Change the block size of file system from 4K to 8K

[George Magklaras]

This implies that you cannot safely or reliably change it but you have 
to re-format the fs.., OK?

GM


George Magklaras wrote:
> I assume that you are setting this up with ext3 and hence my answer ties 
> to this. If your filesystem is different, you should say so.
> 
> Note: *In ext3, an 8K block size on the fs is only possible if you use 
> Itanium and other 8K architectures. If your architecture is x86, x86_64, 
> it is not possible to have a block size greater than 4k*. If you try to 
> make an ext3 fs you will fail with an error message similar to this:
> 
> mkfs.ext3: 8192-byte blocks too big for system (max 4096)
> 
> So,if your server architecture can take it, you can
> i)use parted post installation to make the partition and then type the 
> following example (if your partition is called for instance /dev/sda2):
> 
> mkfs -t ext3 -b 8192 /dev/sda2
> 
> ii)There is also kickstart 
> (http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Installation_Guide/ch-kickstart2.html). 
>  From a quick browsing on the RedHat manual, I cannot find the exact 
> switch to specify  block size (must be set with size)
> 
> #part / --fstype ext3 --size=1024...etc
> 
> So, I would recommend number i) as a faster option.
> 
>