Re: git 1.5.3.5 error over NFS

From: Bill Lear <rael@zopyra.com>
Date: Nov 12, 2007, 15:39 UTC
Message-ID: <18232.29603.856766.275854@lisa.zopyra.com>
In-Reply-To: <20071109232106.GA3435@steel.home>

On Saturday, November 10, 2007 at 00:21:06 (+0100) Alex Riesen writes:

Show 32 quoted lines

>Bill Lear, Fri, Nov 09, 2007 16:31:39 +0100:
>> I've brought this up before, but I don't recall a resolution to it.
>> 
>> We have an NFS-mounted filesystem, and git pull is choking on it.
>> 
>> % uname -a
>> Linux uhlr.zopyra.com 2.6.9-42.0.2.ELsmp #1 SMP Wed Aug 23 13:38:27 BST 2006 x86_64 x86_64 x86_64 GNU/Linux
>> 
>> % git --version
>> git version 1.5.3.5
>> 
>> % git pull
>> remote: Generating pack...
>> remote: Done counting 998 objects.
>> remote: Result has 836 objects.
>> remote: Deltifying 836 objects.
>> remote:  100% (836/836) done
>> Indexing 836 objects...
>> remote: Total 836 (delta 526), reused 688 (delta 380)
>>   100% (836/836) done
>> Resolving 526 deltas...
>> fatal: cannot pread pack file: No such file or directory
>
>Could you please strace it? With strace -ff?
>
>> fatal: index-pack died with error code 128
>> fatal: Fetch failure: git://source/repo
>> 
>> I looked through the archives of this list and did not see a final
>> resolution, other than a suspected bug in the OS NFS code.
>
>Strace, just to be on the safe side

Ok, I've done the strace -ff. It has generated 176 strace.out.<pid> files. I have placed a tarball of these files on my home server:

  http://www.zopyra.com/~rael/git/git-trace.tar.bz2

The file strace.out.25526 has, at the very end:

[...] open("/etc/mtab", O_RDONLY) = 4 fstat64(0x4, 0xffff6810) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0x1000) = 0xfffffffff7ffd000 read(4, "/dev/sda1 / ext3 rw 0 0\nnone /pr"..., 4096) = 503 close(4) = 0 munmap(0xf7ffd000, 4096) = 0 open("/proc/meminfo", O_RDONLY) = 4 fstat64(0x4, 0xffff6c7c) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0x1000) = 0xfffffffff7ffd000 read(4, "MemTotal: 16396892 kB\nMemFre"..., 1024) = 672 close(4) = 0 munmap(0xf7ffd000, 4096) = 0 write(2, "Resolving 551 deltas.\n", 22) = 22 pread64(3, "", 242, 541) = 0 write(2, "fatal: ", 7) = 7 write(2, "cannot pread pack file: Success", 31) = 31 write(2, "\n", 1) = 1 exit_group(128) = ?

Here is the clipped output of running the strace command:

[...]
[ Process PID=25347 runs in 32 bit mode. ]
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
[ Process PID=25347 runs in 64 bit mode. ]
[ Process PID=25349 runs in 32 bit mode. ]
[...]
[ Process PID=25366 runs in 64 bit mode. ]
[ Process PID=25365 runs in 32 bit mode. ]
ptrace: umoven: Input/output error
[ Process PID=25366 runs in 64 bit mode. ]
[ Process PID=25365 runs in 32 bit mode. ]
[...]
[ Process PID=25365 runs in 32 bit mode. ]
[ Process PID=25366 runs in 64 bit mode. ]
ptrace: umoven: Input/output error
[ Process PID=25365 runs in 32 bit mode. ]
[ Process PID=25366 runs in 64 bit mode. ]
[...]
[ Process PID=25385 runs in 32 bit mode. ]
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
[...]
[ Process PID=25385 runs in 64 bit mode. ]
[ Process PID=25482 runs in 32 bit mode. ]
[ Process PID=25396 runs in 64 bit mode. ]
[ Process PID=25524 runs in 32 bit mode. ]
remote: Generating pack...
remote: Done counting 1052 objects.
remote: Result has 882 objects.
remote: Deltifying 882 objects.
  100% (882/882) done82) done
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
umovestr: Input/output error
Indexing 882 objects.
  100% (882/882) done
Resolving 551 deltas.
remote: Total 882 (delta 551), reused 716 (delta 387)
fatal: cannot pread pack file: Success
fatal: index-pack died with error code 128
[ Process PID=25522 runs in 64 bit mode. ]
Fetch failure: git://source/fusion

Bill