On Thu, Oct 18, 2007 at 03:19:50PM +0200, Martin Marcher wrote: > 2007/10/18, Alex Samad <alex@samad.com.au>: > > On Thu, Oct 18, 2007 at 01:39:21PM +0200, Martin Marcher wrote: > > > > IMHO lvm mirroring is useless. if I do LVM (on servers) I have > > > multiple drives and i tend to trust mdadm more in this field than LVM > > > (don't ask me why - I couldn't logically say why). > > > > it would be good to here from somebody that uses lvm mirroring. I would like > > to access some of that extra space that would be made available if I did > > mirroring at the lvm level instead of the md level. > > wouldn't that defeat the purpose of mirror? There is some data I would like on raid1 and some I don;t care about, ie ripped music, video's, stuff I backup off computer and offsite, if I lose a days worth of stuff who cares, or if I have to re rip it who cares. Hopefully HD smart will warn me of a failing disk and I can use lvm to more the lv to another pv. For the important stuff I do want raid1. LVM just seems more flexible to cutting up and managing raw space than mdadm, with the later I have to create to pools of space raid1 and raid0 and I have to define it at the initial setup, with lvm all the space goes to a vg and I can define it at creation of the lv > > I think if I do mirror my data I _want_ it to be redundantent (how do > you spell that?). I wouldn't want to risk something by gaining a few % > of space, rather I'd like to be assured that if a disk dies I can > simply replace it and LVM will not even take care about that (hotplug > with mdadm) - on the other hand I never looked into mirroring LVM > because mdadm is just made for that. Correct me if I'm wrong. yep, it seems like lvm is slower (!?) than mdadm mirroring, so I will stick with raid1 under lvm > > martin > > -- > http://noneisyours.marcher.name > http://feeds.feedburner.com/NoneIsYours > > > -- > To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org > with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org > >
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