buildworld: lib/libc: install: short write to libc.so.7.debug: [_libinstall] Error code 71

[Graham Perrin]

On 20/11/2020 09:57, Graham Perrin wrote:
> On 16/11/2020 09:27, Graham Perrin wrote:
>> Attempting to build r367615 on Friday 13th:
>>
>> …
>>
>> ===> lib/libprocstat/zfs (install)
>> install -U  -C -o root -g wheel -m 444 
>> /usr/src/lib/libprocstat/libprocstat.h 
>> /usr/obj/usr/src/amd64.amd64/tmp/usr/include/
>> ===> lib/libc (obj,all,install)
>> install -U  -C -o root -g wheel -m 444   libc.a 
>> /usr/obj/usr/src/amd64.amd64/tmp/usr/lib/
>> install -U  -s -o root -g wheel -m 444   -S  libc.so.7 
>> /usr/obj/usr/src/amd64.amd64/tmp/lib/
>> install -U  -o root -g wheel -m 444    libc.so.7.debug 
>> /usr/obj/usr/src/amd64.amd64/tmp/usr/lib/debug/lib/
>> install: short write to 
>> /usr/obj/usr/src/amd64.amd64/tmp/usr/lib/debug/lib/libc.so.7.debug: 
>> 393216 bytes written, 7462472 bytes asked to write
>> *** [_libinstall] Error code 71
>>
>> make[4]: stopped in /usr/src/lib/libc
>> 1 error
>>
>> make[4]: stopped in /usr/src/lib/libc
>> root at mowa219-gjp4-8570p:/usr/src #
>
> The same problem – short write to 
> /usr/obj/usr/src/amd64.amd64/tmp/usr/lib/debug/lib/libc.so.7.debug – 
> when attempting buildworld of r367847.
>
> If it's relevant: I'm using r367081 for these attempts.

The same problem when attempting buildworld of r367923. Prior to this I 
performed a fresh checkout of /usr/src

What might cause these failures?

If it's relevant: I have compression set to gzip-9 for the ZFS dataset 
that mounts at /usr