On Tue, Sep 15, 2009 at 07:48:55AM -0300, Salatiel Filho wrote: > On Mon, Sep 14, 2009 at 18:10, Arno Wagner <arno@xxxxxxxxxxx> wrote: > > On Mon, Sep 14, 2009 at 06:25:10AM -0300, Salatiel Filho wrote: > >> On Mon, Sep 14, 2009 at 00:35, Arno Wagner <arno@xxxxxxxxxxx> wrote: > >> > On Sun, Sep 13, 2009 at 07:19:00PM -0300, Salatiel Filho wrote: > >> >> Where should i report that i get lots of corruption when using > >> >> cryptsetup on arm architecture ? > >> >> > >> >> - Can not use crypted swap , cause page allocator will fail and my > >> >> programs will start to seg fault. > >> >> - Some files just get corrupted on copying... > >> >> > >> >> Anyone can help me ?debug it , so i can report ?developers and they > >> >> can fix this. > >> > > >> > If it generally works, but sometimes corrupts, then this > >> > very likely has nothing to to with dm-crypt. In fact it > >> > sounds like you have defective hardware, but more detail > >> > is needed for even a rough guess. > >> > > >> I do not think ?it is a hardware problem since the disk is ?fine and > >> it works fine in other architectures with no corruption at all. And > >> the page allocator failure always happens when using crypted swap but > >> there is no problem when using uncrypted swap. > > > > Determine the exact nature of the corruption. It is really > > a waste of time to speculate before you have that. Best > > option is a binary compare of a corrupted file with the > > uncorrupted version. Use something like > > > > cmp -b -l <file1> <file2> > I tried two corrupted files ... > Attached the cmp -b -l 'corrupted' 'ok' : > > -rw-r--r-- 1 root root 50000000 2009-09-15 07:04 file1.ori > -rw-r--r-- 1 root root 50000000 2009-09-15 06:21 file1.corrupted > > -rw-r--r-- 1 root root 50000000 2009-09-15 07:04 file2.ori > -rw-r--r-- 1 root root 50000000 2009-09-15 06:22 file2.corrupted Ok, at a guess (assuming quite a bit of zeros in the non-corrupted files), this looks like full sectors are written with zeros instead of the data they should hold. This leaves out simple memory or other hardware corruption. I would be inclined to assume this is a software problem now. Arno -- Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno@xxxxxxxxxxx GnuPG: ID: 1E25338F FP: 0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F ---- Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans If it's in the news, don't worry about it. The very definition of "news" is "something that hardly ever happens." -- Bruce Schneier _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
