Adding existing memory in sdb1 to sda1

[andrewdps]

Hi,

I'm not sure if this is possible at all in the Linux.But I've a question if there is a way to add the memory from one hard drive to other

Here is the output of disk free space
# df -k
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00 940287756 3320512 888432924 1% /
/dev/sda1 101086 21142 74725 23% /boot
tmpfs 7730504 0 7730504 0% /dev/shm
/dev/sdb1 2884158292 74736 273757667 1% /data


Now,I wanna add a large amount of memory in sdb1 to sda1 to increase the available memory.Is there a way I can do this?

Excuse me if this is a weird question
Andrew

[Irithori]

Harddiscs have a fixed size.
You cannot "transfer memory from one to another"

What *could* be done is assigning directories to partitions and move data from one to another.

That says, 100MByte for /boot is a good size.
Why would you want to change that?

[andrewdps]

We're trying to install an application that may use large amount of disk space to store images, data etc., So,instead of running out of memory in the latter stage I'm trying to maintain a safe memory space.

So,can we make it something like this

Install the software on one drive and store the images,docs,videos etc on other hard drive and let software look in that harddrive while displaying the contents in the web?

[Irithori]

I haven't seen the partition table and the lvm config.
But from what you posted, the partitioning is a bit odd.
950GByte for / is way off (and too crude, if it was the only partition)

For a *server*, I usually use for the system:
2-3GByte /
2GByte /tmp/
4GByte /usr/
8GByte /var/
0,5GByte /boot
But ymmv.

In your case, that would leave a lot of space unused on sda.
And frankly, if possible I would recommend to use smaller disks for the system raid (it is hopefully a raid? )
Because mixing raids for different purposes and (possibly) different raidlevels via lvm complicates the setup and leads to non-isolated problems:
If a "system" raid has a problem, the "data" raid is affected as well and vice versa.

In a more separated setup -small raid1 for the system and big raid for data- also possible problems are isolated.

You have about 2,8TByte on sdb1. Your data will grow beyond that?

[andrewdps]

I appreciate that.

>>>You have about 2,8TByte on sdb1. Your data will grow beyond that?

I guess we've 4 harddrive each of 1TB in which we're using 1TB for installing the software(sda1).Now I'm trying to install the software on sda1 partition which has 846 GB left.We may run out this space as we may install several softwares and data in the coming days.So,is there any way we can use sdb1 space or possibly storing data in sdb1 and accessing the data from sdb1 for the software installed in sda1.

Thanks