Comments for Richard WM Jones

Comment on QEMU ssh block device by rich

rich — Tue, 21 May 2013 09:38:50 +0000

Sure, but setting up iSCSI is a pain in the ass. Even NFS isn’t easy, when you consider all the business with opening firewall ports.

Most Linux servers have sshd running already, so ssh access is effectively zero configuration.

But, horses for courses. libguestfs also supports NFS, iSCSI, NBD, HTTP, etc so you’ve got lots of choices.

Comment on QEMU ssh block device by matorola

matorola — Tue, 21 May 2013 09:27:55 +0000

Richard, sorry to bother you with this question, but I didn’t get it… What is the “use case” of qemu remote disk over ssh ? I mean if you want remote disk, you can use/mount remote NFS / ISCSI and use it, why someone will want to use ssh to access disks? Thanks!

Comment on Fedora 19 virtualization test day 2013-05-28 by rich

rich — Fri, 17 May 2013 21:05:04 +0000

I should have also said .. Adventurous people can try running make check in the libguestfs source tree. Insane ones can try make extra-tests ...

Comment on Fedora 19 virtualization test day 2013-05-28 by kashyapc

kashyapc — Fri, 17 May 2013 20:54:39 +0000

“Every day is libguestfs test day” <– that made me smile

Comment on Petabytes? Exabytes? Why not by Testing exabyte-sized filesystems using qcow2 and guestfish | Richard WM Jones

Mon, 13 May 2013 10:53:19 +0000

[…] Previously … […]

Comment on Using libguestfs over HTTP (and FTP) by Conrad

Conrad — Sat, 11 May 2013 22:47:55 +0000

Sadly, there are “security” middleboxes acting as semi-transparent proxies that stomp on byte-ranges. My employer uses one of these. I found out by trying to use aria2c to grab Fedora install disks =).

Comment on Using libguestfs over HTTP (and FTP) by rich

rich — Sat, 11 May 2013 20:47:40 +0000

Probably. It's implemented using curl, so it does whatever curl does. Is there a web server which doesn't implement byte ranges?

Comment on Using libguestfs over HTTP (and FTP) by Conrad

Conrad — Sat, 11 May 2013 20:38:57 +0000

Presumably, this only works well on HTTP servers that support byte range queries?

Comment on Tip: Convert a Windows DVD ISO to a bootable USB key using guestfish by rich

rich — Fri, 10 May 2013 14:30:28 +0000

Because we do. This is covered in the documentation. I don't think it's confusing, and it's not dangerous because nothing bad happens if you get them wrong. Edit: In libguestfs ≥ 1.20 you can use named disks instead if you really want.

Comment on Tip: Convert a Windows DVD ISO to a bootable USB key using guestfish by Pavel Roskin

Pavel Roskin — Fri, 10 May 2013 14:13:49 +0000

Why use names like /dev/sda for virtual disks? It’s confusing and dangerous. Why not use unique names?

Comment on A beginners guide to OCaml internals by malloc() is the new gensym() | Syntax!

malloc() is the new gensym() | Syntax! — Sat, 04 May 2013 15:15:48 +0000

[...] A few warnings first: in OCaml, the constructor must have arguments, otherwise the compiler optimizes the representation to a simple integer and nothing is allocated. Also, don’t replace the argument x to C by a constant, say (), in the function code: if you do so, the compiler will place value C () in the data segment of the program, and calling gensym will not trigger an allocation either. There is an excellent and already classic series of blog post about OCaml’s value representation here. [...]

Comment on JONESFORTH git repository by rich

rich — Fri, 26 Apr 2013 15:16:24 +0000

Thanks — I wonder what changed. Note that we do assume the text starts at address zero.

Comment on JONESFORTH git repository by Luke

Luke — Fri, 26 Apr 2013 14:12:22 +0000

Excellent tutorial!
I had some trouble running this, but once I followed the comment by Arto Bendiken posted at http://subvert-the-dominant-paradigm.net/blog/?p=54, “make test” works fine.
“Note that if you attempt to run this on recent versions of Linux and the program simply aborts and prints out “Killed”, you will need to recompile without the “-Wl,-Ttext,0″ option to GCC.”

Comment on Amazon (or just “online ordering”) rant by Tim

Tim — Wed, 24 Apr 2013 06:59:36 +0000

Memory / flash from crucial direct are very reliable and the crucial store is definitely not annoying.

Comment on Amazon (or just “online ordering”) rant by Andy

Andy — Wed, 24 Apr 2013 05:10:30 +0000

For cables, I’ve never gone wrong with monoprice.com. (I’m not affiliated with them in any way.) And yes, I’ve purchased plenty of crappy cables from other vendors.

Comment on JONESFORTH git repository by James Larson

James Larson — Wed, 24 Apr 2013 02:18:00 +0000

Ok, Forth Fans:
http://www.dst-corp.com/james/JonesForthInC-V148.html
This isn’t the finished version, but something I hope will generate some buzz.

Comment on Amazon (or just “online ordering”) rant by Jie

Jie — Tue, 23 Apr 2013 22:37:43 +0000

Have you checked out monoprice.com for cables? I’ve bought many from them.

Comment on JONESFORTH git repository by rich

rich — Tue, 23 Apr 2013 18:12:04 +0000

I’d say just go ahead and publish. It’s public domain after all — designed to be distributed with the least friction possible.

Comment on JONESFORTH git repository by James Larson

James Larson — Tue, 23 Apr 2013 17:42:42 +0000

I suppose I should have been more specific about what I thought Rich might want to review. Specifically, his tutorial prose has been significantly edited and so I wanted Rich to have an opportunity to see those changes before publication. I am still in the process of making the system more ANS compliant, so I’m not yet ready to publish. However, if anyone would like an advance copy, please drop me a note: mailto:jlarson43@juno.com

Comment on Using rsync with libguestfs by rich

rich — Tue, 23 Apr 2013 06:52:51 +0000

Unfortunately the crappy qemu user networking that we have to use doesn't allow incoming connections. To allow those would mean we have to run the appliance as root (not very sensible) or have some "fun" interactions with libvirt.