Open Source

system freezes up with lots of sonewconn Listen queue overflow

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I recently added 10 new HDD to a system which already had 10 HDD (now a total of 20). The HDD are split into two zpools: $ zpool list NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT system 27T 22.1T 4.93T – 19% 81% 1.00x ONLINE – tank_data 45.2T 26.3T 19.0T – 37% 58% 1.00x ONLINE – zoomzoom 436G 9.67G 426G – 6% 2% 1.00x ONLINE – The zoomzoom zpool is […]

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Flashing an LSI SAS 9201-16i

2 Comments / Disks, FreeBSD, hardware, HBA / By /

WARNING: This did not work. It succeeded, without error, but the card did not work. There will be a new blog post soon. Yesterday, a new LSI SAS 9201-16i arrived. I bought it on eBay from a supplier in China and paid for expedited shipping. I offered US$250 for their $338 listing and it was accepted. Shipping was another $30. It arrived 6 days later. Why do I need one? The system in

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leapsecond file (‘/var/db/ntpd.leap-seconds.list’): expired less than N days ago

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After upgrading all my servers to FreeBSD 10.3 last weekend, I started to see these messages in the logs: Aug 3 21:15:19 slocum ntpd[29456]: leapsecond file (‘/var/db/ntpd.leap-seconds.list’): expired less than 64 days ago I found this post which suggested running service ntpd fetch but that did not fix it. While debugging the issue, I added ntp_leapfile_fetch_verbose=”YES” to /etc/rc.conf, which provides more output to the fetch command: $ sudo service ntpd fetch ntp_src_leapfile version

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PGCon 2016 charity auction

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Every year PGCon holds a charity auction as part of the closing session. All proceeds go to The Ottawa Mission, a local group. The auction includes items you would keep as art, and some you would consume before you left town. Others, such as empty paper bags or cardboard boxes are left in the recycling bin. It is all in good fun. 1 Chocolate from Japan $20.00 2 Elephant with cloud $220.00 3

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Adding SLOG to a zpool

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I have recently added two 480 GB SSDs to a 10 x HDD raidz2 system. The SSDs will be mainly used for spooling to tape during backups, but I’m going to use a small part of it for a SLOG. Not all systems benefits from a SLOG (Separate intent LOG), but synchronous writes, such as databases, do. All ZFS systems have a ZIL (ZFS Intent Log); it is usually part of the zpool.

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Importing a zpool and renaming it

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Last night, I moved a SAS card and had to renumber some devices. I also moved two SSDs into the same box (see photos). Those SSDs were the boot drives from the system from which I pulled the SAS drive. That box, tape01, contains the Bacula configuration file I need for this new box. I know, I know. Why not use Bacula to restore that file. That would be too easy. I want

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Adding in a SAS card renumbered my devices

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Last night, I added a SAS card into a box which is connected to a tape library (photos here). After starting up the box, Nagios reported that the tape device was no longer present. I first added such checks back in 2012 and updated them for more recent acquisitions. This means that the copy-to-tape jobs did not run last night, because there was no sa0, instead, there was an sa1, which was not

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Adding a failed HDD back into a ZFS mirror

Leave a Comment / Disks, FreeBSD, hardware, ZFS / By /

I do have a FreeBSD-11 box, cuppy: $ uname -a FreeBSD cuppy.int.unixathome.org 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r279394: Sat Feb 28 21:01:21 UTC 2015 dan@cuppy.unixathome.org:/usr/obj/usr/src/sys/GENERIC amd64 $ That box is used mostly for testing and/or erasing DLT tapes. The current status of that box is not healthy. It’s running fine, but it is not optimal: Let’s fix this. Background Why is one drive upset? Because I installed FreeBSD onto it. Why? I don’t know,

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