Errore nell'esecuzione di partclone

Per salvaguardare il contenuto della partizione sda8 contenente Ubuntu, ho lanciato da fedora il comando:

[email protected] ~]$ sudo partclone.ext4 -d -b -s /dev/sda8 -o /dev/sdh5
Partclone v0.3.20 http://partclone.org
Starting to back up device(/dev/sda8) to device(/dev/sdh5)
Reading Super Block
Elapsed: 00:00:01, Remaining: 00:01:39, Completed:   1,00%extfsclone.c: bitmap free count err, partclone get free:6011292 but extfs get 6014778.
Please run fsck to check and repair the file system
Partclone fail, please check /var/log/partclone.log !

Ho capito che c’è una discordanza sul dimensionamento, ma non ho capito se l’errore riguarda la partizione di partenza (sda8) o quella di destinazione (sdh5)
Anche, guardando il file di log, non ho capito lo stesso:

Partclone v0.3.20 http://partclone.org
Starting to back up device(/dev/sda8) to device(/dev/sdh5)
UID is root.
source=/dev/sda8, target=/dev/sdh5 
open source file/device /dev/sda8
open target file/device /dev/sdh5
Initiate image options - version 0002
Initial image hdr - get Super Block from partition
Reading Super Block
extfsclone.c: test feature as EXT3
extfsclone.c: extfs version is 2
extfsclone.c: extfs block_size 4096
extfsclone.c: extfs total block 11673600
extfsclone.c: extfs used blocks 5658822
extfsclone.c: extfs device size 47815065600
memory needed: 3556352 bytes
bitmap 1459200 bytes, blocks 2*1048576 bytes, checksum 0 bytes
Initial image hdr - read bitmap table
Calculating bitmap... Please wait... extfsclone.c: bitmap free count err, partclone get free:6011292 but extfs get 6014778.
Please run fsck to check and repair the file system

Prima d’ora, nessun problema con partclone