comet424 Posted February 11, 2022 Share Posted February 11, 2022 (edited) so on my 1 unraid server.. i added a 2nd drive.. my 1TB drive i use to download to filled up. for all windows downloads game updates etc i added a 2nd drive a 2TB to add 3TB but i guess its mirrored? as i only get 1.5TB file size... but the issue says i using 400GB when really im using 800 GB of data... and free space is 500GB i did a reboot and it didnt fix it is there a checker to fix the issue? do i run that scrub button to fix it? krusader shows different... and the raid1: picture that is from clicking the first drive.. the 2nd drive doesnt show it update: i currently clicked the scrub button but dunno if that will fix it? Edited February 11, 2022 by comet424 Quote Link to comment
JorgeB Posted February 11, 2022 Share Posted February 11, 2022 Default is raid1, you can convert to single profile to use all the available space. Quote Link to comment
comet424 Posted February 11, 2022 Author Share Posted February 11, 2022 (edited) what does a single profile mean? i know when i plugged the drive in it said there was too many profiles and to ignore the error till btrfs done balancing so raid 1 is mirror then right? so shouldnt the diskspace say 844Gb used not 426gb used as the used gbs would be still wrong even if i convert to full space the main page reports the wrong disk space used it says 1.5TB diskspace in a mirror.. but actually when you add up Used + Free space its 998Gb so its 1TB yet its missing 500Gb to equal 1.5TB main page said 426gb used 572gb free Krusader says 844gb used 532gb free the krusader is more accurate then the main page so i clicked that scrub button to see if it will fix the mainpage saying 426 and fix it to 844gb Edited February 11, 2022 by comet424 Quote Link to comment
JorgeB Posted February 11, 2022 Share Posted February 11, 2022 7 minutes ago, comet424 said: the krusader is more accurate then the main page It's not, most other utils are not reliable with btrfs for used/free space, GUI will show the correct stats for that pool, except total capacity when in raid1 mode because of the different size devices, used/free are correct though, total capacity would be 1TB, with single profile everything will be correct. Quote Link to comment
comet424 Posted February 11, 2022 Author Share Posted February 11, 2022 (edited) ok i lost when i had a Single Disk 1TB drive i filled it up so it was 800Gb+ Used (main page and Krusader) when i added a 2nd Disk 2TB to the drive Used Space is now in the 400Gb how did physically 400Gb go missing? cuz shouldnt it be 800GB used 500 gb free 1.5TB pool 800GB used 500 gb free 3.0TB pool cuz the gui is not showing the correct stats of the pool for used gig main page says 1TB actuallly 998gb = 1500 gb (1.5tb) so why is gui page loose 400gb of diskspace at least it should really say 800gb used 500gb free of 1.5tb free the math on the GUI page doesnt add up Edited February 11, 2022 by comet424 Quote Link to comment
JorgeB Posted February 11, 2022 Share Posted February 11, 2022 6 minutes ago, comet424 said: the math on the GUI page doesnt add up 24 minutes ago, JorgeB said: GUI will show the correct stats for that pool, except total capacity when in raid1 mode because of the different size devices Quote Link to comment
comet424 Posted February 11, 2022 Author Share Posted February 11, 2022 so its a glitch/bug then and your said Total Capacity.. i said "used space" not "total capactiy" as total capacity is different to used space so what happens if i add a 3rd drive? so be 1TB 2TB 3TB does it take the used diskspace from 800gb (single disk ) to 400gb (2 disks) to 200gb used (3 disks) is that how the math works so in the end its best to get same size drives when doing the mirror mode... as i dont mind the mirror option but i just dont want the gui throwing me errors when math doesnt add up to me its like unraid compressiongs 800 phyiscal data down to 400 gb physical data to me it should still say 800 gb used 500gb free of 1.5TB pool as to me unraid does super compression but thanks for the input learn something everyday if its mixed drive dont do mirror.. only do raid 0 if its same sized drive then u can do mirror propperly i appreciate it...i just dont want gui kicking me any errors etc Quote Link to comment
ChatNoir Posted February 11, 2022 Share Posted February 11, 2022 You can check what to except with various disk size and number as well as various BTRFS profiles. https://carfax.org.uk/btrfs-usage/ Quote Link to comment
comet424 Posted February 11, 2022 Author Share Posted February 11, 2022 (edited) @ChatNoir that helped alot i see i see its not good to use 1TB and 2TB drives together... Striping the Data Raid 0 says you get 3TB yet 1TB is unusable so stripping data is 2TB usuable.. i guess you loose 1TB of data striping the data between 2 odd ball drives but if its 2 2TB drives no unusable.. if you have 2 1TB thats ok to Stripe data if its 2 2TB drives thats ok to Stripe Data.. but if its 1TB and 2TB drive its not good to strip that data you loose data shows best to keep it a single Disks.. damn odd ball drives i have lol seems if its always an odd ball number you loose data Stripping data no matter what if you had a 2Tb and a 6TB stripped to 8TB only 4TB is usuable and 4TB is unusable too so kinda confusing but i guess best practice ... do not mix drives in the end for cache least not odd balls keep it 2 2 2 or 6 6 6 or 1 1 1 1 sizes when you use a 6TB and 2TB Drive stripped you have 0 disk space you can use in the end Total space for files: 4000 Total raw disk space: 8000 Unusable: 4000 region 0 Usable 4000 Disks/alloc 2 but i guess how it works is 2TB (2TB drive) + 2TB (6TB drive) = 4 usuable and 4TB left on the 6TB is unusable i guess what the raid0 does is basiclly what the parity drive does... only as big as its biggest drive or really smallest drive Edited February 11, 2022 by comet424 Quote Link to comment
comet424 Posted February 11, 2022 Author Share Posted February 11, 2022 so i tried the Raid 0 and Single drive and Best Performance i get the 2.57TB free diskspace yet Used disk space is still 427gb when used disk space should be 800 and something might just just move the 800 gig of files to the array then redo the download pool drive remove the 1TB and then move the 800 gb of files to the 2TB drive it should report 800 gb or will its report 400gb? Quote Link to comment
comet424 Posted February 12, 2022 Author Share Posted February 12, 2022 (edited) so i have question if the gui main page orginally said my 1TB cache pool was full as i couldnt write to it anymore.. it was 46gb and i had min set to 50gb and when i added the 2nd drive as you seen above and it brought down the file size from 1TB less 50gb down to 400 and something gb does that mean there was lost files broken files that unraid said there was files but there wasnt... is that what the scrub is for.. to scan the drive and remove the false file size display.. i remember years ago there was a program for windows were say it says 100gb used but really on a usb that was only 32gb say or can u use TRIM on a spinner drive? as i using a spinner not a SSD and after i moved the files to the array.. and removed the 2TB drive and then formated the 1TB to be a cache pool again.. now when i moved the files back off the array to the download drive.. it no longer reports 1TB used in gui main page but 400 used and like 500 free for the 1TB ... so 500gb was lost in dead etc? and i do regular cleaning of the Recyling Bin so the files werent there.. so what would cause it to balloon a a move from the pool to the array then basiclly a format i guess then move back fixes it? is there a regular scan to clean up the pool? and does this ever happen on the array? Edited February 12, 2022 by comet424 Quote Link to comment
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