RE: trouble on windows network share

From: David Goldfarb <deg@degel.com>
Date: May 6, 2013, 09:53 UTC
Message-ID: <8B6563E531152E4190313499F193F94214AAAB42@mbx500-u1-lo-3.exch500.msoutlookonline.net>
In-Reply-To: <87ip2wla12.fsf@linux-k42r.v.cablecom.net>

Looks like it works.

>From the windows machine:

    U:\foo>git cat-file -p 0b89efdeef245ed6a0a7eacc5c578629a141f856
    100644 blob b02e7c87fe376a353ea4f014bdb3f5200a946b37    foo1
    100644 blob 2cbf64f759a62392ad9dfe1fb9c2cdb175876014    foo2

    U:\foo>

Double-checking that nothing was fixed or changed when I earlier committed the file from Linux, here's a second test:

    U:\foo>git cat-file -p 0b89efdeef245ed6a0a7eacc5c578629a141f856
    100644 blob b02e7c87fe376a353ea4f014bdb3f5200a946b37    foo1
    100644 blob 2cbf64f759a62392ad9dfe1fb9c2cdb175876014    foo2
    
    U:\foo>git status
    # On branch master
    # Untracked files:
    #   (use "git add <file>..." to include in what will be committed)
    #
    #       trace1
    #       trace2
    nothing added to commit but untracked files present (use "git add" to track)
    
    U:\foo>git add trace1
    
    U:\foo>git commit trace1 -m "testing"
    error: unable to find cecae5b4c87ea21aef513fcfcd5c27fe87e0536f
    fatal: cecae5b4c87ea21aef513fcfcd5c27fe87e0536f is not a valid object
    
    U:\foo>git cat-file -p cecae5b4c87ea21aef513fcfcd5c27fe87e0536f
    100644 blob b02e7c87fe376a353ea4f014bdb3f5200a946b37    foo1
    100644 blob 2cbf64f759a62392ad9dfe1fb9c2cdb175876014    foo2
    100644 blob 19102815663d23f8b75a47e7a01965dcdc96468c    test.txt
    100644 blob c9009b02950964cf1d5281125e6e2f647dd9dc16    trace1

   U:\foo>

David

-----Original Message-----
From: Thomas Rast [mailto:trast@inf.ethz.ch] 
Sent: Monday, May 06, 2013 12:42 PM
To: David Goldfarb
Cc: git@vger.kernel.org
Subject: Re: trouble on windows network share

David Goldfarb <deg@degel.com> writes:

Show 31 quoted lines

> Git works correctly under Linux (Ubuntu 12.04; git 1.7.9.5).  I've attached the strace outputs. (Note: for reasons that are probably irrelevant, I needed to run the commands sudo'd. Shout back if this is an issue).
>
> Under Windows 7, Cygwin git 1.7.9, commit fails:
>   U:\foo>git commit -m "added foo2"
>   error: unable to find 0b89efdeef245ed6a0a7eacc5c578629a141f856
>   fatal: 0b89efdeef245ed6a0a7eacc5c578629a141f856 is not a valid 
> object
>
> For what it's worth, note that the file does exist.
>   U:\foo>ls -l .git/objects/0b
>   total 1024
>   -rwxrw-r-- 1 ???????? ???????? 74 May  5 01:15 
> 89efdeef245ed6a0a7eacc5c578629a141f856
>
> (I'm not sure why the permissions are trashed. Seems to be a Cygwin thing, or maybe my Cygwin config. The "??????" also  appears on local files, and I believe also with files on the old Buffalo drive, so I don't think it is relevant to the problem).  Just in case, here's the same dir, as seen from the Ubuntu VM:
>
>   deg@ubuntu:/mnt/users/foo$ ls -l .git/objects/0b
>   total 64
>   -rwxr-xr-x 0 root root 74 May  5 01:15 
> 89efdeef245ed6a0a7eacc5c578629a141f856
>
> Again, note that there is some user permissions lossage here. I don't know enough about Linux mount or CIFS, and apparently did the mount in a way that everything seems to appear to be stuck owned by root. (same problem I hinted at above). Hope this is not relevant to the problem.
>
> Here's how the same directory looks, when I'm ssh'd into the NAS box itself:
>
>    CentralPark:/shares/Users/foo# ls -l .git/objects/0b
>   total 64
>   -rwxrw-r-- 1 deg share 74 May  5 01:15 
> 89efdeef245ed6a0a7eacc5c578629a141f856
>
> In any event, the symptoms don't seem to be a permissions problem, so all this extra info is probably just a red herring, I hope.

Hrm.  What about what Jeff already asked of the OP (and AFAICS never got a reply)?

} If it's a race condition between the write and the subsequent read in } the same process, then it would be solved by looking at the object } later. Does "git cat-file -p 6838761d549cf76033d2e9faf5954e62839eb25d" } work, or is the object forever inaccessible?

In your case: git cat-file -p 0b89efdeef245ed6a0a7eacc5c578629a141f856

-- Thomas Rast trast@{inf,student}.ethz.ch