[pve-devel] [PATCH qemu-server/manager/docs 0/3] fix #4140: Add option to disable `fs-freeze`/`-thaw` on backup

Christoph Heiss c.heiss at proxmox.com
Wed Feb 1 13:59:15 CET 2023

TL;DR: on Windows guests, the guest agent calls into the VSS (Volume
Shadow Copy) subsystem, which has potential to mess up applications
which hook into this themselves like SQL server, as described in the bug
report [0].

Building upon the proposal in that report, add an (default-enabled)
option to the QGA configuration to disable the behavior if really
needed. Due to its potential to wreak havor, show the user a warning
when disabled.

[0] https://bugzilla.proxmox.com/show_bug.cgi?id=4140

Christoph Heiss (1):
      vzdump: Add VM QGA option to skip `fs-freeze`/`fs-thaw` on backup

 PVE/QemuServer.pm        | 8 +++++++-
 PVE/VZDump/QemuServer.pm | 5 +++++
 2 files changed, 12 insertions(+), 1 deletion(-)

Christoph Heiss (1):
      ui: qga: Add option to turn off fs-freeze/thaw for backup

 www/manager6/Utils.js                     |  2 ++
 www/manager6/form/AgentFeatureSelector.js | 30 +++++++++++++++++++++++++++++-
 2 files changed, 31 insertions(+), 1 deletion(-)

Christoph Heiss (1):
      qm: Add section explaining fs-freeze/thaw QGA option

 qm.adoc | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)


More information about the pve-devel mailing list