Re: OS for RAID1
A posting on wellylug the other day appears to provide a solution to what I was ultimately looking to accomplish. It is via all packages installed rather than simply what's been installed since distro install: dpkg --get-selections dpkg-selections dpkg --set-selections dpkg-selections apt-get -u dselect-upgrade Cheers, Roger Nick Rout wrote: On Sat, Oct 18, 2008 at 4:03 PM, Roger Searle [EMAIL PROTECTED] wrote: Yes that sort of helps though gives me far more than actually I wanted, which I suspected would be a response so I'll rephrase my question in the way I nearly did earlier. Following performing some ubuntu installation where a pre-defined set of packages is installed for me, I then want to add a bunch of other stuff, most of which I'd do via sudo apt-get install programme1 programme2 etc on a few occasions. I would then be told I'd need a bigger bunch of dependencies, type y and away it would go. I'm looking for a listing of programme1, programme2 etc. Roger AFAIK apt-get does not keep such a record, whereas aptitude does.
Re: OS for RAID1 - Kbuntu - where is the raid option?
Yes of course. Cheers Don chris wrote: Hi Don, would I be able to get an iso of those disks from you please if I called in the next time I am in town? regards chris Thomas North canterbury On Mon, 2008-10-20 at 17:35 +1300, [EMAIL PROTECTED] wrote: Got my disks this afternoon. Following advise I've got the alternative kbuntu CD. When the disk set up option poped up there was an option for LVM set up but not raid. Where is the RAID set up? Do I have to install the base system first? Or was I meant to do a different install from the first menu? Anyone done raid on kb before? Cheers Don -- Don Gould 31 Acheson Ave, Mairehau, Christchurch, NZ Ph +64 3 348 7235 or + 64 21 114 0699 www.thinkdesignprint.co.nz
Re: OS for RAID1 - Kbuntu - where is the raid option?
Thanks Roger, The thread got quite long, I did skip back some of the posts but clearly missed that one. Sorry to be a PIA. Cheers Don Roger Searle wrote: my email on 15/10 was quickly created from doing such an install in a vm - while not up to the standard of a wiki article or for publication in a real book, i thought that it would be enough for someone to follow. here is what i wrote again: early in the installation process when you get to the disk partitioning stage, you do a manual partitioning, create your various disk partitions on the first disk, and format type is NOT ext3 (or what ever you'd choose) but physical volume for RAID. then set up the second disk with the same partition sizes. Before selecting finish partitioning and write changes to disk go to the configure software raid entry where you can create md device of RAID0, 1 or 5. This is where you join up the matching partitions from the 2 drives. at this point you can then select a RAID1 device and specify format type and mount point. from there the installation is like any other - you slowly make a cup of coffee and come back to your fresh distro. Cheers, Roger [EMAIL PROTECTED] wrote: Got my disks this afternoon. Following advise I've got the alternative kbuntu CD. When the disk set up option poped up there was an option for LVM set up but not raid. Where is the RAID set up? Do I have to install the base system first? Or was I meant to do a different install from the first menu? Anyone done raid on kb before? Cheers Don -- Don Gould 31 Acheson Ave, Mairehau, Christchurch, NZ Ph +64 3 348 7235 or + 64 21 114 0699 www.thinkdesignprint.co.nz
Re: OS for RAID1 - Kbuntu - where is the raid option?
by then, the next release - intrepid ibex (8:10) - will be out, due 30/10 which presumably means 31st here. No doubt there will be a few list members with a copy within a few hours. Cheers, Roger chris wrote: many thanks, Will be about 2 weeks I will email a couple of days before hand Regards Chris T On Mon, 2008-10-20 at 21:21 +1300, [EMAIL PROTECTED] wrote: Yes of course. Cheers Don chris wrote: Hi Don, would I be able to get an iso of those disks from you please if I called in the next time I am in town? regards chris Thomas North canterbury On Mon, 2008-10-20 at 17:35 +1300, [EMAIL PROTECTED] wrote: Got my disks this afternoon. Following advise I've got the alternative kbuntu CD. When the disk set up option poped up there was an option for LVM set up but not raid. Where is the RAID set up? Do I have to install the base system first? Or was I meant to do a different install from the first menu? Anyone done raid on kb before? Cheers Don
Re: OS for RAID1 - Kbuntu - where is the raid option?
On Tue, 21 Oct 2008 08:30:55 +1300 Roger Searle [EMAIL PROTECTED] wrote: by then, the next release - intrepid ibex (8:10) - will be out, due 30/10 which presumably means 31st here. No doubt there will be a few list members with a copy within a few hours. Cheers, Roger Don't forget though - for those building servers - 8.04 is an lts version. 8.10 isn't. Steve -- Steve Holdoway [EMAIL PROTECTED]
Re: OS for RAID1 - Kbuntu - where is the raid option?
Thank you Roger, I will keep that in mind. It can be difficult when you only have a modem connection and cannot get access to bb Regards chris T On Tue, 2008-10-21 at 08:30 +1300, Roger Searle wrote: by then, the next release - intrepid ibex (8:10) - will be out, due 30/10 which presumably means 31st here. No doubt there will be a few list members with a copy within a few hours. Cheers, Roger chris wrote: many thanks, Will be about 2 weeks I will email a couple of days before hand Regards Chris T On Mon, 2008-10-20 at 21:21 +1300, [EMAIL PROTECTED] wrote: Yes of course. Cheers Don chris wrote: Hi Don, would I be able to get an iso of those disks from you please if I called in the next time I am in town? regards chris Thomas North canterbury On Mon, 2008-10-20 at 17:35 +1300, [EMAIL PROTECTED] wrote: Got my disks this afternoon. Following advise I've got the alternative kbuntu CD. When the disk set up option poped up there was an option for LVM set up but not raid. Where is the RAID set up? Do I have to install the base system first? Or was I meant to do a different install from the first menu? Anyone done raid on kb before? Cheers Don
Re: OS for RAID1 - why would I only see 1 disk?
Ignore this... I found the answer. The BIOS in the HP shows the disk as being there but also has an option for the second controller to be disabled even though it shows the disk as being there. I got confused. Cheers Don [EMAIL PROTECTED] wrote: The installer only seems to see one disk - sda I've gone to console mode (alt-f2) and done # ls sd* sda is the only drive. The bios shows both disks ok. They're both the same model, that wouldn't cause any problem should it? Cheers Don -- Don Gould 31 Acheson Ave, Mairehau, Christchurch, NZ Ph +64 3 348 7235 or + 64 21 114 0699 www.thinkdesignprint.co.nz
Re: OS for RAID1 - Kbuntu - where is the raid option?
many thanks, Will be about 2 weeks I will email a couple of days before hand Regards Chris T On Mon, 2008-10-20 at 21:21 +1300, [EMAIL PROTECTED] wrote: Yes of course. Cheers Don chris wrote: Hi Don, would I be able to get an iso of those disks from you please if I called in the next time I am in town? regards chris Thomas North canterbury On Mon, 2008-10-20 at 17:35 +1300, [EMAIL PROTECTED] wrote: Got my disks this afternoon. Following advise I've got the alternative kbuntu CD. When the disk set up option poped up there was an option for LVM set up but not raid. Where is the RAID set up? Do I have to install the base system first? Or was I meant to do a different install from the first menu? Anyone done raid on kb before? Cheers Don
Re: OS for RAID1 - Kbuntu - where is the raid option?
Got my disks this afternoon. Following advise I've got the alternative kbuntu CD. When the disk set up option poped up there was an option for LVM set up but not raid. Where is the RAID set up? Do I have to install the base system first? Or was I meant to do a different install from the first menu? Anyone done raid on kb before? Cheers Don
Re: OS for RAID1 - Kbuntu - where is the raid option?
my email on 15/10 was quickly created from doing such an install in a vm - while not up to the standard of a wiki article or for publication in a real book, i thought that it would be enough for someone to follow. here is what i wrote again: early in the installation process when you get to the disk partitioning stage, you do a manual partitioning, create your various disk partitions on the first disk, and format type is NOT ext3 (or what ever you'd choose) but physical volume for RAID. then set up the second disk with the same partition sizes. Before selecting finish partitioning and write changes to disk go to the configure software raid entry where you can create md device of RAID0, 1 or 5. This is where you join up the matching partitions from the 2 drives. at this point you can then select a RAID1 device and specify format type and mount point. from there the installation is like any other - you slowly make a cup of coffee and come back to your fresh distro. Cheers, Roger [EMAIL PROTECTED] wrote: Got my disks this afternoon. Following advise I've got the alternative kbuntu CD. When the disk set up option poped up there was an option for LVM set up but not raid. Where is the RAID set up? Do I have to install the base system first? Or was I meant to do a different install from the first menu? Anyone done raid on kb before? Cheers Don
Re: OS for RAID1 - Kbuntu - where is the raid option?
Hi Don, would I be able to get an iso of those disks from you please if I called in the next time I am in town? regards chris Thomas North canterbury On Mon, 2008-10-20 at 17:35 +1300, [EMAIL PROTECTED] wrote: Got my disks this afternoon. Following advise I've got the alternative kbuntu CD. When the disk set up option poped up there was an option for LVM set up but not raid. Where is the RAID set up? Do I have to install the base system first? Or was I meant to do a different install from the first menu? Anyone done raid on kb before? Cheers Don
Re: OS for RAID1
On Sat, Oct 18, 2008 at 4:03 PM, Roger Searle [EMAIL PROTECTED] wrote: Yes that sort of helps though gives me far more than actually I wanted, which I suspected would be a response so I'll rephrase my question in the way I nearly did earlier. Following performing some ubuntu installation where a pre-defined set of packages is installed for me, I then want to add a bunch of other stuff, most of which I'd do via sudo apt-get install programme1 programme2 etc on a few occasions. I would then be told I'd need a bigger bunch of dependencies, type y and away it would go. I'm looking for a listing of programme1, programme2 etc. Roger AFAIK apt-get does not keep such a record, whereas aptitude does.
Re: OS for RAID1
Jim Cheetham wrote: On Wed, Oct 15, 2008 at 11:57 PM, [EMAIL PROTECTED] wrote: Well, you can restore the OS from an install CD easily enough, and as long as you've got a list of installed packages, you'll be good to go quickly enough. Now I recall mention of this in recent months where there is a method of extracting a list of currently installed packages, I can't seem to locate that wisdom. Could anyone describe the methods again? Cheers, Roger
Re: OS for RAID1
On Sat, 18 Oct 2008 06:50:03 +1300 Roger Searle [EMAIL PROTECTED] wrote: Jim Cheetham wrote: On Wed, Oct 15, 2008 at 11:57 PM, [EMAIL PROTECTED] wrote: Well, you can restore the OS from an install CD easily enough, and as long as you've got a list of installed packages, you'll be good to go quickly enough. Now I recall mention of this in recent months where there is a method of extracting a list of currently installed packages, I can't seem to locate that wisdom. Could anyone describe the methods again? Cheers, Roger dpkg -l | grep ii is a good start for debian/ubu rpm -a for rh'esque distrs. hth, Steve -- Steve Holdoway [EMAIL PROTECTED]
Re: OS for RAID1
Steve Holdoway wrote: On Sat, 18 Oct 2008 06:50:03 +1300 Roger Searle [EMAIL PROTECTED] wrote: Jim Cheetham wrote: On Wed, Oct 15, 2008 at 11:57 PM, [EMAIL PROTECTED] wrote: Well, you can restore the OS from an install CD easily enough, and as long as you've got a list of installed packages, you'll be good to go quickly enough. Now I recall mention of this in recent months where there is a method of extracting a list of currently installed packages, I can't seem to locate that wisdom. Could anyone describe the methods again? Cheers, Roger dpkg -l | grep ii is a good start for debian/ubu rpm -a for rh'esque distrs. hth, Steve Yes that sort of helps though gives me far more than actually I wanted, which I suspected would be a response so I'll rephrase my question in the way I nearly did earlier. Following performing some ubuntu installation where a pre-defined set of packages is installed for me, I then want to add a bunch of other stuff, most of which I'd do via sudo apt-get install programme1 programme2 etc on a few occasions. I would then be told I'd need a bigger bunch of dependencies, type y and away it would go. I'm looking for a listing of programme1, programme2 etc. Roger
Re: OS for RAID1 - The answer so far...
Don you seem to be missing the need for the ALTERNATE install disk to get raid running. Read the thread carefully. On Thu, Oct 16, 2008 at 5:51 PM, chris [EMAIL PROTECTED] wrote: also mdam is in the ubuntu repositories regards chris T On Thu, 2008-10-16 at 17:08 +1300, Roger Searle wrote: [EMAIL PROTECTED] wrote: Roger Searle wrote: http://www.networknewz.com/2003/0113.html (k)ubuntu alternate install also guides you through setting up raid (0, 1, 5). since i don't know anything about lenny, i can't comment on you saying grub needs to know about the disks - the process of setting up software raid (in kubuntu) takes care of all this for you, there is nothing to do there, move right along... Ok I might grab a copy of kubuntu then... or did you mean both k and g? kubuntu has kde desktop by default. g? no idea what that is. ubuntu has gnome. Does the archive have current copies of that? What version numbers am I looking for? 8.10 is due out any day - 8 = 2008, 10 = october. many of your other questions are answered when you click the link above. have fun, and please send updates on what you do, there are aspects of this that i haven't got my head around yet so will follow this thread looking for insights. I will... that's what I was doing, in posting that last message. I'd like to leave a paper trail so that the next person can find my notes and peoples responses. (There's nothing worse than seeing questions on a mailing list archive without ever there being answers!) Cheers Don
Re: OS for RAID1 - The answer so far...
you download the 'alternate' distro from the ubuntu site, not the desktop distro. check out here - noting the big blue word at the top 'beta', further down you will see alternate... http://releases.ubuntu.com/releases/kubuntu/8.10/ release date for 8.10 is 30th october. cheers, roger [EMAIL PROTECTED] wrote: Nick Rout wrote: Don you seem to be missing the need for the ALTERNATE install disk to get raid running. Read the thread carefully. You mean a third disk to boot from? Cheers Don
Re: OS for RAID1 - The answer so far...
Thanks guys, Ok that make sense now. I think I'll do that as there are lots of ubuntu ppl on list if I get stuck. Cheers Don Roger Searle wrote: you download the 'alternate' distro from the ubuntu site, not the desktop distro. check out here - noting the big blue word at the top 'beta', further down you will see alternate... http://releases.ubuntu.com/releases/kubuntu/8.10/ release date for 8.10 is 30th october. cheers, roger [EMAIL PROTECTED] wrote: Nick Rout wrote: Don you seem to be missing the need for the ALTERNATE install disk to get raid running. Read the thread carefully. You mean a third disk to boot from? Cheers Don -- Don Gould 31 Acheson Ave, Mairehau, Christchurch, NZ Ph +64 3 348 7235 or + 64 21 114 0699 www.thinkdesignprint.co.nz
Re: OS for RAID1
On Wed 15 Oct 2008 17:10:09 NZDT +1300, [EMAIL PROTECTED] wrote: What OS should I used? Linux. Stupid question ;) How easy is it to set up the two disks as RAID1? A few clicks in yast. Has been like that for donkeys years. How does it work? You need to ensure that grub gets installed on *both* disks. The bios will then try one of them first. In case one goes faulty, you can of course still boot from the other one, but you may need to adjust the bios disk boot order. Do I have to make a small boot pat on one of the drives then set up the rest? Not with raid1. You can boot from a raid1 because both partitions have identical content, therefore at boot time grub can read the necessary disk blocks from either disk underneath(!) the raid layer. That's why you can't boot from a raid2 or a raid5 - you need the raid layer to get your data back. The raid disk is always /dev/mdN, whereas the constituent disks may be /dev/sdaN and /dev/sdbN. Grub reads sd[ab]N. When grub is installed, the write is to mdN so goes to both disks identically. If I do that and the boot drive fails then what? See above. You take the stuffed disk out, continue working as normal until the replacement arrives, you stick the replacement back in, done. Saved my HUGE amounts of hassle several times now, disks have been so cheap, I wouldn't ever consider running my desktop without raid1. The other beauty with Linux kernel raid is, apart from needing no proprietory cr*p drivers (did I say Promise?), that you don't need to use the whole disks in a raid configuration. The disks don't even need to be the same size. You can easily use the first 15GB ofeach disk for /dev/md0 mounted on /, and the next 40GB (or however much you want for your most precious bits) as /dev/md1 mounted on /home. In theory, the disk areas used for a raid1 don't even need to be at the same starting point on both disks, however if they aren't, you won't be able to boot reliably from that raid1 any more as the grub will run correctly from at most one of the disks. So possible, but not advisable. Notes on openSUSE: The raid configuration works fine, but the grub confirguration is broken in many cases for 10.x and 11.0. The correct raid1 grub commands (for any distro) are: # cat /etc/grub.conf setup --stage2=/boot/grub/stage2 (hd1) (hd1,4) setup --stage2=/boot/grub/stage2 (hd0) (hd0,4) quit Create this file manually (obviously adjust the numbers and paths for your disks), then run grub --batch /etc/grub.conf to install the grub loader on both disks. Backup the file in case a kernel upgrade overwrites it. Oh yeah, many other distros[1] have /etc/grub.conf be a symlink to /boot/grub/menu.conf and are too stupid to save the commands used to install grub anywhere. In that case the above grub commands will work, but you're on your own to get your system organised. And if you didn't have the above commands to start with, you'd have a hell of a time finding out what to use. Volker [1] This includes Debian (or at least the non-latest Debians). -- Volker Kuhlmann is list0570 with the domain in header http://volker.dnsalias.net/ Please do not CC list postings to me.
Re: OS for RAID1
On Wed, 15 Oct 2008 20:04:34 +1300 [EMAIL PROTECTED] wrote: Volker Kuhlmann wrote: On Wed 15 Oct 2008 17:10:09 NZDT +1300, [EMAIL PROTECTED] wrote: What OS should I used? Linux. Stupid question ;) I meant which distro :) [1] This includes Debian (or at least the non-latest Debians). Yip, I'm thinking that Debian is the way to go because I already know it other than this raid stuff. I've been doing some googling as well and that seems to indicate that the etch installer should set up the raid, so when my disks get here I'll grab a distro and have a play I think. Cheers Don -- Don Gould 31 Acheson Ave, Mairehau, Christchurch, NZ Ph +64 3 348 7235 or + 64 21 114 0699 www.thinkdesignprint.co.nz you need to use lenny to get softraid running... -- Steve Holdoway [EMAIL PROTECTED]
Re: OS for RAID1
Volker Kuhlmann wrote: On Wed 15 Oct 2008 17:10:09 NZDT +1300, [EMAIL PROTECTED] wrote: What OS should I used? Linux. Stupid question ;) I meant which distro :) [1] This includes Debian (or at least the non-latest Debians). Yip, I'm thinking that Debian is the way to go because I already know it other than this raid stuff. I've been doing some googling as well and that seems to indicate that the etch installer should set up the raid, so when my disks get here I'll grab a distro and have a play I think. Cheers Don -- Don Gould 31 Acheson Ave, Mairehau, Christchurch, NZ Ph +64 3 348 7235 or + 64 21 114 0699 www.thinkdesignprint.co.nz
Re: OS for RAID1
On Wed, 15 Oct 2008 20:27:51 +1300 [EMAIL PROTECTED] wrote: Steve Holdoway wrote: you need to use lenny to get softraid running... Ok, any idea how far lenny is away from stable? Cheers Don just do it. It's stable enough for most uses... I've been using it as a test platform for 9 months. -- Steve Holdoway [EMAIL PROTECTED]
Re: OS for RAID1
On Wed, 15 Oct 2008 5:10:09 pm [EMAIL PROTECTED] wrote: I got a DC7100 with 1.2g ram, 2.8ghz, 40gb fxd (sata - it has 2 ports), I'll drop the fdd out and put the second fxd under the cd. I ordered 2 * 500gb sata drives for it. What OS should I used? I'm currently thinking debian because I know that one a bit. How easy is it to set up the two disks as RAID1? (The 40gb disk will have to come out, so I'll have to be booting off the drives as well.) How does it work? Do I have to make a small boot pat on one of the drives then set up the rest? If I do that and the boot drive fails then what? Or do I set up the two drives to be identical? Cheers Don I prefer to mirror the home partition. See my notes at http://www.fisherfamily.orconhosting.net.nz/softraid.html -- Regards, Robert -- Robert Fisher (aka - Rob, Bob, Robbie, Robbo, Fish) www.fisher.net.nz Phone: 03 383 5807 Mobile: 027 228 4698
Re: OS for RAID1
On Wed 15 Oct 2008 20:17:34 NZDT +1300, Steve Holdoway wrote: you need to use lenny to get softraid running... Uhhm, why? The md driver has been in the kernel for well over half a decade? Only mdadm is newer, and definitely worth having. Volker -- Volker Kuhlmann is list0570 with the domain in header http://volker.dnsalias.net/ Please do not CC list postings to me.
Re: OS for RAID1
On Wed, 15 Oct 2008 21:03:33 +1300 Volker Kuhlmann [EMAIL PROTECTED] wrote: On Wed 15 Oct 2008 20:17:34 NZDT +1300, Steve Holdoway wrote: you need to use lenny to get softraid running... Uhhm, why? The md driver has been in the kernel for well over half a decade? Only mdadm is newer, and definitely worth having. Volker -- Volker Kuhlmann is list0570 with the domain in header http://volker.dnsalias.net/ Please do not CC list postings to me. because decent softraid support is not available in etch. ??? Steve -- Steve Holdoway [EMAIL PROTECTED]
Re: OS for RAID1
On Wed 15 Oct 2008 20:04:34 NZDT +1300, [EMAIL PROTECTED] wrote: Yip, I'm thinking that Debian is the way to go because I already know it other than this raid stuff. Nothing wrong with that argumentation. The concept is not distro dependent. My standard response here is: it doesn't affect me what car you drive, Linux you use, or woman [EMAIL PROTECTED] NO CARRIER
Re: OS for RAID1
(k)ubuntu alternate cd is an option for you. early in the installation process when you get to the disk partitioning stage, you do a manual partitioning, create your various disk partitions on the first disk, and format type is NOT ext3 (or what ever you'd choose) but physical volume for RAID. then set up the second disk with the same partition sizes. Before selecting finish partitioning and write changes to disk go to the configure software raid entry where you can create md device of RAID0, 1 or 5. This is where you join up the matching partitions from the 2 drives. at this point you can then select a RAID1 device and specify format type and mount point. from there the installation is like any other - you slowly make a cup of coffee and come back to your fresh distro. there are tools for monitoring the health of the array, adding, removing disks - mdadm seems to be the one. Cheers, Roger [EMAIL PROTECTED] wrote: I got a DC7100 with 1.2g ram, 2.8ghz, 40gb fxd (sata - it has 2 ports), I'll drop the fdd out and put the second fxd under the cd. I ordered 2 * 500gb sata drives for it. What OS should I used? I'm currently thinking debian because I know that one a bit. How easy is it to set up the two disks as RAID1? (The 40gb disk will have to come out, so I'll have to be booting off the drives as well.) How does it work? Do I have to make a small boot pat on one of the drives then set up the rest? If I do that and the boot drive fails then what? Or do I set up the two drives to be identical? Cheers Don
Re: OS for RAID1
On Wed, Oct 15, 2008 at 11:57 PM, [EMAIL PROTECTED] wrote: My concern is a disk giving out and the system going down. In which case I need the whole system RAID1 not just the user data. Well, you can restore the OS from an install CD easily enough, and as long as you've got a list of installed packages, you'll be good to go quickly enough. Having said that, I don't have any customer servers that aren't on RAID1 for their OS, because no-one wants to waste time restoring from backup, or reinstalling :-) It all depends if disk costs too much for you ...
Re: OS for RAID1
On Thu 16 Oct 2008 22:45:18 NZDT +1300, Jim Cheetham wrote: Well, you can restore the OS from an install CD easily enough, and as long as you've got a list of installed packages, you'll be good to go quickly enough. Uhhm, Having said that, I don't have any customer servers that aren't on RAID1 for their OS, because no-one wants to waste time restoring from backup, or reinstalling :-) exactly. I can be without computer for the number of days it takes to get a new disk, then spend 2h installing Linux and anything up to X to configure it again the way I had it. Or I can take a slightly older disk from a previous computer, or buy another smaller disk, put it in as well, and remain mostly operational (and fully for email etc) all the way. There's just no comparison. Mount the non-raided disk partitions of the two disks as /data and /biggerdata, use one for your collections and the other for on-disk ISOs of your install media or latest backups. Raid doesn't do away with the need for backups, but the hassles it saves are enormous. A fortnight ago I ran badblocks etc and the works on one disk while keeping on working on the other disk. No problems, just a few reallocated sectors, so hot-add it again. Zero downtime. Volker -- Volker Kuhlmann is list0570 with the domain in header http://volker.dnsalias.net/ Please do not CC list postings to me.
Re: OS for RAID1
So a question for the stupid and slow like me. is it possible to install a raid system under Ubuntu gnome desktop ver 8.04 I have not yet looked online, as I only have a dial up connection which is flakey where I live Regards Chris T On Thu, 2008-10-16 at 09:04 +1300, Volker Kuhlmann wrote: On Thu 16 Oct 2008 22:45:18 NZDT +1300, Jim Cheetham wrote: Well, you can restore the OS from an install CD easily enough, and as long as you've got a list of installed packages, you'll be good to go quickly enough. Uhhm, Having said that, I don't have any customer servers that aren't on RAID1 for their OS, because no-one wants to waste time restoring from backup, or reinstalling :-) exactly. I can be without computer for the number of days it takes to get a new disk, then spend 2h installing Linux and anything up to X to configure it again the way I had it. Or I can take a slightly older disk from a previous computer, or buy another smaller disk, put it in as well, and remain mostly operational (and fully for email etc) all the way. There's just no comparison. Mount the non-raided disk partitions of the two disks as /data and /biggerdata, use one for your collections and the other for on-disk ISOs of your install media or latest backups. Raid doesn't do away with the need for backups, but the hassles it saves are enormous. A fortnight ago I ran badblocks etc and the works on one disk while keeping on working on the other disk. No problems, just a few reallocated sectors, so hot-add it again. Zero downtime. Volker
Re: OS for RAID1
On Wed, 2008-10-15 at 20:32 +1300, Steve Holdoway wrote: On Wed, 15 Oct 2008 20:27:51 +1300 [EMAIL PROTECTED] wrote: Steve Holdoway wrote: you need to use lenny to get softraid running... Ok, any idea how far lenny is away from stable? Cheers Don just do it. It's stable enough for most uses... Er, about 200 critical bugs off? I kid you not. http://viksnewsclippings.blogspot.com/2008/10/14-oct-2008-am-clippings.html Vik :v)
Re: OS for RAID1
On Wed, 15 Oct 2008 21:46:53 +1300 Volker Kuhlmann [EMAIL PROTECTED] wrote: On Wed 15 Oct 2008 21:16:57 NZDT +1300, Steve Holdoway wrote: Uhhm, why? The md driver has been in the kernel for well over half a decade? Only mdadm is newer, and definitely worth having. because decent softraid support is not available in etch. Sorry I don't understand. Does it need more than the md device in the kernel, and mdadm? Some init script to crank it at boot, and perhaps an initial ramdisk with a few modules, like raid1 and your disk access stuff as necessary. That doesn't look like a lot to me? Or what do you mean by decent? Volker -- Volker Kuhlmann is list0570 with the domain in header http://volker.dnsalias.net/ Please do not CC list postings to me. I don't have access to those notes any more, but my hazy memory suggests a mix of 64 bit OS and the bios was the culprit. And no, I was using softraid, not fake raid. I remember being a bit hacked off about this as it was a year or so ago, and lenny was less stable than now, and this was to be a core development ( database ) server for the next production release. Etch wouldn't play, no way, but lenny went on, no problem. And it's not like the first time I've done it... (: Steve -- Steve Holdoway [EMAIL PROTECTED]
Re: OS for RAID1
I think you need the alternate install disk to get it to install softraid, not the desktop version. Wesley should be able to fix you up ( plug, plug ). Steve On Thu, 16 Oct 2008 09:23:48 +1300 chris [EMAIL PROTECTED] wrote: So a question for the stupid and slow like me. is it possible to install a raid system under Ubuntu gnome desktop ver 8.04 I have not yet looked online, as I only have a dial up connection which is flakey where I live Regards Chris T On Thu, 2008-10-16 at 09:04 +1300, Volker Kuhlmann wrote: On Thu 16 Oct 2008 22:45:18 NZDT +1300, Jim Cheetham wrote: Well, you can restore the OS from an install CD easily enough, and as long as you've got a list of installed packages, you'll be good to go quickly enough. Uhhm, Having said that, I don't have any customer servers that aren't on RAID1 for their OS, because no-one wants to waste time restoring from backup, or reinstalling :-) exactly. I can be without computer for the number of days it takes to get a new disk, then spend 2h installing Linux and anything up to X to configure it again the way I had it. Or I can take a slightly older disk from a previous computer, or buy another smaller disk, put it in as well, and remain mostly operational (and fully for email etc) all the way. There's just no comparison. Mount the non-raided disk partitions of the two disks as /data and /biggerdata, use one for your collections and the other for on-disk ISOs of your install media or latest backups. Raid doesn't do away with the need for backups, but the hassles it saves are enormous. A fortnight ago I ran badblocks etc and the works on one disk while keeping on working on the other disk. No problems, just a few reallocated sectors, so hot-add it again. Zero downtime. Volker -- Steve Holdoway [EMAIL PROTECTED]
Re: OS for RAID1
On Thu, 16 Oct 2008 09:33:39 +1300 Vik Olliver [EMAIL PROTECTED] wrote: On Wed, 2008-10-15 at 20:32 +1300, Steve Holdoway wrote: On Wed, 15 Oct 2008 20:27:51 +1300 [EMAIL PROTECTED] wrote: Steve Holdoway wrote: you need to use lenny to get softraid running... Ok, any idea how far lenny is away from stable? Cheers Don just do it. It's stable enough for most uses... Er, about 200 critical bugs off? I kid you not. http://viksnewsclippings.blogspot.com/2008/10/14-oct-2008-am-clippings.html Vik :v) I recommend that you break these down by architecture and relevance to a mainstream server to see haw many are still relevant... For example, what practical impact does 'arpack: DFSG-incompatible license' have??? I recommend that arcicles like there are taken with a pinch of salt. Personally, I'd install lenny before ubuntu on a production server. Steve. -- Steve Holdoway [EMAIL PROTECTED]
Re: OS for RAID1
On Thu, 2008-10-16 at 10:39 +1300, Steve Holdoway wrote: For example, what practical impact does 'arpack: DFSG-incompatible license' have??? It means it's against the Debian social contract and so can't be shipped as a stable release. I recommend that arcicles like there are taken with a pinch of salt. Personally, I'd install lenny before ubuntu on a production server. Still on Etch here... Vik :v)
Re: OS for RAID1 - wesley do you have lenny?
Steve Holdoway wrote: I think you need the alternate install disk to get it to install softraid, not the desktop version. Wesley should be able to fix you up ( plug, plug ). Is Lenny in the archive? Cheers Don -- Don Gould 31 Acheson Ave, Mairehau, Christchurch, NZ Ph +64 3 348 7235 or + 64 21 114 0699 www.thinkdesignprint.co.nz
Re: OS for RAID1 - wesley do you have lenny?
Is Lenny in the archive? quote='http://www.debian.org/releases/' The next release of Debian is codenamed lenny — no release date has been set /quote Sorry, no. We only hold released versions. -- Sincerely etc. Christopher Sawtell
Re: OS for RAID1 - The answer so far...
Ok, so the answer so far is to use Lenny, as it's installer will guide me through the process of setting up RAID1. Mirror both disks because then you're covered for disk failure. Make sure the bios know to boot from the other disk if the first fails. Make sure grub is the same on both disks so that everything books up. mdadm is a tool for managing the RAID configuration, but I can't find a decent functional overview that clearly explains the scope. QUESTIONS... What tools do I need to know about? What reporting do I get and how do I get it? (email, logs, etc) What tools do I need to use to monitor the disks to make sure they're not failing? (Can you tell I'm a guy who's never had a disk fail before? So I've never worried about monitoring them.) How do I test the array once I've built it? Being SATA is hot start, I assume I can just pull the data cable off and things should keep trucking? Can I assume I'll get an alert some how? If I write data to the disk while one disk is missing then it will need to resync once the disk comes back. How long does this normally take? Is there a delay? How do I put a new disk in if one fails? Can I just wack a blank disk in and the tools will sort out the rest? What happens if disk 0 fails, data is written to disk 1, then disk 0 comes back, then disk 1 fails, data is written to disk 0, then disk 1 comes back. Will it sync everything up correctly even if some recovery hadn't been finished between failures? What other gotya's do I need to know about? Cheers Don -- Don Gould 31 Acheson Ave, Mairehau, Christchurch, NZ Ph +64 3 348 7235 or + 64 21 114 0699 www.thinkdesignprint.co.nz
Re: OS for RAID1 - The answer so far...
http://www.networknewz.com/2003/0113.html (k)ubuntu alternate install also guides you through setting up raid (0, 1, 5). since i don't know anything about lenny, i can't comment on you saying grub needs to know about the disks - the process of setting up software raid (in kubuntu) takes care of all this for you, there is nothing to do there, move right along... many of your other questions are answered when you click the link above. have fun, and please send updates on what you do, there are aspects of this that i haven't got my head around yet so will follow this thread looking for insights. Cheers, Roger [EMAIL PROTECTED] wrote: Ok, so the answer so far is to use Lenny, as it's installer will guide me through the process of setting up RAID1. Mirror both disks because then you're covered for disk failure. Make sure the bios know to boot from the other disk if the first fails. Make sure grub is the same on both disks so that everything books up. mdadm is a tool for managing the RAID configuration, but I can't find a decent functional overview that clearly explains the scope. QUESTIONS... What tools do I need to know about? What reporting do I get and how do I get it? (email, logs, etc) What tools do I need to use to monitor the disks to make sure they're not failing? (Can you tell I'm a guy who's never had a disk fail before? So I've never worried about monitoring them.) How do I test the array once I've built it? Being SATA is hot start, I assume I can just pull the data cable off and things should keep trucking? Can I assume I'll get an alert some how? If I write data to the disk while one disk is missing then it will need to resync once the disk comes back. How long does this normally take? Is there a delay? How do I put a new disk in if one fails? Can I just wack a blank disk in and the tools will sort out the rest? What happens if disk 0 fails, data is written to disk 1, then disk 0 comes back, then disk 1 fails, data is written to disk 0, then disk 1 comes back. Will it sync everything up correctly even if some recovery hadn't been finished between failures? What other gotya's do I need to know about? Cheers Don
Re: OS for RAID1 - The answer so far...
Roger Searle wrote: http://www.networknewz.com/2003/0113.html (k)ubuntu alternate install also guides you through setting up raid (0, 1, 5). since i don't know anything about lenny, i can't comment on you saying grub needs to know about the disks - the process of setting up software raid (in kubuntu) takes care of all this for you, there is nothing to do there, move right along... Ok I might grab a copy of kubuntu then... or did you mean both k and g? Does the archive have current copies of that? What version numbers am I looking for? many of your other questions are answered when you click the link above. have fun, and please send updates on what you do, there are aspects of this that i haven't got my head around yet so will follow this thread looking for insights. I will... that's what I was doing, in posting that last message. I'd like to leave a paper trail so that the next person can find my notes and peoples responses. (There's nothing worse than seeing questions on a mailing list archive without ever there being answers!) Cheers Don -- Don Gould 31 Acheson Ave, Mairehau, Christchurch, NZ Ph +64 3 348 7235 or + 64 21 114 0699 www.thinkdesignprint.co.nz
Re: OS for RAID1
On Thu, 16 Oct 2008 10:26:05 am Steve Holdoway wrote: I think you need the alternate install disk to get it to install softraid, not the desktop version. Wesley should be able to fix you up ( plug, plug ). Or if you have an existing running system you could follow my notes to add a disk and mirror your home partition. http://www.fisherfamily.orconhosting.net.nz/softraid.html Steve On Thu, 16 Oct 2008 09:23:48 +1300 chris [EMAIL PROTECTED] wrote: So a question for the stupid and slow like me. is it possible to install a raid system under Ubuntu gnome desktop ver 8.04 I have not yet looked online, as I only have a dial up connection which is flakey where I live Regards Chris T On Thu, 2008-10-16 at 09:04 +1300, Volker Kuhlmann wrote: On Thu 16 Oct 2008 22:45:18 NZDT +1300, Jim Cheetham wrote: Well, you can restore the OS from an install CD easily enough, and as long as you've got a list of installed packages, you'll be good to go quickly enough. Uhhm, Having said that, I don't have any customer servers that aren't on RAID1 for their OS, because no-one wants to waste time restoring from backup, or reinstalling :-) exactly. I can be without computer for the number of days it takes to get a new disk, then spend 2h installing Linux and anything up to X to configure it again the way I had it. Or I can take a slightly older disk from a previous computer, or buy another smaller disk, put it in as well, and remain mostly operational (and fully for email etc) all the way. There's just no comparison. Mount the non-raided disk partitions of the two disks as /data and /biggerdata, use one for your collections and the other for on-disk ISOs of your install media or latest backups. Raid doesn't do away with the need for backups, but the hassles it saves are enormous. A fortnight ago I ran badblocks etc and the works on one disk while keeping on working on the other disk. No problems, just a few reallocated sectors, so hot-add it again. Zero downtime. Volker -- Regards, Robert -- Robert Fisher (aka - Rob, Bob, Robbie, Robbo, Fish) www.fisher.net.nz Phone: 03 383 5807 Mobile: 027 228 4698
Re: OS for RAID1 - wesley do you have lenny?
On Thu, 16 Oct 2008 11:55:57 am [EMAIL PROTECTED] wrote: Steve Holdoway wrote: I think you need the alternate install disk to get it to install softraid, not the desktop version. Wesley should be able to fix you up ( plug, plug ). Is Lenny in the archive? Cheers Don I have debian-LennyBeta2-i386-DVD-1.iso dated 29/9/08 if you want I also have debian-LennyBeta2-i386-kde-CD-1.iso dated 19/8/08 -- Regards, Robert -- Robert Fisher (aka - Rob, Bob, Robbie, Robbo, Fish) www.fisher.net.nz Phone: 03 383 5807 Mobile: 027 228 4698
Re: OS for RAID1 - The answer so far...
[EMAIL PROTECTED] wrote: Roger Searle wrote: http://www.networknewz.com/2003/0113.html (k)ubuntu alternate install also guides you through setting up raid (0, 1, 5). since i don't know anything about lenny, i can't comment on you saying grub needs to know about the disks - the process of setting up software raid (in kubuntu) takes care of all this for you, there is nothing to do there, move right along... Ok I might grab a copy of kubuntu then... or did you mean both k and g? kubuntu has kde desktop by default. g? no idea what that is. ubuntu has gnome. Does the archive have current copies of that? What version numbers am I looking for? 8.10 is due out any day - 8 = 2008, 10 = october. many of your other questions are answered when you click the link above. have fun, and please send updates on what you do, there are aspects of this that i haven't got my head around yet so will follow this thread looking for insights. I will... that's what I was doing, in posting that last message. I'd like to leave a paper trail so that the next person can find my notes and peoples responses. (There's nothing worse than seeing questions on a mailing list archive without ever there being answers!) Cheers Don
Re: OS for RAID1 - The answer so far...
also mdam is in the ubuntu repositories regards chris T On Thu, 2008-10-16 at 17:08 +1300, Roger Searle wrote: [EMAIL PROTECTED] wrote: Roger Searle wrote: http://www.networknewz.com/2003/0113.html (k)ubuntu alternate install also guides you through setting up raid (0, 1, 5). since i don't know anything about lenny, i can't comment on you saying grub needs to know about the disks - the process of setting up software raid (in kubuntu) takes care of all this for you, there is nothing to do there, move right along... Ok I might grab a copy of kubuntu then... or did you mean both k and g? kubuntu has kde desktop by default. g? no idea what that is. ubuntu has gnome. Does the archive have current copies of that? What version numbers am I looking for? 8.10 is due out any day - 8 = 2008, 10 = october. many of your other questions are answered when you click the link above. have fun, and please send updates on what you do, there are aspects of this that i haven't got my head around yet so will follow this thread looking for insights. I will... that's what I was doing, in posting that last message. I'd like to leave a paper trail so that the next person can find my notes and peoples responses. (There's nothing worse than seeing questions on a mailing list archive without ever there being answers!) Cheers Don
OS for RAID1
I got a DC7100 with 1.2g ram, 2.8ghz, 40gb fxd (sata - it has 2 ports), I'll drop the fdd out and put the second fxd under the cd. I ordered 2 * 500gb sata drives for it. What OS should I used? I'm currently thinking debian because I know that one a bit. How easy is it to set up the two disks as RAID1? (The 40gb disk will have to come out, so I'll have to be booting off the drives as well.) How does it work? Do I have to make a small boot pat on one of the drives then set up the rest? If I do that and the boot drive fails then what? Or do I set up the two drives to be identical? Cheers Don -- Don Gould 31 Acheson Ave, Mairehau, Christchurch, NZ Ph +64 3 348 7235 or + 64 21 114 0699 www.thinkdesignprint.co.nz
Re: OS for RAID1
Does anyone have any comment on this page: http://xtronics.com/reference/SATA-RAID-debian-for-2.6.html Cheers Don [EMAIL PROTECTED] wrote: I got a DC7100 with 1.2g ram, 2.8ghz, 40gb fxd (sata - it has 2 ports), I'll drop the fdd out and put the second fxd under the cd. I ordered 2 * 500gb sata drives for it. What OS should I used? I'm currently thinking debian because I know that one a bit. How easy is it to set up the two disks as RAID1? (The 40gb disk will have to come out, so I'll have to be booting off the drives as well.) How does it work? Do I have to make a small boot pat on one of the drives then set up the rest? If I do that and the boot drive fails then what? Or do I set up the two drives to be identical? Cheers Don -- Don Gould 31 Acheson Ave, Mairehau, Christchurch, NZ Ph +64 3 348 7235 or + 64 21 114 0699 www.thinkdesignprint.co.nz
