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zfs: setting compression and adding new vdevs

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If you read my recent posts, I’m replacing an existing zpool with new devices. At first, I went to copy the old zpool to a new zpool. I then decided instead of copying, to replace. I’m also going to see about compression. I’m sure it won’t take effect, because replace is a block-by-block copy, or so I think. We’ll confirm. Before Here is the zpool, really, just the top-level filesystem. Notice how compression […]

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Moving a zpool to new devices – after the syncoid copy – oh wait, zfs replace

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This morning, as I was typing the subject of this blog post, I realized I don’t have to do this copying. The new devices are staying in this host. It is better for me to add the new devices to the zpool and remove the old devices. That is so much easier. The existing zpool can stay in use and there is no interruption in service. NOTE: after publishing this entry, I realized

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Running short on space on the FreshPorts development zpool

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It’s been some time since I asked for public donations for hardware. In this case, I’m asking for donations to buy two more storage devices to expand this zpool: [18:08 r730-01 dvl ~] % zpool list data02 NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT data02 1.73T 1.39T 351G – – 66% 80% 1.00x ONLINE – Most of the space is used for FreshPorts, however it is not for the

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Swapping zpools – moving from using main_tank to using data

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As mentioned in Doing a bit of stress work on a new HDD, I have a failing 5TB drive which is going to be replace by a 4TB drive. Only about 1.45TB are used, so there’s plenty of space to grow. If you get one thing from this post, don’t be downsizing zpools like this. I would have had much less work and opportunity for error, if I had returned that 4TB drive

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Doing a bit of stress work on a new HDD

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As foreshadowed in x8dtu – drive problems, I will be visiting a data center soon to replace a 4TB HDD. The replacement HDD arrived last night. It was unceremoniously tossed onto the front porch by the courier. However, it was properly packaged. I’m sure it’s fine. The original idea: put this drive into a host, and write some data to it, to exercise it a bit. As you will soon learn, that is

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Using ~/.ssh/authorized keys to decide what the incoming connection can do

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~/.ssh/authorized_keys allows you to specify the command run by the incoming ssh connection. In this post: FreeBSD 14.2 I was searching for a previous blog post to give you some background. I failed. I backup my Bacula database and my Bacula configuration via rsync. These backups go to more than one host. The following are lines from ~rsyncer/.ssh/authorized-keys on my dbclone host – which gathers database backups from various hosts. The above appears

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Problems with OpenVPN when server is FreeBSD 14.2 and client is 14.1

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After replacing an existing gateway with new hardware, the OpenVPN connections had issues. The clients would connect, but non-trivial amounts of traffic would cause errors. This post contains a workaround, by upgrading the OS. I would like to know the cause. In this post, these are the version in use: FreeBSD 14.2 (for the OpenVPN server and some of the clients) FreeBSD 14.1 (for some of the clients) OpenVPN 2.6.13 (on the server

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New vuln is out – where do I have that installed? – SamDrucker

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I abandoned this post back in March h202 because I was unable to get keycloak to contact samducker. I’m publishing it now mostly because of SamDrucker. keycloak is a vnet jail. Interesting things happen there. From time to time, security issues are found within software. The FreeBSD package management system relies upon pkg-audit and the Vulnerability database to alert system administrators that attention is required. Case in point, My Nagios monitoring is showing

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