[Bug 1865350] Re: fstrim not working with image mounted to path?

[Thomas Huth]

The QEMU project is currently moving its bug tracking to another system.
For this we need to know which bugs are still valid and which could be
closed already. Thus we are setting older bugs to "Incomplete" now.

If you still think this bug report here is valid, then please switch
the state back to "New" within the next 60 days, otherwise this report
will be marked as "Expired". Or please mark it as "Fix Released" if
the problem has been solved with a newer version of QEMU already.

Thank you and sorry for the inconvenience.


** Changed in: qemu
       Status: New => Incomplete

** Tags added: windows

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https://bugs.launchpad.net/bugs/1865350

Title:
  fstrim not working with image mounted to path?

Status in QEMU:
  Incomplete

Bug description:
  
  guest os: windows server standard 2016
  qemu agent version 100.0.0

  os supports trimming
  path mounted image does not support trimming

  C:\Users\Administrator>fsutil behavior query disabledeletenotify
  NTFS DisableDeleteNotify = 0
  ReFS DisableDeleteNotify = 1

  
  [@ ~]# virsh qemu-agent-command vps-xxx '{"execute":"guest-fstrim"}'
  {"return":{"paths":[{"path":"C:\\"},{"path":"C:\\Program 
Files\\Microsoft\\Exchange Server\\V15\\Mailbox\\xxxx\\","error":"The given 
volume path is invalid. (0x89000001)"}]}}

  
  Looks like the fstrim does not like/check images mounted on a path? Nor 
detects if image trimming is supported. xxxx is a ReFS mounted image without 
trimming support. 

  If I enable trimming on the ReFS image, and configure it win2016, the
  result is still the same.

  
  C:\Users\Administrator>fsutil behavior query disabledeletenotify
  NTFS DisableDeleteNotify = 0
  ReFS DisableDeleteNotify = 0

  [root@c03 ~]# virsh qemu-agent-command vps-xxx '{"execute":"guest-fstrim"}'
  {"return":{"paths":[{"path":"C:\\"},{"path":"C:\\Program 
Files\\Microsoft\\Exchange Server\\V15\\Mailbox\\xxxx\\","error":"The given 
volume path is invalid. (0x89000001)"}]}}

  PS. tried this on a win 2016 std server with just one fs, no problems
  then.

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