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set -x
# create an array, then change the uuid.
mdadm -CR --assume-clean $md0 -l5 -n3 $dev0 $dev1 $dev2
mdadm -S /dev/md0
mdadm -A /dev/md0 --update=uuid --uuid=0123456789abcdef:fedcba9876543210 $dev0 $dev1 $dev2
no_errors
mdadm -D /dev/md0 | grep -s > /dev/null 01234567:89abcdef:fedcba98:76543210 || {
echo Wrong uuid; mdadm -D /dev/md0 ; exit 2;
}
mdadm -S /dev/md0
# try v1 superblock
mdadm -CR --assume-clean -e1 $md0 -l5 -n3 $dev0 $dev1 $dev2
mdadm -S /dev/md0
mdadm -A /dev/md0 --update=uuid --uuid=0123456789abcdef:fedcba9876543210 $dev0 $dev1 $dev2
no_errors
mdadm -D /dev/md0 | grep -s > /dev/null 01234567:89abcdef:fedcba98:76543210 || {
echo Wrong uuid; mdadm -D /dev/md0 ; exit 2;
}
mdadm -S /dev/md0
# Internal bitmaps too.
mdadm -CR --assume-clean -b internal --bitmap-chunk 4 $md0 -l5 -n3 $dev0 $dev1 $dev2
mdadm -S /dev/md0
mdadm -A /dev/md0 --update=uuid --uuid=0123456789abcdef:fedcba9876543210 $dev0 $dev1 $dev2
no_errors
mdadm -D /dev/md0 | grep -s > /dev/null 01234567:89abcdef:fedcba98:76543210 || {
echo Wrong uuid; mdadm -D /dev/md0 ; exit 2;
}
mdadm -X $dev0 | grep -s > /dev/null 01234567:89abcdef:fedcba98:76543210 || {
echo Wrong uuid; mdadm -X $dev0; exit 2;
}
mdadm -S /dev/md0
mdadm -CR --assume-clean -e1.2 -b internal --bitmap-chunk=4 $md0 -l5 -n3 $dev0 $dev1 $dev2
mdadm -S /dev/md0
mdadm -A /dev/md0 --update=uuid --uuid=0123456789abcdef:fedcba9876543210 $dev0 $dev1 $dev2
no_errors
mdadm -D /dev/md0 | grep -s > /dev/null 01234567:89abcdef:fedcba98:76543210 || {
echo Wrong uuid; mdadm -D /dev/md0 ; exit 2;
}
mdadm -X $dev0 | grep -s > /dev/null 01234567:89abcdef:fedcba98:76543210 || {
echo Wrong uuid; mdadm -X $dev0; exit 2;
}
mdadm -S /dev/md0
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