On Wed, Apr 06, 2016 at 06:01:31PM +0200, Jean-Pierre André wrote: > There are four bad file names in the system32 directory, > they have a similar name with a bad surrogate pair > followed by ".log". A fifth one has a similar name, but > it has a valid surrogate pair. > > They are small files (108 or 132 bytes) created at different > dates. One of them is recent, maybe the customer can > remember something specific being started on Monday > (mornings in the US). > > Here are the creation dates : > > Thu Feb 18 10:47:30 2016 UTC > Mon Aug 18 14:08:27 2014 UTC > Mon Oct 5 13:25:12 2015 UTC > Mon Jun 4 11:43:29 2012 UTC > Mon Aug 18 14:02:22 2014 UTC
Thanks for your detailed analysis. I will ask the reporter if they know anything about this. > As I said surrogate pairs are present, which make them > unlikely to have been created by Windows XP. The pairs > are : > > da5c dc93 (this is the valid one) > dc5c dc93 > dd5c dc93 > de24 dc93 > de5c dc93 So if I understand what's going on, surrogate pairs are not in general bad, but these particular ones are invalid (except the first) because the first word in the pair >= 0xdc00. > >Plus, it'd be nice if ntfs-3g could ignore (or at least not give a > >hard error) in these cases. It's actually the getdents(2) system call > >which fails, so any access at all to the directory returns -EILSEQ. > > This will mean (optional) cheating with the translations > so that bad Unicode characters can translate to utf8 and > back to bad Unicode. > > >We were trying to read a few files from \Windows\System32, it's most > >likely that the "corrupt" file is not a file that we care about. > > I can provide disk patches if you want to delete them. The problem is not this particular disk image. The problem is that when we use virt-v2v to convert 1000s of Windows guests we don't want to hit this problem with some guest. virt-v2v examines a few files in \Windows\system32, but when it hits a guest like this one it will die, even though the corrupt name has nothing to do with any file that virt-v2v cares about nor is trying to open. I'll have a look at the code and see if there's a way to add a mount option to be less picky. Thanks again, Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into KVM guests. http://libguestfs.org/virt-v2v ------------------------------------------------------------------------------ _______________________________________________ ntfs-3g-devel mailing list ntfs-3g-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ntfs-3g-devel
