https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=205974
Bug ID: 205974
Summary: can't detach devices from zpool
Product: Base System
Version: 11.0-CURRENT
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: freebsd-bugs@FreeBSD.org
Reporter: lifa...@mail.lifanov.com
CC: freebsd-am...@freebsd.org
CC: freebsd-am...@freebsd.org
I migrated a zpool (mirror) from two 1T drives to two 3T drives.
It had two (also mirrored) log devices.
I detached both mirror devices, one at a time, and then replaced both drives,
one at a time with autoexpand turned on.
Then I re-attached the log devices in the same mirrored configuration.
The pool is healthy and seems to be working normally, but I can't detach
devices from it anymore. Any time I try to detach any of the four devices, the
system becomes completely unresponsive.
The software version is the same. The only configuration difference is that the
new pool has 4k blocks versus 512b and also has a different pool name.
After a forced reboot, pool is marked as degraded and I can plug the device
back in and wait for a resilver. The device doesn't become detached.
I can't produce a vmcore because the system becomes completely unresponsive but
doesn't crash.
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