The incoming replacement drive
This drive is going into knew, which has a suspect, but still working OK, drive. The replacement procedure has also been documented.
The incoming replacement drive Read More »
hardware
Duplicating a zpool
I have these boot drives, I want to copy them to another. They both happen to be zroot and bootable. I booted from mfsBSD and imported both new and old zroot, using the pool ID shown by zpool import -N. root@mfsbsd:~ # zpool import -N pool: data01 id: 2668514456528412656 state: ONLINE action: The pool can be imported using its name or numeric identifier. config: data01 ONLINE mirror-0 ONLINE gpt/S59VNS0N809087J_S00 ONLINE gpt/S59VNJ0N631973D_S01 ONLINE mirror-1
Duplicating a zpool Read More »
Creating a 4 drive ZFS zpool: stripe over mirrors
In this post, I am creating a 4 drive ZFS pool consisting of two mirror. In this post: I’m booting from mfsBSD 12.1 ZFS Creating partitions On FreeBSD, it is convention to create partitions. It is not necessary, but I don’t use all the space in case a future replacement drive is slightly smaller than these drives. NOTE: I am not, but have not confirmed that this is no longer a problem in
Creating a 4 drive ZFS zpool: stripe over mirrors Read More »
Dell R720 flashing Dell PERC H710 mini into IT mode
Dell PowerEdge Servers are common in #homelab use. The hardware gets sold after it goes out of warranty and they get dumped. Most of the disk cards in these servers come flashed for use with RAID and RAID only. Never use a RAID card with ZFS. Always give ZFS direct access to the drives. I won’t go into the details because the reasons why are easily researched. These cards usually arrive in IR
Dell R720 flashing Dell PERC H710 mini into IT mode Read More »
PDU setttings
This post documents the PDU settings so I know what is plugged in where and the delay they have on power up. pdu1 – before pdu1 – outlet 1 – r720-01 pdu1 – outlet 2 – knew pdu1 – outlet 3 – slocum pdu1 – outlet 7 – LTO4 tape library pdu1 – after pdu2 – before pdu2 – outlet 1 – r720-01 Missing, I can’t find that one. pdu2 – outlet 2
laptop hits load averages: 407.41 128.53 49.18 during start up
I’m not complaining. It’s just very amazing how much work a laptop does to start up. As soon as I can get a terminal session I start: [dan@air01:~] $ w 18:13 up 3 mins, 11 users, load averages: 164.29 42.91 15.80 USER TTY FROM LOGIN@ IDLE WHAT dan console – 31Dec19 230days – dan s000 – 18:12 – -bash dan s001 – 18:12 – -bash dan s002 – 18:12 – -bash dan s003
laptop hits load averages: 407.41 128.53 49.18 during start up Read More »
replacing an existing zroot with a proper zroot
I wrote this post late one night while pondering how to solve this problem. I may have solved it with much less effort. I want to copy a zroot from old drives to new drives. The new drives are in a test box of mine. Once the new drives are configured, I will replace the existing mirror with them. Not shown here, I have already installed FreeBSD 12.1 on the new drives. I
replacing an existing zroot with a proper zroot Read More »
Spare fiber cards
Sometimes I’ll be thinking about the hardware I have which is not in use. I’ll know it exists, but not the details. I’ll be in the wrong part of the house to have a quick look, or I might be nowhere near the house when the topic comes up. This post fixes that. These are the fiber cards I have in the basement. It turns out, they are all the same. I think
tape01
This is a small desktop / short tower case which is connected to a couple of tape libraries. This post replaces a previous post. Partitions [dan@tape01:~] $ gpart show => 40 5860533088 ada0 GPT (2.7T) 40 1024 1 freebsd-boot (512K) 1064 984 – free – (492K) 2048 4194304 2 freebsd-swap (2.0G) 4196352 5856335872 3 freebsd-zfs (2.7T) 5860532224 904 – free – (452K) => 40 5860533088 ada1 GPT (2.7T) 40 1024 1 freebsd-boot (512K)
knew
This post has been replaced by a newer post. For future reference, this is the knew server … oh wait, I think it’s this server which is was mounted in the 4U chassis mentioned in this post. It runs a few jails, including Bacula regression testing services. It is now mounted in a SuperChassis 846E16-R1200B This is the previous post for this system configuration. Photos of the assembly. File systems Paritions zpools Those