https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=244693
Bug ID: 244693
Summary: gmirror configure priority does not take an effect
until reboot?
Product: Base System
Version: 12.1-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: s...@spy.zp.ua
`gmirror label -hvb prefer test /dev/gpt/test1 /dev/gpt/test2`
gmirror sets priority by default:
/dev/gpt/test1 -> 0
/dev/gpt/test2 -> 1
when you run `dd if=/dev/mirror/test of=/dev/null` you can see in gstat/iostat,
that /dev/gpt/test2 is loaded for read.
then after `gmirror configure -p 5 test /dev/gpt/test1`, running `dd
if=/dev/mirror/test of=/dev/null` you can see, that /dev/gpt/test2 is still
used for read.
after reboot, changes take effect, and /dev/gpt/test1 really starts to be used
for read operations.
there are no way to reload gmirror to apply changes without reboot, except this
strange way, when you remake mirror with the "right" devices order:
`gmirror stop test; gmirror label -hvb prefer test /dev/gpt/test2
/dev/gpt/test1`
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