk_ref == 0)
workers_signaled = 1;
if (workers_signaled == 0) {
clock_gettime(clockid, &cur_time);
if(cur_time.tv_sec - spec->close_started.tv_sec < 170) {
MTX_UNLOCK(&spec->state_mutex);
return -1;
}
}
spec->ex_state = ISTGT_LUN_CLOSE_INPROGRESS;
MTX_UNLOCK(&spec->state_mutex);
disk_ref = spec->ludsk_ref;
timesdiff(clockid, spec->close_started, _wrkx, _s1)
#ifndef REPLICATION
if (!spec->lu->readonly) {
rc = spec->sync(spec, 0, spec->size);
timesdiff(clockid, _wrkx, _wrk, _s2)
if (rc < 0) {
/* Ignore error */
ISTGT_ERRLOG("LU%d: LUN%d: failed to sync\n", lu->num, i);
}
} else
#endif
{
_wrk.tv_sec = _wrkx.tv_sec;
_wrk.tv_nsec = _wrkx.tv_nsec;
_s2.tv_sec = 0; _s2.tv_nsec = 0;
}
rc = spec->close(spec);
timesdiff(clockid, _wrk, _wrkx, _s3)
if (rc < 0) {
/* Ignore error */
ISTGT_ERRLOG("LU%d: LUN%d failed to close device\n", lu->num, i);
}
lu->lun[i].u.storage.fd = -1;
spec->fd = -1;
MTX_LOCK(&spec->pr_rsv_mutex);
/* release reservation */
xfree(spec->rsv_port);
spec->rsv_port = NULL;
spec->rsv_key = 0;
spec->spc2_reserved = 0;
spec->rsv_scope = 0;
spec->rsv_type = 0;
/* remove all registrations */
for (i = 0; i < spec->npr_keys; i++) {
istgt_lu_disk_free_pr_key(&spec->pr_keys[i]);
}
spec->npr_keys = 0;
for (i = 0; i < MAX_LU_RESERVE; i++) {
memset(&spec->pr_keys[i], 0, sizeof(spec->pr_keys[i]));
}
MTX_UNLOCK(&spec->pr_rsv_mutex);
TAILQ_FOREACH(nexus, &spec->nexus, nexus_next) {
if (nexus == NULL)
break;
nexus->ua_pending &= ISTGT_UA_NONE;
}
MTX_LOCK(&spec->state_mutex);
spec->ex_state = ISTGT_LUN_CLOSE;
MTX_UNLOCK(&spec->state_mutex);
lu->limit_q_size = 0;
ISTGT_LOG("LU%d: LUN%d %s: storage_offline, holds:%d [%ld.%ld - %ld.%ld - %ld.%ld]\n",
lu->num, i, lu->name ? lu->name : "-", disk_ref,
_s1.tv_sec, _s1.tv_nsec, _s2.tv_sec, _s2.tv_nsec, _s3.tv_sec, _s3.tv_nsec);
return 0;
}
int
istgt_lu_disk_post_open(ISTGT_LU_DISK *spec)
{
ISTGT_LU_Ptr lu;
int i;
int rc = 0;
int errorno = 0;
lu = spec->lu;
i = spec->lun;
#ifndef REPLICATION
if (!lu->readonly) {
rc = spec->allocate(spec);
if (rc < 0) {
ISTGT_ERRLOG("LU%d: LUN%d: allocate error\n",
lu->num, i);
errorno = errno;
goto error_return;
}
}
#endif
if (spec->rsize == 0) {
//TODO
#ifndef REPLICATION
#ifdef __FreeBSD__
off_t rsize = 0;
uint32_t lbPerRecord = 0;
rc = ioctl(spec->fd, DIOCGSTRIPESIZE, &rsize);
if (rc != -1) {
ISTGT_ERRLOG("LU%d: LUN%d: ioctl-blksize:%lu \n", lu->num, i, rsize);
spec->rsize = rsize;
if (spec->rsize > spec->blocklen) {
lbPerRecord = spec->rsize / ((uint32_t)(spec->blocklen));
spec->lb_per_rec = lbPerRecord;
spec->rshiftreal = fls(lbPerRecord) - 1;
if (lbPerRecord & (lbPerRecord-1)) {
ISTGT_ERRLOG("LU%d: LUN%d: invalid blocklen:%lu zfsrecordSize:%u\n",
lu->num, i, spec->blocklen, spec->rsize);
}
}
} else {
ISTGT_ERRLOG("LU%d: LUN%d: ioctl-blksize:%lu failed:%d %d\n", lu->num, i, rsize, rc, errno);
}
#endif
#endif
}
rc = spec->setcache(spec);
if (rc < 0) {
ISTGT_ERRLOG("LU%d: LUN%d: setcache error\n", lu->num, i);
errorno = errno;
goto error_return;
}
if(spec->persist){
ISTGT_LOG("READING RESERVATIONS FROM ZAP");
MTX_LOCK(&spec->pr_rsv_mutex);
rc = istgt_lu_disk_get_reservation(spec);
MTX_UNLOCK(&spec->pr_rsv_mutex);
if (rc < 0) {
ISTGT_ERRLOG("istgt_lu_disk_get_reservation() failed errno %d\n", rc);
errorno = errno;
goto error_return;
}
}
MTX_LOCK(&spec->state_mutex);
spec->state = ISTGT_LUN_ONLINE;
spec->ex_state = ISTGT_LUN_OPEN;
MTX_UNLOCK(&spec->state_mutex);
ISTGT_LOG("Completed successfully post open for LU%d\n", lu->num);
error_return:
return errorno;
}
int
istgt_lu_disk_open(ISTGT_LU_Ptr lu, int i)
{
ISTGT_LU_DISK *spec;
uint64_t gb_size;
uint64_t mb_size;
int flags;
int rc;
uint32_t lbPerRecord = 0;
uint32_t old_rsize;
uint64_t old_size;
uint64_t old_blockcnt;
uint64_t old_blocklen;
uint32_t old_lb_per_rec, old_rshift;
uint16_t old_opt_tlen;
struct timespec _s1, _s2, _wrk, _wrkx;
int rpm;
if (lu->lun[i].type == ISTGT_LU_LUN_TYPE_NONE) {
ISTGT_TRACELOG(ISTGT_TRACE_DEBUG, "LU%d: LUN%d none\n",
lu->num, i);
lu->lun[i].spec = NULL;
return -1;
}
if (lu->lun[i].type != ISTGT_LU_LUN_TYPE_STORAGE) {
ISTGT_ERRLOG("LU%d: unsupported type\n", lu->num);
return -1;
}
spec = lu->lun[i].spec;
if (spec == NULL) {
ISTGT_NOTICELOG("LU%d: LUN%d spec is found\n", lu->num, i);
return -1;
}
_wrk.tv_sec = spec->open_started.tv_sec;
_wrk.tv_nsec = spec->open_started.tv_nsec;
timesdiff(clockid, _wrk, _wrkx, _s1)
old_rsize = spec->rsize;
old_size = spec->size;
old_blocklen = spec->blocklen;
old_blockcnt = spec->blockcnt;
old_lb_per_rec = spec->lb_per_rec;
old_rshift = spec->rshiftreal;
old_opt_tlen = spec->opt_tlen;
spec->luworkers = lu->luworkers;
spec->luworkersActive = lu->luworkersActive;
spec->file = lu->lun[i].u.storage.file;
spec->size = lu->lun[i].u.storage.size;
spec->rsize = lu->lun[i].u.storage.rsize;
spec->disktype = istgt_get_disktype_by_ext(spec->file);
spec->blocklen = 0;
spec->blockcnt = 0;
spec->lb_per_rec = 1;
spec->opt_tlen = (uint16_t)lu->lun[i].opt_tlen;
spec->rshift = (uint32_t)lu->rshift;
spec->rshiftreal = 0;
rpm = lu->lun[i].rotationrate;
if (strcasecmp(spec->disktype, "RAW") == 0) {
spec->blocklen = lu->blocklen;
if (spec->blocklen != 512 &&
spec->blocklen != 1024 &&
spec->blocklen != 2048 &&
spec->blocklen != 4096 &&
spec->blocklen != 8192 &&
spec->blocklen != 16384 &&
spec->blocklen != 32768 &&
spec->blocklen != 65536 &&
spec->blocklen != 131072 &&
spec->blocklen != 262144 &&
spec->blocklen != 524288) {
ISTGT_ERRLOG("LU%d: LUN%d: invalid blocklen %"PRIu64"\n",
lu->num, i, spec->blocklen);
goto error_return;
}
spec->blockcnt = spec->size / spec->blocklen;
if (spec->blockcnt == 0) {
ISTGT_ERRLOG("LU%d: LUN%d: size zero\n", lu->num, i);
goto error_return;
}
if (spec->rsize > spec->blocklen) {
lbPerRecord = spec->rsize / ((uint32_t)(spec->blocklen));
spec->lb_per_rec = lbPerRecord;
spec->rshiftreal = fls(lbPerRecord) - 1;
if (lbPerRecord & (lbPerRecord-1)) {
ISTGT_ERRLOG("LU%d: LUN%d: invalid blocklen:%lu zfsrecordSize:%u\n",
lu->num, i, spec->blocklen, spec->rsize);
}
}
if (spec->fd > -1){
MTX_LOCK(&spec->state_mutex);
spec->state = ISTGT_LUN_BUSY;
MTX_UNLOCK(&spec->state_mutex);
rc = spec->close(spec);
if (rc < 0) {
/* Ignore error */
ISTGT_ERRLOG("LU%d: LUN%d failed to close device\n", lu->num, i);
goto error_return;
} //else {
// MTX_LOCK(&spec->state_mutex);
// spec->ex_state = ISTGT_LUN_CLOSE;
// MTX_UNLOCK(&spec->state_mutex);
//}
}
spec->fd = -1;
lu->lun[i].u.storage.fd = -1;
lu->limit_q_size = 0;
flags = lu->readonly ? O_RDONLY : O_RDWR;
rc = spec->open(spec, flags, 0666);
timesdiff(clockid, _wrkx, _wrk, _s2)
if (rc < 0) {
ISTGT_ERRLOG("LU%d: LUN%d: open error(errno=%d/%d)[%s]\n",
lu->num, i, spec->fderr, spec->fderrno, spec->file);
flags = lu->readonly ? O_RDONLY : (O_CREAT | O_EXCL | O_RDWR);
rc = spec->open(spec, flags, 0666);
if (rc < 0) {
ISTGT_ERRLOG("LU%d: LUN%d: open error(errno=%d/%d)[%s]\n",
lu->num, i, spec->fderr, spec->fderrno, spec->file);
MTX_LOCK(&spec->state_mutex);
spec->state = ISTGT_LUN_BUSY;
spec->ex_state = ISTGT_LUN_NOTYET;
MTX_UNLOCK(&spec->state_mutex);
goto error_return;
}
}
timesdiff(clockid, _wrkx, _wrk, _s2)
MTX_LOCK(&spec->pr_rsv_mutex);
spec->rsv_pending |= ISTGT_RSV_READ;
MTX_UNLOCK(&spec->pr_rsv_mutex);
MTX_LOCK(&spec->state_mutex);
spec->state = ISTGT_LUN_BUSY;
spec->ex_state = ISTGT_LUN_OPEN;
MTX_UNLOCK(&spec->state_mutex);
gb_size = spec->size / ISTGT_LU_1GB;
mb_size = (spec->size % ISTGT_LU_1GB) / ISTGT_LU_1MB;
printf("LU%d: LUN%d %s: storage_onlinex %s [%s, %luGB.%luMB, %lu blks of %lu bytes, phy:%u/%u %s%s%s%s%s%s rpm:%d] q:%d thr:%d/%d [%ld.%ld, %ld.%ld]\n",
lu->num, i, lu->name ? lu->name : "-", lu->readonly ? "readonly " : "",
spec->file, gb_size, mb_size, spec->blockcnt, spec->blocklen, spec->rshift, spec->rshiftreal,
spec->readcache ? "" : "RCD", spec->writecache ? " WCE" : "",
spec->ats ? " ATS" : "", spec->unmap ? " UNMAP" : "",
spec->wsame ? " WSAME" : "", spec->dpofua ? " DPOFUA" : "",
rpm, spec->queue_depth, spec->luworkers, spec->luworkersActive,
_s1.tv_sec, _s1.tv_nsec, _s2.tv_sec, _s2.tv_nsec);
ISTGT_LOG("LU%d: LUN%d %s: storage_onlinex %s [%s, %luGB.%luMB, %lu blks of %lu bytes, phy:%u/%u %s%s%s%s%s%s rpm:%d] q:%d thr:%d/%d [%ld.%ld, %ld.%ld]\n",
lu->num, i, lu->name ? lu->name : "-", lu->readonly ? "readonly " : "",
spec->file, gb_size, mb_size, spec->blockcnt, spec->blocklen, spec->rshift, spec->rshiftreal,
spec->readcache ? "" : "RCD", spec->writecache ? " WCE" : "",
spec->ats ? " ATS" : "", spec->unmap ? " UNMAP" : "",
spec->wsame ? " WSAME" : "", spec->dpofua ? " DPOFUA" : "",
rpm, spec->queue_depth, spec->luworkers, spec->luworkersActive,
_s1.tv_sec, _s1.tv_nsec, _s2.tv_sec, _s2.tv_nsec);
} else {
ISTGT_ERRLOG("LU%d: LUN%d: unsupported format\n", lu->num, i);
goto error_return;
}
lu->lun[i].spec = spec;
return 0;
error_return:
spec->rsize = old_rsize;
spec->size = old_size;
spec->blockcnt = old_blockcnt;
spec->blocklen = old_blocklen;
spec->lb_per_rec = old_lb_per_rec;
spec->rshiftreal = old_rshift;
spec->opt_tlen = old_opt_tlen;
return -1;
}
static int
istgt_lu_disk_allocate_raw(ISTGT_LU_DISK *spec)
{
#ifdef REPLICATION
return 0;
#endif
uint8_t *data;
uint64_t fsize;
uint64_t size;
uint64_t blocklen;
uint64_t offset;
uint64_t nbytes;
int64_t rc;
size = spec->size;
blocklen = spec->blocklen;
nbytes = blocklen;
data = xmalloc(nbytes);
memset(data, 0, nbytes);
fsize = istgt_lu_get_filesize(spec->file);
if (fsize > size) { /* case when quota is reduced */
xfree(data);
return 0;
}
spec->fsize = fsize;
offset = size - nbytes;
rc = pread(spec->fd, data, nbytes, offset);
/* EOF is OK */
if (rc < 0) {
ISTGT_ERRLOG("lu_disk_read() failed:errno:%d\n", errno);
xfree(data);
return -1;
}
/* allocate complete size */
/*This can be avoided since thin provisioned volume of this size has already been created*/
/*
rc = pwrite(spec->fd, data, nbytes, offset);
if (rc < 0 || (uint64_t) rc != nbytes) {
ISTGT_ERRLOG("lu_disk_write() failed:errno:%d written:%ld\n", errno, rc);
xfree(data);
return -1;
}
*/
spec->foffset = size;
xfree(data);
return 0;
}
static int
istgt_lu_disk_setcache_raw(ISTGT_LU_DISK *spec)
{
#ifdef REPLICATION
return 0;
#endif
int flags;
int rc;
int fd;
ISTGT_TRACELOG(ISTGT_TRACE_DEBUG, "istgt_lu_disk_setcache\n");
fd = spec->fd;
if (spec->readcache) {
/* not implement */
} else {
/* not implement */
}
flags = fcntl(fd , F_GETFL, 0);
if (flags != -1) {
if (spec->writecache) {
ISTGT_TRACELOG(ISTGT_TRACE_SCSI, "write cache enable\n");
rc = fcntl(fd, F_SETFL, (flags & ~O_FSYNC));
spec->writecache = 1;
} else {
ISTGT_TRACELOG(ISTGT_TRACE_SCSI, "write cache disable\n");
rc = fcntl(fd, F_SETFL, (flags | O_FSYNC));
spec->writecache = 0;
}
if (rc == -1) {
#if 0
ISTGT_ERRLOG("LU%d: LUN%d: fcntl(F_SETFL) failed(errno=%d)\n",
spec->num, spec->lun, errno);
#endif
}
} else {
ISTGT_ERRLOG("LU%d: LUN%d: fcntl(F_GETFL) failed(errno=%d)\n",
spec->num, spec->lun, errno);
}
return 0;
}
static const char *
istgt_get_disktype_by_ext(const char *file)
{
size_t n;
if (file == NULL || file[0] == '\n')
return "RAW";
n = strlen(file);
if (n > 4 && strcasecmp(file + (n - 4), ".vdi") == 0)
return "VDI";
if (n > 4 && strcasecmp(file + (n - 4), ".vhd") == 0)
return "VHD";
if (n > 5 && strcasecmp(file + (n - 5), ".vmdk") == 0)
return "VMDK";
if (n > 5 && strcasecmp(file + (n - 5), ".qcow") == 0)
return "QCOW";
if (n > 6 && strcasecmp(file + (n - 6), ".qcow2") == 0)
return "QCOW";
if (n > 4 && strcasecmp(file + (n - 4), ".qed") == 0)
return "QED";
if (n > 5 && strcasecmp(file + (n - 5), ".vhdx") == 0)
return "VHDX";
return "RAW";
}
int
istgt_lu_disk_init(ISTGT_Ptr istgt __attribute__((__unused__)), ISTGT_LU_Ptr lu)
{
ISTGT_LU_DISK *spec;
IT_NEXUS *nexus;
uint64_t gb_size;
uint64_t mb_size;
#ifdef HAVE_UUID_H
uint32_t status;
#endif /* HAVE_UUID_H */
int flags, rpm;
int rc;
int i, j, k;
uint32_t lbPerRecord = 0;
printf("LU%d HDD UNIT\n", lu->num);
ISTGT_NOTICELOG("lu_disk_init LU%d TargetName=%s",
lu->num, lu->name);
for (i = 0; i < lu->maxlun; i++) {
if (lu->lun[i].type == ISTGT_LU_LUN_TYPE_NONE) {
ISTGT_TRACELOG(ISTGT_TRACE_DEBUG, "LU%d: LUN%d none\n",
lu->num, i);
lu->lun[i].spec = NULL;
continue;
}
if (lu->lun[i].type != ISTGT_LU_LUN_TYPE_STORAGE) {
ISTGT_ERRLOG("LU%d: unsupported type\n", lu->num);
return -1;
}
ISTGT_TRACELOG(ISTGT_TRACE_DEBUG, "LU%d: LUN%d storage\n",
lu->num, i);
spec = xmalloc(sizeof *spec);
memset(spec, 0, sizeof *spec);
spec->lu = lu;
#ifdef REPLICATION
spec->volname = xstrdup(spec->lu->volname);
#endif
spec->num = lu->num;
spec->lun = i;
spec->do_avg = 0;
spec->inflight = 0;
spec->fd = -1;
spec->ludsk_ref = 0;
#ifdef REPLICATION
spec->quiesce = 0;
#endif
spec->max_unmap_sectors = 4096;
spec->persist = is_persist_enabled();
spec->luworkers = lu->luworkers;
spec->luworkersActive = lu->luworkersActive;
spec->readcache = spec->lu->lun[i].readcache;
spec->writecache = spec->lu->lun[i].writecache;
spec->unmap = spec->lu->lun[i].unmap;
spec->wzero = spec->lu->lun[i].wzero;
spec->ats = spec->lu->lun[i].ats;
spec->xcopy = spec->lu->lun[i].xcopy;
spec->wsame = spec->lu->lun[i].wsame;
spec->dpofua = spec->lu->lun[i].dpofua;
rpm = spec->lu->lun[i].rotationrate;
spec->watsbuf = NULL;
spec->queue_depth = lu->queue_depth;
spec->disk_modify_work_pending = 0;
rc = pthread_cond_init(&spec->cmd_queue_cond, NULL);
if (rc != 0) {
ISTGT_ERRLOG("LU%d: cond_init() failed errno:%d\n", lu->num, errno);
return -1;
}
istgt_queue_init(&spec->cmd_queue);
rc = pthread_cond_init(&spec->maint_cmd_queue_cond, NULL);
if (rc != 0) {
ISTGT_ERRLOG("LU%d: maint_cond_init() failed errno:%d\n", lu->num, errno);
return -1;
}
istgt_queue_init(&spec->maint_cmd_queue);
istgt_queue_init(&spec->maint_blocked_queue);