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tests: improve lib wipefs_a

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in wipefs fallback, use limited dd and mdadm --zero-superblock
to avoid writing to entire dev in case dev space is provisioned
on write.
This commit is contained in:
David Teigland 2019-10-04 11:04:44 -05:00
parent 414f903cdc
commit a22729a557
1 changed files with 2 additions and 1 deletions
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3
test/lib/aux.sh
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@ -804,7 +804,8 @@ wipefs_a() {
if wipefs -V >/dev/null; then
wipefs -a "$dev"
else
dd if=/dev/zero of="$dev" bs=1024 || true
dd if=/dev/zero of="$dev" bs=4096 count=8 || true
mdadm --zero-superblock "$dev" || true
fi
}