Re: [9fans] Fossil questions

["Tharaneedharan Vilwanathan" <dharani@lucent.com>]

Hi,

I was also wondering what happens in this kind of situatation (i.e. when one
forgets the fingerprint value). This utility very useful.

The other question I had is what happens if I terminate a vac command
abruptly? Is it that the blocks (that are written till that time) are there
somewhere permanently but one cannot get them out? Or is it that some level
of clean up is done?

Regards
dharani

> Thanks for your help, Russ. That worked nicely.
>
> John Packer
>
>
> On Tuesday, January 28, 2003, at 09:02  PM, Russ Cox wrote:
>
> >> Suppose I didn't have a score at all. Is there some way to
> >> recover the most recent score, perhaps from the venti server?
> >
> > Yes.  Since the data is not encrypted, if you have access to
> > the raw disk partitions storing the arenas, you can find
> > anything you want.
> >
> >> Also, though it's no big loss, is everything stored on Venti
> >> in the last two days inaccessible?
> >
> > Do a pull to get the new file /sys/src/cmd/venti/printarena.c
> > and then
> >
> > cd /sys/src/cmd/venti
> > mk 8.printarena
> >
> > Then, run this on the Venti server as the host owner:
> >
> > cd /sys/src/cmd/venti
> > ventihttp=your-server:8000
> > hget http://$ventihttp/index |
> > awk '
> >  /^index=/ { blockSize=0+substr($3, 11); }
> >  /^arena=/ { arena=substr($1, 7); }
> >  /^ arena=/ { start=0+substr($5, 2)-blockSize; printf("./8.printarena
> > -o %d %s\n", start, $3); }' |
> > rc |
> > sed -n 's/^(.*) 1$/vac:\1/p'
> >
> > to get a list of all the vac archives on the server.
> >
> > Russ
>