On Fri, Oct 15, 2004 at 10:15:07AM +0200, John Seifarth wrote: > Eric Hopper posted the query below last weekend, but I've seen no > replies on the list. Here are the things I've seen... Snapshots of the root partition seem dodgey. Someone claims that they work on the latest LVM2 client library. Snapshots of other partitions seem to work OK. pvmove has lots of weird and arcane limitations that make no sense to me at all. It acted very strangely and seemed to lock parts of my system when I tried it with a fresh Fedora Core 2 install, and I've been afraid to try it since. I see lots of messages flying back and forth about people having to hand-construct command lines to move specific extents because of some odd limitation of pvmove. I also see little hard information about these limitations or why they exist. I see all kinds of confused posts stating that this detail or that detail is the reason some particular operation doesn't work quite right. I used to know some of the LVM developers personally, and this list used to be much more open about the internal workings of LVM and there used to be people who would state plainly and authoritatively what was causing some particular problem. I remember fondly the debates over getting /boot onto an LVM partition. I don't know what's happened or why. From the outside, it seems as if LVM2 (which by all accounts is much higher quality code) was rushed into production before it was feature-comparable to LVM1, and all the developers are embarassed about it and not talking frankly about what's wrong. If this were not Open Source, I'd say the company they worked for was discouraging them from discussing the limitations openly and leaving the users to guess and talk amongst themselves about them. Maybe I'm wrong. *sigh*, -- "It does me no injury for my neighbor to say there are twenty gods or no God. It neither picks my pocket nor breaks my leg." --- Thomas Jefferson "Go to Heaven for the climate, Hell for the company." -- Mark Twain -- Eric Hopper (hopper@omnifarious.org http://www.omnifarious.org/~hopper) --
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