Preamble The other week, we had an issue with our working production data on our ZFS file servers. We have a running service that uses a CIFS share to extract file contents, read in a XML file, and then from that file, build out a directory structure based on a field in that order file.
I won’t get into the horrible details, but we eventually discovered that this service does not halt or error an order if that field is missing! Read More...
If you have google’d for smb.conf settings to max your 1Gb (or 10Gb) ethernet based network and you still cannot seem to get beyond 30MB/sec, make sure you have this option:
socket options = SO_RCVBUF=8192 SO_SNDBUF=8192 Either commented it out, or set the buffer size to 128K (131072). Or larger.
I was helping a friend of mine troubleshoot his ZFS + Samba environment.
He was running FreeBSD 9.0 and Samba 3. Read More...
I’ve been using ZFS on FreeBSD since it was first made available in 7.0, and it was not until FreeBSD 8.2 when NFSv4 ACL’s were implemented.
At $oldJob, I had a list of “To do’s”, really cool things like:
“Integrate Puppet into CMDB”, “Rewrite the Bacula addClient script”, “Build a MooseFS Cluster”… At the top though, I had:
Implement ACL’s on ZFS/Samba fileserver Anyway my $newJob always has a high demand for storage and sharing data. Read More...
I need to share this. When I google for “Samba performance”, I never see real numbers, real configuration files, or real hardware environments. All I read are anecdotal recollections, and that is not good enough. I like numbers, and I’ll let the numbers speak for themselves:
> netstat -I em0 -w 1 input (em0) output packets errs bytes packets errs bytes colls 90166 0 98762637 95363 0 5332847 0 18131 0 24713156 20042 0 1123684 0 4 0 310 1 0 178 0 8 0 518 1 0 178 0 10153 0 10952920 10696 0 598129 0 92990 0 102837002 98476 0 5514994 0 92025 0 102680574 97277 0 5439496 0 92080 0 101799874 97403 0 5448637 0 75348 0 90861608 80972 0 4537737 0 90895 0 100323946 95781 0 5360948 0 89313 0 97371154 94364 0 5278618 0 81363 0 89229738 85861 0 4803589 0 2 0 126 3 0 286 0 I was so shocked that I had to use gstat and zpool iostat to verify the information: Read More...
!!! UPDATE on 12/29/2009!!! Since this blog post seems to get a good amount or hits from google, if you are reading this, please see my updated post: http://www.mywushublog.com/2009/12/freebsd-8-0-a-great-nas-server/ which has some additional information about FreeBSD 8.0 EOF
Lately at work, I’ve been involved with a very large file system that is being export from Solaris 10/ZFS to windows and OS X users via Samba. Even with a very large Sun server (T5220) a lot of users are complaining about the slow performance of the system. Read More...