4.2.20 : Volume expansion will not work beyond 16 TB...

Amien wrote:

tranas:/var/log/frontview# resize2fs -pf /dev/c/c resize2fs 1.42.3 (14-May-2012) Filesystem at /dev/c/c is mounted on /c; on-line resizing required old_desc_blocks = 1045, new_desc_blocks = 1394 resize2fs: Permission denied to resize filesystem dmesg do EXT4_IOC_RESIZE_FS EXT4-fs warning (device dm-0): ext4_resize_fs:1675: No reserved GDT blocks, can' can this be fixed. anyone knows what is causing this?

Volume expansion cannot cross the 16 TiB boundary - the linux expansion tools fail because the block addresses aren't correctly expanded from 32 bits to 64. That limitation is listed in several places in the forum, and is also a limitation listed in the release notes.

If that is what is happening to you, the only way to overcome it is to do a factory reset with all disks in place - which requires all data and the configuration to be restored from backup.

On the other hand, if you already had a volume size that was > 16 TiB then it should have expanded (though the 8 TiB growth limit from the starting point still applies).