Mufit Eribol wrote:
Toby Bluhm wrote:
Mufit Eribol wrote:
I have a LV on RAID mounted as /mnt/raid. Then /mnt/raid/var is
symlinked to /var.
I was afraid you were going to say that.
Go back to single user mode.
mkdir /new_var
cd /mnt/raid/var
tar cf - . | ( cd /new_var ; tar xvf - )
Make sure both dirs look the same.
Change the link to /new_var. Or remove the old link & mv /new_var /var.
reboot.
Toby, Thank you for this nice tip. It worked perfectly. The server is
back in the game again.
Just for my learning experience, I would appreciate if you clarify one
point though. Why are you afraid when you hear /mnt/raid/var symlinked
to /var?
Because it can complicate a recovery, as you just experienced.
Why did you feel a need to have /var setup as you did? Did you expect to
fill it up quickly or a need for speed? You also have /tmp separate - do
you expect more than usual activity there?
Perhaps a better question would be - What is the purpose of this
machine? If it's a just a fileserver on a home lan, you don't *need* to
make it complicated, although learning is fun :-).
Running a very active internet facing box with email, mysql, apache,
etc. would probably call for a more complicated setup - which would
actually make recovery & security easier/better.
Here is my fstab:
/dev/md2 / ext3 defaults
1 1 <--- md2 Software RAID1
/dev/md1 /boot ext3 defaults
1 2 <--- md0 Software RAID1
/dev/md0 /tmp ext3 defaults
1 2 <--- md1 Software RAID1
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
LABEL=SWAP-sda3 swap swap defaults,pri=1 0 0
LABEL=SWAP-sdb3 swap swap defaults,pri=1 0 0
/dev/raid_vg0/raid_lv0 /mnt/raid ext3 defaults
0 0 <--- Hardware RAID10
Before, home and var were under /mnt/raid directory and symlinked to
/home and /var. Now, both directories were copied to / (md2 software
RAID1) as new_home and new_var and /home and /var symlinks are now
pointing to these new directories. /mnt/raid (hardware RAID10) which is
the main storage of my server is not being used at the moment.
Instead of using links, may as well just mount it where it belongs.
I am planning to have 2 logical volumes (for home and var separately)
instead of 1. Then, they will be mounted as separate partitions as /home
and /var to /dev/raid_vg0/raid_lv0 and /dev/raid_vg0/raid_lv1,
respectively. Is it a good approach? Please advise.
I'm somewhat simple-minded - I like to keep the system that way :-). I
split the partitions into 3
/
swap
/home
either on a single disk or mirrored ( swap mirrored too ) - no lvm. For
data storage I use lvm on raid on a separate mount point. Not saying you
should do the same - it's just what I do.
--
Toby Bluhm
Alltech Medical Systems America, Inc.
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