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    [SOLVED] Re: Oh No not another RAID Post

    I don't know that command, and not sure what exactly you mean by 'scrub'.

    Basically after you remove a disk/member from the array (for example the mentioned sdb1), and zero its superblock, you are...
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    [SOLVED] Re: Oh No not another RAID Post

    Sorry, my bad that I didn't mention the backup file parameter in my grow command. I thought you had that clear from your tutorial link. The --grow reshape is basically asking you for path and...
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    [SOLVED] Re: Oh No not another RAID Post

    I assumed you want to use this as a learning opportunity too. Otherwise and as you already said you have backup of the data, like TheFu says, much faster and better way is to dynamite the array and...
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    [SOLVED] Re: Oh No not another RAID Post

    As far as I see in mdadm -D sdb1 is not marked as failed yet. Despite any smart errors.

    So, you have two ways to proceed.

    1). Ignore the smart info for now, and shrink the array from 8 to 6...
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    [SOLVED] Re: Oh No not another RAID Post

    Related to the mdadm shrink, the new size will be 5x members for data, and in mdadm -D you have the size of each member = 488253440. So according to that you first need to temporary shrink the array...
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    [SOLVED] Re: Oh No not another RAID Post

    Good, I see you use partition as raid members (like /dev/sdb1) and not the whole unpartitioned disk (like /dev/sdb). That is a good best practice with mdadm but some people don't follow it. When...
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    [SOLVED] Re: Oh No not another RAID Post

    First of all, mdadm.conf is not very relevant for shrinking. The ARRAY definition in that file basically just tells to assemble an array with all members (superblocks) with specific UUID present.
    ...
  8. [SOLVED] Re: moved kvm vm's to new machine, one vm refuses to boot

    I do not use kvm but I would focus much more on the "not bootable disk" message.

    Maybe it somehow lost the boot flag inside the VM or the MBR/UEFI sectors? Or a /boot parttion if separate?

    PS:...
  9. Re: md0 seems to be assembled ignoring mdadm.conf AUTO -all

    I still think you are doing it wrong. You say you created two new arrays on the new disks. Why their ARRAY definitions are not in mdadm.conf?

    Instead of focusing so much on 'AUTO -all' I would...
  10. Re: md0 seems to be assembled ignoring mdadm.conf AUTO -all

    After rereading post #3 I still fail to understand.

    You have an array in the server and you want to add an older array to copy data over. Is that correct?

    If that is so, then you want the...
  11. Re: md0 seems to be assembled ignoring mdadm.conf AUTO -all

    The first array created is always md0, then md1 etc. From my experience ubuntu uses md127 is some cases and more as a random value.

    In any case I see you do not have any ARRAY definition in the...
  12. Thread: IP Forwarding

    by darkod
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    Re: IP Forwarding

    Actually since you are using ufw which is only a front for iptables I think you need to search what is the process to add that option through ufw. I don't use ufw so I don't have the commands at...
  13. Thread: IP Forwarding

    by darkod
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    Re: IP Forwarding

    I think you are missing to do NAT for traffic going outside. So it doesn't know to come back correctly.

    Try this as a simple test (the setting will not stay there after reboots, it is just for a...
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    [SOLVED] Re: Ubuntu Server 22.04.3 not detecting HDD

    If you were able to do it like that, I am always more in favor of adding the new disk in parallel, and migrate the data. Rather than cloning. Things can go wrong. For example, did the new disk have...
  15. [server] Re: Ubuntu Server 23.10 hangs during shutdown/reset

    What exactly are you using to power off the server, is it 'sudo poweroff'? And for restart you use 'sudo reboot'?

    It might be a clash with your hardware or another thing. In any case I wouldn't be...
  16. [ubuntu] Re: Setting FTP (vsftpd) Directory for a user with full write permissions?

    Even for local connections I would suggest you get used to use scp and then you will have more experience with it when you need to use it in other situations.

    To move or copy files within the same...
  17. [ubuntu] Re: Setting FTP (vsftpd) Directory for a user with full write permissions?

    Did you consider using scp instead? The thing is that ftp is very old and quite unsecure protocol. You should never open ftp to your web server over the internet, and not to the /srv directory.
    ...
  18. [ubuntu] Re: Setting up WordPress on one Server and the Database on another

    Review these short instructions how to allow remote conections to mysql and see if it helps. I think by default it listens only to local connections, so probably you will have to do the part with the...
  19. [ubuntu] Re: Setting up WordPress on one Server and the Database on another

    OK, so ping works remotely but 3306 doesn't. Did you set up mysql correctly? I don't remember much details, get on google some tutorials to set up and troubleshoot mysql and follow them in parts...
  20. [ubuntu] Re: Setting up WordPress on one Server and the Database on another

    In general, it is true that you can use app on one server and db on another. In your case, you have various things to check to make sure you set up everything right.

    Does telnet work? I believe...
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    [SOLVED] Re: Very slow raid1 with nvme disks

    You are right, completely. Any possible BIOS corruption needs to be addressed.

    I was just thinking out loud that if my board is PCIe gen3 then speed of a standalone Kingston NV2 2TB disk should be...
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    [SOLVED] Re: Very slow raid1 with nvme disks

    Well, mine is a Supermicro X11SCL with PCIe gen3. But according to that my NVME speeds are also very poor. I don't have much time for deeper investigation but obviously I will have to find some time...
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    [SOLVED] Re: Very slow raid1 with nvme disks

    My mdadm raid1 array has two NVME disks and one SATA SSD disk, so it is not a fair comparison to yours because the SATA SSD will be limiting the writes speed. But here is what the fio results are:
    ...
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    [SOLVED] Re: Very slow raid1 with nvme disks

    I have mdadm raid1 with NVME disks, but I can't run these same tests until tomorrow and report results. But receiving only 108MB/s write on NVME is extremely poor. Actually any half decent SATA disk...
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    [SOLVED] Re: Problem installing Ubuntu server 22.04

    On the contrary. Partitions 4 and 5 on the same disk hold windows installation and the OP doesn't want to remove it. Ubuntu will not be the only OS on the disk. Neither the EFI partition since it...
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