Unraid cache pool. New - DARK - Invision (Default) New - LIGHT - Invision .

• Unraid cache pool e. From what i read, it is said that the mover do not "move" the file in use, and i guess the vdisk will always be in use. Cache/Pool issues Mover is not moving files . Cache Pool size issue Cache Pool size issue. I have the cache pool set to maintain 20GB of free space, and there is plenty left on the SSDs. I want to upgrade them to two 2TB drives. I have a virtual disk image for my sole VM that is 500GB, does that mean that I have to have at least a 500GB cache pool I'm replacing the 2 drives that are currently configured in RAID1 on my cache pool. So naively, I took the array offline and just added the new nvme and it showed it's unmountable as seen below: So I took it down and now I can't remove the second nvme from the pool. Another common mis-conception is that So I may have screwed up. Btrfs is the only option if you want to use multiple drives in your Unraid cache pool. I have installed the drive and I only show 500GB of available space. My question is - how do I now safely remove the SSD from the cache pool without los Unraid does try to abstract away things as much as possible, so for a cache pool, I'd say Btrfs is the best as it's the only way to achieve any sort of redundancy (2 or more disks in the pool). Ive got a If they're different size drives, then don't make a cache pool. In that pool, I had about 11,175 mkv files, among which only 80 mkv files are healthy (in tdarr). By Schulmeister January 17 in General Support. Hi guys. Background: I built my new system apparently looking at the old style documentation (prefer cache) and I must have hit things mid-cycle because I overlooked cache pools; I just saw cache disk (singular). my question being is there a draw back to mixing the 2 types in a single pool, can the 2 types be segregated into seperate pools and have different shares assigned to Check out setting up a cache pool using both your NVMe drives. Unraid Primary Server: Pool 1: 2x250GB SSD for appdata and docker. I'm not sure if a cache pool would be n I can't seem to get my cache pool of two 500GB 7200RPM SATA disks to balance. On reboot, the pool appears fine and the VMs & dockers are runni I just installed new m2 ssd drive for cache which is 1 TB but when i turn on Unraid its shows 632 GB as size, and free 237 GB with 3. any other shares you don’t often write to example: media shares Share “Use cache disk” Settings# Cache/Pool issues Mover is not moving files . Then run Mover and wait. But it does not say how, or if the default is 1 or 2. 00MiB, used=112. Be able to create RAID-1 cache pool with 2 xfs filesystem. It can be used as write cache, VMs, dockers, whatever you want. Im sure this has been asked loads of times but would be the ideal cache pool size for me. Not sure if it's better to get 1-2*500gb or 2*1TB I am trying to replace an almost failing SSD from a ZFS 'mirror' cache pool on Unraid 6. Posted February 8, 2022. I want to expand my cache pool from 500GB to 1. I guess it depends on your use case to determine how much you need. I have not tested it with 2 cache drives yet. I have recently added a 2nd SSD to form my first cache pool. The system shows a warning that the drive is missing, but it is definitely there in the pool. ) I started clicking around trying to see what my options where. I just came across the option to schedule "Balance" and "Scrub". What makes Btrfs the perfect system for cache pools is the fact that it supports various levels of RAID in multi-drive mode. I want to set both nvmes as cache intended for VMs, Docker containers and general use in the system. Howdy all. I'm on 6. So I decided to just blow away the cache pool and start over again since I had just started playing with dockers and didn't have much to lose. Hallo, seit 3 Jahren läuft nun mein Unraid Server problemlos. I was able to mostly recover this time. I started with this: You can map a share to the cache, then when you write to the share it will write it to the cache pool. What's my best course of action here with the server stuck at "unmounting" disks? I' I have an Unraid server running 7 8TB HDD's + 1 8TB HDD as parity. If you want files to initially be written to the cache and later moved to the array then you ned to use the Yes setting and not the Prefer setting. New - DARK - Invision (Default) New - LIGHT - You are correct. For yes, writes go to cache first and the mover transfers them to the array later; for no, writes go directly to the array; for prefer, writes go to cache and stay there as long as there is enough space, mover will move data from array to cache if needed; for Here are some details to what I am looking to use and do with unraid. Parity and data disks are on an M1015 - cache is on native SATA. Cache A is RAID5 NVME SSDs and Cache B is RAID1 NVME SSDs. I then looked up how to move the cache shares back to the array and it showed to set the Use cache pool (for new files/directories) to "Yes". I have another unRaid system with a 512gb cache. By Mokkisjeva July 15, 2023 in General Support. I want to r I ran into this exact issue a few weeks ago. 58MiB GlobalReserve, single: total=16. I consider that data completely disposable and don’t run backups on it. Physically replaced the failing SSD with a new one with the exact same brand, type and size. How do I fix the Cache drive to only see the pool as 1TB vs 1. 00MiB, used=16. Posted January 18. The server has two usb 3. I originally used the Syba with the express intention for it to be the cache drive controller (originally I didn't have the AOC card). I'm just using a fairly straight forward media server. Da ist alles ein wenig anders als von anderen RAID Systemen gewohnt. 5 TB. If BTRFS isn't able to consistently survive power being cut while using consumer SSDs, then it really isn't a viable option. Everything tests A while back I wanted to replace my cache drive. It’s basically my backup system. Moderators; 70. By Ice_Black May 27, 2018 in General Support. Backed up existing Eyeing some 16tb exos drives and considering buying 4 for the server but then I lose drive bays for my Unraid cache and VM/docker storage. - all appdata, vms, small shares - set to prefer or Only Current UnRaid implementation is the best storage and multimedia server to date having done this for decades. Reply to this topic; Start new topic; ZFS is better, but it's also a RC implementation in unraid, so at this point, you may run into caveats still I noticed the same thing, the unraid UI showed that the cache pool was correct, and no other option existed in the dropdown. Any suggestions would be appreciated. I assigned one drive to cache, formatted it, stopped the array . Installed the ram, booted normally and went to start the array and my cache pool would not start. The 512 is plenty for it. und einem Neustart mein Cache pool wieder da ist. Moderators explain the terms and functions of cache and pool, and how Learn how to use HDDs with multiple cache pools in Unraid to reduce SSD wear, save power and store large files. 00GiB, used=34. There is a logic to the way cache drives are utilized. I am about to add a cache drive(s) to my setup and I have a question about how this will work with VMs and the other folders that will prefer the cache drive (appdata, system). What ever the people tell. Current setup: 4TB Parity with Array devices: 2x 2TB and 1x 4TB + zfs cache pool with: 3x m2 ssd. So I rebooted the Server and upon restart the array did not start due to the fact that one of the two SSD drives on my Cache_apps pool was reported as missing. The whole thing has been running fine for about a year. Can I set the cache so it is in raid mode. Theme . 5TB? Or some magical way do I have 1. Age-old wisdom says to use an SSD for heavy IO activities like rar unpacking, an SSD for Plex So I thought that I would move everything off the cache pool and then recreate the pool again. Are there any known issues in using NvME’s in a RAID5 Cache Pool? In one of my UnRAID servers, right now, there are 6 2tb NvME’s, RAID5. More posts My cache pool is unmountable, screen shot and diagnostics below. Your Plex database). I will be intially starting with 3 16 disks in raid 5 and adding more as the need for more storage arises. Initial symptom was that the cache wasn't being emptied when mover was running. Searching for this answers provides wildly varying opinions. 5 on the pool? Any help/advice is appreciated. 2 NVMe PCIe. (SOLVED) Cache pool: "Unmountable: Unsupported or no file system" (SOLVED) Cache pool: "Unmountable: Unsupported or no file system" By Xenu October 20 Stay informed about all things Unraid by signing up for our monthly newsletter. I also have a stash of platter drives with considerable space (500GB). When you assign them both to the cache pool, unRAID will automatically create a btrfs RAID1 pool. Points as follows: Currently I have 4x 400gb SSDs in a BTRFS RAID10 pool. Members; Stay informed about all things Unraid by signing up for our monthly newsletter. I get pretty good performance through that card (113-118mb/s across the LAN from PC to unRaid, parity checks clock in at 90mb/s avg). I'm looking for some thoughts on how to improve my setup since I just installed Plex. Set these to move the data onto a different pool or the main array. Cache is set to "Yes" in the share I'm writing to. Hier, im Unraid Forum, gibt es bestimmt hunderte Threads zum Thema: Warum zeigt BTRFS unterschiedliche/andere Daten/bla bla an. NVMe is your cache drive (or cache pool) and App Data should go on it. These are set to the typical Raid 1. You can set each share to cache: yes, no, always, prefer. If the devices are in Raid1 i should be able to just power down the machine and replace the damaged drive yes? i will not lose any data? I expect i hi there, Just realized my cache pool is read only due to what looks like a file system corruption. 0 it says: There are two ways to configure the Pool devices: 1. I think the docker image on /mnt/cache that's mounted on /dev/loop2 is preventing the unmount. Start new topic; Recommended Posts. Would like to replace with 2x 1TB NVME drives in BTRFS RAID1 pool. I have rebooted my server and am unable to start my array as my cache pool shows my cache device as "missing". VMs were in the cache pool, and I was finding sustained disk transfers were seriously impacting performance of the VMs themselves. There’s no such thing as a “data” or “parity” drive when it comes to a cache pool. Unraid OS Support ; General Support ; BTRFS vs ZFS for raid1 Setup a single cache pool with all data types with the mover configured for specific shares. 00GiB, used=13. Learn how to use cache and cache pool to improve array performance and protect cached data in Unraid OS. Hi im in the process of building a unraid server ,, which im totally new to. A moderator replies with a link to a FAQ that explains the steps and Plug in the SSDs and create a cache pool while the array is stopped. Posted May 27, 2018. I have setup a lower threshold to warn me. 5k 79 Posted We hosted production from Unraid NVME drive which was formated BTRFS. change all shares to cache=yes 4. I was able to "fix" the issue after finding my appdata folder to be nearly 1TB. However, when you start getting into VMs, depending on what you are doing, you might need a fair bit of disk space. Now sustained I/Os have no impact on my VMs. If I add 1 more 500gb will it increase the space to 1tb? what about 4th 500gb . There was around ~60GB on my cache pool, so I changed the cache settings for my shares from "Prefer" or "Only" to "Yes" where applicable and started the mover. My primary concern is speed of the server as a whole when doing file transfers. I recently bought a Samsung 980 Pro NVME drive. Not sure what I'm doing wrong, I was expecting to have more than 500GB of available. img and our VM’s libvrt. Did a clean shut down of my Unraid server yesterday to install some new ram. Quite honored my server was reposted without asking, but thought I'd give y'all an update on my upgraded 90TB Unraid Server I'm running the latest Unraid 6b15. As a single device, or 2. Raidz cache pool Raidz cache pool. A user asks for advice on how to optimize cache settings and usage for Unraid OS 6. Question on reworking my cache pool. 9 multiple pool support was added and in this video we'll be going over the multistep process of moving Docker and VM Manager data off of a cache Be able to create RAID-1 cache pool with 2 xfs filesystem. Typically, multiple cache drives are configured in RAID 0 (speed) or RAID 1 Typical way to change disks in your cache drive (single or pool) has been to: 1. T Cache Pool btrfs Raid1 unmountable Cache Pool btrfs Raid1 unmountable. JorgeB. I ended up pulling them out of the cache pool, and installing them on separate SSD in Unassigned Devices. Initially after install the total size displayed was It's because of the way Unraid calculates the total capacity, not long ago the free space would also be incorrect in that circumstance, but that was fixed Hi, Can anyone help with the procedure to replace the 2 cache pool devices (hard disks) with 2 SSDs (sdab, sdak) using CLI? I prefer using CLI (btrfs replace commands) instead of moving the data to the array and then back because I have Plex data, so it will probably take ages. The goal is to have the most storage/redundancy/gaming performance as possible. By MrOz August 27, 2023 in General Support. Another common mis-conception is that When I unassign the cache 2 drive and restart the array the other cache disk comes up as unmountable and unraid is asking to format it. Posted February 11, 2016. I plan to install a few Dockers (Plex, OpenVPN possibly, maybe a couple of others). The only way to access multiple partitions is via the Unassigned Devices plugin, in which case the whole of the device would have to remain outside the array and cache pool. So, I was looking to get one of these multi-drive expansion cards, put in several SSDs and build a large cache attached to the main array. The cuestión is, being both my nvmes of 4TB, I would like to know if it is somehow possible to make one same nvme to contain 2 independe 不少新入门 Unraid 的朋友往往对缓存策略感到比较迷惑，不清楚其中的原理，尤其今年6月份新版 Unraid 对原来的缓存策略进行了修改，进一步导致了新手朋友的疑惑。针对这种情况，本文将详细的对旧版和新版下的 Unraid 缓存策略进行详细的讲解，并提供了应用案例和常见问题解答，帮助 I'm just getting everything setup with unRaid 6 and trying to figure out which format would be best for my cache disk. Then later I removed one SSD from the pool. I've set up a cache pool and combined them to make as 1 large drive (2x3TB) I/m trying to understand why unriaid is telling me me cache is almost full ~320GB free, yet Win10 VM shows as ~657GB Free. 52GiB System, RAID1: total=32. Started the array 4. I then stopped the array, assigned the primary cache back and started the array. so the total space adds up to 1500gb but my cache pool only shows half the space 749GB. One of the 240 GB drives is starting to fail with a bunch of SMART errors, so I've bought a second 500GB SSD to replace / upgrade it. I understand. It’s all done invisibly. Unraid doesn't support more than one partition per disk. If you want more space the easiest thing would be to remove the second disk from the pool, add a new cache pool and add the new disk only to this 2nd pool. These should be linked. The mover has finished, but there is still about 100gb of data on the cache pool that wont move to the array. The old ones are also 1TB each and M. Quote; hawihoney. BTRFS has killed at least 1 NVME drive with metadata writes. My Configuration looks like: I think this is not in raid 1 mode Also i think aobut it from the read/write Operations in the first Scr Since what I've understood, setting up a cache pool, unRAID make use of one of Btrfs features to make a 'pseudo' RAID1 between used disks. After formatting I was presented with a cache of 480GB available. The files got corrupted, files were lost, etc. Is this something I should be doing regularly? I've not used this before. Top 2% Rank by size . 74GiB I just bought 2 new 1TB NVME SSDs for an existing cache pool in unraid. As I had the secondary cache working and all the data was there I just copied it from the single drive cache pool to the array. But the problem now is most of my media files that were in the pool (moved to array) are corrupted. NVMe/SSDs can only be used as cache in Unraid, so you’re kinda of mixing it up in your questions. I've always noticed that even though Unraid reports the cache pool as healthy, and the second drive as being part of the pool. Now, with the second one added to the cache pool (which is still fresh and will last some time), I have an unraid instance with 7 hdd drives and 2 ssd drives as a cache pool. In a perfect world you would have two SSD cache drives in a pool set up to mirror each other. If something fails during a transfer I won't lose it? Be Kind of confusing, but I'm having an issue where I try to copy a file from a share A that is set to only use cache pool A, to share B that uses cache pool B, but mover moves files to the array. I have just added a second 120gb First, let’s go over how cache works in Unraid. But I don't want to run the mover for the main cache pool too often during peak times. Current version is 6. I was hoping to run a file system check so I stopped the array but the server got stuck at unmounting the disks. About a week ago, I set up a cache pool on this test server using 3 2TB hard disks. There is something wrong. Basically after a reboot today, when I started up the array I saw the following: Along side this I see the below asking me if I want to format the primary cache drive. Can't remember the exact steps but it's not difficult, quite safe, and very well documented in unRAID docs. Thanks for your support! Quote; Link to comment. Stopped the array 2. Plug in the SSDs and create a cache pool while the array is stopped. Formated XFS and all is good Hi all I added a second Disk to the Cache. Anyway, for sake or argument, lets say i have 2x 240gb SSDs and 2x 1tb Spinny Drives (WD Blues). Reply reply More replies More replies. I have one nvme ssd as my cache pool, all appdata / appdata backup / etc is there. Basically using 2 SSDs together as 1 cache drive. But before I spend the money, I thought I'd ask a few questions to figure out if it'd really be useful in When I started the server unRAID was telling me the pool was unmountable because there was no file system on the pool. Where To Store Shares# On Cache (prefer)#appdata: houses our docker’s container configuration content; domains: houses our VM’s data; system: houses our docker’s docker. I hear there's stability issues with BTRFS. Hardware (this is already set) Supermicro chassis with 8x hot swap drive bays Gigabyte consumer motherboard File System, Cache Pool, etc. My current setup has one cache drive in a motherboard slot, one in a cheap PCIe to NVME adapter. Normal usage, 1tb is ok for how I use it. User shares set to cache-yes will overflow to the array.  Check out setting up a cache pool using both your NVMe drives. I set all of the shares that were on cache only and cache preferred to YES and invoked the mover. Only interrogation i have left is about Mover. I have read through many similar threads but still not sure on the least destructive / recommended steps for a situation like this. my dockers weren't running. You want the Minimum Free Space to be something like twice the size of the largest file you are likely to write. When allocating disk in Win 10 disk management, i set the size just under 6TB. So is the "right" setup a dedicated cache_ plex or a separate UAD Nvme? I guess the cache with ZFS Hey, Quick question, I am new to the cache drive system, let alone a cache pool. 00KiB My cache drive, same M2 SSD I've used forever says it's "Unmountable: Wrong or no file system" tower-diagnostics-20240718-1016. This happened once before about 9 months ago. If the original cache is xfs, you have to clear the drive, format the drive and create a new cache pool. FCP stated I was using a different pool. but recently I get kernel panics trying to mount the cache pool. Before I started I had two 480GB SSDs in there functioning as the Cache pool. This is a new server build from December, so first I got a replacement M. Go to solution Solved by Kilrah, July 15, 2023. The existing drive was 250gb and the new one 128gb. But i have also not Cache pool is two 2TB NVME mirrored BTRFS About a week ago, I woke up to my cache pool being offline due errors. Data, RAID1: total=15. I followed this guide to get everything off of the cache: Backing up the Pool to the Array During the move, I t Unraid OS 6 Support ; General Support ; Cache Pool Cache Pool. I was still able to log into it and I found my cache pool to be full along with a whole host of errors. This results usualy Last night I was having some issues with my dockers, and I just bounced the unraid instance. I have a virtual disk image for my sole VM that is 500GB, does that mean that I have to have at least a 500GB cache pool I've had Unraid running for many years now with using a single cache pool of two SSDs of the same size. While I wasn't sure, I suspected I may have run out of memory(now think that's wrong). Okay if I was starting over with unraid as a beginner what guides or video would be good to develop a cache foundation to build on. To clear the drive, set all the shares currently using the cache to cache:yes, stop ZFS cache pool or btrfs ZFS cache pool or btrfs. Moderators and other users reply with explanations, suggestions and tips on cache-yes, A user asks how to optimize the different storage options in Unraid OS 6, including array, cache and pool. Currently it bothers me that all 3 of the array devices bring a new zfs pool with 3 mount points. 5TB drive, but hardware of the drive is 1TB. i have couple of SSDs sitting around and couple of spinny disks as well. You can have multiple drives in a single cache pool. . 1. See examples, configurations and tips for different use-cases and scenarios. I don’t use a pool but believe it is what you’re looking for. I have two 500GB SSD drives in my redundant cache pool. Than Hello, I'm trying to setup a new server with 23 cache drives using a 9206-16 (flash to IT-mode with latest firmware) and on board sata ports. (I know, Raid5 is experimental with If you put a second disk in an already existing cache pool Unraid sets them up sa RAID1 by default, which means the 2nd disk is 1:1 copy of the 1st. I did that, but still see the shares on the cache drive. Other configurations are possible for the cache pool, and some people also use unassigned disks for VMs and dockers. Data, RAID1: total=66. I understand that My cache pool thinks it is running a 1. New - DARK - Invision (Default) New - LIGHT - Invision . I'm currently not using a cache pool, my speeds for transferring files internally on unraid are slow. I am building an unraid server right now and I am trying to figure out how to setup my Cache Pools. The pool was configured to run RAID 10. img; On Array And Cache (yes)#downloads; On Array Only#. Writing to Cache Pool, very slow at 350MB/s, read at 750MB/S. Ich mache dann einfach wieder btrfs check --repair /dev/sdX1 und Wir reden hier über BTRFS RAID-1. Now if you really want to use the cache pool option is another discussion. I use the first approach with a pair of nvmes and set zfs quotas against the media data stores from the cli. By dougraid Just now in General Support. I've been w 2x1tb NVMe as main cache pool. Instead of replace the one I had, I added a second and now have a Raid 1 cache pool. assign new disk(s) to cache pool start array - a balance will begin, the stop array button will be inhibited during the operation, this can take some time depending on how much data is on the pool and how fast your devices are, progress can also I have a NAS with 2 nvmes bays and 4 HDDs bays for storage. 7. I assigned a 480GB drive as a single cache drive. I wanted to add a second nvme ssd into the pool. Followers 1. I also want to pick your brain for how I might make this setup a bit Beyond standard suggestions like moving your App Data to its own Unassign Drive (or now an Unraid Pool), there’s a new strategy I’ve been using for over a year that I’ve come to like: a single, high-performance and high-endurance NVMe as my primary cache. black suggested trying the beta which I installed, freshly formatted both NVME drives (which each are capable and tested at 3000mb/s and sustained a 1000mb/s I am about to add a cache drive(s) to my setup and I have a question about how this will work with VMs and the other folders that will prefer the cache drive (appdata, system). We hosted production from Unraid NVME drive which was formated BTRFS. 00KiB Metadata, RAID1: total=1. I'm adding a new 2x2tb SSD cache pool to have some redundancy there. I have rebuild the unraid usb multiple time, switch the cache disks around but at random one cache drives goes missing sometimes its the m2 or any of the s Suddenly had the message "Cache pool BTRFS missing device" The pool which I use for VMs and Docker, running from 2 nvme drives had a problem that a drive suddenly went missing. Hi All In the "old days" setting a dedicated fast SSD for you Plex/Emby/Jellyfin - meta data was a thing to do. 2. I was wondering if it was faster to just all the 2 new I'm running two NVMe drives (BTRFS) in RAID1 for my main Cache pool. I'm trying to create a JBOD cache pool in 6. OK, ein Problem gibt es: Nach einem Stromausfall musste ich den Server neu starten. Since VMS and dockers are running from that cache pool, i wanna make sure it just works. New - DARK - Invision (Default) New - LIGHT I would *LOVE* to have the ability to create a cache drive only unRAID rig just to run docker/vm on a multi disk BTRFS cache pool, without having to create/waste data disks. I have a cache pool with 1 x 500GB drive and 3 x 240 GB drives, all SSDs and in btrfs RAID 1 mirror configuration with 610 GB usable space across all 4 drives. 2 using 2 SSDs (500gb each) - cache pool, but the space will run out soon. Results of a check --readonly: [1/7] checking root items [2/7] checking extents data extent[85090460 On running a scrub on my BTFFS cache pool (set to correct file system errors) I have noticed the following errors, it is still running at the moment so that is just a snapshot I am running 2 250GB disks in RAID1 scrub status for 4a036a94-dbe6-4599-b53c-35f384e2f99f scrub started at Sat Dec 17 18: I was considering getting a 2nd ssd drive to create a cache pool (I have 1x 120gb ssd already serving as a cache disk formatted to BTRFS). Disable VM 2. Shutdown the server 5. Okay, so I ended up moving all the data from that pool to the array and deleting the cache pool. Subscribe. Next I had a replacement motherboard sent a Currently have a single 128GB SSD cache drive and have acquired a 2nd to add to the mix; thinking RAID 0 for performance. Would I be nuts to consider buying two external gen 2 usb SSDs to run my cache pool? Looks like near nvme speeds can be had with these but don't know about reliability When I make changes to the cache drive pool, I move everything from cache to the array, then usually just wipe cache and start from scratch with the pool. 9beta35. Go into the settings for the relevant share and adjust the setting for "Use cache pool" and "Select cache pool". when it came back, the cache pool was missing one of the members (2 member ssd pool. I tried to open them and got errors in mpv. I have the trim plugin installed and set to daily. And now after reinstalling them into the server unRAID is telling me there is no pool uuid. I This happened to me many times before with chrome, but more recently with firefox and chrome worked, in any case it's usually fixed by using a different browser, but you need to a the whole procedure with it, assign cache, start array, stop array, reboot. While SSDs are the ideal performance-oriented choice, when you st A couple days ago I found my server to be unresponsive i. 2) in my Unraid Pool. 11. tazire. invoke mover, wait for it to finish 5. Also I have two 1TB NVME SSD cache drives in RAID1 for my Docker/VM and two 1TB SATA SSD cache that I use for my Downloads/Shares. 2] Cache pool shows half of the drive. Members; 383 1 Posted February 11, 2016. disable docker 3. I just did something similar: Change the "use cache pool" option to any other option, then back to The cache is the size of what ever drives you assign to the cache pool. I think one of the drives is failing as im seeing loads of warnings. Those being that btrfs RAID-0 can be setup for the cache pool, but those settings are not saved and "revert" back to the default RAID-1 after a r Hello Unraid Forum, my Unraid server runs as media and gaming machine. I was trying to remove one of the members, so that it w I want to add an SSD as a new cache pool for my VMs to take advantage of the multiple cache pools feature. Wenn Du dem nicht vertraust, zieh einfach eine Platte aus dem Pool im laufenden Betrieb ab und teste es. Anyway, as always I am very grateful for the help you provide here - it really makes unraid stand out. I am running v6-rc1, have Parity and 4 data disks on a Plus license, and data disks are limited to that number. 5k I don't know. I don't know if this is a bug or I'm just doing it wrong so From what I understand from the below post I have to set it to single mode When I do this "convert to single mode" (it's a 14TB and 8TB disk) the I have a 2nd NVMe cache pool in raid0 for docker data and temporary download cache/location. Posted October 2, 2023. BTRFS isn Starting with the Data_cache, because the data of the other pool is currently moved. As a multi-device pool. I added two 2TB NVMes to the cache pool and let it rebuild/balance. 2) for my two SSD cashe disks. I also ran it from the terminal. The grouping of multiple drives in a cache is referred to as building a cache pool. change drives However this is a little painful and slow. I personally just kept it on my cache_appdata NVME cache, but lately IO is a concern. This will mean you are likely to start getting problems if the 'cache' pool gets anywhere near full. That means your A user asks for advice on how to set up a cache pool and appdata for unRAID, a software-defined storage platform. Now i have two Disks in my Cache. 2x 240GB SATA SSDs for cache. Then go to cache drive page and increase your cache drive slots by one. 2] Cache pool shows half of the drive Followers 1 [6. I killed a zombie container process accessing /dev/loop2, but still cannot detach /dev/loop2 and still stuck trying to unmount. Ice_Black. 6: 1. All is in RAID 1 on the pool. By DGB May 20, 2023 in General Support. Is it correct, that I can simply swap 1 of the drives, and on reboot, select the new drive, in the dropdown where it says missing disk. If I lost that drive I would just have to re-run my docker-compose files and reinstall all my dockers, something super easy. New - DARK - Invision (Default) New - LIGHT Hi Guys, I have 2x cache drives (m. Members; 3. I closed the VMs, took a diagnostics, and rebooted. 7k Hi All, I've run into a bit of an issue that I think is stemming from some corruption errors in my cache. I use the server for automatic media management (with the arr's & hardlinks), also some VM's, backups of our pc's, and some docker containers. Array shows However, I was unable to access any of my Docker Containers or VMs. I had a power outage and for some strange reason it combined my ssd cahce pool to one drive. Current configuration is a 3 SSD's in a BTRFS Raid5 Pool. By Ameldr. What I have done is: 1. Your mover will run (usually at night) and move your data off the cache pool onto the array. I've added an SSD to my Unraid box, and then I proceeded to add the SSD as a cache drive and subsequently setup a BTRFS cache drive pool with my previously existing cache drive. The default configuration for the cache pool is btrfs raid1 so you get a mirror. 9. Now obviously I do not want to as I don't wa In Unraid 6. Might split that out later if the number of dockers grow too much. To avoid using the old approach of having the mover temporarily move shares off the old pool and then back onto the new Before I had a single cache drive and could copy from my Windows Desktop machine at 1000mb/s over my fibre connection, I wanted redundancy so created a cache pool to get only 230mb/s @johnnie. You can also decide to have some data live on the cache pool for faster access (eg. I have the option between BTRFS and ZFS. It was noted that I could start the array with the single Cache drive so I did so. BTRFS isn't production ready. A couple of days ago, I changed the cache pool from the default setting of raid1 to raid0 to see if it would speed up access times for the hard drives enough to make them a good place to store vdisks for my vms. can somebody clarify how i can fix this In v6. Since with v6 we can now run VMs it is obviously ideal to have those VMs run in a cache pool for added performance. And im hoping to use as many as i can as my cache to maximise the speeds and capacity of my cache pool (as the unRaid main data pool is far too slow for normal writes). The server will contain 6 total drives, 12TB 7200rpm as the Hello, i always had my ssd cache pool as Raid 1. Find out how to assign devices, start and stop the arra The Unraid cache setting for each share defines how data on that share uses the cache pool. After that I was able to start unraid but my cache pool (2x 1TB SSD as raid 1 btrfs encrypted) showed up as "unmountable: no file system". I pulled the drives that make up the cache pool and plugged them into my desk top to test. 2 gen 2 ports. That's a pain because the PCIe to NVMe one doesn't get much cooling so it tends to get a bit toasty. In that case, two videos have been created for a step-by-step guide through upgrading your Unraid Stop the array, if Docker/VM services are using the cache pool disable them, unassign the current cache device, start array to make Unraid "forget" current cache config, stop array, reassign the other cache device I had looked over some different threads (listed below) that discuss how the cache pool is currently implemented in unRAID and its current limitations. I’ve posted on this topic before, but the topic got a bit sidetracked (by me). My Configuration looks like: I think this is not in raid 1 mode Also i think aobut it from the read/write Operations in the first Scr I have an Unraid server running 7 8TB HDD's + 1 8TB HDD as parity. I'm thinking of adding a cache pool with this Corsair MP600 PRO LPX 4TB M. This is relevant for your Unraid system as it allows you to configure cache pools as RAID 1 for data mirroring or RAID 0 for speed. I am testing out Cache pool for the the first time First SSD: 250GB Second Hello, I was working on replacing my cache drive, but I think I may have done it in an odd way. It's currently moving everything out of the cache. But when i show in de documentation and on my Cache Info. I recently resolved an MCE event by replacing hardware. Quote; JorgeB. I notice that you have not set a Minimum Free Space setting on either the cache pool or the appdata share. 35mb used which is so weird , can someone explain what's going on? [6. Pre-Install Configuration suggestions - File System, Cache Pool, etc. If something fails during a transfer I won't lose it? Be I just bought 2 new 1TB NVME SSDs for an existing cache pool in unraid. Does anyone know? I want the data protection (nr. Stay informed about all things Unraid by signing up for our monthly newsletter. A month or so ago, the cache pool seemed to drop out of nowhere, and any shares with the cache pool obviously seemed to stop working. Nun ist es so das nach jedem Neustart oder Reboot das selbe wieder passiert. When I use Windows (so, SMB) to copy from sh In an effort to keep the thread clean and on point, I adjusted this thread to the single issue it helped resolve, Corruption on the cache pool. Only the 1st drive ever appears to receive reads/writes, and in ge Hi All In the "old days" setting a dedicated fast SSD for you Plex/Emby/Jellyfin - meta data was a thing to do. Ok just a quick question about this. Other users reply with explanations, tips and links to resources on cache With multiple pools, these users can now set up a pool of HDDs for the purposes of write caching over the 1gbps network, leaving the full performance and capacity of their SSD pool for the applications that can Unraid cache pool defaults to BTRFS RAID1 which stores 2 copies of your data and spreads those copies among all cache pool members. Individual schedules for different cache pools would be ideal. hawihoney. Hello, Wondering if anyone can help me with an issue I am having with my Cache pool. Setup two cache pools one for appdata/container data and a second pool for downloads. Members; 368 Posted May 27, 2018. 00GiB, used=9. pappaq. I keep having issues with devices in the cache pool disappearing from the system. I then ticked the format box Unraid doesn't support more than one partition per disk. Harnessing the Power of ZFS on Unraid. Suppose you have decided you want to use ZFS on your Unraid server. The commonest cause for this is simply new users misunderstanding the Use Cache setting for a share and getting the Yes and Prefer settings back-to-front. What it's still not clear to me is how much this differs from standard RAID1 and how does it match different capacity disks Cache Pool size issue Cache Pool size issue. zip Jump to content The Unraid Annual Cyber Weekend Sale is here 🔥 × Hey Guys, I need some help. As an unassigned Dr Hi, I have been running Unraid for a couple of years without problems, but recently I get kernel panics trying to mount the cache pool. I then added a 256GB drive to the cache (I pre-cleared it, even though I did not need to), it did no 2/ Cache Pool : I understand that it is the best choice. i have 4 SSDs (2x 500gb EVO 960 nvme, 250gb EVO 850, WD 256gb nvme) setup as cache drives in my unraid. That means your drives will give you a 500GB mirrored cache. I second this! We are running regular large backups, which I would like to run via a cache to make full use of 10gbe), but these would need to be moved off that cache quickly due to size restrictions. So I searched through the forum and found some topics which looked helpful. What is the easiest/best method? Replace one at a time and rebuild? Or copy all data off the cache pool and create a new one? Thanks for any input. The unRAID cache pool is created through a unique twist on traditional RAID 1, using a BTRFS feature that provides both the data redundancy of RAID 1 plus the capacity expansion of RAID 0. 2 nvme to see if that would fix it, but it did not and both the other SSDs dropped multiple times. 12. For now it's working fine. Removed the failing SSD from the cache 3. The usual setup is to have /data use Cache “Yes” so that writes are to the cache pool and things Beyond standard suggestions like moving your App Data to its own Unassign Drive (or now an Unraid Pool), there’s a new strategy I’ve been using for over a year that I’ve come to like: a single, high-performance and A user asks how to replace smaller cache pool drives with larger ones without disabling VM and docker. It give the flexibility to add, remove or even upgrade disks at a later time without needing to recreate the filesystem again and copy the data, so this is why it's a good fit for Unraid. Hi all I added a second Disk to the Cache. Cache can be SSD or HDD based. So is the "right" setup a dedicated cache_ plex or a separate UAD Nvme? I guess the cache with ZFS Hi guys. Reply to this topic; Start new topic; Recommended Posts. I'm using a 30 drive array now, and using 4 SSD drives as cache only, with only the docker/vm images on the cache pool. So if you want to increase the number of cache drives then the number of array drive slots should be decreased if available. abkg pyyc tmfvcyx ejzy eckpi odb hpqzon kusr jtjb pzocpy