Re: djb and multiple IPs
On Wed, 27 Nov 2002 00:51, Craig Sanders wrote: > actually, that's something that could be built into nsd - if it is > authoritative for a given request then answer it, otherwise proxy it to > a recursive server. Good idea! Another option for ISPs is to use NAT to direct queries that come from customer IP addresses to the recursive server. But that won't work for everyone. -- http://www.coker.com.au/selinux/ My NSA Security Enhanced Linux packages http://www.coker.com.au/bonnie++/ Bonnie++ hard drive benchmark http://www.coker.com.au/postal/Postal SMTP/POP benchmark http://www.coker.com.au/~russell/ My home page -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: Re Lilo
On Wed, 2002-11-27 at 05:30, Brad Lay wrote: > I'm sure theres a debian-specific way, but this way works ;) Of course there is a debian-way of doing this ;o) man mkboot best regards -- Markus Oswald <[EMAIL PROTECTED]> \ Unix and Network Administration Graz, AUSTRIA \ High Availability / Cluster Mobile: +43 676 6485415\ System Consulting Fax:+43 316 428896 \ Web Development -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: SCSI or IDE
Hep On Mon, Nov 25, 2002 at 11:57:33AM +1300, Jones, Steven wrote: > u can get hot swap ide > > promise do one (hot swap ide), dunno how good it is mind. If you are thinking on this one -> http://www.promise.com/product/product_detail_eng.asp?productId=90&familyId=6 Dont buy it! It as simple as that. 1 year ago i bought one of those bastards from promise and its slooow. Im running it as filer on a debian 3.0 system filesystem xfs and i havent been able to push it to a sustain throughput on more than 3MB/sec. This is with 8 60GB IBM deskstar 7200rpm disks in raid5. Recently a disk crashed on me and the hole array went offline allthough the manual says it should continue to function. NOT TRUE! I relplace the broken drive with a new and the promisearray began to rebuild i thought i where homesafe. After rebuilding in 15 hours the array went offline again and nothing i did got it back?? I called localshop where i bought it nobody could help me they suggested that i contacted promise in netherlands. Story continues. Promise in netherlands where quit helpfull but what they suggested got me pulling out my hair!!! (what i have left of it). They suggested that i deletede the array, created a new and saved it then just after saving it i had to pull out the powercord in the back so the array wouldn't initialize. I would not belive what i was hearing. Pulling out powercord while the array is initializing sounds like a hugh hack to me but i did it just because i didnt knew what else to do. It actually worked so now im back to the good old slw promisearray and after a xfs_repair my filer was up and running again. Next time i have to buy ideraid ill try 3ware for sure. -- Venlig hilsen/Kind regards Thomas Kirk ARKENA thomas(at)arkena(dot)com Http://www.arkena.com BOFH excuse #283: Lawn mower blade in your fan need sharpening -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
RE: SCSI or IDE
http://www.promise.com/product/product_detail_eng.asp?productId=93&familyId= 7 i was actually looking at one of these. For my simpler needs, data protection is important but there isnt lots of it so 2 x 20 gig disks mirrored is heaps. I would like to keep the uptime up, so was thinking of this solution, anybody tried one? Its for my web server with all of a 128k connection so sucky performance isnt an issue as its bugger all hits. However for another job Im thinking of elsewhere (a 2 node cluster) though it would be a disaster. 3meg a sec just wont cut it, i can get 16 meg off a second hand scsi setup for the same dosh. Steven -Original Message- From: Thomas Kirk [mailto:[EMAIL PROTECTED]] Sent: Thursday, 28 November 2002 10:10 To: Jones, Steven Cc: 'John'; Scott; [EMAIL PROTECTED] Subject: Re: SCSI or IDE Hep On Mon, Nov 25, 2002 at 11:57:33AM +1300, Jones, Steven wrote: > u can get hot swap ide > > promise do one (hot swap ide), dunno how good it is mind. If you are thinking on this one -> http://www.promise.com/product/product_detail_eng.asp?productId=90&familyId= 6 Dont buy it! It as simple as that. 1 year ago i bought one of those bastards from promise and its slooow. Im running it as filer on a debian 3.0 system filesystem xfs and i havent been able to push it to a sustain throughput on more than 3MB/sec. This is with 8 60GB IBM deskstar 7200rpm disks in raid5. Recently a disk crashed on me and the hole array went offline allthough the manual says it should continue to function. NOT TRUE! I relplace the broken drive with a new and the promisearray began to rebuild i thought i where homesafe. After rebuilding in 15 hours the array went offline again and nothing i did got it back?? I called localshop where i bought it nobody could help me they suggested that i contacted promise in netherlands. Story continues. Promise in netherlands where quit helpfull but what they suggested got me pulling out my hair!!! (what i have left of it). They suggested that i deletede the array, created a new and saved it then just after saving it i had to pull out the powercord in the back so the array wouldn't initialize. I would not belive what i was hearing. Pulling out powercord while the array is initializing sounds like a hugh hack to me but i did it just because i didnt knew what else to do. It actually worked so now im back to the good old slw promisearray and after a xfs_repair my filer was up and running again. Next time i have to buy ideraid ill try 3ware for sure. -- Venlig hilsen/Kind regards Thomas Kirk ARKENA thomas(at)arkena(dot)com Http://www.arkena.com BOFH excuse #283: Lawn mower blade in your fan need sharpening -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: SCSI or IDE
- Original Message - From: "Jones, Steven" <[EMAIL PROTECTED]> To: "'Thomas Kirk'" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Wednesday, November 27, 2002 2:30 PM Subject: RE: SCSI or IDE > > http://www.promise.com/product/product_detail_eng.asp?productId=93&familyId= > 7 > > i was actually looking at one of these. > > For my simpler needs, data protection is important but there isnt lots of it > so 2 x 20 gig disks mirrored is heaps. I would like to keep the uptime up, > so was thinking of this solution, anybody tried one? Its for my web server > with all of a 128k connection so sucky performance isnt an issue as its > bugger all hits. > > However for another job Im thinking of elsewhere (a 2 node cluster) though > it would be a disaster. 3meg a sec just wont cut it, i can get 16 meg off a > second hand scsi setup for the same dosh. > > Steven ARCO Products are pretty good. I've used their first generation DupliDisk controller for some time. The only drawback with that version is that raid rebuilds must be done from a DOS boot disk. This has been fixed in the DupliDisk 2 product, it does background rebuilds now, and they have a hot swappable drive enclosure as well. http://www.arcoide.com/ That being said, the only reason I'm not using the IDE RAID is that I've switched to Ultra160 SCSI RAID on my newer systems. I've used both the Dell PERC and Mylex SCSI controllers, using RAID-1. IO performance is much better on the SCSI drives. I've also blown more IDE drives than SCSI over the years, especially on high load servers. Thats my $0.02 anyhow :) Sincerely, -- Kirk Ismay System Administrator -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: SCSI or IDE
On Wed, 27 Nov 2002 23:30, Jones, Steven wrote: > http://www.promise.com/product/product_detail_eng.asp?productId=93&familyId >= 7 > > i was actually looking at one of these. > > For my simpler needs, data protection is important but there isnt lots of > it so 2 x 20 gig disks mirrored is heaps. I would like to keep the uptime > up, so was thinking of this solution, anybody tried one? Its for my web > server with all of a 128k connection so sucky performance isnt an issue as > its bugger all hits. If you only need RAID-1 then software RAID is probably best. It's cheapest and provides much better performance than most hardware RAID's. Also if you only need 20G of storage then you still may want to consider 120G drives, they are much faster than 20G drives. > However for another job Im thinking of elsewhere (a 2 node cluster) though > it would be a disaster. 3meg a sec just wont cut it, i can get 16 meg off a > second hand scsi setup for the same dosh. You can get 40 meg from a software RAID-1 on IDE drives more easily and cheaply. -- http://www.coker.com.au/selinux/ My NSA Security Enhanced Linux packages http://www.coker.com.au/bonnie++/ Bonnie++ hard drive benchmark http://www.coker.com.au/postal/Postal SMTP/POP benchmark http://www.coker.com.au/~russell/ My home page -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
RE: SCSI or IDE
If you lose the primary boot disk on software raid its not bootable in my experience. I wouldnt use software raid for any prod box for this reason. I happen to have 2 x 20g sitting, and since I only need 2 gig ish max.. Steven -Original Message- From: Russell Coker [mailto:[EMAIL PROTECTED]] Sent: Thursday, 28 November 2002 1:35 To: Jones, Steven; 'Thomas Kirk' Cc: [EMAIL PROTECTED] Subject: Re: SCSI or IDE On Wed, 27 Nov 2002 23:30, Jones, Steven wrote: > http://www.promise.com/product/product_detail_eng.asp?productId=93&familyId >= 7 > > i was actually looking at one of these. > > For my simpler needs, data protection is important but there isnt lots of > it so 2 x 20 gig disks mirrored is heaps. I would like to keep the uptime > up, so was thinking of this solution, anybody tried one? Its for my web > server with all of a 128k connection so sucky performance isnt an issue as > its bugger all hits. If you only need RAID-1 then software RAID is probably best. It's cheapest and provides much better performance than most hardware RAID's. Also if you only need 20G of storage then you still may want to consider 120G drives, they are much faster than 20G drives. > However for another job Im thinking of elsewhere (a 2 node cluster) though > it would be a disaster. 3meg a sec just wont cut it, i can get 16 meg off a > second hand scsi setup for the same dosh. You can get 40 meg from a software RAID-1 on IDE drives more easily and cheaply. -- http://www.coker.com.au/selinux/ My NSA Security Enhanced Linux packages http://www.coker.com.au/bonnie++/ Bonnie++ hard drive benchmark http://www.coker.com.au/postal/Postal SMTP/POP benchmark http://www.coker.com.au/~russell/ My home page -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: SCSI or IDE
On Wed, Nov 27, 2002 at 10:09:48PM +0100, Thomas Kirk wrote: > Hep > > On Mon, Nov 25, 2002 at 11:57:33AM +1300, Jones, Steven wrote: [...] > If you are thinking on this one -> > http://www.promise.com/product/product_detail_eng.asp?productId=90&familyId=6 > > Dont buy it! It as simple as that. 1 year ago i bought one of those > bastards from promise and its slooow. Im running it as filer on a > debian 3.0 system filesystem xfs and i havent been able to push it to > a sustain throughput on more than 3MB/sec. This is with 8 60GB IBM deskstar > 7200rpm disks in raid5. Recently a disk crashed on me and the hole That sounds very crappy... I'm not familiar with this product and it's drivers. From the kernel side, does it look like IDE or something else? If it looks like IDE, are you actualy using UDMA? The Debian kernels default to off... check with; # hdparm /dev/hde and see if dma is on. I find it hard to believe that the performance could be that bad... there must be something else misconfigured. > array went offline allthough the manual says it should continue to > function. NOT TRUE! I relplace the broken drive with a new and the > promisearray began to rebuild i thought i where homesafe. After > rebuilding in 15 hours the array went offline again and nothing i did > got it back?? I called localshop where i bought it nobody could help > me they suggested that i contacted promise in netherlands. Story > continues. I have heard horror stories about IDE raid when discs actualy die. I think the problem is disks can die in almost-pretending-to-be-ok ways. Perhaps SCSI with it's more robust protocol is more likely to identify when disks die like this. However, the recovery problems sounds like something else dodgey... > Promise in netherlands where quit helpfull but what they suggested got > me pulling out my hair!!! (what i have left of it). They suggested > that i deletede the array, created a new and saved it then just after > saving it i had to pull out the powercord in the back so the array > wouldn't initialize. I would not belive what i was hearing. Pulling > out powercord while the array is initializing sounds like a hugh hack > to me but i did it just because i didnt knew what else to do. It > actually worked so now im back to the good old slw promisearray > and after a xfs_repair my filer was up and running again. At least it sounds like the guy knew what he was talking about... -- -- ABO: finger [EMAIL PROTECTED] for more info, including pgp key -- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: SCSI or IDE
> On Wed, 27 Nov 2002 23:30, Jones, Steven wrote: > > http://www.promise.com/product/product_detail_eng.asp?productId=93&familyI d > >= 7 > > > > i was actually looking at one of these. > > > > For my simpler needs, data protection is important but there isnt lots of > > it so 2 x 20 gig disks mirrored is heaps. I would like to keep the uptime > > up, so was thinking of this solution, anybody tried one? Its for my web > > server with all of a 128k connection so sucky performance isnt an issue as > > its bugger all hits. > > If you only need RAID-1 then software RAID is probably best. It's cheapest > and provides much better performance than most hardware RAID's. Also if you > only need 20G of storage then you still may want to consider 120G drives, > they are much faster than 20G drives. On the other hand... when I was experiementing with all this way back (like maybe 1-2 years ago... Russell was helping back them too ;-) ), I found that software RAID in some cases won't work properly if something has died... for example, from memory one of the hard disks failed. The BIOS stalled on that HD at POST and wouldn't continue normally. It didn't failover to the 2nd hard disk (this was RAID 1). A hardware RAID setup would be able to handle this as the hardware RAID solution would be designed to prevent such things from completely stalling the system and preventing startup. Of course, hardware RAID is not as flexible, and cheapo hardware RAID may not be much more intelligent than the motherboard's onboard IDE controller. But it's gotta have a least a bit more intelligence. > > However for another job Im thinking of elsewhere (a 2 node cluster) though > > it would be a disaster. 3meg a sec just wont cut it, i can get 16 meg off a > > second hand scsi setup for the same dosh. > > You can get 40 meg from a software RAID-1 on IDE drives more easily and > cheaply. Note that you probably won't be able to go above 2 HDs, as you certainly won't want to put more than 1 HD on per ... oh... per cable (whats the word... per port? per channel?). Putting more than 1 on lowers performance greatly, so you can forget about doing RAID 5. You COULD go buy a PCI IDE card, but then if you're going the hardware route you may as well get a hardware RAID card. Anyway, just my thoughts, as I've been in a similar situation. Software RAID is certainly more flexible and may be faster than some hardware IDE solutions, but it can fail under some situations. It's your own decisions, but once you do it, stick with it as it DEFINATELY is not fun to move these kind of things around ;-) Sincerely, Jason http://www.zentek-international.com/ -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
automated ppp testing
Is there a package out there that can monitor/test an ISP's connection (using PPP) on a regular basis? Just something that'll start a PPP connection, kill it immediately, and keep a log of it. Thanks, Tim -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: SCSI or IDE
Thomas Kirk [mailto:[EMAIL PROTECTED]] wrote: > > Hep > > On Mon, Nov 25, 2002 at 11:57:33AM +1300, Jones, Steven wrote: > > > u can get hot swap ide > > > > promise do one (hot swap ide), dunno how good it is mind. > > If you are thinking on this one -> > http://www.promise.com/product/product_detail_eng.asp?productI > d=90&familyId=6 > > Dont buy it! It as simple as that. 1 year ago i bought one of those > bastards from promise and its slooow. Im running it as filer on a > debian 3.0 system filesystem xfs and i havent been able to push it to > a sustain throughput on more than 3MB/sec. This is with 8 > 60GB IBM deskstar > 7200rpm disks in raid5. > [...] > Next time i have to buy ideraid ill try 3ware for sure. I have one ofe those thingies running our local samba server, raid 5 w/ 3+1 80 Gig 7200 IBM HDDs. Works flawlessly and fast. hdparm shows the following throughput: Timing buffer-cache reads: 128 MB in 0.87 seconds =147.13 MB/sec Timing buffered disk reads: 64 MB in 1.31 seconds = 48.85 MB/sec This is on a dual PIII/500 w/ 256 MB. Not the cheapest one, but it's actually worth it. Thomas -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
