"Backing up System Reserved (SYSVOL) partition failed"

Foondel · September 8, 2020, 10:36am

Hello everyone,

First of, I would like to thank @uroni and everyone else involved in developing and maintaining this great software!

We’ve got a QNAP TS-873 as the backup server (v2.4.12) and 5 Windows (10 and 7) clients (v2.4.10) backing up to it, doing only image backups.

3 of the clients (all of which are in “Internet Mode”) have a recurring error (Backing up System Reserved (SYSVOL) partition failed. Image backup failed) each time a backup occurs (whether it’s Full or Incremental) and we can’t figure out how to fix it (although the backup always succeeds after a retry, but it’s annoying and the 2 other clients don’t have this problem).

Things we’ve tried:

Disable IPv6.
Disable any Offload / Green Ethernet / Any Other “Network Optimization” options in the Network Adapter settings in Device Manager.
Change “Transfer Mode” settings (Raw / Hashed).

I’ll post the debug log of one of the clients (Windows 7 64-bit).

Any help would be greatly appreciated!
Thanks again!

EDIT: We’ve just updated the server to v2.4.13.
EDIT2: Attached another log from a different client (Windows 10).

debug.log (131.6 KB)
debug.log (379.0 KB)

Foondel · September 13, 2020, 3:12pm

Would really appreciate any help with this.

Here’s a server log snippet of a failing backup:

2020-09-13 16:51:44: Establish timeout: Deleting internet client “Dentist-PC”
2020-09-13 16:52:02: Authed+capa for client ‘Dentist-PC’ (encrypted-v2, compressed-zstd, token auth) - 1 spare connections
2020-09-13 16:55:44: Starting scheduled full image backup of volume “C:”…
2020-09-13 16:55:44: Backing up SYSVOL…
2020-09-13 16:55:44: Starting scheduled full image backup of volume “SYSVOL”…
2020-09-13 16:55:44: Connecting to target service…
2020-09-13 16:55:54: Connecting on internet connection failed. Service=0
2020-09-13 16:55:54: Establishing internet connection failed. Service=0
2020-09-13 16:55:54: ERROR: Connecting to ClientService of “Dentist-PC” failed: Getting MBR for drive SYSVOL failed
2020-09-13 16:55:54: Establishing internet connection failed. Service=0
2020-09-13 16:55:54: Connecting to ClientService of “Dentist-PC” failed: Error sending ‘running’ (2) ping to client
2020-09-13 16:55:54: Error sending ‘running’ (3) ping to client
2020-09-13 16:56:04: Establishing internet connection failed. Service=0
2020-09-13 16:56:04: ERROR: Connecting to “Dentist-PC” for image backup failed
2020-09-13 16:56:04: Updating statistics…
2020-09-13 16:56:04: Updating image stats…
2020-09-13 16:56:04: Updating file statistics…
2020-09-13 16:56:04: Done updating statistics.
2020-09-13 16:56:04: Establish timeout: Deleting internet client “Dentist-PC”
2020-09-13 16:56:04: Connecting to ClientService of “Dentist-PC” failed: Error sending ‘running’ (2) ping to client
2020-09-13 16:56:04: Error sending ‘running’ (3) ping to client
2020-09-13 16:56:05: ERROR: Backing up System Reserved (SYSVOL) partition failed. Image backup failed
2020-09-13 16:56:05: Time taken for backing up client Dentist-PC: 21s
2020-09-13 16:56:05: ERROR: Backup failed

Foondel · October 1, 2020, 8:09pm

@uroni Any chance you could take a look at this?

artyomtsybulkin · October 5, 2020, 4:12pm

Hello! Periodically got this in logs. But all time this issue related to base OS problems. Try to use Windows tools, check Windows resources about how to check and fix SYSVOL partition. Also check VSS. Normally backup job for SYSVOL processed before system partition backup.
Possible issues: another backup software running, alternative boot loader installed, issues in SYSVOL patition, disk issues (logical/physical - use SMART utility).