Search results for query: bcache

Ich hatte auf meinem Laptop lange Zeit ZFS und Bcache kombiniert. Das war schnell und für meine Belange (tägliche Replikation) ein super und vor allem schnelle Dateisystemkombination - für Server natürlich nicht zu gebrauchen.

Bcache hab ich mal im Lab gegen die restlichen antreten lassen, das ist nicht so der Knaller wie erwartet. Da macht ZFS mehr Spass. CacheCade funktioniert sehr gut, ist aber auch leidlich teuer. Ich würde auch zu Ceph tendieren, da kann man gut skalieren, sowohl Performance als auch Storage...

...ein Multi-Tier-Storage-System aufbauen. Wenn man "nur" Festplatten mit SSD beschleunigen möchte, so kann man das auch tun über LVMcache oder bcache direkt in Debian machen. Funktioniert prima und die Festplatte wird echt schnell bei Dingen, die öfters gelesen werden. Was am günstigsten ist...

...ich noch nicht dran gedacht ... Ich werde mir mal die Intel RAID SSD Cache Controller. Bei CacheCade von LSI bin ich etwas skeptisch. Und BCache könnte vielleicht auch eine option sein. http://www.lug-erding.de/vortrag/SSD-Cache.pdf Und ja, es gibt noch so viele Möglichkeiten - deshalb...

...console for OS install / raid config etc. - LSI hardware raid, 2 x Intel SSD in raid1, carved up to a 100gig Proxmox-OS-slice; and rest is for BCache SSD - 2 x 2Tb Hitachi SATA in raid1, for block tank for Bcache storage - DRBD on 3 nodes setup as per the wiki advice...

...store Data with less overhead, and protection of concurrent drive failures - yes those happens) on a single pool, then ZFS can do. The LVM+bcache or zfs becomes somewhat invalid, because it does not matter if I use a single-Node Ceph or a single-node ZFS or a single node LVM +bcache node...

...complexity and ties multiple functions to the same failure point without actually buying you anything- you can achieve the same thing with LVM+bcache or zfs. I have not benchmarked ceph in this role because it never occurred to me to try; my guess is that it would perform worse with Ceph...

The NVMe device is acting as the cache (bcache) for a two-drive mdraid 10 using ext4. EDIT: Bcache is configured for writeback, I need the write speed that it gives.

...card!) choice, just remember you will also need the SATA breakout cable) and set the SSD up as an extra buffer for it. Linux does this with bcache. Hm. It looks like this is not supported, though, and I'm not sure if there is progress on getting it working. It looks like it cannot work...

...to destroy the underlying file system while attempting to flush and dismount the write cache. - Did give good results for reads/writes bcache - User tools have to be compiled and installed - can't be used with existing file systems - No auto ignoring of bulk reads/writes (disk cloning...

...scary to contemplate. ZFS + L2ARC and ZIL on ssd. - Performance was good. The L2ARC algoritihms are far more sophisticated than the moes for bcache or EnhanceIO, long term usage should benefit - A delight to work with, so flexible and clear. Great command line tool set, very easy to see...

...replay even after crashes? EnhanceIO is a fork of flashcache. Not sure if its still being actively developed? One of the things I like about bcache is that it ignores large sequential reads and writes, such as backups, disk clones etc. I have done that - does speed up small (<1GB) writes...

I'm not sure you could build bcache for a 2.6 based kernel. Your easiest options are flashcache (which requires a remount of your filesystems through the cache) or EnhanceIO which can be enabled with filesystems online: https://github.com/stec-inc/EnhanceIO...

Using bcache to create a SSD cache for one desktop PC is certainly worthwhile. But I'm wondering if the same applies for VM hosting, which I imagine has rather different IO patterns. I'm testing a two node/brick glusterfs replicate setup, with the proxmox ndoes also being gluster nodes...

...if we finally get a more recent kernel (3.1x hopefully) we will have several built-in SSD caching modules to choose from (namely EnhanceIO and bcache), and hopefully the Proxmox devs will integrate using these into setup. 1. ZFS ZFS supports using SSDs for it's L2ARC (second level read...

...the latest Proxmox kernel, will work on to create meaningful benchmarks like this: http://www.accelcloud.com/2012/04/18/linux-flashcache-and-bcache-performance-testing/ It will take some time though, I'm still in the process of building the test server and planning out the benchmark, as I...

...gives Facebook a nice performance bump so maybe helps when added to Proxmox? https://m.facebook.com/notes/facebook-engineering/flashcache-at-facebook-from-2010-to-2013-and-beyond/10151725297413920/ It seems it's the only option currently until a newer kernel with bcache is available for...

It is possible to do what you want to do on Proxmox 3.1 (with Debian Wheezy), using bcache and software raid, but I agree with screenie. The process to get the SSD cache setup on top of a software-RAID 1 is not simple and if there is a drive problem you cannot boot to fix it (since it is...

...due to some kernel panic... but now I guess it's better, the current kernel can be called stable. Software SSD caching Regarding flashcache/bcache: I have been a big supporter of adding SSD block caching to Proxmox, but so far the OpenVZ kernels don't include the necessary patches, and the...

...performance is fine, but there are particular containers that use extremely high IO. We could very much benefit from write-back SSD caching (bcache), but it looks like it's not going to happen anytime soon (soonest is after RHEL7 gets released). According to the storage wiki: As these high...