jkoop's questions

I have a server on two separate LANs: enp3s0 (10.0.0.5/24) and tun0 (10.8.0.5/24, openvpn client). I've configured the gateways on both networks to forward packets addressed to the other network to this server. How can I get this server to relay those packet to the other (correct) interface? I've tried all of the iptables stuff I can find.

The server is running Ubuntu Server 20.04.

I apologise if my information here is badly laid out.

I added a cache drive to my zpool by udev id (e.g. sda). Later, I restarted the computer and it was assigned a different udev id (of course). To get it back, I tried zpool replace, zpool import, and zpool online, but none of them worked (maybe I did it wrong?).

Is it possible to re-add a drive to a zpool without wiping it first, or will I have to drop my cache?

Drive IDs

zpool info

> zpool status
  pool: newpool
 state: ONLINE
status: One or more devices could not be used because the label is missing or
    invalid.  Sufficient replicas exist for the pool to continue
    functioning in a degraded state.
action: Replace the device using 'zpool replace'.
   see: http://zfsonlinux.org/msg/ZFS-8000-4J
  scan: scrub repaired 0B in 0 days 13:35:36 with 0 errors on Sun Dec 12 13:59:38 2021
config:

    NAME                                          STATE     READ WRITE CKSUM
    newpool                                       ONLINE       0     0     0
      mirror-0                                    ONLINE       0     0     0
        ata-WDC_WD4002FFWX-68TZ4N0_K3G0HWLB       ONLINE       0     0     0
        ata-ST4000DM000-1F2168_S3013K0S           ONLINE       0     0     0
      mirror-2                                    ONLINE       0     0     0
        ata-ST4000DM000-1F2168_Z300WERG           ONLINE       0     0     0
        ata-WDC_WD4002FFWX-68TZ4N0_K3G0HVSB       ONLINE       0     0     0
    logs    
      ata-KINGSTON_SA400S37120G_50026B7682053DB7  ONLINE       0     0     0
    cache
      sdc                                         UNAVAIL      0     0     0

> zpool version
zfs-0.8.3-1ubuntu12.13
zfs-kmod-0.8.3-1ubuntu12.13

This is with Ubuntu Server 20.04. Here's my terminal session:

joek@comp1:/home/user4$ sudo usermod -R /home/user4 user4
usermod: user 'user4' does not exist
joek@comp1:/home/user4$ sudo useradd user4
useradd: user 'user4' already exists
joek@comp1:/home/user4$ grep user4 /etc/passwd
user4:1010:1011::/home/user4:/bin/sh
joek@comp1:/home/user4$ grep user4 etc/passwd
user4:1010:1011::/home/user4:/bin/sh

I couldn't find an answer anywhere. How can I chroot the user into /home/user4?

Edit:

I haven't created a chroot. I only have a directory with /bin, /home, etc.

The user is used by rsync on someone else's computer to send backups to my computer. I don't want them to have access to everything on my computer.

Legend: Crummy homemade LVM Legend

Mixed: Mixed LV

I need to add space to an existing 1TB mirrored LV (2 1TB disks) with a new 2TB disk yielding 1+2=3TB. How do I do this?

I can't move my data to another FS and recreate my LV as a single linear system (4TB) because the 1TB disks are old.

I recently acquired an Aerohive AP secondhand without a GUI. I reset it by pressing the button for however long. Now I want to set it up as a normal WiFi AP w/o any fancy Hive stuff. Just one SSID with the most bandwidth and range.

I couldn't find a CLI manual for my specific one (AP245X rev. A). I can SSH into it. Any ideas on what commands to run?