received won't be stuck in nfs_receive.
- nfs_rcvlock: check exceptions before sleeping on the lock.
- nfs_rcvunlock: use cv_broadcast rather than cv_signal to ensure that
lwps which received its reply get woken up.
device controllers, and more specifically raid controllers.
Add a new sensor type, ENVSYS_DRIVE, to report drive status. From OpenBSD.
Add bio and sysmon support to mfi(4). This allow userland to query
status for drives and logical volumes attached to a mfi(4) controller. While
there fix some debug printfs in mfi so they compile.
Add bio(4) to amd64 and i386 GENERIC.
when unmounting the file system in case of a certain timing (and
possibly some other conditions), a thread would wait on a condition
variable, while another thread broadcast the cv and immediately
proceeded to destroy it. The result was a system frozen completely
solid shorly after the process waiting for the cv woke up. So
introduce reference counting to synchronize destruction of the
resources in unmount.
I was able to repeat the problem only on my laptop in some special
cases, so I do not know how common it was. Ironically, killing
the file server process violently instead of unmount() didn't have
this problem because it never entered the unmount path from two
directions.
It was only ever non-zero for zombies, and now doesn't exist.
The 'pstats' field has been valid for zombies for a while (it isn't in
the uarea any more).
Fixes part of build breakage.
- Add POSIX defined system variables and constants of AIO_LISTIO_MAX and
AIO_MAX values. Both with _POSIX_ASYNCHRONOUS_IO, provide them in
sysconf(3) and getconf(1) interfaces.
- Clean up sysconf(3) for handling sysctl nodes dynamically.
Note that the emulation root is linux32 when running i386 linux programs
on an amd64 system.
Note that paths that start /../ are only looked up in the real root.
Modify the bug/note about symlinks not being looked up in the emulation root.
Some of this stuff ought to be in a generic 'emulation' man page.
I think it existed to cache the numbers in kernel memory of a zombie when
proc->p_stats was part of the 'u' area - so got freed earlier and wouldn't
(easily) be accessible from a separate process. However since both the
p_ru and p_stats fields are freed at the same time it is no longer needed.
Ride the recent 4.99.19 version change.
disk framework. This stops ld(4) from returning an error for various
ioctl() requests which actually *did* work. As a result fdisk(8) and
therefore also sysinst(8) work with ld(4) devices once again.
Based on a patch supplied by Todd Kover in PR kern/36244, successfully
tested with ld(4)@icp(4).
Seems to be quite stable. Some work still left to do.
Please note, that syscalls are not yet MP-safe, because
of the file and vnode subsystems.
Reviewed by: <tech-kern>, <ad>
- NetBSD's "newfs" doesn't accept a second (non-option) argument.
Patch provided by Jeff Ito in PR bin/36241.
- Use "sd0" instead of "rp0" because NetBSD's doesnt have a disk driver
called "rp".
- Use "/dev/rst0" instead of "/dev/rst8". With NetBSD's device numbering
scheme a system would have to have 9 tape drives to get "/dev/rst8".
