On Thu, May 28, 2015 at 10:59:52AM +0000, Antti Kantee wrote: > On 28/05/15 10:30, Patrick Welche wrote: > >I'm having an entertaining time trying to debug vnd by running vnconfig > >against a rump kernel. It seems that my HIJACK incantation of a year ago: > > > > export RUMPHIJACK=path=/rump,blanket=/dev/vnd:/dev/rvnd > > > >no longer works. The problem seems to be because vnconfig does > > > >opendisk() want vnd0 -> rump's /dev/rvnd0d > >open() want e.g. /tmp/foo.img (works if add /tmp/foo.img to blanket) > > in vnconfig vnd0 /tmp/foo.img case > >ioctl() usually does run rump's vndioctl if we get that far > > You need to vnconfig /rump/tmp/foo.img, not /tmp/foo.img.
OK, trying again with export RUMP_SERVER=unix:///tmp/sock export RUMPHIJACK=path=/rump,blanket=/dev/vnd:/dev/rvnd export RUMPHIJACK_RETRYCONNECT=inftime export LD_PRELOAD=/usr/lib/librumphijack.so $ dd if=/dev/zero of=/rump/tmp/foo.img count=12000 12000+0 records in 12000+0 records out 6144000 bytes transferred in 27.818 secs (220864 bytes/sec) $ ls -lh /rump/tmp total 5.9M -rw-r--r-- 1 root wheel 5.9M May 28 20:47 foo.img $ vnconfig -l vnd0: not in use vnd1: not in use vnd2: not in use vnd3: not in use $ vnconfig vnd0 /rump/tmp/foo.img vnconfig: /dev/rvnd0d: VNDIOCSET: No such file or directory > >To try to avoid needing to solve the correct RUMPHIJACK incantation, I just > >tried building a > > > >RUMPPRG= vnconfig ... > That looks like a missing prog_init(). Indeed - thanks! And then I get stuck down that avenue as NetBSD gdb can't cope with pthread_sigmask as per PR bin/49662, so it seems that HIJACK incantation is the only way forward... (or linux gdb I suppose) Cheers, Patrick
