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Recent content by bibin

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    ZFS high cpu load with low io and cpu usage

    Hi, We are using zfs on one of our servers. Both deduplication and compression features of zfs are also enabled in it. We were trying to migrate a vps disk from an ext4 server using 'DD', but the migration process seems to be resulted in an increased load on zfs server and hence the migration...
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    deduplication and thin provisioning are not working

    Hi, We have configured a zfs server with raid6 and enabled deduplication,compression and thin provisioning features on it. Then we created virtual servers on it. But deduplication and thin provisioning are not working on those virual private servers. Some logs are pasted below. When we...
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    SSD disks performance issues with ZFS

    We are using to following fio configuration to test , ./fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=test --bs=4k --iodepth=64 --size=4G --readwrite=randrw --rwmixread=75 This will create a 4 GB file, and perform 4KB reads and writes using a 75%/25%...
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    SSD disks performance issues with ZFS

    Yes. Our raid card is not support JBOD configuration and can't flash to IT mode as well. I have setup those things as per the LSI doc. They recommended that to use " To use the drives connected to the 2108/2208 controller, a RAID must be created. If using drives like in JBOD, each single drive...
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    SSD disks performance issues with ZFS

    Hi, We have tested on the baremetal server with ram caching. I hope the mentioned IOPS will be served by the RAM cache(ARM) and not by the disks. We are using fio tool to test the IOPS benchmarking. I am thinking that to create a vm with kvm virtualization on the zpool(like a dataset) to...
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    SSD disks performance issues with ZFS

    Hello, We are currently testing our using ZFS on Linux as a storage platform for our VPS nodes but we don't seem to be getting the performance figures we expected. Can you please provide some suggestions as to what we should be tweaking to reach higher iops? Hardware is SuperMicro with the...
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