Search results for query: bcache

  1. T

    Proxmox+Ceph and a caching mechanism

    ...storage platform. However, my main goal is to use one of the available open-source caching mechanisms out there (such as EnhanceIO, OpenCAS, Bcache, ...) as the I/O cache to improve performance. Now I'm wondering, where should this mechanism be implemented? My guess is that it should be...
  2. F

    [SOLVED] Weird Problem on PVE host - has anyone seen this before?

    ...corruption - were specifically related to one LXC VM. I simply restored from backup / using a backup that pre-dated when I had a 'SSD bcache drive fail even' last month. (The VM is a VPN service host, does not get a lot of change made regularly). After that, things are running smoothly with...
  3. F

    [SOLVED] Weird Problem on PVE host - has anyone seen this before?

    ...SSD drives. Proxmox core install on the SATA Disk raid / with suitable LVM and Raid config to make things happy. Then there is added fun of 'bcache' to accelerate a bulk block storage which is bulk-blocks on a backing mirror SATA MD device. SSD bcache device is on sw raid on the SSDs...
  4. elurex

    Intel CAS/Open CAS Linux and Proxmox/ceph

    i am able to use bcache with ceph easily... is there much difference between opencas and bcache? they are very similiar in some sense
  5. T

    RDB mirroring slow in proxmox

    ...clusters, namely A and B (updated to latest edition) Cluster A: 3 hosts, 2 hosts with single 10T disk and 256GB SSD as OS, bluestore and bcache. Another host only have minimal hardware configuration for hosting proxmox for cluster quorum only, not intended to host any data and VM. Cluster B...
  6. M

    Where to open a bug incident for kernel 4.15.18-26?

    I'm running OpenMediaVault on Debian 9 and I'm using the Proxmox kernel 4.15.18. The latest -26 introduces a bug with bcache, I had to go back to -25. In the bugzilla only version 5 and 6 are accepted as version for new bugs. To whom should be reported? Cheers
  7. wolfgang

    New Proxmox server - considerations and disk layout

    Then use a samba share. You can run this service in a container and use mp to pass the disk to thw CT. You could use lvm cache or bcache. Both are not supported by Proxmox. I don't know if they are working well.
  8. T

    DRBD comes up with Connected Diskless/Diskless after reboot

    ...looks like that I try to have a quite similar setup and unfortunately the problem as well. I'm trying to setup the following: ProxMox VE 6.1 BCACHE DRBD 9.0 With or without linbit linstor (I don't care for that, would be nice but gave me hell on the first try) 2 Servers IBM x3650, each...
  9. elurex

    Ceph User Survey 2019

    done... i really wish there is a way bcache can be use with ceph nautilus. DM-Cache really under performed.
  10. LnxBil

    1 SSD and 2 HDD - best storage setup?

    ...NVME as efficiently as my proposed solution, you can go with md-raid on the disks and then additionally some cache technology like flashcache, bcache in write through (write back is faster but very dangerous with only one disk) mode so that every read is automatically cached on the NVME until...
  11. E

    Importing linked clone disk

    ...issue as unlike the example above my files don't show they have backing files. They must have been corrupted in another way. Must have been bcache even tough I set it to writethrough before closing shutting down. More info can be found here: https://blog.programster.org/qemu-img-cheatsheet
  12. F

    Query: LXC Fails to start at boot / despite auto-start setting / starts fine by manual intervention after.

    ...my VM config for this is, root@proxmox:/etc/pve/lxc# more 100.conf ## misc notes here arch: amd64 cores: 16 hostname: rbox memory: 61440 mp0: bcache-9tb:100/vm-100-disk-0.raw,mp=/data,size=9000G net0...
  13. A

    Help with Ryzen + HDD +SSD Cache Install

    Thanks for this. Ended up scrapping the cache idea as the SSD given to me were WD Greens. SO just using them as Boot Drives.
  14. P

    Help with Ryzen + HDD +SSD Cache Install

    ...I wouldn't recommend it since iirc L2 Arc also uses RAM and the bigger the cache drive the more it uses. You'd probably want something like bcache. You can also configure the LVM's to use cache. ZIL/SLOG might be helpful for you though. Another downside is unless you know what SSD you have...
  15. LnxBil

    Fujitsu TX100 S3 auf ZFS umrüsten?

    ZFS hat keinen Cache. Es gibt ein SLOG Gerät und L2ARC. Beides ist kein Cache wie man ihn ala Flashcache, bcache oder Intel Optane interpretieren kann. Je nach Workload kannst du die schnellste SSD der Welt verbauen und bekommen nicht mehr Geschwindigkeit raus als ohne. Hier also bitte...
  16. A

    Low filetransfer performance in Linux Guest (ceph storage)

    Since KVM is singlethreaded and ceph is multi, I tried adding 4 new HDDs (VirtIO block) and did a raid 0 in Windows which gave me much better speeds. Next step is ceph cache tiering + ssd/nvme journaling or if you are really brave, bcache
  17. P

    ZFS pools on NVME

    not good. Zfs does not cache writes. just use bcache . or flashcache (almost deprecated but still fast). another problem is that the NWME is a special interface on the shortened path. Not the worst idea is the container where the nvme is thrown inside container. Even NVME parition throughout...
  18. P

    nvme partition to kvm quest as storage device

    I have a NVME disk partitioned to some paritions. One partition used for bcache, and another two i want use inside two KVM guests directly for mysql. how can I set it up? I see "cloop" options, but can't understand it.
  19. D

    Ceph BlueStore - Not always faster than FileStore

    This step is done after setting up the bcache and attaching the cache device, run this command: echo 0 > /sys/block/bcache<number of bcache device>/bcache/sequential_cuttoff If you have several bcache devices, you can do them all at the same time like this: for f in /sys/block/bcache?/bcache...
  20. A

    CEPH Benchmark with 6 HDD WesternDigital 2TB

    Try a cache tier: http://technik.blogs.nde.ag/2017/07/14/ceph-caching-for-image-pools/ And lookup bcache, havent tested yet but forum posts on here say its really nice!