They cannot work with the current tools.
We do translate properly the quota system calls used
by the tools into the 64-bit kernel. However, the
kernel uses a 64-bit time_t in the quota.user and
quota.group records, but the quota tools cannot grok
This also points out another problem wrt. Alpha systems,
you cannot swap ext2 disks with quotas between 64-bit
and 32-bit systems, although it would work if you force
the quota database to be updated at the time of the disk
swap so the quota files are completely rebuilt on the new
A solution will involve some hacks to the quota tools so
they understand the 64-bit kernel quota files. This is
the fastest/easiest way towards a fix at this time.
Fixed in latest build via quota-1.66-6 which has my fixes
for this problem.