online shrink not supported in EXT4_IOC_RESIZE_FS ioctl

David78 · 08-03-2012, 01:45 AM

Hi,

I was referring EXT4_IOC_RESIZE_FS ioctl implementation in linux kernel ver 3.3.8.

It is given in the code that online shrinking not supported.

if (n_blocks_count < o_blocks_count) {
/* On-line shrinking not supported */
ext4_warning(sb, "can't shrink FS - resize aborted");
return -EINVAL;
}

Can anyone please tell the reason why online shrinking is not supported.

Thanks in adavance.

Regards,
Raphel

jefro · 08-03-2012, 08:40 PM

Dual post.

David78 · 08-06-2012, 12:02 AM

true. i have posted in other forum.
Could you please let me know your ideas.
Thanks in advance