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Re: [Qemu-devel] Re: [ANNOUNCE] Sheepdog: Distributed Storage System for

From: Tomasz Chmielewski
Subject: Re: [Qemu-devel] Re: [ANNOUNCE] Sheepdog: Distributed Storage System for KVM
Date: Fri, 23 Oct 2009 19:05:32 +0200
User-agent: Thunderbird (X11/20091009)

Chris Webb wrote:
Javier Guerra <address@hidden> writes:

i'd just want to add my '+1 votes' on both getting rid of JVM
dependency and using block devices (usually LVM) instead of ext3/btrfs

If the chunks into which the virtual drives are split are quite small (say
the 64MB used by Hadoop), LVM may be a less appropriate choice. It doesn't
support very large numbers of very small logical volumes very well.

Also, on _loaded_ systems, I noticed creating/removing logical volumes can take really long (several minutes); where allocating a file of a given size would just take a fraction of that.

Sot sure how it would matter here, but probably it would.

Tomasz Chmielewski

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