Re: Bcache hangs with Debian 7 (Wheezy), sync does not come back

[Kent Overstreet <kmo-PEzghdH756F8UrSeD/g0lQ@public.gmane.org>]

On Tue, Sep 17, 2013 at 10:23:07AM +0000, Hubert Kempkensteffen wrote:
> Kent Overstreet <kmo@...> writes:
> 
> > 
> > On Mon, Sep 16, 2013 at 01:07:49PM +0000, Hubert Kempkensteffen wrote:
> > > Sorry for my English.
> > > But my Bcache depends on if I have many  Copy files.
> > > I have tested it on two computers with me and
> > > i have the problem with kernel 3.10.10, 3.10.11,3.10.12,3.11 and 3.11.1.
> > > 
> > > My Bcache-Tools are from git:
> > > git clone http://evilpiepirate.org/git/bcache-tools.git
> > > cd bcache-tools
> > > make
> > > make install
> > > 
> > > My Test:
> > > ||make-bcache -C /dev/sda4 -B /dev/sdb1
> > > mkfs.ext4 -L Data /dev/bcache0
> > > mkdir x
> > > mount /dev/bcache0 x
> > > rsync -avr --progress --delete /usr/src ./x/
> > > sync
> > > 
> > > First, rsync copies the files very quickly then to be getting slower,
> > > that goes to halt!
> > > I give in another console "sync" here, not the command returns.
> > > I can take the computer will not reboot with "init 6".
> > 
> > Hey - thanks for narrowing it down to those kernels - that helps a
> > _lot_.
> > 
> > Can you tell me what else is in your setup? Are you using LVM or md?
> > 
> Hello and thanks for the quick reply :-),
> i use either LVM or software RAID. The computer boot from /dev/sda1
> and there is even a Corsair neutron and the other built a times a
> Samsung 840 per.

Are you saying you've tested it both with and without software raid?
Which kind of raid (raid 1, 10, 5, etc.)?

I think this bug requires something else in the stack to trigger, I'm
trying to figure out what the common factor is.