Description of problem:
OpenJDK 8, 11, 17 builds started to fail on rawhide x86_64 when they hit a virtualized builder (RHEL 8.5 with RHEL 8.5 qemu-kvm/libvirt on the host; F34 as the guest VM). See also this fedora-infra issue:
https://pagure.io/fedora-infrastructure/issue/10348

Version-Release number of selected component (if applicable):
# rpm -q libvirt
libvirt-6.0.0-37.module+el8.5.0+12162+40884dd2.x86_64

How reproducible:
100% if run on a virtualized VM builder.

Steps to Reproduce:
1. Set up a RHEL 8.5 host on an Intel Xeon Gold (Cascadelake)
2. Install virt tools for hosting VMs (from RHEL 8.5)
3. Install F34 in a guest VM
4. Try to do a mock build of java-1.8.0-openjdk for rawhide on the F34 guest VM (fedpkg clone -a java-1.8.0-openjdk && cd java-1.8.0-openjdk && fedpkg mockbuild --no-cleanup-after)

Actual results:
Random, cryptic build failures. Some example(s):

ERROR: compileproperties: IO error writing to file /builddir/build/BUILD/java-1.8.0-openjdk-1.8.0.312.b07-2.fc36.x86_64/bootbuild/jdk8.build-slowdebug/jdk/gensrc/sun/util/resources/cs/LocaleNames_cs.java
EXCEPTION: java.io.FileNotFoundException: /builddir/build/BUILD/java-1.8.0-openjdk-1.8.0.312.b07-2.fc36.x86_64/bootbuild/jdk8.build-slowdebug/jdk/gensrc/sun/util/resources/cs/LocaleNames_cs.java (No such file or directory)
java.io.FileNotFoundException: /builddir/build/BUILD/java-1.8.0-openjdk-1.8.0.312.b07-2.fc36.x86_64/bootbuild/jdk8.build-slowdebug/jdk/gensrc/sun/util/resources/cs/LocaleNames_cs.java (No such file or directory)
        at java.io.FileOutputStream.open0(Native Method)
        at java.io.FileOutputStream.open(FileOutputStream.java:270)
        at java.io.FileOutputStream.<init>(FileOutputStream.java:213)
        at java.io.FileOutputStream.<init>(FileOutputStream.java:101)
        at build.tools.compileproperties.CompileProperties.createFile(CompileProperties.java:269)
        at build.tools.compileproperties.CompileProperties.main(CompileProperties.java:195)

and/or:

/builddir/build/BUILD/java-1.8.0-openjdk-1.8.0.312.b07-2.fc36.x86_64/openjdk/hotspot/make/linux/makefiles/rules.make:149: Building os_perf_linux.o  (from /builddir/build/BUILD/java-1.8.0-openjdk-1.8.0.312.b07-2.fc36.x86_64/openjdk/hotspot/src/os/linux/vm/os_perf_linux.cpp) (/builddir/build/BUILD/java-1.8.0-openjdk-1.8.0.312.b07-2.fc36.x86_64/openjdk/hotspot/src/os/linux/vm/os_perf_linux.cpp  newer)
gmake[6]: *** No rule to make target 's.os_posix.cpp', needed by 'os_posix.cpp'.  Stop.
gmake[6]: *** Waiting for unfinished jobs....


Expected results:
Successful build of rawhide in mock.

Additional info:
It doesn't reproduce on a Fedora host (F34) and Fedora 34 guest. It doesn't seem to be qemu related (of the host). It doesn't reproduce when the build happens on a physical machine (not virtualized). Failures have been seen with qemu-kvm 6.0.0 and 4.2.0

It might be xfs or libvirt storage related as the failures seem to change and are about files not being present where they should be there.