Re: [gentoo-user] Re: LVM : pros & cons
Jim Burwell wrote: > Dale wrote: > >> Philip Webb wrote: >> >>> 071008 Alan McKinnon wrote: >>> >>> This question "Is LVM a good idea?" keeps cropping up on mailing lists. I find this a bit strange as I find huge benefits and have yet to find a valid downside for general use. >>> If you haven't used it, it looks like a questionable extra complexity, >>> which could bite your fingers unexpectedly for little real gain. >>> However, I am grateful for all the replies & may decide to use it, >>> the comments being generally reassuring as to its stability. >>> There is a Gentoo doc re how to fit it into the install process. >>> >>> >>> >> That's me too. I checked into it but just have not got the nerve up >> to switch. I have had to redo my partitions a couple times though so >> I could use it for sure. >> >> Maybe one of these days. >> >> Dale >> >> :-) :-) :-) >> > I must be one of the 'crazy' ones. I run LVM2 for / under linux RAID. > Even /boot is on a RAID1. I use genkernel for the proper initramfs. > You just need to use "dolvm2" and "lvmraid=/dev/mdX ..." on your boot line. > > > But all I need is some glue and feathers. I worked long and hard to get my Gentoo install just like it is. Even the thought of losing it makes me as nervous as a long tail cat in a room full of rocking chairs. You are right though, everything I have read says it is a great thing to use. I even read up on EVMS. Just got to get the nerve up. Dale, AKA the chicken. LOL :-) :-)
Re: [gentoo-user] Re: LVM : pros & cons
Dale wrote: > Philip Webb wrote: >> 071008 Alan McKinnon wrote: >> >>> This question "Is LVM a good idea?" keeps cropping up on mailing lists. >>> I find this a bit strange as I find huge benefits >>> and have yet to find a valid downside for general use. >>> >> >> If you haven't used it, it looks like a questionable extra complexity, >> which could bite your fingers unexpectedly for little real gain. >> However, I am grateful for all the replies & may decide to use it, >> the comments being generally reassuring as to its stability. >> There is a Gentoo doc re how to fit it into the install process. >> >> > > > That's me too. I checked into it but just have not got the nerve up > to switch. I have had to redo my partitions a couple times though so > I could use it for sure. > > Maybe one of these days. > > Dale > > :-) :-) :-) I must be one of the 'crazy' ones. I run LVM2 for / under linux RAID. Even /boot is on a RAID1. I use genkernel for the proper initramfs. You just need to use "dolvm2" and "lvmraid=/dev/mdX ..." on your boot line. smime.p7s Description: S/MIME Cryptographic Signature
Re: [gentoo-user] Re: LVM : pros & cons
Philip Webb wrote: > 071008 Alan McKinnon wrote: > >> This question "Is LVM a good idea?" keeps cropping up on mailing lists. >> I find this a bit strange as I find huge benefits >> and have yet to find a valid downside for general use. >> > > If you haven't used it, it looks like a questionable extra complexity, > which could bite your fingers unexpectedly for little real gain. > However, I am grateful for all the replies & may decide to use it, > the comments being generally reassuring as to its stability. > There is a Gentoo doc re how to fit it into the install process. > > That's me too. I checked into it but just have not got the nerve up to switch. I have had to redo my partitions a couple times though so I could use it for sure. Maybe one of these days. Dale :-) :-) :-)
Re: [gentoo-user] Re: LVM : pros & cons
Hello Philip Webb, > If you haven't used it, it looks like a questionable extra complexity, > which could bite your fingers unexpectedly for little real gain. It' one of those things[1] that you put off using because it looks complicated. then you get round to trying it and wish you'd done so much earlier. [1] Screen falls into this category too. -- Neil Bothwick Borg, James Borg. Vodka martini, Gin is irrelevant. signature.asc Description: PGP signature
Re: [gentoo-user] Re: LVM : pros & cons
071008 Alan McKinnon wrote: > This question "Is LVM a good idea?" keeps cropping up on mailing lists. > I find this a bit strange as I find huge benefits > and have yet to find a valid downside for general use. If you haven't used it, it looks like a questionable extra complexity, which could bite your fingers unexpectedly for little real gain. However, I am grateful for all the replies & may decide to use it, the comments being generally reassuring as to its stability. There is a Gentoo doc re how to fit it into the install process. -- ,, SUPPORT ___//___, Philip Webb : [EMAIL PROTECTED] ELECTRIC /] [] [] [] [] []| Centre for Urban & Community Studies TRANSIT`-O--O---' University of Toronto -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Re: LVM : pros & cons
On Monday 08 October 2007, Alexander Skwar wrote: > Alan McKinnon <[EMAIL PROTECTED]> wrote: > > Extra benefits of LVM: You won't need this right now for your > > simple desktop with one drive, but it's good to know what else LVM > > can do: > > > > Snapshots. > > Well, I "disagree". This feature is also very useful on a > single drive setup. Reason why: Backup. You can easily create > snapshot(s) and then backup those snapshot volumes. And at > the same time, you can keep on working on the normal filesystems. Yes, that's the general process I was referring to. Snapshots are used much less often for backups on desktops (but still useful!) than on servers. I had assumed that the original poster wasn't going to be using snapshots on his desktop anytime soon. > > This is a lifesaver if your job is to perform backups of 4TB > > databases that can never be taken down for backups. > > IMO it's also good for smaller setups. > > For huge setups, it's sort of a must, exactly as you wrote. > > > If you need any more convincing, IBM mainframes and HP machines > > running HP-UX have required you to use LVM for years now - you > > can't get to the disks without using LVM. > > Not true. With HP-UX 11.11, you could also choose *NOT* to use LVM. Ah, OK, thanks for that. My info came from a long-time HP sysadmin when we were comparing notes between HP-UX and Linux. He might have generalised a lot though. This question of "Is LVM a good idea?" keeps cropping up on mailing lists. I find this a bit strange as I find huge benefits and have yet to find a valid downside for general use. Embedded systems would be an exception I suppose but they generally don't need any flexibility at all on their volumes. alan -- Optimists say the glass is half full, Pessimists say the glass is half empty, Developers say wtf is the glass twice as big as it needs to be? Alan McKinnon alan at linuxholdings dot co dot za +27 82, double three seven, one nine three five -- [EMAIL PROTECTED] mailing list
