I have a fresh Lucid Lynx (Ubuntu 10.04) running on a laptop. where I defined the filesystems as:
- mount point / on ext4 (46 Gb)
- mount point /home on jfs (63 GB)
- swap as 3 Gb
I left the machine over night to do some task, without AC power supply. next day in the morning I found it on standby, task completed, but filesystem was not reachable. it gave me I/O error
it seems that there is a problem with jfs and standby.
anyways, to avoid any hassle, I want to move this mount point from jfs format to ext4.
can I do this without losing data and without the need to place the data in a temporary location until transformation is done?
sorry to mention that, but I recall back in the windows days, we would change a FAT16 to FAT32 or a FAT32 to NTFS without having to lose the data. I hope this is available on Linux.
Update The /home filesystem was xfs not jfs, and it seems there is a bug with this filesystem for some reason, I had to re-install the OS twice until I ended up with ext4 for the entire /
However, as a conclusion, it seems that there is no way to make a conversion