alexskysilk's latest activity
-
Aalexskysilk replied to the thread Problem with mounted hard drive after restore.you created a circular dependency. your host is dependent on a datastore served by a guest, but the guest needs the host to run. I would begin by disabling the SMB_NODE_200 datastore. Next, make sure the container is running, the storage is...
-
Aalexskysilk replied to the thread Cavium Nitrox Security Processor Board GC-CN5690 CNN5560S-85 GC-CN5690 usefull for anything?.Cavium Nitrox is a line of security coprocessors. The only useful function their linux drivers expose is cryptographic acceleration, so if you're building a "high performance" vpn appliance it COULD be useful (I put high performance in quotes...
-
Aalexskysilk replied to the thread Western Digital Red NAS SATA SSDs - High latency.Not just terrible. likely defective. did you run a smart long test?
-
Aalexskysilk replied to the thread iSCSI SAN Configuration.I've used those before. What I recommend to make your life easier is to create a separate vlan per interface, and match them on the initiators. I'd leave the vlans on separate class C's so you dont inadvertently create conflicting routes. I...
-
Aalexskysilk replied to the thread iSCSI SAN Configuration.whats the storage device in question? what is their documentation say with regards to best practices?
-
Aalexskysilk replied to the thread [TUTORIAL] FabU: can I use Ceph in a _very_ small cluster?.There is no "migration" with only three nodes. the "3" in your crush rule refers to how many copies on individual nodes that have to exist in order to have a healthy pg (placement group.) the number of OSDs dont matter in this context- you can...
-
Aalexskysilk replied to the thread DELL fatal error was detected after Proxmox install.upgrade your firmware.
-
Aalexskysilk 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...
-
Aalexskysilk 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.
-
Aalexskysilk replied to the thread ZFS on rotative drives super bad performance.How are you arriving at that measurement? do that on the host.
-
Aalexskysilk 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...
-
Aalexskysilk 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...
-
Aalexskysilk 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...
-
Aalexskysilk 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...
-
Aalexskysilk 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...
-
Aalexskysilk 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?
-
Aalexskysilk 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.
-
Aalexskysilk 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.
-
Aalexskysilk 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...
-
Aalexskysilk 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...