Tag: zfs
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Recent Battle to Use Thunderbird
I am a daily Ubuntu user, and I’ve been been one since 10.04. The use of Snaps in 22.04 took me for a very unhappy drive down frustration lane recently. Around February 2023, both Firefox and Thunderbird appeared with display rendering problems, like the were using bad video driver code. But also, Thunderbird became unkillable.…
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ZFS: third time through
Fascinating–I had just finished a scrub on June 6. Then a drive started dying. Now I’ve attempted to replace it, but an adjacent drive also had errors. I feel like I’m in a bit of a pickle. This snapshot had the error, so I deleted the snapshot and did a zfs clear tank, and the…
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ZFS Snapshot alias
Add this to your .bash_aliases for fun and profit: function Snapshot () { local dst=”” local atnam=”” if [ -z “$1″ ]; then dst=`df -l . | tail -1 |awk ‘{print $1}’` else if [[ $1 = *@* ]]; then atnam=”${1##*@}” dst=”${1%%@*}” fi dst=`df -l “$dst” | tail -1 |awk ‘{print $1}’` fi [ -z…
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Apply ZFS driver settings without reboot
Apply your modprobe.d values without rebooting: egrep -v ‘^#|^\s*$’ zfs.conf \ | while read L; do M=($L) N=${M[2]} P=(${N/=/ }) echo “${P[1]}” > /sys/module/zfs/parameters/${P[0]} done #zfs #linux #bash
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ZFS Rebuild Script
I’ve rebuilt my zfs modules often enough that I’ve written a script to do a clean build that should avoid old kernel modules and old libraries. #!/bin/bash sudo find /lib/modules -depth -type d -iname “spl” -exec rm -rf {} \; sudo find /lib/modules -depth -type d -iname “zfs” -exec rm -rf {} \; sudo find…
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Build OpenZFS on Ubuntu 16.04 from git
I have to import a zpool from one Ubuntu workstation with recent features to a new Ubuntu workstation. The new workstation being a fresh Ubuntu 16.04 Server install. It only has ubuntu-mate-desktop and build-essentials installed. Below is an aggregation of some of the apt install commands I preformed to get things going: apt install dkms…
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Notes on Updating Centos7 to 4.3.3
Upgrades! Sometimes they are a lot of homework. Enabled Centos-Plus repos and elrepo for recent kernels. I figured out I want to install kernel-ml, kernel-ml-headers, kernel-ml-devel. That last one escaped me but is necessary because you need it when you do a dkms install. So after updating that stuff, I was able to dkms install…
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Ubuntu 15.10 and ZFS
Some quick thots on doing this for my workstation: I have six 2TB drives in raid 10 zfs pool, and they would not import to 15.10 because 15.10 ships with (or tries to) zfs 0.6.4.2 I decided on /boot, swap, /, mdadm partitions for OS install needed to do 15.10 server cmdline install for mdadm…
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Crazy Times with zxfer
I’ve started using zxfer that @AllanJude referred me to recently. It does a nice job. My main difficulty was how to get it to work efficiently over the 10Mbps that’s my effective DSL speed. First, I made a copy of zxfer (zmxfer) that incorporates mbuffer. This is a crude hack, but helps me ensure that…
Bitratchet 