Re: Error "fatal: cannot pread pack file: Success"

From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Feb 28, 2007, 16:34 UTC
Message-ID: <Pine.LNX.4.64.0702280830030.12485@woody.linux-foundation.org>
In-Reply-To: <17893.43522.511785.121778@lisa.zopyra.com>

On Wed, 28 Feb 2007, Bill Lear wrote:

Show 8 quoted lines

> 
> Well, I went ahead and did that.  Here are the results:
> 
> % git clone --bare ~/devel/project
> [...]
> Resolving 2210 deltas.
> fatal: cannot pread pack file: Success [obj[0].offset=39393; obj[1].offset=39602; n=305; obj->size=0; rdy=0; len=207]
> fatal: index-pack died with error code 128

What's "n"? Is that the return value from pread? Or was that "rdy"?

We expect the return value of pread() to be exactly the size we asked for, namely "len". Anything else would be an error, and we know you're not getting a negative return value (since strerror() says "success") unless your pread() is *really* buggered.

But getting a return value of 0 would indicate that your pack-file is seriously corrupt (in particular, it would likely be truncated). And getting a return value of 305 is also weird beyond belief, since we only asked for 207 bytes.

One thing to do (maybe you did already) is to just verify that what you're cloning looks fine:

	cd ~/devel/project
	git fsck --full

just to be safe.

		Linus