On 09/15/2015 02:41 AM, Zdenek Kabelac wrote:
If you don't mind dropping existing snapshot and creating new 'old-snapshot' - using larger block size (i.e. 32K (or even more) instead of 4K) may improve speed of disk reading noticeable (at the price of copying larger chunks when modifying disk blocks - depends on use-case)....
Okay, good info to have.
And if you don't mind replacing your ancient kernel and trying some newer one - there have been some 'read' order improvement for this old-snapshot target made as well - so you may at least try if there will be any noticeable change (actually would be interesting just to get report how much faster it boots when you only exchange kernel for a boot - you don't have to use it - just measure boot speed)
This is essentially a custom distro, so changing just the kernel is a bit complicated. However, I have a newer version that I want to test with which has a newer kernel but the same version of LVM, so that should give some good data.
Chris _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
