Re: [lopsa-tech] C coding

2010-10-09 Thread Phil Pennock
On 2010-10-08 at 08:07 -0700, Andrew Hume wrote: now i would have just said hour = t/(3600 * 1000); // remember t is in milliseconds // if i wanted hr in 00..23 range: hour = hour%24; bill said xx = t/1000 strncpy(hr_str, (ctime(xx)[11]), 2);

Re: [lopsa-tech] The FPGA and the NFS mount: A tale of bursty writes

2010-09-26 Thread Phil Pennock
On 2010-09-25 at 02:03 -0500, Brad Knowles wrote: Yup. The mmap() system call on NFS is undefined, which means that Berkeley DB, and any other software that uses mmap() cannot safely be used on NFS. This is supposedly fixed in the latest versions of NFS, but I have yet to have that claim

Re: [lopsa-tech] Compression Algorithms

2010-06-29 Thread Phil Pennock
On 2010-06-29 at 17:14 -0400, Edward Ned Harvey wrote: Using default settings, 7-zip lzma are much slower than bzip2. However, if you specify --fast, then lzma is both 2x faster and 2x stronger than any level of bzip2, which IMHO obsoletes bzip2. I noticed my LZO results were screwed up.

Re: [lopsa-tech] iSCSI HBA

2010-06-28 Thread Phil Pennock
On 2010-06-28 at 12:26 -0700, Brent Chapman wrote: Everybody says but what if the switch somehow leaks packets from one VLAN to another? Well, what if the switch ACLs didn't work, and passed traffic that it shouldn't? Those would both be major security bugs, drawing a quick response from the

Re: [lopsa-tech] Anybody with a netapp?

2010-04-23 Thread Phil Pennock
On 2010-04-23 at 08:15 -0400, Edward Ned Harvey wrote: I was concluding precisely the opposite. Namely: To have the .snapshot directory in every directory is nice and convenient for user access, but if a user can mv some directory and suddenly it's not being backed up anymore, not included

Re: [lopsa-tech] Backing up sparse files ... VM's and TrueCrypt ... etc

2010-02-19 Thread Phil Pennock
On 2010-02-18 at 22:10 -0600, Brad Knowles wrote: On Feb 18, 2010, at 8:43 PM, Edward Ned Harvey wrote: The ultimate goal is to have the job completed quickly. But that can only be done if the number of blocks sent is minimized. Presently, rsync reads the whole local file, and also

Re: [lopsa-tech] IPv6 on OS X

2010-02-17 Thread Phil Pennock
On 2010-02-17 at 22:44 +, Colm Buckley wrote: So, I've been learning all about IPv6; lots of good stuff. Got myself a SixXS tunnel, set up a routable subnet, set up radvd, configured DNS... everything works great. Slight strangeness with the OS X laptops, though - they seem to neither

Re: [lopsa-tech] Platform bashing (was Re: Email naming convention)

2009-10-26 Thread Phil Pennock
On 2009-10-26 at 19:41 -0700, Robert Hajime Lanning wrote: DNS can very easily not work. You just need every site managing their own, while not listening to the One Who Knows DNS TM. You should see the horrible mess some zone files are. Wait, you mean those people actually updated DNS? Oh

Re: [lopsa-tech] Email naming convention

2009-10-23 Thread Phil Pennock
On 2009-10-23 at 20:12 -0600, Jan L. Peterson wrote: On Fri, 2009-10-23 at 22:00 -0400, Edward Ned Harvey wrote: you could do most of this today with plus addressing like david+catch...@lang.hm How? I don't know of any option in exchange or gmail to enable such a feature.

Re: [lopsa-tech] auto outbound ssh from windows

2009-10-11 Thread Phil Pennock
On 2009-10-11 at 23:41 -0400, Edward Ned Harvey wrote: In openvpn, each individual client gets a private key or a private certificate. If that key or cert were acquired by anyone other than the intended end user, it would be possible for someone unauthorized to get in. Basically, this is a

Re: [lopsa-tech] Swap sizing in Linux HPC cluster nodes.

2009-09-04 Thread Phil Pennock
On 2009-09-04 at 12:27 -0700, da...@lang.hm wrote: for historical reasons (since it used to be the limit on swap partition size), I have fallen in the habit of creating a 2G swap partition on all my systems. If I was going to change it I would probably shrink it down (by the time a system

Re: [lopsa-tech] shared network disks - vs gfs - vs distributed filesystem - vs ...

2009-07-02 Thread Phil Pennock
On 2009-07-02 at 11:31 -0400, Edward Ned Harvey wrote: Until today, I only had one idea which came close - google gfs (not global gfs) does exactly what I want except that it always writes to 3 or more peers. If google gfs is available for use (can install and be used on linux) and if it's

Re: [lopsa-tech] Any SCO MMDF gurus on the list?

2009-01-10 Thread Phil Pennock
On 2009-01-10 at 22:48 -0500, John BORIS wrote: Thanks. No we didn't fill any disks. I have about 18 messages hung on each of the 20 servers. I am about to just delete all of them and restart things. I did a restart of the mmdf sctipts but that didn't help. In the past the main relay server

Re: [lopsa-tech] Vuln: OpenSSL DSA/ECDSA server checks invalid

2009-01-07 Thread Phil Pennock
On 2009-01-07 at 11:05 -0800, Phil Pennock wrote: The new hole above looks as though it's useful for a direct man-in-the-middle, but for as long as you accept certificates where a path in the trust chain uses MD5 signatures you're also up a dark creek without a paddle. Expecting users

[lopsa-tech] SOHO Wireless AP recommendations revisited

2008-11-09 Thread Phil Pennock
Back in 2006, Hal Pomeranz asked for SOHO wifi AP recommendations. I'd like to re-open the topic, asking for recommendations for 2008/2009, off-list and I'll summarise. Requirements: * no client OS dependencies for configuration (see below) * WPA2 PSK personal, more better * IPv6 router, 6to4