qemu-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Qemu-devel] [Bug 1013241] Re: qemu-system-ppc64 hanging occasionally in


From: Thomas Huth
Subject: [Qemu-devel] [Bug 1013241] Re: qemu-system-ppc64 hanging occasionally in disk writes
Date: Fri, 13 Apr 2018 21:28:56 -0000

Looking through old bug tickets... can you still reproduce this issue
with the latest version of QEMU? Or could we close this ticket nowadays?

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

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1013241

Title:
  qemu-system-ppc64 hanging occasionally in disk writes

Status in QEMU:
  Incomplete

Bug description:
  I found last week that qemu-system-ppc64 (from git) hangs occasionally        
  
  under load, and I have a reproducer for it now.  Unfortunately the            
  
  reproducer really takes a long time to run -- usually I can get a hang        
  
  in under 12 hours.                                                            
  
                                                                                
  
  Here is the reproducer case:                                                  
  
                                                                                
  
    https://lists.fedoraproject.org/pipermail/ppc/2012-June/001698.html         
  
                                                                                
  
  Notes:                                                                        
  
                                                                                
  
  (1) Verified by one other person (other than me).  Happens on both            
  
      ppc64 and x86-64 host.                                                    
  
                                                                                
  
  (2) Happens with both Fedora guest kernel 3.3.4-5.fc17.ppc64 and kernel       
  
      3.5.0 that I compiled myself.  The test case above contains 3.3.4-5.      
  
                                                                                
  
  (3) Seems to be a problem in qemu, not the guest.  The reason I think         
  
      this is because I tried to capture a backtrace of the hang using          
  
      remote gdb, but gdb just hung when trying to connect to qemu              
  
      (gdb connects fine before the bug happens).                               
  
                                                                                
  
  (4) Judging by guest messages, appears to be happening when writing           
  
      to the disk.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1013241/+subscriptions



reply via email to

[Prev in Thread] Current Thread [Next in Thread]