block: Drop the sheepdog block driver

It was deprecated in commit e1c4269763, v5.2.0.  See that commit
message for rationale.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20210501075747.3293186-1-armbru@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>

.gitlab-ci.yml

@@ -342,7 +342,6 @@ build-disabled:
       --disable-replication
       --disable-sdl
       --disable-seccomp
-      --disable-sheepdog
       --disable-slirp
       --disable-smartcard
       --disable-snappy

MAINTAINERS

@@ -3072,12 +3072,6 @@ L: qemu-block@nongnu.org
 S: Supported
 F: block/rbd.c
 
-Sheepdog
-M: Liu Yuan <namei.unix@gmail.com>
-L: qemu-block@nongnu.org
-S: Odd Fixes
-F: block/sheepdog.c
-
 VHDX
 M: Jeff Cody <codyprime@gmail.com>
 L: qemu-block@nongnu.org

block/meson.build

@@ -64,7 +64,6 @@ block_ss.add(when: 'CONFIG_POSIX', if_true: [files('file-posix.c'), coref, iokit
 block_ss.add(when: libiscsi, if_true: files('iscsi-opts.c'))
 block_ss.add(when: 'CONFIG_LINUX', if_true: files('nvme.c'))
 block_ss.add(when: 'CONFIG_REPLICATION', if_true: files('replication.c'))
-block_ss.add(when: 'CONFIG_SHEEPDOG', if_true: files('sheepdog.c'))
 block_ss.add(when: ['CONFIG_LINUX_AIO', libaio], if_true: files('linux-aio.c'))
 block_ss.add(when: ['CONFIG_LINUX_IO_URING', linux_io_uring], if_true: files('io_uring.c'))
 

block/trace-events

@@ -207,19 +207,5 @@ file_FindEjectableOpticalMedia(const char *media) "Matching using %s"
 file_setup_cdrom(const char *partition) "Using %s as optical disc"
 file_hdev_is_sg(int type, int version) "SG device found: type=%d, version=%d"
 
-# sheepdog.c
-sheepdog_reconnect_to_sdog(void) "Wait for connection to be established"
-sheepdog_aio_read_response(void) "disable cache since the server doesn't support it"
-sheepdog_open(uint32_t vid) "0x%" PRIx32 " snapshot inode was open"
-sheepdog_close(const char *name) "%s"
-sheepdog_create_branch_snapshot(uint32_t vdi) "0x%" PRIx32 " is snapshot"
-sheepdog_create_branch_created(uint32_t vdi) "0x%" PRIx32 " is created"
-sheepdog_create_branch_new(uint32_t vdi) "0x%" PRIx32 " was newly created"
-sheepdog_co_rw_vector_update(uint32_t vdi, uint64_t oid, uint64_t data, long idx) "update ino (%" PRIu32 ") %" PRIu64 " %" PRIu64 " %ld"
-sheepdog_co_rw_vector_new(uint64_t oid) "new oid 0x%" PRIx64
-sheepdog_snapshot_create_info(const char *sn_name, const char *id, const char *name, int64_t size, int is_snapshot) "sn_info: name %s id_str %s s: name %s vm_state_size %" PRId64 " " "is_snapshot %d"
-sheepdog_snapshot_create(const char *sn_name, const char *id) "%s %s"
-sheepdog_snapshot_create_inode(const char *name, uint32_t snap, uint32_t vdi) "s->inode: name %s snap_id 0x%" PRIx32 " vdi 0x%" PRIx32
-
 # ssh.c
 sftp_error(const char *op, const char *ssh_err, int ssh_err_code, int sftp_err_code) "%s failed: %s (libssh error code: %d, sftp error code: %d)"

configure

@@ -447,7 +447,6 @@ vdi=${default_feature:-yes}
 vvfat=${default_feature:-yes}
 qed=${default_feature:-yes}
 parallels=${default_feature:-yes}
-sheepdog="no"
 libxml2="$default_feature"
 debug_mutex="no"
 libpmem="$default_feature"
@@ -1478,10 +1477,6 @@ for opt do
   ;;
   --enable-parallels) parallels="yes"
   ;;
-  --disable-sheepdog) sheepdog="no"
-  ;;
-  --enable-sheepdog) sheepdog="yes"
-  ;;
   --disable-vhost-user) vhost_user="no"
   ;;
   --enable-vhost-user) vhost_user="yes"
@@ -1916,7 +1911,6 @@ disabled with --disable-FEATURE, default is enabled if available
   vvfat           vvfat image format support
   qed             qed image format support
   parallels       parallels image format support
-  sheepdog        sheepdog block driver support (deprecated)
   crypto-afalg    Linux AF_ALG crypto backend driver
   capstone        capstone disassembler support
   debug-mutex     mutex debugging support
@@ -6106,10 +6100,6 @@ fi
 if test "$parallels" = "yes" ; then
   echo "CONFIG_PARALLELS=y" >> $config_host_mak
 fi
-if test "$sheepdog" = "yes" ; then
-  add_to deprecated_features "sheepdog"
-  echo "CONFIG_SHEEPDOG=y" >> $config_host_mak
-fi
 if test "$have_mlockall" = "yes" ; then
   echo "HAVE_MLOCKALL=y" >> $config_host_mak
 fi

docs/system/deprecated.rst

@@ -285,15 +285,6 @@ The above, converted to the current supported format::
 
   json:{"file.driver":"rbd", "file.pool":"rbd", "file.image":"name"}
 
-``sheepdog`` driver (since 5.2.0)
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-The ``sheepdog`` block device driver is deprecated. The corresponding upstream
-server project is no longer actively maintained. Users are recommended to switch
-to an alternative distributed block device driver such as RBD. The
-``qemu-img convert`` command can be used to liberate existing data by moving
-it out of sheepdog volumes into an alternative storage backend.
-
 linux-user mode CPUs
 --------------------
 

docs/system/device-url-syntax.rst.inc

@@ -85,24 +85,6 @@ These are specified using a special URL syntax.
    Currently authentication must be done using ssh-agent. Other
    authentication methods may be supported in future.
 
-``Sheepdog``
-   Sheepdog is a distributed storage system for QEMU. QEMU supports
-   using either local sheepdog devices or remote networked devices.
-
-   Syntax for specifying a sheepdog device
-
-   ::
-
-      sheepdog[+tcp|+unix]://[host:port]/vdiname[?socket=path][#snapid|#tag]
-
-   Example
-
-   .. parsed-literal::
-
-      |qemu_system| --drive file=sheepdog://192.0.2.1:30000/MyVirtualMachine
-
-   See also https://sheepdog.github.io/sheepdog/.
-
 ``GlusterFS``
    GlusterFS is a user space distributed file system. QEMU supports the
    use of GlusterFS volumes for hosting VM disk images using TCP, Unix

docs/system/qemu-block-drivers.rst.inc

@@ -547,75 +547,6 @@ also available.  Here are some example of the older syntax:
   |qemu_system| linux2.img -hdb nbd:unix:/tmp/my_socket
   |qemu_system| -cdrom nbd:localhost:10809:exportname=debian-500-ppc-netinst
 
-
-
-Sheepdog disk images
-~~~~~~~~~~~~~~~~~~~~
-
-Sheepdog is a distributed storage system for QEMU.  It provides highly
-available block level storage volumes that can be attached to
-QEMU-based virtual machines.
-
-You can create a Sheepdog disk image with the command:
-
-.. parsed-literal::
-
-  qemu-img create sheepdog:///IMAGE SIZE
-
-where *IMAGE* is the Sheepdog image name and *SIZE* is its
-size.
-
-To import the existing *FILENAME* to Sheepdog, you can use a
-convert command.
-
-.. parsed-literal::
-
-  qemu-img convert FILENAME sheepdog:///IMAGE
-
-You can boot from the Sheepdog disk image with the command:
-
-.. parsed-literal::
-
-  |qemu_system| sheepdog:///IMAGE
-
-You can also create a snapshot of the Sheepdog image like qcow2.
-
-.. parsed-literal::
-
-  qemu-img snapshot -c TAG sheepdog:///IMAGE
-
-where *TAG* is a tag name of the newly created snapshot.
-
-To boot from the Sheepdog snapshot, specify the tag name of the
-snapshot.
-
-.. parsed-literal::
-
-  |qemu_system| sheepdog:///IMAGE#TAG
-
-You can create a cloned image from the existing snapshot.
-
-.. parsed-literal::
-
-  qemu-img create -b sheepdog:///BASE#TAG sheepdog:///IMAGE
-
-where *BASE* is an image name of the source snapshot and *TAG*
-is its tag name.
-
-You can use an unix socket instead of an inet socket:
-
-.. parsed-literal::
-
-  |qemu_system| sheepdog+unix:///IMAGE?socket=PATH
-
-If the Sheepdog daemon doesn't run on the local host, you need to
-specify one of the Sheepdog servers to connect to.
-
-.. parsed-literal::
-
-  qemu-img create sheepdog://HOSTNAME:PORT/IMAGE SIZE
-  |qemu_system| sheepdog://HOSTNAME:PORT/IMAGE
-
 iSCSI LUNs
 ~~~~~~~~~~
 

docs/system/removed-features.rst

@@ -474,3 +474,10 @@ VXHS backend (removed in 5.1)
 '''''''''''''''''''''''''''''
 
 The VXHS code did not compile since v2.12.0. It was removed in 5.1.
+
+``sheepdog`` driver (removed in 6.0)
+''''''''''''''''''''''''''''''''''''
+
+The corresponding upstream server project is no longer maintained.
+Users are recommended to switch to an alternative distributed block
+device driver such as RBD.

meson.build

@@ -2634,7 +2634,6 @@ if have_block
   summary_info += {'vvfat support':     config_host.has_key('CONFIG_VVFAT')}
   summary_info += {'qed support':       config_host.has_key('CONFIG_QED')}
   summary_info += {'parallels support': config_host.has_key('CONFIG_PARALLELS')}
-  summary_info += {'sheepdog support':  config_host.has_key('CONFIG_SHEEPDOG')}
   summary_info += {'FUSE exports':      fuse.found()}
 endif
 summary(summary_info, bool_yn: true, section: 'Block layer support')

qapi/block-core.json

@@ -2818,7 +2818,6 @@
             'luks', 'nbd', 'nfs', 'null-aio', 'null-co', 'nvme', 'parallels',
             'preallocate', 'qcow', 'qcow2', 'qed', 'quorum', 'raw', 'rbd',
             { 'name': 'replication', 'if': 'defined(CONFIG_REPLICATION)' },
-            'sheepdog',
             'ssh', 'throttle', 'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat' ] }
 
 ##
@@ -3651,26 +3650,6 @@
             '*key-secret': 'str',
             '*server': ['InetSocketAddressBase'] } }
 
-##
-# @BlockdevOptionsSheepdog:
-#
-# Driver specific block device options for sheepdog
-#
-# @vdi: Virtual disk image name
-# @server: The Sheepdog server to connect to
-# @snap-id: Snapshot ID
-# @tag: Snapshot tag name
-#
-# Only one of @snap-id and @tag may be present.
-#
-# Since: 2.9
-##
-{ 'struct': 'BlockdevOptionsSheepdog',
-  'data': { 'server': 'SocketAddress',
-            'vdi': 'str',
-            '*snap-id': 'uint32',
-            '*tag': 'str' } }
-
 ##
 # @ReplicationMode:
 #
@@ -4037,7 +4016,6 @@
       'rbd':        'BlockdevOptionsRbd',
       'replication': { 'type': 'BlockdevOptionsReplication',
                        'if': 'defined(CONFIG_REPLICATION)' },
-      'sheepdog':   'BlockdevOptionsSheepdog',
       'ssh':        'BlockdevOptionsSsh',
       'throttle':   'BlockdevOptionsThrottle',
       'vdi':        'BlockdevOptionsGenericFormat',
@@ -4496,74 +4474,6 @@
             '*zeroed-grain':    'bool' } }
 
 
-##
-# @SheepdogRedundancyType:
-#
-# @full: Create a fully replicated vdi with x copies
-# @erasure-coded: Create an erasure coded vdi with x data strips and
-#                 y parity strips
-#
-# Since: 2.12
-##
-{ 'enum': 'SheepdogRedundancyType',
-  'data': [ 'full', 'erasure-coded' ] }
-
-##
-# @SheepdogRedundancyFull:
-#
-# @copies: Number of copies to use (between 1 and 31)
-#
-# Since: 2.12
-##
-{ 'struct': 'SheepdogRedundancyFull',
-  'data': { 'copies': 'int' }}
-
-##
-# @SheepdogRedundancyErasureCoded:
-#
-# @data-strips: Number of data strips to use (one of {2,4,8,16})
-# @parity-strips: Number of parity strips to use (between 1 and 15)
-#
-# Since: 2.12
-##
-{ 'struct': 'SheepdogRedundancyErasureCoded',
-  'data': { 'data-strips': 'int',
-            'parity-strips': 'int' }}
-
-##
-# @SheepdogRedundancy:
-#
-# Since: 2.12
-##
-{ 'union': 'SheepdogRedundancy',
-  'base': { 'type': 'SheepdogRedundancyType' },
-  'discriminator': 'type',
-  'data': { 'full': 'SheepdogRedundancyFull',
-            'erasure-coded': 'SheepdogRedundancyErasureCoded' } }
-
-##
-# @BlockdevCreateOptionsSheepdog:
-#
-# Driver specific image creation options for Sheepdog.
-#
-# @location: Where to store the new image file
-# @size: Size of the virtual disk in bytes
-# @backing-file: File name of a base image
-# @preallocation: Preallocation mode for the new image (default: off;
-#                 allowed values: off, full)
-# @redundancy: Redundancy of the image
-# @object-size: Object size of the image
-#
-# Since: 2.12
-##
-{ 'struct': 'BlockdevCreateOptionsSheepdog',
-  'data': { 'location':         'BlockdevOptionsSheepdog',
-            'size':             'size',
-            '*backing-file':    'str',
-            '*preallocation':   'PreallocMode',
-            '*redundancy':      'SheepdogRedundancy',
-            '*object-size':     'size' } }
-
 ##
 # @BlockdevCreateOptionsSsh:
 #
@@ -4687,7 +4597,6 @@
       'qcow2':          'BlockdevCreateOptionsQcow2',
       'qed':            'BlockdevCreateOptionsQed',
       'rbd':            'BlockdevCreateOptionsRbd',
-      'sheepdog':       'BlockdevCreateOptionsSheepdog',
       'ssh':            'BlockdevCreateOptionsSsh',
       'vdi':            'BlockdevCreateOptionsVdi',
       'vhdx':           'BlockdevCreateOptionsVhdx',
@@ -5322,7 +5231,7 @@
 #
 # Notes: In transaction, if @name is empty, or any snapshot matching @name
 #        exists, the operation will fail. Only some image formats support it,
-#        for example, qcow2, rbd, and sheepdog.
+#        for example, qcow2, and rbd.
 #
 # Since: 1.7
 ##

qapi/transaction.json

@@ -112,10 +112,10 @@
 #
 # On failure, the original disks pre-snapshot attempt will be used.
 #
-# For internal snapshots, the dictionary contains the device and the snapshot's
+# For internal snapshots, the dictionary contains the device and the
-# name.  If an internal snapshot matching name already exists, the request will
+# snapshot's name.  If an internal snapshot matching name already exists,
-# be rejected.  Only some image formats support it, for example, qcow2, rbd,
+# the request will be rejected.  Only some image formats support it, for
-# and sheepdog.
+# example, qcow2, and rbd,
 #
 # On failure, qemu will try delete the newly created internal snapshot in the
 # transaction.  When an I/O error occurs during deletion, the user needs to fix

tests/qemu-iotests/005

@@ -52,11 +52,6 @@ if [ "$IMGFMT" = "vpc" ]; then
     _notrun "image format $IMGFMT does not support large image sizes"
 fi
 
-# sheepdog image is limited to 4TB, so we can't test it here
-if [ "$IMGPROTO" = "sheepdog" ]; then
-    _notrun "image protocol $IMGPROTO does not support large image sizes"
-fi
-
 # Sanity check: For raw, we require a file system that permits the creation
 # of a HUGE (but very sparse) file. Check we can create it before continuing.
 if [ "$IMGFMT" = "raw" ]; then

tests/qemu-iotests/025

@@ -39,7 +39,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 . ./common.pattern
 
 _supported_fmt raw qcow2 qed luks
-_supported_proto file sheepdog rbd nfs fuse
+_supported_proto file rbd nfs fuse
 
 echo "=== Creating image"
 echo

tests/qemu-iotests/check

@@ -65,8 +65,7 @@ def make_argparser() -> argparse.ArgumentParser:
         mg.add_argument('-' + fmt, dest='imgfmt', action='store_const',
                         const=fmt, help=f'test {fmt}')
 
-    protocol_list = ['file', 'rbd', 'sheepdog', 'nbd', 'ssh', 'nfs',
+    protocol_list = ['file', 'rbd', 'nbd', 'ssh', 'nfs', 'fuse']
-                     'fuse']
     g_prt = p.add_argument_group(
         '  image protocol options',
         'The following options set the IMGPROTO environment variable. '

tests/qemu-iotests/common.rc

@@ -641,10 +641,6 @@ _cleanup_test_img()
             rbd --no-progress rm "$TEST_DIR/t.$IMGFMT" > /dev/null
             ;;
 
-        sheepdog)
-            collie vdi delete "$TEST_DIR/t.$IMGFMT"
-            ;;
-
     esac
 }