Aleksander Podsiadły wrote:
Dnia 2009-11-21, o godz. 19:17:36
Eric Shubert <[email protected]> napisał(a):
David Milholen wrote:
Hi All,
[...]
here is the output of the df command
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sdb1 240362656 16316904 211835952 8% /
/dev/sda1 101086 11843 84024 13% /boot
none 2047316 0 2047316 0% /dev/shm
Any suggestions on this would be great..
TM
Dave
[...]
For QMT, I think I'd
use: / - 8G
/tmp - 1G
/var - 2G
swap - 1-2 times RAM
/home - whatever's left
That should get you started. Holler as you have questions, and we'll
do what we can to help out.
Oh, and please take notes. You might want to write a how-to for the
wiki when you're done. ;)
1 GiB for /tmp and 2 GiB for /tmp is to too little, multiply it by
10. :)
You might want to make these a little bigger I suppose, especially if
you're running things other than QMT on it. I think that 10x is
excessive though. Doubling them should be sufficient.
You also might consider setting aside a sizable chunk of the VG for
expansion. Then you can grow whichever LV might need it as you see where
your utilization is going.
There is configuration from one of my servers, 2 SATA disks:
8<--
[r...@srv ~]# fdisk -l /dev/sda
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 25 200781 fd Linux raid
autodetect
/dev/sda2 26 60801 488183220 fd Linux raid
autodetect
[r...@srv ~]# df -v
System plików bl. 1K B użyte dostępne %uż. zamont. na
/dev/mapper/VolGroup00-LogVol00
15236080 9083884 5365764 63% /
/dev/mapper/VolGroup00-LogVol01
20642428 8589880 11003972 44% /var
/dev/mapper/VolGroup00-LogVol03
10321208 186784 9610136 2% /tmp
/dev/mapper/VolGroup00-LogVol05
206424760 142058292 53880708 73% /samba
/dev/mapper/VolGroup00-LogVol06
122337340 11556244 104566648 10% /samba1
/dev/md0 194366 38522 145809 21% /boot
/dev/mapper/VolGroup00-LogVol04
103212320 41169756 56799684 43% /home
tmpfs 1025420 0 1025420 0% /dev/shm
[r...@srv ~]# pvscan -s
/dev/md1
Total: 1 [465,56 GB] / in use: 1 [465,56 GB] / in no VG: 0 [0 ]
[r...@srv ~]# lvscan
ACTIVE '/dev/VolGroup00/LogVol00' [15,00 GB] inherit
ACTIVE '/dev/VolGroup00/LogVol05' [200,00 GB] inherit
ACTIVE '/dev/VolGroup00/LogVol04' [100,00 GB] inherit
ACTIVE '/dev/VolGroup00/LogVol03' [10,00 GB] inherit
ACTIVE '/dev/VolGroup00/LogVol06' [118,53 GB] inherit
ACTIVE '/dev/VolGroup00/LogVol01' [20,00 GB] inherit
ACTIVE '/dev/VolGroup00/LogVol02' [2,00 GB] inherit <-- swap
8<-- EOT
In filesystem /tmp sometimes there are big files, once a week logwatch
analyzes logs, big files if you have strong firewall rules. 5 GiB for
tmp is the safe minimum.
In /var filesystem are mysql databases, all logs, standard http serwer,
ftp and many, many others. On my server I listed above /var/www is
symbolic link to /home/www.
Yes, if you have other things on the host besides QMT, you might need
more headroom in these areas. Or if you have thousands of users.
IMO to migrate you have to reinstall OS. Backup
separately /home, /var, /etc, /usr/local/bin and maybe something
from /usr/share (i.e. squirrelmail). If you have linux with selinux use
star, not tar. You can do backup to another linux machine using ssh and
star. You can use tape backup or to DVD. Remember before backup files to
down all services that writes to /var (i.e. mysql, qmail and so on).
Reinstalling is almost always the easiest way to do a migration.
Sometimes it's not an option though, and it's not always necessary.
Do be sure to have everything backed up, no matter how you do the
migration. You can get a 1TB external drive for <$100 these days. Of
course, moving 1TB across a USB connection takes quite a while (like 14
hours or so at best).
--
-Eric 'shubes'
---------------------------------------------------------------------------------
Qmailtoaster is sponsored by Vickers Consulting Group
(www.vickersconsulting.com)
Vickers Consulting Group offers Qmailtoaster support and installations.
If you need professional help with your setup, contact them today!
---------------------------------------------------------------------------------
Please visit qmailtoaster.com for the latest news, updates, and packages.
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
