Category Archives: FreeBSD

Anything related to FreeBSD

Migrating ZFS from mirrored pool to raidz1 pool

I have a few FreeBSD servers I want to virtualise. They all use ZFS for storage, so I figured a zfs send/receive operation would suffice.

The tricky part is estimating how large the disks on the receiving end must be. The raidz1 pool will be comprised of three (virtual) disks, After trial and error, I arrived at this equation: Continue reading Migrating ZFS from mirrored pool to raidz1 pool

MySQL 5.7.12 refusing to run due to innodb_system data file ‘/var/db/mysql/ibdata1’ being too small

One of my MySQL 5.7.12 instances refused to start after upgrading to FreeBSD’s MySQL port version 5.7.12_1, claiming:

2016-05-18T11:03:26.688719Z 0 [ERROR] InnoDB: The Auto-extending innodb_system data file '/var/db/mysql/ibdata1' is of a different size 4864 pages (rounded down to MB) than specified in the .cnf file: initial 8192 pages, max 0 (relevant if non-zero) pages!

“Googling” the error message led me to I added the following line to the [mysqld] section in /var/db/mysql/my.cnf:

innodb_data_file_path = ibdata1:10M:autoextend

At least MySQL is happy.

From the error message I deduced that the current ibdata1 file has a length equal to 4864 pages × 16 KiB/page = 77824 KiB = 76 MiB, while MySQL 5.7.12 expects this to be at least 8192 pages × 16 KiB/page = 131072 KiB = 128 MiB. The current length was confirmed by running ls -l /var/db/mysql/ibdata1:

-rw-r-----  1 mysql  mysql  79691776 18 mai 13:03 /var/db/mysql/ibdata1

In the long run it’s better to retire the old /var/db/mysql/my.cnf in favour of the “new” /usr/local/etc/mysql/my.cnf.

portupgrade uninstall error, broken pipe

I too was bitten by the portupgrade uninstall error, due to broken pipes, on my laptop running FreeBSD/amd64 stable/10. Others have identified the file 5.26 utility as the culprit, introduced in stable/10 as r298920.

Watch PR 209211 for any progress. base/head was corrected at r299234, and stable/10 will follow soon. Continue reading portupgrade uninstall error, broken pipe

Memory leaks in recent stable/10 kernel

All FreeBSD systems under my care got upgraded last Friday to fix some NTP bugs. That upgrade introduced a new bug in the kernel. The bug first appeared at r298004 in base/head, and later at r298134 in base/stable/10. The i386-based systems were more notably affected than the amd64-based systems, as the former typically has less memory than the latter. Continue reading Memory leaks in recent stable/10 kernel