Re: [CentOS] Install on two discs with Software Raid and LVM
That's old information, kernel swapper can handle all types of dev mapper setups these days (well all types on fixed media). -Ross - Original Message - From: [EMAIL PROTECTED] <[EMAIL PROTECTED]> To: 'CentOS mailing list' Sent: Mon Feb 04 17:43:50 2008 Subject: RE: [CentOS] Install on two discs with Software Raid and LVM >Create a swap lv in the vg you created out of /dev/md1, assuming /dev/md0 is >/boot. > >-Ross Oh, I thought it wasn’t good to run swap inside software raid? If I was wrong, I assume this is beneficial since if one of the HD’s tanks while its running, it will survive the failure and not need to reboot? Thanks! jlc __ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
RE: [CentOS] Install on two discs with Software Raid and LVM
>Create a swap lv in the vg you created out of /dev/md1, assuming /dev/md0 is >/boot. > >-Ross Oh, I thought it wasn’t good to run swap inside software raid? If I was wrong, I assume this is beneficial since if one of the HD’s tanks while its running, it will survive the failure and not need to reboot? Thanks! jlc ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
RE: [CentOS] Install on two discs with Software Raid and LVM
>That's old information, kernel swapper can handle all types of dev mapper >setups these days (well all types on fixed media). Ross and Les, Thank you! jlc ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Install on two discs with Software Raid and LVM
Joseph L. Casale wrote: > I am mirroring two drives during install, what's the best practice here for > the swap partition? Maybe two separate lv's from independent vg's *not* > mirrored for swap and the let the OS manage it? Boot and the / vg will be > mirrored. More of a comment than a answer but I don't use LVM for the internal disks on my systems, only for external disks(SAN, etc). I've found that at least for me LVM is very problematic when used in kickstart, I get frequent failures(python errors). So I just go with normal partitions internally. My software raid setup for systems that use it, is 100MB /boot partition, a 4G swap partition and the rest of the drive is one big root partition. All of them in software RAID 1. #Partition clearing information clearpart --all #Partition the Drives part raid.01 --size=100 --ondisk=sda part raid.02 --size=100 --ondisk=sdb raid /boot --level 1 --device=md0 raid.01 raid.02 part raid.03 --size=4096 --ondisk=sda part raid.04 --size=4096 --ondisk=sdb raid swap --level 1 --device=md1 raid.03 raid.04 part raid.05 --size=100 --ondisk=sda --grow part raid.06 --size=100 --ondisk=sdb --grow raid / --level 1 --device=md2 raid.05 raid.06 Then to work around a software raid bug in anaconda in CentOS/RHEL 4(not sure about 5, but I still do it anyways), in my %post I do: cat >/tmp/grub.txt <&1 | tee /root/grub-install.txt Without the workaround there's a high likely hood that the system won't boot to the OS afterwards. If you foresee frequent changes on your OS disks then LVM is probably a good choice, I just got sick of the kickstart failures with it. nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Install on two discs with Software Raid and LVM
Create a swap lv in the vg you created out of /dev/md1, assuming /dev/md0 is /boot. -Ross - Original Message - From: [EMAIL PROTECTED] <[EMAIL PROTECTED]> To: 'centos@centos.org' Sent: Mon Feb 04 17:29:45 2008 Subject: [CentOS] Install on two discs with Software Raid and LVM I am mirroring two drives during install, what's the best practice here for the swap partition? Maybe two separate lv's from independent vg's *not* mirrored for swap and the let the OS manage it? Boot and the / vg will be mirrored. Thanks! jlc ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos __ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Install on two discs with Software Raid and LVM
Joseph L. Casale wrote: I am mirroring two drives during install, what's the best practice here for the swap partition? Maybe two separate lv's from independent vg's *not* mirrored for swap and the let the OS manage it? Boot and the / vg will be mirrored. If you would like to keep running though a disk failure you need to mirror swap. -- Les Mikesell [EMAIL PROTECTED] ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
