low end linux
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From: Jasen Betts on 25 Jan 2010 04:36 On 2010-01-24, philo <philo(a)privacy.net> wrote: >> http://www.ltsp.org/ >> > > I am sure that would work > but the logistics would be too difficult... > > the machines will be spread out over a 4 story office building. > > Either a wired or a wireless setup would be impractical are they going to surf the net using dialup? LTSP works well. --- news://freenews.netfront.net/ - complaints: news(a)netfront.net ---
From: Moe Trin on 26 Jan 2010 14:54 On Tue, 26 Jan 2010, in the Usenet newsgroup alt.os.linux, in article <m0vrl5d38j26glkm0l5hhr68s6dsl20aet(a)4ax.com>, Grant wrote: >(Moe Trin) wrote: >>I'm not the file system expert, but I know it was rejected by our >>company evaluators. The problems they were concerned with was the >>demonstrated lack of recoverability in certain conditions. I've also >>heard much anecdotal evidence from others. I've seen/heard reports >>that XFS is better in that regard. On the other hand, my home systems >>are mainly ext3, and I can't say that I've run into problems with it. >Yes, ext3 can be recovered, say goodbye to data on a corrupted >reiserfs3 FS. _real_ horror stories about that. >OTOH reiserfs resize grow and shrink work reliably, and the FS has >very good tolerance for unexpected powerfail (no UPS here), but no >data loss due to powerfail aver several years. Resize isn't a requirement here - we basically allocate fixed sized partitions, and if that no longer works, it's a backup, re-partition and restore (or simply move to another disk/partition/server). As for UPS, policy says servers have UPS, and critical stuff has backup generators that should (yeah, I know) be up to speed within four minutes max. UPS with an automatic shutdown capability isn't that big of an expense - my last (new) UPS at home was ~US$120 for 1KVA and it's running five systems on a master/slave control. Even the old UPC (obtained by dumpster-diving with a cost of new batteries and a serial cable) was pretty cheap insurance. >I switched to reiserfs3 back years ago when ext3 was locking up on a >box here, no problems with it since[1], and I like the replay on >mount concept far better than ext3's slow fsck. Uptime doesn't show it because of new kernels, but I try to keep the home systems running all the time. At work, we try to avoid power downs, and there is some protection because the workstations (which don't have a UPS) are all network file systems on servers that most definately are on UPS (as are the routers and switches). >XFS is supposed to be very good on quality hardware, but it >requires UPS for reliability as much FS 'state' is held in memory >to gain the performance. I've not used it though. We learned our lesson over 20 years ago when the city gave us a demonstration of "back-hoe" fade of supposedly redundent 13 KV powerlines. The sparks were entertaining (and no one was hurt) but power went up/down/up/down fairly rapidly, and we not only lost a shed-load of Sun (Sony and Phillips) monitors, but also lost a number of systems that apparently didn't stop trying to write to disk merely because power was failing. We had some systems take over ten hours to fsck a disk, and some of the servers had a many as six (SCSI) disks hanging off a single controller. We were lucky, because the tapes were good. It just took a long time to get everything running again. Oh, and the big Caterpillar diesel generator... nah, I'm sure you can guess about that. Old guy
From: philo on 26 Jan 2010 18:33 Jasen Betts wrote: > On 2010-01-24, philo <philo(a)privacy.net> wrote: > >>> http://www.ltsp.org/ >>> >> I am sure that would work >> but the logistics would be too difficult... >> >> the machines will be spread out over a 4 story office building. >> >> Either a wired or a wireless setup would be impractical > > are they going to surf the net using dialup? > > LTSP works well. > > No dialup anyway I brought in two machines today and I'll see how it goes
From: Tomas Pedersen on 28 Jan 2010 11:04 On Sun, 24 Jan 2010 10:39:11 -0600, philo wrote: > > the machines will be spread out over a 4 story office building. > > Either a wired or a wireless setup would be impractical How do you get them on the internet if they are not connected in a LAN? Tomas
From: J G Miller on 28 Jan 2010 11:50
On Thu, 28 Jan 2010 16:04:29 +0000, Tomas Pedersen wrote: > How do you get them on the internet if they are not connected in a LAN? Dial-up with a serial modem and PPP is one possibility. An X.25 card and a leased line is another possibility ;) |