Thank you Eric,
Your help are welcome. I'm not an expert on LVM, but if I know something to solve the problem, I will help them. I participated on Debian-users list, squid, qmail and ldap, now I'm migrating my technical knowledge to LVM, openstack and distributed file system like ceph, it's a new world for me.
I'm studying my case yet, all disks are over SAN IBM storage, so hdparm in my case will not work at all. Unfortunately I don't have any support on OS system (Centos), if I find something new I will post here.
Thank you
Marcos Dutra
2015-02-13 18:37 GMT-02:00 service hofman <service.hofman@googlemail.com>:
Say something about yourself
would you like to do something,
more for others.
are you able to help you,
the problem is not knowing.
but the time spent.
as to what should be excellent .
what you are doing nothing,
what you can do for others.
LVM is a good start.
but much remains to be done.
look on the transport speed ,
your hdd . what you are doing is pointless.
why ?
a transport speed of the system.
my to 6Gb/s copy file
hdd has 4Gb/s copy file
? check speed system and hdd.
and tell me that I could change
Now, ...
Before you change anything,
See how it works. Do not test .
You have always help Adding sutfix --help
or use the performance
prefix man
And always cheak
/usr/share/doc/ and read all the book
Install every doc book
Ok.
By test recovery Hdd is Not LVM
try not give to mount for system LVM,
Because you lost again ....
First
Look
Install hdparm
hdparm -h --help.
Ask for speed.
Hdparm -Tt
Hdparm -iI
fdisk /dev/sdX
pvs -o pv_all,gv_all,lv_all,seg_all
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