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    XCP-ng 8.3 updates announcements and testing

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    • stormiS Offline
      stormi Vates 🪐 XCP-ng Team
      last edited by stormi

      We just published most of the updates tested above, plus embargoed security fixes:

      https://xcp-ng.org/blog/2026/04/28/april-2026-security-and-maintenance-updates-for-xcp-ng-8-3-lts/

      The release of the QCOW2 image format feature (packages sm, sm-fairlock and blktap) is planned in the coming days. You can still update a system which has these test packages with the security updates published today.

      Thanks everyone for the tests!

      M acebmxerA 2 Replies Last reply Reply Quote 3
      • M Offline
        manilx @stormi
        last edited by

        @stormi Updated 2 pools @office but on both RPU failed after updating master and emptying secondary host. Had to install patches manually and then move VM's back......

        stormiS 1 Reply Last reply Reply Quote 3
        • acebmxerA Online
          acebmxer @stormi
          last edited by

          @stormi

          Well I just ran rolling pool update on my 2 host home lab. I wanted to watch to make sure there were no issues. Of coarse I got distracted. Only to come back and find both host updated and running. Will continue to monitor.

          F 1 Reply Last reply Reply Quote 2
          • F Offline
            flakpyro @acebmxer
            last edited by

            Updates deployed, no issues so far.

            1 Reply Last reply Reply Quote 3
            • stormiS Offline
              stormi Vates 🪐 XCP-ng Team @manilx
              last edited by

              @manilx said:

              @stormi Updated 2 pools @office but on both RPU failed after updating master and emptying secondary host. Had to install patches manually and then move VM's back......

              Have you kept the logs?

              M 1 Reply Last reply Reply Quote 0
              • M Offline
                manilx @stormi
                last edited by manilx

                @stormi Did not check logs but if you tell me what to look for I can.
                In config-logs on XOA there is nothing relevant.

                M 1 Reply Last reply Reply Quote 0
                • M Offline
                  MajorP93 @manilx
                  last edited by MajorP93

                  I updated both my test and production XCP-ng environments.

                  No issues during updates on all 6 hosts.

                  M 1 Reply Last reply Reply Quote 2
                  • M Offline
                    manilx @MajorP93
                    last edited by

                    @MajorP93 Pls note that the updates had no issues. Just the RPU did not complete. 2 different things.....

                    M 1 Reply Last reply Reply Quote 0
                    • M Offline
                      MajorP93 @manilx
                      last edited by

                      @manilx It's absolutely clear to me that the method of installing updates and the changes provided by the updated packages are 2 different things.
                      I was not commenting on your message but rather sharing my own experience with this round of patches as this thread is generally related to XCP-ng patches.

                      M 1 Reply Last reply Reply Quote 0
                      • M Offline
                        manilx @MajorP93
                        last edited by

                        @MajorP93 As you replied to my message and not to stormi.... Just wanted to clear up any misunderstanding.

                        M 1 Reply Last reply Reply Quote 0
                        • M Offline
                          MajorP93 @manilx
                          last edited by MajorP93

                          @manilx No I did not. I replied to this thread in general not to your post. When looking at the answers to your specific post where you reported the RPU issue I can only see 1 reply which was written by Stormi (asking for logs).

                          Going forward: you can identify replies to your posts by either looking at posts that quoted your message or tagged your username using the @ character.

                          1 Reply Last reply Reply Quote 0
                          • stormiS Offline
                            stormi Vates 🪐 XCP-ng Team
                            last edited by

                            Yes, new update candidates, again!

                            This is, in theory, the very last round of fixes before QCOW2 support comes as an official update!

                            What changed

                            Storage

                            • sm + blktap:
                              • Fix a never ending coalesce task and an associated tapdisk crash which would leave the QCOW2 VDI corrupted. Thanks @emerson for reporting the issue!
                              • Attempting to migrate a QCOW2 towards a SR that supports QCOW2 but prefers VHD will now automatically create a QCOW2 disk at the destination if the disk is bigger than 2 TiB. Previously, it was documented as a known issue that it would attempt to create a VHD and fail.
                              • Another known issue fixed: attempting to resize a QCOW2 VDI with a snapshot on a LVM-based SR no longer fails.
                            • xapi:
                              • prevent long migrations for failing due to expiring XAPI session.
                              • More security fixes related to XSA-489.

                            Versions:

                            • blktap: 3.55.5-6.6.xcpng8.3 -> 3.55.5-6.7.xcpng8.3
                            • sm: 3.2.12-17.6.xcpng8.3 -> 3.2.12-17.7.xcpng8.3
                            • xapi: 26.1.3-1.9.xcpng8.3 -> 26.1.3-1.10.xcpng8.3

                            Test on XCP-ng 8.3

                            If you are using XOSTOR, please refer to our documentation for the update method.

                            yum clean metadata --enablerepo=xcp-ng-testing,xcp-ng-candidates
yum update --enablerepo=xcp-ng-testing,xcp-ng-candidates
reboot

                            The usual update rules apply: pool coordinator first, etc.

                            What to test

                            Anything related to storage, be it with VHD or QCOW2 disks.

                            Test window before official release of the updates

                            ~3 days

                            F B 2 Replies Last reply Reply Quote 1
                            • F Offline
                              flakpyro @stormi
                              last edited by

                              @stormi Updates deployed, no issues so far.

                              1 Reply Last reply Reply Quote 2
                              • I Offline
                                IgorGlock
                                last edited by

                                I could reproduce a bug: cloning a VDI (fast and slow) from SR-1 to SR-2 does not work.
                                I got a pool, current qcow2 (xcp-ng-testing,xcp-ng-candidates), a template (vm), two SR attached via FC HBA, everything else works fine.

                                	
id	"0moocnjj4-jmge69z174"
properties	
method	"vm.create"
params	
acls	[]
clone	false
existingDisks	
0	
name_label	"xcpwin-vm-200.lab.testing.company.net C"
name_description	"Created by XO"
size	64424509440
$SR	"e69a6183-dc17-5b0e-0794-50ee8f57c521"
name_label	"xcpwin-vm-200.lab.testing.company.net"
template	"671e59e0-f59d-fd96-7426-9886ad9b8ee3"
VDIs	[]
VIFs	
0	
network	"261a821c-a373-ba36-2c44-487ed0e1a202"
allowedIpv4Addresses	[]
allowedIpv6Addresses	[]
CPUs	4
cpusMax	4
cpuWeight	null
cpuCap	null
name_description	"Test VM"
memory	4294967296
bootAfterCreate	true
copyHostBiosStrings	false
createVtpm	false
destroyCloudConfigVdiAfterBoot	false
secureBoot	false
share	false
coreOs	false
tags	[]
hvmBootFirmware	"uefi"
name	"API call: vm.create"
userId	"5f5f1e9c-c928-4898-ab88-62b201698476"
type	"api.call"
start	1777726828192
status	"failure"
updatedAt	1777727473136
end	1777727473136
result	
code	"INTERNAL_ERROR"
params	
0	"Storage_error ([S(Internal_error);S(Storage_error ([S(Migration_preparation_failure);S(Storage_error ([S(Backend_error);[S(SR_BACKEND_FAILURE_1200);[S();S(list index out of range);S()]]]))]))])"
task	
uuid	"cc16d4ba-ce10-58ef-10c0-808872ec30ca"
name_label	"Async.VDI.pool_migrate"
name_description	""
allowed_operations	[]
current_operations	{}
created	"20260502T13:08:44Z"
finished	"20260502T13:10:25Z"
status	"failure"
resident_on	"OpaqueRef:6cac1d11-e91e-5288-8ec8-3d84e6288952"
progress	1
type	"<none/>"
result	""
error_info	
0	"INTERNAL_ERROR"
1	"Storage_error ([S(Internal_error);S(Storage_error ([S(Migration_preparation_failure);S(Storage_error ([S(Backend_error);[S(SR_BACKEND_FAILURE_1200);[S();S(list index out of range);S()]]]))]))])"
other_config	{}
subtask_of	"OpaqueRef:NULL"
subtasks	[]
backtrace	"(((process xapi)(filename ocaml/xapi/xapi_vm_migrate.ml)(line 1815))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 24))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 39))((process xapi)(filename ocaml/xapi/xapi_vm_migrate.ml)(line 2105))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 24))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 39))((process xapi)(filename ocaml/xapi/xapi_vm_migrate.ml)(line 2095))((process xapi)(filename ocaml/xapi/message_forwarding.ml)(line 141))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 24))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 39))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 24))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 39))((process xapi)(filename ocaml/xapi/rbac.ml)(line 228))((process xapi)(filename ocaml/xapi/rbac.ml)(line 238))((process xapi)(filename ocaml/xapi/server_helpers.ml)(line 78)))"
message	"INTERNAL_ERROR(Storage_error ([S(Internal_error);S(Storage_error ([S(Migration_preparation_failure);S(Storage_error ([S(Backend_error);[S(SR_BACKEND_FAILURE_1200);[S();S(list index out of range);S()]]]))]))]))"
name	"XapiError"
stack	"XapiError: INTERNAL_ERROR(Storage_error ([S(Internal_error);S(Storage_error ([S(Migration_preparation_failure);S(Storage_error ([S(Backend_error);[S(SR_BACKEND_FAILURE_1200);[S();S(list index out of range);S()]]]))]))]))\n    at Function.wrap (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/_XapiError.mjs:16:12)\n    at default (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/_getTaskResult.mjs:13:29)\n    at Xapi._addRecordToCache (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1078:24)\n    at file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1112:14\n    at Array.forEach (<anonymous>)\n    at Xapi._processEvents (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1102:12)\n    at Xapi._watchEvents (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1275:14)"
                                DanpD dthenotD 2 Replies Last reply Reply Quote 1
                                • DanpD Offline
                                  Danp Pro Support Team @IgorGlock
                                  last edited by

                                  @IgorGlock Thanks for the report. Can you elaborate on the exact steps required to reproduce this? Also, are you running XOA or XO from sources? Which version or commit?

                                  I 1 Reply Last reply Reply Quote 1
                                  • I Offline
                                    IgorGlock @Danp
                                    last edited by

                                    @Danp
                                    I got XOA appliance with trial license for our lab.
                                    Release channels: latest
                                    Current version: 6.4.0

                                    I removed the 2 SR and created them new, use qcow2 again. VM migration from SR-1 to SR-2 failed too.

                                    	
id	"0mopksrzz-rnu1secaodl"
properties	
method	"vm.migrate"
params	
vm	"64b89180-1f63-3625-4f92-efb5cc15b9d6"
sr	"81a41e32-49e5-0f5f-7692-2fc49ec875a2"
targetHost	"253ea664-09bf-4212-a3b8-f1588406190e"
name	"API call: vm.migrate"
userId	"5f5f1e9c-c928-4898-ab88-62b201698476"
type	"api.call"
start	1777800975551
status	"failure"
updatedAt	1777801141331
infos	
0	
message	"migration with storage motion"
warnings	
0	
data	
host	"253ea664-09bf-4212-a3b8-f1588406190e"
sr	"81a41e32-49e5-0f5f-7692-2fc49ec875a2"
message	"host have no PBD in the SR"
1	
data	
host	"253ea664-09bf-4212-a3b8-f1588406190e"
sr	"81a41e32-49e5-0f5f-7692-2fc49ec875a2"
message	"host have no PBD in the SR"
end	1777801141331
result	
code	"INTERNAL_ERROR"
params	
0	"Storage_error ([S(Internal_error);S(Storage_error ([S(Migration_preparation_failure);S(Storage_error ([S(Backend_error);[S(SR_BACKEND_FAILURE_1200);[S();S(list index out of range);S()]]]))]))])"
task	
uuid	"af35352c-cdbc-0567-8ccc-167d636bff11"
name_label	"Async.VM.migrate_send"
name_description	""
allowed_operations	[]
current_operations	{}
created	"20260503T09:36:15Z"
finished	"20260503T09:39:01Z"
status	"failure"
resident_on	"OpaqueRef:0d7b2e70-c99b-cf1c-7a54-c98d1916af44"
progress	1
type	"<none/>"
result	""
error_info	
0	"INTERNAL_ERROR"
1	"Storage_error ([S(Internal_error);S(Storage_error ([S(Migration_preparation_failure);S(Storage_error ([S(Backend_error);[S(SR_BACKEND_FAILURE_1200);[S();S(list index out of range);S()]]]))]))])"
other_config	{}
subtask_of	"OpaqueRef:NULL"
subtasks	[]
backtrace	"(((process xapi)(filename ocaml/xapi/xapi_vm_migrate.ml)(line 1815))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 24))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 39))((process xapi)(filename ocaml/xapi/message_forwarding.ml)(line 141))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 24))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 39))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 24))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 39))((process xapi)(filename ocaml/xapi/message_forwarding.ml)(line 2650))((process xapi)(filename ocaml/xapi/rbac.ml)(line 228))((process xapi)(filename ocaml/xapi/rbac.ml)(line 238))((process xapi)(filename ocaml/xapi/server_helpers.ml)(line 78)))"
message	"INTERNAL_ERROR(Storage_error ([S(Internal_error);S(Storage_error ([S(Migration_preparation_failure);S(Storage_error ([S(Backend_error);[S(SR_BACKEND_FAILURE_1200);[S();S(list index out of range);S()]]]))]))]))"
name	"XapiError"
stack	"XapiError: INTERNAL_ERROR(Storage_error ([S(Internal_error);S(Storage_error ([S(Migration_preparation_failure);S(Storage_error ([S(Backend_error);[S(SR_BACKEND_FAILURE_1200);[S();S(list index out of range);S()]]]))]))]))\n    at Function.wrap (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/_XapiError.mjs:16:12)\n    at default (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/_getTaskResult.mjs:13:29)\n    at Xapi._addRecordToCache (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1078:24)\n    at file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1112:14\n    at Array.forEach (<anonymous>)\n    at Xapi._processEvents (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1102:12)\n    at Xapi._watchEvents (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1275:14)"
                                    DanpD 1 Reply Last reply Reply Quote 1
                                    • B Offline
                                      bufanda @stormi
                                      last edited by

                                      @stormi installed updates. Did some backups and VM migrations between various storages (bad and qcow2) looks good so far.

                                      1 Reply Last reply Reply Quote 1
                                      • DanpD Offline
                                        Danp Pro Support Team @IgorGlock
                                        last edited by

                                        @IgorGlock Are you able to open the support tunnel for us to investigate? You can either post the tunnel ID here or open a support ticket.

                                        1 Reply Last reply Reply Quote 0
                                        • dthenotD Offline
                                          dthenot Vates 🪐 XCP-ng Team @IgorGlock
                                          last edited by

                                          @IgorGlock Hello,

                                          Could you share the exception that should be in /var/log/SMlog?

                                          1 Reply Last reply Reply Quote 0
                                          • I Offline
                                            IgorGlock
                                            last edited by

                                            Hello,

                                            I deleted the entire XOA and downloaded fresh image, recreated configuration and blank SR.
                                            The issue is gone. I will test some VDI migrations this week.

                                            There are is some performance impact and timeouts when creating 100-200 VMs on single 10 TB SR. I use xo-cli vm.create script. See you later 🙂

                                            1 Reply Last reply Reply Quote 1

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