Re: Setup of a software RAID-1 to an existing system?
On Monday, 23 June 2003 at 5:00:23 +0300, Johan Paul wrote: > Hi all! > > This is repost from freebsd-newbies mailing list since this might be a > more suitable mailing list for my question. > > I am pretty new to FreeBSD but thought it might be a nice idea to > migrate from a Linux server to a FreeBSD one. > > My question is regarding software RAID-1 for this FreeBSD box. I have > two qually sized IDE hard drives and I installed FreeBSD 4.8 on the > other one. Now the question is: can I make a RAID-1 array of these > two disks while FreeBSD is installed on the other one (using vinum or > other...)? Or how do I get RAID-1 to work on these two disks? FreeBSD > got one slice from each disk that occupy the whole disk. Only the first > disk is partitioned into 4 pieces (details about the partitions might be > unneccesary...?). > > I've read some of the vinum documentation but it is unclear to me if > it is possible to set up a RAID-1 on a running file system - and if my > assumptions are correct, that it is impossible, it is unclear to me > how to set up this software RAID-1? You might like to take a look at http://www.vinumvm.org/cfbsd/vinum.pdf or http://www.vinumvm.org/cfbsd/vinum.txt. This is the Vinum chapter from "The Complete FreeBSD". Greg -- When replying to this message, please copy the original recipients. If you don't, I may ignore the reply or reply to the original recipients. For more information, see http://www.lemis.com/questions.html See complete headers for address and phone numbers pgp0.pgp Description: PGP signature
Re: Setup of a software RAID-1 to an existing system?
On Mon, Jun 23, 2003 at 05:00:23AM +0300 or thereabouts, Johan Paul seemed to write: > Hi all! > > This is repost from freebsd-newbies mailing list since this might be a > more suitable mailing list for my question. You're right, it is. > > I am pretty new to FreeBSD but thought it might be a nice idea to > migrate from a Linux server to a FreeBSD one. > > My question is regarding software RAID-1 for this FreeBSD box. I have > two qually sized IDE hard drives and I installed FreeBSD 4.8 on the > other one. Now the question is: can I make a RAID-1 array of these > two disks while FreeBSD is installed on the other one (using vinum or > other...)? Or how do I get RAID-1 to work on these two disks? FreeBSD > got one slice from each disk that occupy the whole disk. Only the first > disk is partitioned into 4 pieces (details about the partitions might be > unneccesary...?). > > I've read some of the vinum documentation but it is unclear to me if > it is possible to set up a RAID-1 on a running file system - and if my > assumptions are correct, that it is impossible, it is unclear to me > how to set up this software RAID-1? I would read the "Bootstrapping Vinum" article in the FreeBSD Documentation Set. Alternative is just backup your data, boot from the Fixit CDROM, run vinum, restore. -- Josh > > > Regards, > > Johan Paul > > ___ > [EMAIL PROTECTED] mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "[EMAIL PROTECTED]" ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Setup of a software RAID-1 to an existing system?
Hi all! This is repost from freebsd-newbies mailing list since this might be a more suitable mailing list for my question. I am pretty new to FreeBSD but thought it might be a nice idea to migrate from a Linux server to a FreeBSD one. My question is regarding software RAID-1 for this FreeBSD box. I have two qually sized IDE hard drives and I installed FreeBSD 4.8 on the other one. Now the question is: can I make a RAID-1 array of these two disks while FreeBSD is installed on the other one (using vinum or other...)? Or how do I get RAID-1 to work on these two disks? FreeBSD got one slice from each disk that occupy the whole disk. Only the first disk is partitioned into 4 pieces (details about the partitions might be unneccesary...?). I've read some of the vinum documentation but it is unclear to me if it is possible to set up a RAID-1 on a running file system - and if my assumptions are correct, that it is impossible, it is unclear to me how to set up this software RAID-1? Regards, Johan Paul ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Setup of a software RAID-1 to an existing system?
Johan, The canonical answer is to repost to freebsd-questions, which enjoys a larger readership. But I'll try -- your question is interesting b/c I'm in the same boat, except w/ CURRENT. As you said, breezing through the handbook will show a lot of detail, but perhaps it does not directly address mirroring a live fs. Aside from the handwaving, you might check http://www.vinumvm.org/. There seems to be a relevant (if a little dated) article: http://www.freebsd.org/doc/en_US.ISO8859-1/articles/vinum/index.html It may be possible to mirror partitions, even if half of it is live. Were this not the case, it's prob possible to boot the install cdrom and play some tricks with dd or dump to sync the disks. Perhaps they could then be mounted, vinum set up, and then booted into. It would be fantastic if the freebsd installer had the ability to run raid 1 right out the chute. Doubtless, there's a number of us w/ legacy servers having two disks but no hardware raid. Good luck. Share your notes (at least to newbies) once you get it working! Regards, Tom McIntyre -Original Message- From: Johan Paul [mailto:[EMAIL PROTECTED] Sent: Sunday, June 22, 2003 12:19 PM To: [EMAIL PROTECTED] Subject: Setup of a software RAID-1 to an existing system? Hi all! I am pretty new to FreeBSD but thought it might be a nice idea to migrate from a Linux server to a FreeBSD one. My question is regarding software RAID-1 for this FreeBSD box. I have two IDE equally sized hard drives and I installed FreeBSD 4.8 on the other one. Now the question is: can I make a RAID-1 array of these two disks while FreeBSD is installed on the other one (using vinum or other...)? Or how do I get RAID-1 to work on these two disks? I've read some of the vinum documentation but it is unclear to me if it is possible to set up a RAID-1 on a running disk system - and if my assumptions are correct, that it is impossible, it is unclear to me how to set up this RAID-1? Regards, Johan Paul __ Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month! http://sbc.yahoo.com ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
