Comment # 7 on bug 1068707 from Coly Li

(In reply to Coly Li from comment #6)
> (In reply to Ruediger Oertel from comment #5)
> > hm, different error message but still does not work:
> > 
> > s390p21:~ # echo /dev/zram0 > /sys/fs/bcache/register
> > -bash: echo: write error: Invalid argument
> > 
> > [4830275.525506] zram: Added device: zram0
> > [4830291.485844] zram0: detected capacity change from 0 to 8589934592
> > [4830321.315018] bcache: register_bcache() error opening /dev/dm-2: Bad
> > checksum
> > [4830328.502621] bcache: register_bcache() error opening /dev/zram0: Bad
> > checksum

Thanks for the information, I see why the checksum is bad. There is a bug in
bcache kernel code, it checks csum before swap all necessary members of bcache
super block.

I will post a kernel fix, once it gets merged into SLE kernels, let's try it
again.

Coly Li