alexskysilk's latest activity

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    alexskysilk replied to the thread DELL fatal error was detected after Proxmox install.
    upgrade your firmware.
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    alexskysilk replied to the thread ZFS on rotative drives super bad performance.
    ok, that make sense. the behavior you describe suggests you have problems with your hardware. you can keep an eye on dmesg to see what messages pop up during IO, which should give some indication. A smart test on your drives is probably in order...
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    alexskysilk replied to the thread ZFS on rotative drives super bad performance.
    pveperf is not a useful benchmark in this way. try is with something that is either your application or simulates your application.
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    alexskysilk replied to the thread ZFS on rotative drives super bad performance.
    How are you arriving at that measurement? do that on the host.
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    alexskysilk replied to the thread Advice for cluster/ceph.
    zfs doesnt have to be a poor fit for database- the default settings are simply not tuned for it. see https://openzfs.github.io/openzfs-docs/Performance%20and%20Tuning/Workload%20Tuning.html#database-workloads...
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    alexskysilk replied to the thread ZFS on rotative drives super bad performance.
    Sounds like you have issues beyond the disk subsystem. guest type, virtual HW configuration, and drivers can all play a part. I'd begin troubleshooting on the host end. What kind of performance do you get with similar IO issues by the host...
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    alexskysilk replied to the thread FYI: ZFS pool SUSPENDED not recognized / handled - even with HA VMs starving.
    HAH! I never said or suggested open source; open source is great and many valid and valuable applications exist that are, but storage is special. Storage requires ENORMOUS engineering effort, post deployment support, and continuous improvement...
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    alexskysilk replied to the thread FYI: ZFS pool SUSPENDED not recognized / handled - even with HA VMs starving.
    google high availability storage. There are many options available. resouces arent relevant in and of themselves. Storage solutions can be very low to very high powered, with different class of disk, tiering and caching methods, and with varying...
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    alexskysilk replied to the thread FYI: ZFS pool SUSPENDED not recognized / handled - even with HA VMs starving.
    Not necessarily. dual (or multi) controller NAS is a thing. Repeat after me. Replication isnt High Availability. High availability necessarily requires REAL TIME availability, which replication cannot provide. "But in my use case, the data...
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    alexskysilk replied to the thread FYI: ZFS pool SUSPENDED not recognized / handled - even with HA VMs starving.
    Any form of shared storage. NFS, iSCSI, etc. see above. zfs is host specific. if it becomes unavailable, what would be the point of fencing the node in the first place?
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    alexskysilk replied to the thread CephFS disk usage for ISO storage?.
    As you can see, your datastore and iso_data pools use the same disks. the total capacity consumed for BOTH is 4.5TB raw (~1.5TB used.) you ISOs only take 137GB as you expect.
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    alexskysilk replied to the thread CephFS disk usage for ISO storage?.
    post the output of ceph df detail if you still have questions I'll chime in with explanation.
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    alexskysilk replied to the thread FYI: ZFS pool SUSPENDED not recognized / handled - even with HA VMs starving.
    A couple of reasons this isnt actually so. 1. The store in question was limited to a single node, and would not have affected anything in a cluster- eg, no other cluster node has access to this store- a zfs store is NOT HA BY DEFINITION. 2. any...
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    alexskysilk replied to the thread Deploying a colo.
    You shouldnt be. there are a lot more people (especially on these forums) that equate NAS with Synology and not Netapp. and fewer know why Netapp costs so much more. @dmca7919 if serious, NAS is an excellent option for HA virtualization storage...
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    alexskysilk replied to the thread How to move a VM from one cluster to another.
    Having the datastore mounted on two separate clusters can be really dangerous, since the clusters dont share file locking information. That said, if you are able to make sure they dont try to consume the same resources at the same time, what you...
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    alexskysilk replied to the thread A question about storage design.
    Why is everyone using passive voice when recounting that "consumer drives are discouraged?" by whom? and under what circumstances? There is nothing INHERENTLY wrong with using non enterprise drives for zfs pools, as long as you understand the...
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    alexskysilk reacted to bbgeek17's post in the thread Proxmox and iSCSI with Like Like.
    We did a deep dive on this feature in this article: https://kb.blockbridge.com/technote/proxmox-qcow-snapshots-on-lvm/ https://forum.proxmox.com/threads/inside-proxmox-ve-9-san-snapshot-support.169675 Blockbridge : Ultra low latency all-NVME...
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    alexskysilk replied to the thread A question about storage design.
    a couple of thing: 1. if you do wish to deploy lvm on mdadm, you can. it just requires a bit of "linux" setup. but you shouldnt, because 2. a zfs/btrfs mirror is seamless, has filesystem integration, inline compression, snapshots, etc. it is a...
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    alexskysilk replied to the thread WinXP conversion from esx to pve refuses to boot.
    If memory serves, Windows XP allows a repair install. just boot the windows xp iso (sata/ide host bus for the existing virtual disk) and reinstall. Its also possible to use universal recovery from Acronis to reset an install using new hardware.
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    alexskysilk replied to the thread Recommended amount of swap?.
    since you're in a cluster, the conversation should expand to include provisioning in general. measure your total provisioned RAM across your entire cluster. assuming your cluster nodes are identical and have no additional host load (eg...
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