> On 15. Sep 2020, at 18.54, Jose Soares <josefdsrsoa...@gmail.com> wrote: > > Thank you, Stuart. > > I am facing this when issuing the dump command of a "large" file system > (2.7TB). > dump command has finished successfully for the other smaller file systems. > > # df -h > Filesystem Size Used Avail Capacity Mounted on > /dev/wd0a 2.0G 237M 1.6G 12% / > /dev/sd0d 10.8T 2.7T 7.6T 26% /home > /dev/wd0d 3.9G 146K 3.7G 0% /tmp > /dev/wd0f 3.9G 956M 2.8G 25% /usr > /dev/wd0g 2.0G 253M 1.6G 13% /usr/X11R6 > /dev/wd0h 5.9G 15.6M 5.6G 0% /usr/local > /dev/wd0j 3.1G 2.0K 3.0G 0% /usr/obj > /dev/wd0i 2.0G 2.0K 1.9G 0% /usr/src > /dev/wd0e 5.9G 106M 5.5G 2% /var > > The only contribution I was able to find via Google was > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=244470 where a similar > problem was being reported also regarding a dump of a large file system, > but for FreeBSD. > > Any suggestion to get the dump working or to better understand what is > happening?
Segfault on dump, tape.c line 335 spcl.c_addr[I], it overflows. A workaround is to raise TP_BSIZE from 1024 to something bigger (maybe 8192?) in /usr/include/protocols/dumprestore.h and recompile dump. Not a proper fix! (Also happened to me maybe a week ago, recent -current, indeed the filesystem was big (2 terabytes)).
