http://blog.charlies-server.com/2006/09/26/lvm-moving-around-drives-unhappy Sat, 02 Jul 2011 20:48:48 +0000 hourly 1 http://wordpress.org/?v=3.3.1 http://blog.charlies-server.com/2006/09/26/lvm-moving-around-drives-unhappy/comment-page-1#comment-127 Hasan Thu, 16 Nov 2006 14:00:45 +0000 http://newblog.charlies-server.com/2006/09/26/lvm-moving-around-drives-unhappy/#comment-127 No such similar issues here yet, though I haven't really taken a close look at it (will do so and report any relevant findings here, if there are any). What's the CPU in your server? No such similar issues here yet, though I haven’t really taken a close look at it (will do so and report any relevant findings here, if there are any). What’s the CPU in your server?

]]> http://blog.charlies-server.com/2006/09/26/lvm-moving-around-drives-unhappy/comment-page-1#comment-126 steve Thu, 16 Nov 2006 09:45:20 +0000 http://newblog.charlies-server.com/2006/09/26/lvm-moving-around-drives-unhappy/#comment-126 greetings! I use lvm to manage virtual machine storage on my cluster of xen host machines, for several reasons: it abstracts nicely from the underlying media, is inherently well supported by xen, and is easily migrated from host to host. However, under high i/o load, it sometimes appears that the kernel module is a (slight) bottleneck. This is not a major issue, but perplexing nonetheless, given that - while expected to be marginally slower than raw disk access - lvm is fairly speedy. I'm using sata II and a tyan server board; I do not expect the hardware to be a limitation. Have you by any chance noticed similar issues? greetings! I use lvm to manage virtual machine storage on my cluster of xen host machines, for several reasons: it abstracts nicely from the underlying media, is inherently well supported by xen, and is easily migrated from host to host. However, under high i/o load, it sometimes appears that the kernel module is a (slight) bottleneck. This is not a major issue, but perplexing nonetheless, given that – while expected to be marginally slower than raw disk access – lvm is fairly speedy. I’m using sata II and a tyan server board; I do not expect the hardware to be a limitation. Have you by any chance noticed similar issues?

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