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    [SOLVED] grub: invalid magic number

    Hi to all. I'm moving a lot of VMs from XenServer to Proxmox. I did this more or less 90-100 times before with my conversion script, every time worked properly EXCEPT for 1 VM. On the machine i'll add virtio_pci and virtio_blk modules to initramfs , then I install grub (if not already...
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    Best way to backup VMs

    Backup Server is a standalone server or could be used easily on an existing server without installing tons of sofware ?
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    Best way to backup VMs

    Are you aware of some "scheduler" able to rotate backups ? Backing up remotely from command line with vzdump via ssh works perfectly, but I need something to rotate backups. Should I create it on my own ? I could use logrotate but looks like a workaround.
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    Expand pool

    No, i only use enterprise-grade SSD disks from not less than 10 years with high-grade hardware raid controllers (where I can't use software raid, i really hate the raid controller) I had 4 major failures: - One time the controller failed, kicked out a disk, then, immediatly when replacing it...
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    Best way to backup VMs

    I've fixed by allowing vzdump and qm list, just the "list" because qm could be dangerous, to a backup user with password-less login from my backup server. I'm backing up right now one test server in a totally scripted way. Other solution to read the VMID and VM Names without using "qm" command...
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    Best way to backup VMs

    Any suggestion on how to connect, with an unprivileged users, from backup server to pve and still run vzdump ? The only solution i have is to create an unprivileged user with password-less ssh, then using sudo to grand usage to "vzdump" to that user. Any better way ?
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    Best way to backup VMs

    I have SSH access from backup to pve (not the opposite) , can I run the vzdump from the backup node and stream ? something like : ssh pvenode 'vzdump --stdout 1.........' > mybackup.vma" I can run vzdump on a running VM and interrupt the process safely, to do some tests ? I have a very bed...
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    Expand pool

    With that, I can loose *ANY* 2 disks for each vdevs. In perfect conditions , I can loose *ANY* two disks from vdev1 plus *ANY* two disks from vdev2, so, 4 disks. In terms of redudancy and safety , this big pool is the same as 2 different pools with just 1 vdev each. The only difference is that...
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    Expand pool

    No, I'll never ever use anything lower than RAID-Z6 for redudancy. Never. Had (a lot) of multiple failures on RAID10 in many years. Never more for no reason. Never. The posted commadn seems to work even with just `pci-0000:03:00.0-sas-phy4-lun-0`. Other than this, is the command correct ? I...
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    Best way to backup VMs

    This means to have , at minimum, free space not less than the biggest VM i have to backup. The one and only interesting feature of xenserver is backups via api with direct download. (yes, doing so on a running VM means creating snapshot and so having free space available not less than the VM i...
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    Best way to backup VMs

    I don't think I can use VZDump because it need a storage on pve node, and my backup server are not exposed to virtualization nodes. They are on a different natted subnet. Exposing an NFS share would be a mess.
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    Best way to backup VMs

    In our XenServer (cursed the day i choose to use that rubbish) node, we backup (sometimes) VMs directly exporting them from a snapshot. It's pretty useful because a restore can be mede directly, without resyncing a lot (millions) of small files. In Google Cloud, we do the same by only using...
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    Expand pool

    Hi. I have to add 4 new SSDs disks to an existing RAIDZ2 pool. I'm not an ZFS expert and I don't want to loose/reduce redundancy making mistakes. Is this the right command to use ? # zpool add -n rpool raidz2 pci-0000:03:00.0-sas-phy4-lun-0 pci-0000:03:00.0-sas-phy5-lun-0...
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    Upgrade from 5.2.2

    Another question: backups are mandatory (meaning that data loss is expected) or just as safefy ?
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    Upgrade from 5.2.2

    Thank you. Is that "safe" or should I expect some issues ? Both reboot are required or can I safely skip the first (related to 5.4 upgrade) and reboot directly after the upgrade from 5.x to 6.x ?
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    Upgrade from 5.2.2

    Hi to all. I have a 5.2 production server that i would like to upgrade to the latest version. Can I directly upgrade from the web interface ? Any additional steps? Should I upgrade to each version step-by-step or straight to the latest one ? I have to reduce downtime as much as possible. Just...
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    Increase storage

    I don't need a performance boost, this server is SSD only and it's already fast, so no need to run send/receive, right ? Are you saying to add a new vdev to the existing pool ? Or should I create a brand new pool with it's RAIDZ-2 vdev ?
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    Increase storage

    Hi to all Current env: PVE 5.2-2 with 4 SSDs in RAIDZ-2 I would like to increase the available space by adding 4 disks more. What do you suggest ? Creating a new standalone RAIDZ-2 pool or grow the existing one to a new RAIDZ2 ? Is this something I can do from the web interface ? If not, as...
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    Free space

    So: - 1 don't say that "is NOT a bad pratcise" while it is. - 2 i'm asking if is safe to change it on an existing pool

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