On Mon, Apr 22, 2013 at 10:52 AM, Meike Stone <meike.stone@googlemail.com> wrote:
Hello
I don't think so, in general. Is it even a meaningful question? i.e. does a file always reside entirely in one PV?
In the VG are 4 PVs. On this server is running a LDAP database since 3 years. But now, after adding an new (large, about 10Gbyte) database, tis new database it is painful slow. I want to know, where are the files located from the both databases.
Thanks Meike
You should evaluate iostat -d. I don't have lvm setup on my laptop, but I believe it will show you i/o activity at both the PV level and the LV level so you may be able to correlate which PVs are busy when you are accessing the database. It is in the sysstat package I believe. (sudo zypper in sysstat; iostat -d 10;) There is also tool "xlatencytop". I don't know how to use it effectively, but Linda recommended it a month or two ago for troubleshooting poor disk i/o performance. Greg -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org