On 2009.11.28 15:31:47 , Milan Broz wrote: > the logic is simple here > - if readahead is set to auto, it should inherit value from underlying device > for all LVs on that PV > - if there is explicitly set value in metadata, it should always use that > (you can switch back to auto by specifying -r auto) I updated the initramfs and all binaries and configs are the same. While debugging it further I noticed something. Since this is a server I connect via SSH. Immediately after reboot as soon as the ssh daemon started the read-ahead was ok (checked via blockdev). A few seconds later the numbers changed. Looking through my init scripts I saw that the mdadm --monitor daemon was started as well. I temporarily disabled it and checked after a reboot. The numbers did not change. I re-enabled the daemon but the numbers did not change either. I tried to reproduce the problems several times now but did not succeed. Of course this could be a red herring and the problem will re-appear but as it is now it seems LVM is doing the right thing and something else is changing the RA on my setup here. I debug this further the next time the problem shows up. Please mind, in all this tests I only updated the initramfs only once and the problem was still there so I am ruling out a miss-configuration. It looks more likely that the number is changed under special circumstances. Kind regards, Michael _______________________________________________ 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/
