Hi, this post is consequence of a issue with Veeam Backup.
Short summary: all the jobs fails with error (another shadow copy creation is already in progress), and the last step was test a backup with Windows Server Backup.
So, i tried a job (Full and VSS mode), but in bot cases, these failed with the error:"The backup operation that started at '2020-04-02T01:08:27.852000000Z' has failed because the Volume Shadow Copy Service operation to create a shadow copy of the volumes being backed up failed with following error code '0x80780021'. Please review the event details for a solution, and then rerun the backup operation once the issue is resolved."
This is a Windows Server 2012 R2, Physical, with Hyper-V role installed and several Productions VMs running on. Is part of a Cluster of 12 nodes.
I tried restart the VSS services, but the error persist. The last weekend we reboot all nodes
There is no errors on writers:
C:\>vssadmin list providers
vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool
(C) Copyright 2001-2013 Microsoft Corp.
Provider name: 'Microsoft CSV Shadow Copy Helper Provider'
Provider type: Software
Provider Id: {26d02d81-6aac-4275-8504-b9c6edc5261d}
Version: 1.0.0.1
Provider name: 'Microsoft CSV Shadow Copy Provider'
Provider type: Software
Provider Id: {400a2ff4-5eb1-44b0-8a05-1fcac0bcf9ff}
Version: 1.0.0.1
Provider name: 'VSS Null Provider'
Provider type: Software
Provider Id: {8202aeda-45bd-48c4-b38b-ea1b7017aec3}
Version: 5.0.158.0
Provider name: 'Microsoft File Share Shadow Copy provider'
Provider type: Fileshare
Provider Id: {89300202-3cec-4981-9171-19f59559e0f2}
Version: 1.0.0.1
Provider name: 'Microsoft Software Shadow Copy provider 1.0'
Provider type: System
Provider Id: {b5946137-7b9f-4925-af80-51abd60b20d5}
Version: 1.0.0.7
Provider name: 'VSS Null Provider'
Provider type: Fileshare
Provider Id: {f4a69dd4-f712-40e3-a6b3-faeff03cb2b8}
Version: 5.0.158.0
**************
C:\>vssadmin list writers
vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool
(C) Copyright 2001-2013 Microsoft Corp.
Writer name: 'Task Scheduler Writer'
Writer Id: {d61d61c8-d73a-4eee-8cdd-f6f9786b7124}
Writer Instance Id: {1bddd48e-5052-49db-9b07-b96f96727e6b}
State: [1] Stable
Last error: No error
Writer name: 'VSS Metadata Store Writer'
Writer Id: {75dfb225-e2e4-4d39-9ac9-ffaff65ddf06}
Writer Instance Id: {088e7a7d-09a8-4cc6-a609-ad90e75ddc93}
State: [1] Stable
Last error: No error
Writer name: 'Performance Counters Writer'
Writer Id: {0bada1de-01a9-4625-8278-69e735f39dd2}
Writer Instance Id: {f0086dda-9efc-47c5-8eb6-a944c3d09381}
State: [1] Stable
Last error: No error
Writer name: 'System Writer'
Writer Id: {e8132975-6f93-4464-a53e-1050253ae220}
Writer Instance Id: {a0f6e4a6-4876-450e-ab27-0dcdb20872d7}
State: [1] Stable
Last error: No error
Writer name: 'Microsoft Hyper-V VSS Writer'
Writer Id: {66841cd4-6ded-4f4b-8f17-fd23f8ddc3de}
Writer Instance Id: {002ec0b5-07cb-41a1-a7a6-a8d1da9178c8}
State: [1] Stable
Last error: No error
Writer name: 'Cluster Shared Volume VSS Writer'
Writer Id: {1072ae1c-e5a7-4ea1-9e4a-6f7964656570}
Writer Instance Id: {879cdb3d-34d7-44ab-8ef3-786195073fe7}
State: [1] Stable
Last error: No error
Writer name: 'ASR Writer'
Writer Id: {be000cbe-11fe-4426-9c58-531aa6355fc4}
Writer Instance Id: {de69ac02-fa58-409a-8c69-00a24a6fa0bc}
State: [1] Stable
Last error: No error
Writer name: 'Shadow Copy Optimization Writer'
Writer Id: {4dc3bdd4-ab48-4d07-adb0-3bee2926fd7f}
Writer Instance Id: {b491f370-506e-4201-aaa7-e9d97ad0acb6}
State: [1] Stable
Last error: No error
Writer name: 'Registry Writer'
Writer Id: {afbab4a2-367d-4d15-a586-71dbb18f8485}
Writer Instance Id: {637adda5-d3c7-4042-9f85-be644ec582a5}
State: [1] Stable
Last error: No error
Writer name: 'BITS Writer'
Writer Id: {4969d978-be47-48b0-b100-f328f07ac1e0}
Writer Instance Id: {0b7f82ca-2e03-421b-8c20-fd8b672df530}
State: [1] Stable
Last error: No error
Writer name: 'WMI Writer'
Writer Id: {a6ad56c2-b509-4e6c-bb19-49d8f43532f0}
Writer Instance Id: {b423f282-8f3b-4000-a59d-bbf288eb66bf}
State: [1] Stable
Last error: No error
Writer name: 'Cluster Database'
Writer Id: {41e12264-35d8-479b-8e5c-9b23d1dad37e}
Writer Instance Id: {886e0d10-ca78-456e-a8e3-ea09b1f547a5}
State: [1] Stable
Last error: No error
Writer name: 'COM+ REGDB Writer'
Writer Id: {542da469-d3e1-473c-9f4f-7847f01fc64f}
Writer Instance Id: {f67dabce-48ba-4166-83c3-cff9cc45fab7}
State: [1] Stable
Last error: No error
Some idea?
Regards¡
Marcos Ferreira