<p>Hi,</p>
<p>I referred EXT4_IOC_RESIZE_FS ioctl implementation in linux kernel ver 3.3.8.</p>
<p>Implementation specifies tht Online shrinking is not supported. Code is as below.</p>
<p> if (n_blocks_count < o_blocks_count) {<br> /* On-line shrinking not supported */<br> ext4_warning(sb, "can't shrink FS - resize aborted");<br> return -EINVAL;<br> }</p>
<p>Can anyone please tell the reason why online shrinking is not supported.</p>
<p>Thanks in adavance.</p>
<p>Regards,<br>Raphel<br></p>