https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238708
Bug ID: 238708
Summary: remount-ro hangs
Product: Base System
Version: 11.2-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Unfortunately currently I have not enough information about this problem, but
I'm sure there is some problem or problems.
1) multiple times I observed very long remount-ro (mount -u -o ro) for some
partition with a lot of disk activity from mount program during that. All that
was some time ago and currently I forgot details. I'm not sure that this issue
still exists in 11.2-RELEASE but i think it is related to next one.
2) Recent one:
"mount -u -o ro" was hanged for a few second and then wrote "mount:
/path/to/mountpoint: Resource temporarily unavailable"
Second attempt of "mount -u -o ro" resulted in deadlock in "suspwt" state of
mount program. A lot of processes was deadlocked in state "suspfs". Not sure
which of them appeared first.
There was no disk activity (in gstat) for remounted partition during this
deadlock.
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