Re: [9fans] fossil file system corrupts after a power cut
On Jul 26, 3:55 pm, 0in...@gmail.com (David du Colombier) wrote: fossil/flfmt -v da39a3ee5e6b4b0d3255bfef95601890afd80709 /dev/sdC0/fossil fatal error: corrupted root: vtRootUnpack This Venti score is wrong. This is the Venti score returned by an empty Fossil file system. That's why it cannot be found in Venti. /boot/fossil: cacheLocalData: addr=1 type got 0 exp 8: tag got 0 exp 1 /boot/fossil: fsOpen error fsOpen: block label mismatch fsys main The type VtDataType was returned instead of VtDirType and the tag BadTag was returned instead of RootTag. Obviously, something got wrong. It looks like your virtual hard disk image was corrupted because of the the power outage. Especially since you used the dynamically-growing qcow2 image format. You should make another hard disk image and rebuild Fossil from your last Venti score. Since this score cannot be found in your Fossil super block, you should extract a list of your Vac scores from your Venti server with the script /sys/src/cmd/venti/words/dumpvacroots. -- David du Colombier Thank you David du Colombier, it works. I can now use the most recent score produced by dumpvacroots to restore the active and archive data in a new qemu image. But the original 9fat partition still keeps in the old qcow2 image.
[9fans] Ken Thompson page
Hello, I just wanted the article about security and the self-referencing compiler from Ken. http://cm.bell-labs.com/who/ken/trust.html errstr: '/usr/web/who/ken' does not exist And the Wayback Machine from archive.org does not have it due to robots.txt Is this normal and expected by the site owners? Thank you, Lluís
Re: [9fans] fossil file system corrupts after a power cut
On 27/07/2011 10:39, kin loo wrote: Thank you David du Colombier, it works. I can now use the most recent score produced by dumpvacroots to restore the active and archive data in a new qemu image. But the original 9fat partition still keeps in the old qcow2 image. Maybe you can copy this qcow2 image and then play on the copy to reformat the fossil partition. Nicolas
Re: [9fans] Ken Thompson page
works for me. 2011/7/27 Lluís Batlle i Rossell virik...@gmail.com: Hello, I just wanted the article about security and the self-referencing compiler from Ken. http://cm.bell-labs.com/who/ken/trust.html errstr: '/usr/web/who/ken' does not exist And the Wayback Machine from archive.org does not have it due to robots.txt Is this normal and expected by the site owners? Thank you, Lluís
Re: [9fans] Ken Thompson page
On Wed, Jul 27, 2011 at 10:49:03AM -0300, Iruatã Souza wrote: works for me. Right. Now it works for me too. 2011/7/27 Lluís Batlle i Rossell virik...@gmail.com: http://cm.bell-labs.com/who/ken/trust.html errstr: '/usr/web/who/ken' does not exist
Re: [9fans] fossil file system corrupts after a power cut
On Wed, Jul 27, 2011 at 5:39 AM, kin loo kinlo...@gmail.com wrote: On Jul 26, 3:55 pm, 0in...@gmail.com (David du Colombier) wrote: fossil/flfmt -v da39a3ee5e6b4b0d3255bfef95601890afd80709 /dev/sdC0/fossil fatal error: corrupted root: vtRootUnpack This Venti score is wrong. This is the Venti score returned by an empty Fossil file system. That's why it cannot be found in Venti. /boot/fossil: cacheLocalData: addr=1 type got 0 exp 8: tag got 0 exp 1 /boot/fossil: fsOpen error fsOpen: block label mismatch fsys main The type VtDataType was returned instead of VtDirType and the tag BadTag was returned instead of RootTag. Obviously, something got wrong. It looks like your virtual hard disk image was corrupted because of the the power outage. Especially since you used the dynamically-growing qcow2 image format. You should make another hard disk image and rebuild Fossil from your last Venti score. Since this score cannot be found in your Fossil super block, you should extract a list of your Vac scores from your Venti server with the script /sys/src/cmd/venti/words/dumpvacroots. -- David du Colombier Thank you David du Colombier, it works. I can now use the most recent score produced by dumpvacroots to restore the active and archive data in a new qemu image. But the original 9fat partition still keeps in the old qcow2 image. If you want the old 9fat, you can try converting the qcow2 to raw format and mounting new image as fat in the host operating system.
[9fans] encrypting 9P traffic
I'm preparing to go to Defcon next week, and to help avoid getting owned I'm planning to bring along a Plan 9 laptop. I'd like to be able to mount, say, my home fileserver while I'm there, but 9P traffic goes out unencrypted if you use srv rather than import -E ssl. This got me to fiddling with tlssrvtunnel and tlsclienttunnel, but I've run into some problems: (gozer is the cpu server, x61 is the terminal) gozer% tlssrvtunnel tcp!gozer!564 tcp!*!12345 cert.pem # I created cert.pem using auth/rsagen, rsa2x509, and pemencode listen started gozer% # I did sha1sum of cert.pem and, on the client side, created thumb containing x509 sha1=hash cn=*.myauthdomain where myauthdomain is the same domain I used to create the cert x61% tlsclienttunnel tcp!gozer!12345 tcp!*!564 thumb x61% srv net!x61!564 x61 x61% mount /srv/x61 /n/x61 mount: mount /n/x61: EOF receiving fversion reply I can't seem to find any mention of these programs in 9fans except for the initial announcement of their creation. Did I do something wrong along the way? I'm not very familiar with TLS so it's definitely possible. On a more general note, I've decided that probably the smartest option will be to import -E ssl myhomesystem /net (because after 9 years, import still doesn't support TLS or SSL v3) so I can essentially tunnel all communication out that way... I'll have to use the open wifi, since Plan 9 doesn't do WPA, and I wouldn't trust Defcon's WPA network either in any case. Can anyone think of a problem with this plan, besides the fact that anyone sniffing packets will figure out that the owner of jfloren.net is quite probably in attendance? John
Re: [9fans] encrypting 9P traffic
Shouldn't import and srv just default to tls?
Re: [9fans] encrypting 9P traffic
On Wed, Jul 27, 2011 at 4:49 PM, Lyndon Nerenberg lyn...@orthanc.ca wrote: Shouldn't import and srv just default to tls? x61% import -E tls gozer / /n/gozer import: gozer: tls has not yet been implemented As far as I can tell, srv doesn't even have an encryption option. Do a 9fs gozer, fire up snoopy, and start reading some files--you'll see the plaintext of the files (and all the rest of the 9p messages) whizzing past. John
Re: [9fans] encrypting 9P traffic
On Wed Jul 27 19:52:55 EDT 2011, j...@jfloren.net wrote: On Wed, Jul 27, 2011 at 4:49 PM, Lyndon Nerenberg lyn...@orthanc.ca wrote: Shouldn't import and srv just default to tls? x61% import -E tls gozer / /n/gozer import: gozer: tls has not yet been implemented As far as I can tell, srv doesn't even have an encryption option. Do a 9fs gozer, fire up snoopy, and start reading some files--you'll see the plaintext of the files (and all the rest of the 9p messages) whizzing past. this works for me. i've been using it for years. ; import -k 'user=hostowner' -E ssl minooka.coraid.com / /n/coraid ; echo bind /net/ether0/n/coraid/dev/aoe/ctl # ouch - erik
Re: [9fans] encrypting 9P traffic
On Wed Jul 27 19:50:05 EDT 2011, lyn...@orthanc.ca wrote: Shouldn't import and srv just default to tls? import, yes*. srv, no. - erik --- * thanks to its undocumented** protocol for negotiating encryption, etc. --- ** unless you count documentation like hardware vendors do. read the source code.
Re: [9fans] encrypting 9P traffic
On Wed, Jul 27, 2011 at 6:27 PM, erik quanstrom quans...@quanstro.net wrote: On Wed Jul 27 19:50:05 EDT 2011, lyn...@orthanc.ca wrote: Shouldn't import and srv just default to tls? import, yes*. srv, no. - erik --- * thanks to its undocumented** protocol for negotiating encryption, etc. --- ** unless you count documentation like hardware vendors do. read the source code. Import defaults to unencrypted, at least for me. Import and srv *should* default to TLS but it's not implemented. SSL is implemented for import but it's not the default. John
[9fans] laptops T60/T61
A couple of laptops have come available (modes T60 and T61's). Ron noted that he got all but the wifi working on a T61, but the T60 comes with more ram and larger drive. Searching the net I see a couple of people asking, circa 2007, if anyone has gotten the T60's video drivers working, but I have not found any responses. So, I thought I would ask again before buying one of these machines. EBo --
