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  1. Thread: Image Corruption

    by TheFu
    Replies
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    12

    Re: Image Corruption

    Everyone has made a similar mistake. Different brains are helpful. ;)

    Glad we were able to help you figure it out by triggering something in your mind. YOU figured it out.

    Please help the...
  2. Re: Strange Hard Drive Behavior in Server 18.04

    The drive timing tests seem slow. One of my WD-Blue 1TB HDDs:

    $ sudo hdparm -tT /dev/sda
    /dev/sda:
    Timing cached reads: 18536 MB in 2.00 seconds = 9278.04 MB/sec
    Timing buffered disk...
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    Re: NFS copy performance question

    iperf3 says you have a 100mbps network. That means nfs can't be any faster than that.

    100/8 = .... ? That's the theoretical max performance. Add in 10-20% for protocol overhead ... Looks like...
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    Re: Nomodeset/Black Screen Problem

    When seeking help that is hardware related, always:


    Say which OS you are running - 18.04? Different versions have different answers.
    Say which desktop you are using - Gnome3, Mate, LXQt,...
  5. Re: Confusing page in "Install Ubuntu Desktop" Tutorial

    Dual booting is hardly a basic procedure. If you are really new, perhaps running Ubuntu inside a virtual machine for a few months would make more sense? It is much safer to your Windows install and...
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    Re: SFTP vs Webdev or equivalent

    webDAV has all sorts of security issues. Best to avoid it, but if you can't, only use it on the LAN or with a full, secure, key-based VPN. Setting up openVPN isn't THAT hard, but there are hundreds...
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    Re: NFS copy performance question

    Yep. Avahi has worked for most people the last 5 years or so. My issues were almost a decade ago and I remember all the pain, so it gets purged from all my systems. avahi and nano and...
  8. Thread: Image Corruption

    by TheFu
    Replies
    11
    Views
    12

    Re: Image Corruption

    Spaces in directories or files can cause unexpected issues if a programmer didn't quote the entire name in every place it is used.
    Old-time Unix guys know to avoid spaces and funny characters in...
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    Re: NFS copy performance question

    You are correct, a read-only mount won't be tested by attempting to write to the NFS disk. I use read-only mounts to my nextcloud server, which I don't actually trust.

    If I were copying lots of...
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    Re: Ubuntu 18.04 no longer booting

    Thanks for the boot image. HIGHLY useful. Seems like you have the dreaded "boot loop" - I've never seen this. Did a google:...
  11. [ubuntu] Re: I can Ping & SSH into my Raspberry Pi from windows but not from Ubuntu

    My ssh troubleshooting steps: https://blog.jdpfu.com/2015/08/17/troubleshooting-ssh-connections
    Concrete facts would be helpful.

    A good start is:

    ssh -vvvv user@host
  12. Thread: Image Corruption

    by TheFu
    Replies
    11
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    12

    Re: Image Corruption

    I read that some browsers have issues with some image files. Try different browsers, perhaps there is a clear issue with 1 or 2 of them, but all the others work fine. I like dillo. It is small, VERY...
  13. Re: Docker edition Al fresco install problem on Ubuntu server 18.04 reg giSSL certifi

    I've deployed Alfresco a few times, but never using docker. I'm not a fan of docker, but I am a fan of containers that I build and manage. I do not trust pre-build containers.
    I use a reverse proxy...
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    Re: NFS copy performance question

    I've never understood the need to hide internal names/IPs.

    Wifi is almost certainly the issue. People think their wifi is better than it really is. Forget the reported "connection", that has...
  15. [ubuntu] Re: did I copy the corruptness onto the new drive?

    I hope you didn't do this:

    cat /dev/sda > /dev/sda
    Writing sda to sda would be bad, probably. There are really very few good reasons to use 'cat' at all. Maybe once every 4 yrs, I use cat. I...
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    Re: NFS copy performance question

    Welcome to the forums.

    Perhaps if you showed the NFS server configs
    and
    the NFS client configs/mount options
    and
    described the disk subsystem on both sides and how the network is setup? ...
  17. Re: Can Ubuntu be compromised by launching file (jpg for example)?

    There are thousands of ways to trick you into compromising your files. Way too many to list.

    One way ... Be very careful copy/pasting commands from any website. What you see isn't always...
  18. [ubuntu] Re: old samba shared directory on a new installation

    If the files are pure data used by 1 userid, then whatever you did to copy them is probably fine.

    But, if the files are a full Linux backup, then you've lost 50% of the data required for a...
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    [ubuntu] Re: Understanding user and group permissions

    Fewer descriptions. More facts, please. Run commands, show output. Use code tags so it looks the same here as it does in a terminal.
    When there are permission issues, we need the ls -al for the...
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    Re: SSHFS Permissions Issue

    sshfs provides the permissions of the userid used in the connection. That's the rules. If the userid you connect as doesn't have the required permissions, sorry. Pick a better userid.

    Perhaps...
  21. Re: Strange Hard Drive Behavior in Server 18.04

    Check the SMART data.
    Check that the partitions are aligned.

    Any chance you've confused MBps and Mbps? There is an 8x difference. Disk and network performance is Mbps, almost always.
    I've...
  22. Thread: Image Corruption

    by TheFu
    Replies
    11
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    12

    Re: Image Corruption

    Could be a php.ini setting too. Or a proxy or security setting for mod_proxy or mod_security. I don't use php or apache enough to help. Sorry.

    A better title for this thread would have been...
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    Re: Ubuntu 18.04 no longer booting

    Thanks for the bootinfo. All I see in there are a few non-answers which make me think the disk is either failing or corrupted.
    Boot into a live boot environment again, install smartmontools then...
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    Re: I am compiling a new coin for fun

    I wasn't definitely NOT asking to see the code.

    I haven't written any serious C++ code since the early 2000s. We barely used the std:: templates at that time. RogueWave was the defacto class...
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    Re: I am compiling a new coin for fun

    The error is that a private method is being called by a class that doesn't have access to it. That's a coding issue, how can it be anything else?

    But you have the code. I don't.
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