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iam-TJ

1455

Karma

2016-02-23

Created

Recent Activity

  • Commented: "Synology Lost the Plot with Hard Drive Locking Move"

    To expand on this with an example. Adding a new device we'll call sdz to an existing Logical Volume Manager (LVM) Volume Group (VG) called "NAS" such that all the space on sdz is instantly available for adding to any Logical Volume (LV):

      pvcreate /dev/sdz
  vgextend NAS /dev/sdz
    Now we want to add additional space to an existing LV "backup":

      lvextend --size +128G --resizefs NAS/backup
    *note: --resizefs only works for file-systems supported by 'fsadmn' - its man-page says:

    "fsadm utility checks or resizes the filesystem on a device (can be also dm-crypt encrypted device). It tries to use the same API for ext2, ext3, ext4, ReiserFS and XFS filesystem."

    If using BTRFS inside the LV, and the LV "backup" is mounted at /srv/backup, tell it to use the additional space using:

      btrfs filesystem resize max /srv/backup

  • Submitted: "Debian Testing/Trixie removes systemd-resolved"

    36 points3 comments

    Debian's systemd maintainer today removed both systemd-resolved and systemd-nspawn packages [0] from Testing/Trixie/Debian 13 - soon to be in feature freeze - due to disagreements with the Technical Committee [1].

    For operators already using Testing/Trixie/Debian 13 this w...

  • Commented: "How fast the days are getting longer (2023)"

    I have a wake-alarm[0] that triggers 30 minutes before civil twilight, that is roughly 60 minutes before local sunrise.

    In the northern hemisphere at 52 degrees it gets earlier by about 2 minutes each day (additional 4 minutes of daytime).

    So I get more sleep and short days in winter and less sleep and longer days in summer. It's liberating basing schedule on it and not some arbitrary time.

    [0] https://f-droid.org/packages/com.forrestguice.suntimeswidget...

  • Commented: "Alphabet spins out Taara – Internet over lasers"

    For Starlink the User Terminal (antenna a.k.a. "Dishy") is a phased array. It tracks the satellite as it passes from west to east. Each satellite is in view for around 15 seconds - the phased array instantly flips from east to west and acquires the new in-view satellite in microseconds. There's no degradation in almost all 'flips' especially if the U.T. has an unobstructed view of the sky.

  • Commented: "The IPv6 Transition"

    Yes, I use direct IPv6 peer-to-peer connections both outbound and inbound using the delegated prefix.

    Even for a changing prefix, if operating a DNS authoritative server for a domain, any changes to the prefix can be quickly and automatically updated in both forward (AAAA) and reverse (PTR) resource records provided the TTL for those records is appropriately short, and thus allow almost seamless inbound via FQDNs. I do this with a bind9 (hidden) master locally that notifies external slave servers operated by a highly available, anycast, DNS service.

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