ZFS not observing desired memory limits?

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Re: ZFS not observing desired memory limits?

Postby znubee » Wed Jan 11, 2017 10:48 am

Thank you Brendon! I will try today if possible.
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Re: ZFS not observing desired memory limits?

Postby znubee » Wed Jan 11, 2017 9:26 pm

Brendon, I hit a little road bump here. I followed the instructions here:
https://openzfsonosx.org/wiki/Install

I also changed the zfsadm to have "knight" instead of master:
Code: Select all
export BRANCH="knight"
export SPL_BRANCH="knight"
export ZFS_BRANCH="knight"


After this everything seemed to build fine until I got to:
Code: Select all
cd zfs
sudo make install


At this point I received the following error:
Code: Select all
Undefined symbols for architecture x86_64:
  "_dm_inuse", referenced from:
      _check_slice in zpool_vdev.o
  "_libdiskmgt_fini", referenced from:
      _main in zpool_main.o
  "_libdiskmgt_init", referenced from:
      _main in zpool_main.o
ld: symbol(s) not found for architecture x86_64


In context:
Code: Select all
3 warnings generated.
  OBJCXXLD InvariantDisks
 /usr/local/bin/gmkdir -p '/usr/local/bin'
  /bin/sh ../../../libtool --silent  --mode=install /usr/local/bin/ginstall -c InvariantDisks '/usr/local/bin'
make[4]: Nothing to be done for `install-data-am'.
make[4]: Nothing to be done for `install-exec-am'.
make[4]: Nothing to be done for `install-data-am'.
Making install in arcstat
 /usr/local/bin/gmkdir -p '/usr/local/bin'
 /usr/local/bin/ginstall -c arcstat.pl '/usr/local/bin'
make[3]: Nothing to be done for `install-data-am'.
Making install in zconfigd
  CC       zconfigd.o
  CCLD     zconfigd
 /usr/local/bin/gmkdir -p '/usr/local/bin'
  /bin/sh ../../libtool --silent  --mode=install /usr/local/bin/ginstall -c zconfigd '/usr/local/bin'
make[3]: Nothing to be done for `install-data-am'.
Making install in zfs
  CC       zfs_iter.o
  CC       zfs_main.o
  OBJC     zfs_osx.o
  OBJCLD   zfs
 /usr/local/bin/gmkdir -p '/usr/local/bin'
  /bin/sh ../../libtool --silent  --mode=install /usr/local/bin/ginstall -c zfs '/usr/local/bin'
/Applications/Xcode.app/Contents/Developer/usr/bin/make  install-exec-hook
echo "prefix "
prefix
/usr/local/bin/gmkdir -p //usr/local/bin
/bin/ln -f //usr/local/bin/zfs //usr/local/bin/mount_zfs
/bin/ln -f //usr/local/bin/zfs //usr/local/bin/umount_zfs
make[3]: Nothing to be done for `install-data-am'.
Making install in zpool
  CC       zpool_iter.o
  CC       zpool_main.o
  CC       zpool_util.o
  CC       zpool_vdev.o
  CCLD     zpool
Undefined symbols for architecture x86_64:
  "_dm_inuse", referenced from:
      _check_slice in zpool_vdev.o
  "_libdiskmgt_fini", referenced from:
      _main in zpool_main.o
  "_libdiskmgt_init", referenced from:
      _main in zpool_main.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [zpool] Error 1
make[1]: *** [install-recursive] Error 1
make: *** [install-recursive] Error 1


Do you know what could be going on here? I am on 10.12.2 with Xcode 8.2.1.

FWII I switched back to "master" and zfs build worked and the kexts loaded right up. So something must be broken in "knight" or I didn't switch the branch correctly? Or..?
znubee
 
Posts: 13
Joined: Mon Jul 18, 2016 7:33 am

Re: ZFS not observing desired memory limits?

Postby Brendon » Wed Jan 11, 2017 11:07 pm

Hi,

Nothing wrong with knight! Those symbols are from a library added a few months back now.

Make sure your zfsadm is up to date.

zfsadm -b knight -l
then the usual make installs should do it.

The relevant library is libdiskmgt.

-Brendon
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Re: ZFS not observing desired memory limits?

Postby znubee » Thu Jan 12, 2017 7:26 am

Brendon, you were right. All it took was the right arguments "zfsadm -b knight -l" instead of trying to modify the zfsadm file itself. It built just fine this time. Is there anything in particular I should watch for? Any stats I should poll? Any settings I should tweak?

Thank you!
znubee
 
Posts: 13
Joined: Mon Jul 18, 2016 7:33 am

Re: ZFS not observing desired memory limits?

Postby znubee » Fri Jan 13, 2017 7:25 am

"Knight" is performing MUCH better. Right now kernel task is staying steady at under 8 GB after 10 hours of uptime and I removed the previous configuration script I was using. System is much more stable. I still have over 70 GB memory free and I've not seen this ever with ZFS.
znubee
 
Posts: 13
Joined: Mon Jul 18, 2016 7:33 am

Re: ZFS not observing desired memory limits?

Postby RobRehnmark » Fri Jan 13, 2017 9:59 pm

I just installed Knight too.
I have the arc capped at 12 GB and arc meta at 9 GB but it doesn't seem t be gobbling up that memory as it did before.
And I think it's running better with no zero read speed episodes during the scrub.
Super grateful to the people developing OpenZFS on OS X!
RaidZ2 working well for storing my data, OS X Server share for Time Machine, FCPX, iTunes, Photos, etc. on my Hackinstosh.
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Re: ZFS not observing desired memory limits?

Postby znubee » Thu Feb 09, 2017 8:39 am

OK, so I had a crazy experience this morning. Last night I left Server.app run over night due to it wanting to change permissions on a share I have. I removed a user and added a user. Server.app hung from what I assume needing to apply access permissions to the zfs volume I have set up on that tank (I also have it set to be HFS+ compatible). After coming back to the system this morning, I found my entire system out of memory. After killing enough processes over the course of a very patient and nightmarish hour, I managed to ssh in and run top to find that kernel_task was using 113GB of memory. No matter how many processes I killed, the system stayed at the upper bounds with only about 45 MB of memory free. So a sudo reboot finally saved the day (I didn't want to do it until I found out what process was consuming so much memory).

I have to think now that ZFS acted strange with all of the permission / ACL changes from Server on a large share like this and so it went memory hog crazy. Anyone see this kind of behavior before and is there a solution?
znubee
 
Posts: 13
Joined: Mon Jul 18, 2016 7:33 am

Re: ZFS not observing desired memory limits?

Postby znubee » Fri Feb 10, 2017 2:33 am

Aside from the last question, is the current branch now merged with knight and should I go ahead and upgrade to it or the current 1.6.1 tag?
znubee
 
Posts: 13
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