Unable to Copy/Create file on NFS share on macOS #72786

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1. ghost added

   area-System.IO

   on Jul 25, 2022
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4. danmoseley commented on Jul 25, 2022

   

   danmoseley

   on Jul 25, 2022

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   Thanks for the report. It would be interesting to compare IO traces to when this is done successfully (eg in the shell). On Linux one would use strace. I don't have access to a Mac but I believe it has something similar called dtrace?
5. jozkee commented on Jul 25, 2022

   

   jozkee

   on Jul 25, 2022

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   It works on my macbook using the three ways you mentioned (finder, terminal, and .NET app).

   This is my sudo exportfs -v on my Ubuntu NFS server:

   /srv/nfs4/home  <world>(rw,wdelay,crossmnt,insecure,root_squash,no_subtree_check,sec=sys,rw,insecure,root_squash,no_all_squash)
   /srv/nfs4       <world>(rw,wdelay,crossmnt,root_squash,no_subtree_check,fsid=0,sec=sys,rw,secure,root_squash,no_all_squash)
   

   I also did a chmod 777 /srv/nfs4/home to allow the the client to write to the shared folder.

   I'm not sure what might be different on your mac. Perhaps you could share the strace that @danmoseley mentioned (it's called dtruss on macos).
6. jozkee

   added this to the Future milestone on Jul 25, 2022
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11. mikkeljohnsen commented on Jul 26, 2022

    

    mikkeljohnsen

    on Jul 26, 2022

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    ...
    select(0x39, 0x7FFEECD066D0, 0x7FFEECD06650, 0x7FFEECD065D0, 0x7FFEECD06750)		 = 0 0
    select(0x39, 0x7FFEECD066D0, 0x7FFEECD06650, 0x7FFEECD065D0, 0x7FFEECD06750)		 = 0 0
    select(0x39, 0x7FFEECD066D0, 0x7FFEECD06650, 0x7FFEECD065D0, 0x7FFEECD06750)		 = 0 0
    select(0x39, 0x7FFEECD066D0, 0x7FFEECD06650, 0x7FFEECD065D0, 0x7FFEECD06750)		 = 0 0
    workq_kernreturn(0x100, 0x70000E82AB80, 0x1)		 = 0 -2
    bsdthread_ctl(0x100, 0x0, 0x21573)		 = 0 ?P???0
    bsdthread_ctl(0x100, 0x0, 0x0)		 = 0 0
    stat64("/Volumes/files/p10001-20000/p13001-14000/p13101-13200/13156/\0", 0x7FFEECD05960, 0x0)		 = 0 0
    open("/Users/anja/Downloads/BekraeftelseFraTDC.pdf\0", 0x1000000, 0x1B6)		 = 327 0
    fstat64(0x147, 0x7FFEECD05980, 0x0)		 = 0 0
    flock(0x147, 0x5, 0x0)		 = 0 0
    open("/Volumes/files/p10001-20000/p13001-14000/p13101-13200/13156/70493.pdf\0", 0x1000202, 0x1B6)		 = -1 1
    psynch_cvsignal(0x7FDD962B2278, 0x100, 0x0)		 = 257 0
    flock(0x147, 0x8, 0x0)		 = 0 0
    close(0x147)		 = 0 0
    sendto(0x67, 0x1835D5CB8, 0xE)		 = 14 0
    recvmsg(0x67, 0x7FFEECD00DF0, 0x0)		 = -1 35
    gettimeofday(0x7FFEECD007E8, 0x0, 0x0)		 = 0 0
    psynch_cvwait(0x7FDD962B2278, 0x100000100, 0x0)		 = 0 0
    gettimeofday(0x70000ED08A18, 0x0, 0x0)		 = 0 0
    kevent(0x68, 0x0, 0x0)		 = 2 0
    psynch_cvsignal(0x7FDD9680EA78, 0x1560000015700, 0x15500)		 = 257 0
    psynch_cvwait(0x7FDD9680EA78, 0x1560100015700, 0x15500)		 = 0 read0
    psynch_cvsignal(0x7FDD969A8278, 0x260000002700, 0x2600)		 = 257 0
    recvmsg(0x67, 0x7FFEECD00C80, 0x0)		 = 20 0
    dtrace: error on enabled probe ID 2252 (ID 167: syscall::write:return): invalid kernel access in action #12 at DIF offset 68
    dtrace: error on enabled probe ID 2252 (ID 167: syscall::write:return): invalid kernel access in action #12 at DIF offset 68
    psynch_cvwait(0x7FDD969A8278, 0x260100002700, 0x2600)		 = 0 0
    psynch_cvsignal(0x7FDD96217878, 0x310000003200, 0x3100)		 = 257 0
    psynch_cvsignal(0x7FDD958E1E78, 0x5E0000005F00, 0x5E00)		 = 257 0
    psynch_cvsignal(0x7FDD968D9478, 0x1F0000002000, 0x1F00)		 = 257 0
    dtrace: error on enabled probe ID 2252 (ID 167: syscall::write:return): invalid kernel access in action #12 at DIF offset 68
    psynch_cvwait(0x7FDD96217878, 0x310100003200, 0x3100)		 = 0 0
    psynch_cvwait(0x7FDD958E1E78, 0x5E0100005F00, 0x5E00)		 = 0 0
    psynch_cvwait(0x7FDD968D9478, 0x1F0100002000, 0x1F00)		 = 0 0
    ...
    
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14. mikkeljohnsen commented on Jul 26, 2022

    

    mikkeljohnsen

    on Jul 26, 2022

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    @jozkee Could you try using this code:

    			var sourceUri = new Uri(sourceFile);
    			var destUri = new Uri(destFile);
    
    			byte[] buffer = new byte[BufferSize];
    
    			using (FileStream sourceStream = File.OpenRead(sourceUri.LocalPath))
    			{
    				using (FileStream destinationStream = File.Create(destUri.LocalPath))
    				{
    					long remaining = sourceStream.Length;
    
    					while (remaining > 0)
    					{
    						int read = await sourceStream.ReadAsync(buffer, 0, BufferSize, token);
    						if (token.IsCancellationRequested) return 0;
    
    						if (read <= 0)
    							throw new EndOfStreamException();
    
    						await destinationStream.WriteAsync(buffer, 0, read, token);
    						if (token.IsCancellationRequested) return 0;
    
    						remaining -= read;
    
    						total += read;
    
    						//progress?.Report(total);
    					}
    				}
    			}
    
15. adamsitnik commented on Aug 17, 2022

    

    adamsitnik

    on Aug 17, 2022

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    But from a dotnet (Net6) application I get "UnauthorizedAccess", when writing. Read is working fine.

    I am 99% sure that it's #55256. The problem is that the fix was tested only on Linux (as there were no macOS bug reports). We need to implement proper file system detection for apple (#69852) and most likely backport the change to 7.0 and 6.0 (it should not be hard; we should be able to reuse the freebsd implementation)
16. adamsitnik

    modified the milestones: Future, 8.0.0 on Aug 17, 2022
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    needs-further-triageIssue has been initially triaged, but needs deeper consideration or reconsiderationIssue has been initially triaged, but needs deeper consideration or reconsideration

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18. ghost added

    in-prThere is an active PR which will close this issue when it is mergedThere is an active PR which will close this issue when it is merged

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19. adamsitnik

    closed this as completedin #74493on Aug 25, 2022
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    in-prThere is an active PR which will close this issue when it is mergedThere is an active PR which will close this issue when it is merged

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21. ghost locked as resolved and limited conversation to collaborators on Sep 24, 2022