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Merge remote-tracking branch 'remotes/cody/tags/block-pull-request' into staging

# gpg: Signature made Tue 21 Feb 2017 15:40:05 GMT
# gpg:                using RSA key 0xBDBE7B27C0DE3057
# gpg: Good signature from "Jeffrey Cody <jcody@redhat.com>"
# gpg:                 aka "Jeffrey Cody <jeff@codyprime.org>"
# gpg:                 aka "Jeffrey Cody <codyprime@gmail.com>"
# Primary key fingerprint: 9957 4B4D 3474 90E7 9D98  D624 BDBE 7B27 C0DE 3057

* remotes/cody/tags/block-pull-request:
  qemu-options: Fix broken sheepdog URL
  mirror: do not increase offset during initial zero_or_discard phase
  QAPI: Fix blockdev-add example documentation
  iscsi: Add blockdev-add support
  iscsi: Add timeout option
  iscsi: Add header-digest option
  iscsi: Add initiator-name option
  iscsi: Handle -iscsi user/password in bdrv_parse_filename()
  iscsi: Split URL into individual options

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2017-02-21 15:48:22 +00:00
commit 796b288f7b
4 changed files with 317 additions and 172 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

353
block/iscsi.c
View File

@ -1245,29 +1245,14 @@ retry:
return 0;
}
static void parse_chap(struct iscsi_context *iscsi, const char *target,
static void apply_chap(struct iscsi_context *iscsi, QemuOpts *opts,
Error **errp)
{
QemuOptsList *list;
QemuOpts *opts;
const char *user = NULL;
const char *password = NULL;
const char *secretid;
char *secret = NULL;
list = qemu_find_opts("iscsi");
if (!list) {
return;
}
opts = qemu_opts_find(list, target);
if (opts == NULL) {
opts = QTAILQ_FIRST(&list->head);
if (!opts) {
return;
}
}
user = qemu_opt_get(opts, "user");
if (!user) {
return;
@ -1298,64 +1283,36 @@ static void parse_chap(struct iscsi_context *iscsi, const char *target,
g_free(secret);
}
static void parse_header_digest(struct iscsi_context *iscsi, const char *target,
static void apply_header_digest(struct iscsi_context *iscsi, QemuOpts *opts,
Error **errp)
{
QemuOptsList *list;
QemuOpts *opts;
const char *digest = NULL;
list = qemu_find_opts("iscsi");
if (!list) {
return;
}
opts = qemu_opts_find(list, target);
if (opts == NULL) {
opts = QTAILQ_FIRST(&list->head);
if (!opts) {
return;
}
}
digest = qemu_opt_get(opts, "header-digest");
if (!digest) {
return;
}
if (!strcmp(digest, "CRC32C")) {
iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE_CRC32C);
} else if (!strcmp(digest, "crc32c")) {
iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_CRC32C);
} else if (!strcmp(digest, "NONE")) {
} else if (!strcmp(digest, "none")) {
iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE);
} else if (!strcmp(digest, "CRC32C-NONE")) {
} else if (!strcmp(digest, "crc32c-none")) {
iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_CRC32C_NONE);
} else if (!strcmp(digest, "NONE-CRC32C")) {
} else if (!strcmp(digest, "none-crc32c")) {
iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE_CRC32C);
} else {
error_setg(errp, "Invalid header-digest setting : %s", digest);
}
}
static char *parse_initiator_name(const char *target)
static char *get_initiator_name(QemuOpts *opts)
{
QemuOptsList *list;
QemuOpts *opts;
const char *name;
char *iscsi_name;
UuidInfo *uuid_info;
list = qemu_find_opts("iscsi");
if (list) {
opts = qemu_opts_find(list, target);
if (!opts) {
opts = QTAILQ_FIRST(&list->head);
}
if (opts) {
name = qemu_opt_get(opts, "initiator-name");
if (name) {
return g_strdup(name);
}
}
name = qemu_opt_get(opts, "initiator-name");
if (name) {
return g_strdup(name);
}
uuid_info = qmp_query_uuid(NULL);
@ -1370,29 +1327,6 @@ static char *parse_initiator_name(const char *target)
return iscsi_name;
}
static int parse_timeout(const char *target)
{
QemuOptsList *list;
QemuOpts *opts;
const char *timeout;
list = qemu_find_opts("iscsi");
if (list) {
opts = qemu_opts_find(list, target);
if (!opts) {
opts = QTAILQ_FIRST(&list->head);
}
if (opts) {
timeout = qemu_opt_get(opts, "timeout");
if (timeout) {
return atoi(timeout);
}
}
}
return 0;
}
static void iscsi_nop_timed_event(void *opaque)
{
IscsiLun *iscsilun = opaque;
@ -1483,20 +1417,6 @@ static void iscsi_readcapacity_sync(IscsiLun *iscsilun, Error **errp)
}
}
/* TODO Convert to fine grained options */
static QemuOptsList runtime_opts = {
.name = "iscsi",
.head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
.desc = {
{
.name = "filename",
.type = QEMU_OPT_STRING,
.help = "URL to the iscsi image",
},
{ /* end of list */ }
},
};
static struct scsi_task *iscsi_do_inquiry(struct iscsi_context *iscsi, int lun,
int evpd, int pc, void **inq, Error **errp)
{
@ -1614,24 +1534,178 @@ out:
}
}
static void iscsi_parse_iscsi_option(const char *target, QDict *options)
{
QemuOptsList *list;
QemuOpts *opts;
const char *user, *password, *password_secret, *initiator_name,
*header_digest, *timeout;
list = qemu_find_opts("iscsi");
if (!list) {
return;
}
opts = qemu_opts_find(list, target);
if (opts == NULL) {
opts = QTAILQ_FIRST(&list->head);
if (!opts) {
return;
}
}
user = qemu_opt_get(opts, "user");
if (user) {
qdict_set_default_str(options, "user", user);
}
password = qemu_opt_get(opts, "password");
if (password) {
qdict_set_default_str(options, "password", password);
}
password_secret = qemu_opt_get(opts, "password-secret");
if (password_secret) {
qdict_set_default_str(options, "password-secret", password_secret);
}
initiator_name = qemu_opt_get(opts, "initiator-name");
if (initiator_name) {
qdict_set_default_str(options, "initiator-name", initiator_name);
}
header_digest = qemu_opt_get(opts, "header-digest");
if (header_digest) {
/* -iscsi takes upper case values, but QAPI only supports lower case
* enum constant names, so we have to convert here. */
char *qapi_value = g_ascii_strdown(header_digest, -1);
qdict_set_default_str(options, "header-digest", qapi_value);
g_free(qapi_value);
}
timeout = qemu_opt_get(opts, "timeout");
if (timeout) {
qdict_set_default_str(options, "timeout", timeout);
}
}
/*
* We support iscsi url's on the form
* iscsi://[<username>%<password>@]<host>[:<port>]/<targetname>/<lun>
*/
static void iscsi_parse_filename(const char *filename, QDict *options,
Error **errp)
{
struct iscsi_url *iscsi_url;
const char *transport_name;
char *lun_str;
iscsi_url = iscsi_parse_full_url(NULL, filename);
if (iscsi_url == NULL) {
error_setg(errp, "Failed to parse URL : %s", filename);
return;
}
#if LIBISCSI_API_VERSION >= (20160603)
switch (iscsi_url->transport) {
case TCP_TRANSPORT:
transport_name = "tcp";
break;
case ISER_TRANSPORT:
transport_name = "iser";
break;
default:
error_setg(errp, "Unknown transport type (%d)",
iscsi_url->transport);
return;
}
#else
transport_name = "tcp";
#endif
qdict_set_default_str(options, "transport", transport_name);
qdict_set_default_str(options, "portal", iscsi_url->portal);
qdict_set_default_str(options, "target", iscsi_url->target);
lun_str = g_strdup_printf("%d", iscsi_url->lun);
qdict_set_default_str(options, "lun", lun_str);
g_free(lun_str);
/* User/password from -iscsi take precedence over those from the URL */
iscsi_parse_iscsi_option(iscsi_url->target, options);
if (iscsi_url->user[0] != '\0') {
qdict_set_default_str(options, "user", iscsi_url->user);
qdict_set_default_str(options, "password", iscsi_url->passwd);
}
iscsi_destroy_url(iscsi_url);
}
static QemuOptsList runtime_opts = {
.name = "iscsi",
.head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
.desc = {
{
.name = "transport",
.type = QEMU_OPT_STRING,
},
{
.name = "portal",
.type = QEMU_OPT_STRING,
},
{
.name = "target",
.type = QEMU_OPT_STRING,
},
{
.name = "user",
.type = QEMU_OPT_STRING,
},
{
.name = "password",
.type = QEMU_OPT_STRING,
},
{
.name = "password-secret",
.type = QEMU_OPT_STRING,
},
{
.name = "lun",
.type = QEMU_OPT_NUMBER,
},
{
.name = "initiator-name",
.type = QEMU_OPT_STRING,
},
{
.name = "header-digest",
.type = QEMU_OPT_STRING,
},
{
.name = "timeout",
.type = QEMU_OPT_NUMBER,
},
{ /* end of list */ }
},
};
static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
Error **errp)
{
IscsiLun *iscsilun = bs->opaque;
struct iscsi_context *iscsi = NULL;
struct iscsi_url *iscsi_url = NULL;
struct scsi_task *task = NULL;
struct scsi_inquiry_standard *inq = NULL;
struct scsi_inquiry_supported_pages *inq_vpd;
char *initiator_name = NULL;
QemuOpts *opts;
Error *local_err = NULL;
const char *filename;
int i, ret = 0, timeout = 0;
const char *transport_name, *portal, *target;
#if LIBISCSI_API_VERSION >= (20160603)
enum iscsi_transport_type transport;
#endif
int i, ret = 0, timeout = 0, lun;
opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
qemu_opts_absorb_qdict(opts, options, &local_err);
@ -1641,18 +1715,34 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
goto out;
}
filename = qemu_opt_get(opts, "filename");
transport_name = qemu_opt_get(opts, "transport");
portal = qemu_opt_get(opts, "portal");
target = qemu_opt_get(opts, "target");
lun = qemu_opt_get_number(opts, "lun", 0);
iscsi_url = iscsi_parse_full_url(iscsi, filename);
if (iscsi_url == NULL) {
error_setg(errp, "Failed to parse URL : %s", filename);
if (!transport_name || !portal || !target) {
error_setg(errp, "Need all of transport, portal and target options");
ret = -EINVAL;
goto out;
}
if (!strcmp(transport_name, "tcp")) {
#if LIBISCSI_API_VERSION >= (20160603)
transport = TCP_TRANSPORT;
} else if (!strcmp(transport_name, "iser")) {
transport = ISER_TRANSPORT;
#else
/* TCP is what older libiscsi versions always use */
#endif
} else {
error_setg(errp, "Unknown transport: %s", transport_name);
ret = -EINVAL;
goto out;
}
memset(iscsilun, 0, sizeof(IscsiLun));
initiator_name = parse_initiator_name(iscsi_url->target);
initiator_name = get_initiator_name(opts);
iscsi = iscsi_create_context(initiator_name);
if (iscsi == NULL) {
@ -1661,30 +1751,20 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
goto out;
}
#if LIBISCSI_API_VERSION >= (20160603)
if (iscsi_init_transport(iscsi, iscsi_url->transport)) {
if (iscsi_init_transport(iscsi, transport)) {
error_setg(errp, ("Error initializing transport."));
ret = -EINVAL;
goto out;
}
#endif
if (iscsi_set_targetname(iscsi, iscsi_url->target)) {
if (iscsi_set_targetname(iscsi, target)) {
error_setg(errp, "iSCSI: Failed to set target name.");
ret = -EINVAL;
goto out;
}
if (iscsi_url->user[0] != '\0') {
ret = iscsi_set_initiator_username_pwd(iscsi, iscsi_url->user,
iscsi_url->passwd);
if (ret != 0) {
error_setg(errp, "Failed to set initiator username and password");
ret = -EINVAL;
goto out;
}
}
/* check if we got CHAP username/password via the options */
parse_chap(iscsi, iscsi_url->target, &local_err);
apply_chap(iscsi, opts, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
ret = -EINVAL;
@ -1697,10 +1777,8 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
goto out;
}
iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE_CRC32C);
/* check if we got HEADER_DIGEST via the options */
parse_header_digest(iscsi, iscsi_url->target, &local_err);
apply_header_digest(iscsi, opts, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
ret = -EINVAL;
@ -1708,7 +1786,7 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
}
/* timeout handling is broken in libiscsi before 1.15.0 */
timeout = parse_timeout(iscsi_url->target);
timeout = qemu_opt_get_number(opts, "timeout", 0);
#if LIBISCSI_API_VERSION >= 20150621
iscsi_set_timeout(iscsi, timeout);
#else
@ -1717,7 +1795,7 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
}
#endif
if (iscsi_full_connect_sync(iscsi, iscsi_url->portal, iscsi_url->lun) != 0) {
if (iscsi_full_connect_sync(iscsi, portal, lun) != 0) {
error_setg(errp, "iSCSI: Failed to connect to LUN : %s",
iscsi_get_error(iscsi));
ret = -EINVAL;
@ -1726,7 +1804,7 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
iscsilun->iscsi = iscsi;
iscsilun->aio_context = bdrv_get_aio_context(bs);
iscsilun->lun = iscsi_url->lun;
iscsilun->lun = lun;
iscsilun->has_write_same = true;
task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 0, 0,
@ -1829,9 +1907,6 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
out:
qemu_opts_del(opts);
g_free(initiator_name);
if (iscsi_url != NULL) {
iscsi_destroy_url(iscsi_url);
}
if (task != NULL) {
scsi_free_scsi_task(task);
}
@ -2040,15 +2115,15 @@ static BlockDriver bdrv_iscsi = {
.format_name = "iscsi",
.protocol_name = "iscsi",
.instance_size = sizeof(IscsiLun),
.bdrv_needs_filename = true,
.bdrv_file_open = iscsi_open,
.bdrv_close = iscsi_close,
.bdrv_create = iscsi_create,
.create_opts = &iscsi_create_opts,
.bdrv_reopen_prepare = iscsi_reopen_prepare,
.bdrv_reopen_commit = iscsi_reopen_commit,
.bdrv_invalidate_cache = iscsi_invalidate_cache,
.instance_size = sizeof(IscsiLun),
.bdrv_parse_filename = iscsi_parse_filename,
.bdrv_file_open = iscsi_open,
.bdrv_close = iscsi_close,
.bdrv_create = iscsi_create,
.create_opts = &iscsi_create_opts,
.bdrv_reopen_prepare = iscsi_reopen_prepare,
.bdrv_reopen_commit = iscsi_reopen_commit,
.bdrv_invalidate_cache = iscsi_invalidate_cache,
.bdrv_getlength = iscsi_getlength,
.bdrv_get_info = iscsi_get_info,
@ -2075,15 +2150,15 @@ static BlockDriver bdrv_iser = {
.format_name = "iser",
.protocol_name = "iser",
.instance_size = sizeof(IscsiLun),
.bdrv_needs_filename = true,
.bdrv_file_open = iscsi_open,
.bdrv_close = iscsi_close,
.bdrv_create = iscsi_create,
.create_opts = &iscsi_create_opts,
.bdrv_reopen_prepare = iscsi_reopen_prepare,
.bdrv_reopen_commit = iscsi_reopen_commit,
.bdrv_invalidate_cache = iscsi_invalidate_cache,
.instance_size = sizeof(IscsiLun),
.bdrv_parse_filename = iscsi_parse_filename,
.bdrv_file_open = iscsi_open,
.bdrv_close = iscsi_close,
.bdrv_create = iscsi_create,
.create_opts = &iscsi_create_opts,
.bdrv_reopen_prepare = iscsi_reopen_prepare,
.bdrv_reopen_commit = iscsi_reopen_commit,
.bdrv_invalidate_cache = iscsi_invalidate_cache,
.bdrv_getlength = iscsi_getlength,
.bdrv_get_info = iscsi_get_info,

9
block/mirror.c
View File

@ -69,6 +69,7 @@ typedef struct MirrorBlockJob {
bool waiting_for_io;
int target_cluster_sectors;
int max_iov;
bool initial_zeroing_ongoing;
} MirrorBlockJob;
typedef struct MirrorOp {
@ -117,9 +118,10 @@ static void mirror_iteration_done(MirrorOp *op, int ret)
if (s->cow_bitmap) {
bitmap_set(s->cow_bitmap, chunk_num, nb_chunks);
}
s->common.offset += (uint64_t)op->nb_sectors * BDRV_SECTOR_SIZE;
if (!s->initial_zeroing_ongoing) {
s->common.offset += (uint64_t)op->nb_sectors * BDRV_SECTOR_SIZE;
}
}
qemu_iovec_destroy(&op->qiov);
g_free(op);
@ -572,6 +574,7 @@ static int coroutine_fn mirror_dirty_init(MirrorBlockJob *s)
return 0;
}
s->initial_zeroing_ongoing = true;
for (sector_num = 0; sector_num < end; ) {
int nb_sectors = MIN(end - sector_num,
QEMU_ALIGN_DOWN(INT_MAX, s->granularity) >> BDRV_SECTOR_BITS);
@ -579,6 +582,7 @@ static int coroutine_fn mirror_dirty_init(MirrorBlockJob *s)
mirror_throttle(s);
if (block_job_is_cancelled(&s->common)) {
s->initial_zeroing_ongoing = false;
return 0;
}
@ -593,6 +597,7 @@ static int coroutine_fn mirror_dirty_init(MirrorBlockJob *s)
}
mirror_wait_for_all_io(s);
s->initial_zeroing_ongoing = false;
}
/* First part, loop on the sectors and initialize the dirty bitmap. */

125
qapi/block-core.json
View File

@ -2110,16 +2110,17 @@
# @nfs: Since 2.8
# @replication: Since 2.8
# @ssh: Since 2.8
# @iscsi: Since 2.9
#
# Since: 2.0
##
{ 'enum': 'BlockdevDriver',
'data': [ 'archipelago', 'blkdebug', 'blkverify', 'bochs', 'cloop',
'dmg', 'file', 'ftp', 'ftps', 'gluster', 'host_cdrom',
'host_device', 'http', 'https', 'luks', 'nbd', 'nfs', 'null-aio',
'null-co', 'parallels', 'qcow', 'qcow2', 'qed', 'quorum', 'raw',
'replication', 'ssh', 'vdi', 'vhdx', 'vmdk', 'vpc',
'vvfat' ] }
'host_device', 'http', 'https', 'iscsi', 'luks', 'nbd', 'nfs',
'null-aio', 'null-co', 'parallels', 'qcow', 'qcow2', 'qed',
'quorum', 'raw', 'replication', 'ssh', 'vdi', 'vhdx', 'vmdk',
'vpc', 'vvfat' ] }
##
# @BlockdevOptionsFile:
@ -2600,6 +2601,70 @@
'*debug': 'int',
'*logfile': 'str' } }
##
# @IscsiTransport:
#
# An enumeration of libiscsi transport types
#
# Since: 2.9
##
{ 'enum': 'IscsiTransport',
'data': [ 'tcp', 'iser' ] }
##
# @IscsiHeaderDigest:
#
# An enumeration of header digests supported by libiscsi
#
# Since: 2.9
##
{ 'enum': 'IscsiHeaderDigest',
'prefix': 'QAPI_ISCSI_HEADER_DIGEST',
'data': [ 'crc32c', 'none', 'crc32c-none', 'none-crc32c' ] }
##
# @BlockdevOptionsIscsi:
#
# @transport The iscsi transport type
#
# @portal The address of the iscsi portal
#
# @target The target iqn name
#
# @lun #optional LUN to connect to. Defaults to 0.
#
# @user #optional User name to log in with. If omitted, no CHAP
# authentication is performed.
#
# @password-secret #optional The ID of a QCryptoSecret object providing
# the password for the login. This option is required if
# @user is specified.
#
# @initiator-name #optional The iqn name we want to identify to the target
# as. If this option is not specified, an initiator name is
# generated automatically.
#
# @header-digest #optional The desired header digest. Defaults to
# none-crc32c.
#
# @timeout #optional Timeout in seconds after which a request will
# timeout. 0 means no timeout and is the default.
#
# Driver specific block device options for iscsi
#
# Since: 2.9
##
{ 'struct': 'BlockdevOptionsIscsi',
'data': { 'transport': 'IscsiTransport',
'portal': 'str',
'target': 'str',
'*lun': 'int',
'*user': 'str',
'*password-secret': 'str',
'*initiator-name': 'str',
'*header-digest': 'IscsiHeaderDigest',
'*timeout': 'int' } }
##
# @ReplicationMode:
#
@ -2786,7 +2851,7 @@
'host_device':'BlockdevOptionsFile',
'http': 'BlockdevOptionsCurl',
'https': 'BlockdevOptionsCurl',
# TODO iscsi: Wait for structured options
'iscsi': 'BlockdevOptionsIscsi',
'luks': 'BlockdevOptionsLUKS',
'nbd': 'BlockdevOptionsNbd',
'nfs': 'BlockdevOptionsNfs',
@ -2845,34 +2910,36 @@
# 1.
# -> { "execute": "blockdev-add",
# "arguments": {
# "options" : { "driver": "qcow2",
# "file": { "driver": "file",
# "filename": "test.qcow2" } } } }
# "driver": "qcow2",
# "node-name": "test1",
# "file": {
# "driver": "file",
# "filename": "test.qcow2"
# }
# }
# }
# <- { "return": {} }
#
# 2.
# -> { "execute": "blockdev-add",
# "arguments": {
# "options": {
# "driver": "qcow2",
# "node-name": "node0",
# "discard": "unmap",
# "cache": {
# "direct": true,
# "writeback": true
# "driver": "qcow2",
# "node-name": "node0",
# "discard": "unmap",
# "cache": {
# "direct": true
# },
# "file": {
# "driver": "file",
# "filename": "/tmp/test.qcow2"
# "driver": "file",
# "filename": "/tmp/test.qcow2"
# },
# "backing": {
# "driver": "raw",
# "file": {
# "driver": "file",
# "filename": "/dev/fdset/4"
# "driver": "raw",
# "file": {
# "driver": "file",
# "filename": "/dev/fdset/4"
# }
# }
# }
# }
# }
#
@ -2900,14 +2967,12 @@
#
# -> { "execute": "blockdev-add",
# "arguments": {
# "options": {
# "driver": "qcow2",
# "node-name": "node0",
# "file": {
# "driver": "file",
# "filename": "test.qcow2"
# }
# }
# "driver": "qcow2",
# "node-name": "node0",
# "file": {
# "driver": "file",
# "filename": "test.qcow2"
# }
# }
# }
# <- { "return": {} }

2
qemu-options.hx
View File

@ -2586,7 +2586,7 @@ Example
qemu-system-i386 --drive file=sheepdog://192.0.2.1:30000/MyVirtualMachine
@end example
See also @url{http://http://www.osrg.net/sheepdog/}.
See also @url{https://sheepdog.github.io/sheepdog/}.
@item GlusterFS
GlusterFS is a user space distributed file system.