XPost: linux.debian.bugs.dist   
   From: phil@hands.com   
      
   Source: linux   
   Version: 6.12.57-1   
   Severity: normal   
      
   The setup we have on openqa.debian.net and it's openqa-worker machines is that   
   the workers have a read-only NFS mount of a share containing the .iso images   
   that are used for booting the test VMs.   
      
   All kernels that I have available since 6.12.48 (6.12.57 6.12.69 6.12.73 &   
   6.18.5) cause the workers to fail when they try to apply a "consistent read"   
   lock, giving the error message: No locks available   
      
   One can demonstrate that by running this on the NFS client:   
      
     $ flock -e -w 4 /var/lib/openqa/factory/iso/xfce_sid_20260223T140607Z.iso   
   sleep 1   
     flock: /var/lib/openqa/factory/iso/xfce_sid_20260223T140607Z.iso: No locks   
   available   
      
   meanwhile, running that flock on the server works fine.   
      
   BTW Here are the journals from booting various versions of the kernel:   
      
     https://hands.com/~phil/tmp/openqa-nfs-lock-issue/   
      
   Cheers, Phil.   
      
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