November 9, 20232 yr Hello folks i have today an array of 17 disks and a pool of ZFS i download to. But latley have the ZFS pool started to get full for some reason so i started a mover session by myself and i noticed it onley writes to my array in 2.5 -> 8,2 MB sometimes 12Mb at maximum for some sec. And i have no ideas left af read every guide on Write cash, Turbo write and reconstruct write and i cant figure out whats wrong now anymore. Please can someone smarter than me see if you can find anything Best regards a confused Swede ph2-diagnostics-20231109-1523.zip
November 9, 20232 yr Community Expert Which share are you moving to? Note that most free allocation method can be much slower, also if they are small files the mover itself will be slow.
November 9, 20232 yr Author Im moving From ZFS/media/film to array/media/film And most of the files are around 50gb in size. Changed setting to high water now.
November 9, 20232 yr Author Do i need to restart unraid to know the difference or will it affect direct? its still the same and i have restarded mover but still 2.0 ->8MB/s sometimes at 14MBs Attached new file after the changes ph2-diagnostics-20231109-1753.zip Edited November 9, 20232 yr by Effoc
November 9, 20232 yr Community Expert 40 minutes ago, Effoc said: Do i need to restart unraid to know the difference or will it affect direct? Not but turbo write is disabled now, enable it.
November 9, 20232 yr Author Tryed restart the server and now is the tranfer speed 3.9MBs to 8.1MBs Mover is moving to disk 5 (sdad) ib the array One thing that hits me now is the HDD has writen 4Kn on it if that has to do something whit it Made some math now if i tranfer at 3MBs it gonna take me 30days to tranfer 1 Terabyte and i have 6 Tb Edited November 9, 20232 yr by Effoc added picture and info
November 10, 20232 yr Community Expert It doesn't look like a mover problem to me, transfer something directly to the array to see if it's the same.
November 10, 20232 yr Author Dit that yesterday. Transfered from my pc direct to disc 5 and same speeds
November 10, 20232 yr Community Expert So it's a general speed issue, unrelated to the mover, start by running the disk and controller tests using the diskspeed docker.
November 10, 20232 yr Community Expert Yes, but test all disks and also do the controller bandwidth tests.
November 10, 20232 yr Author 18 minutes ago, JorgeB said: Yes, but test all disks and also do the controller bandwidth tests. Doing one now just wanted to provide some info as fast as possible. Edited November 10, 20232 yr by Effoc
November 10, 20232 yr Community Expert Solution Everything looks normal, only thing I see that raises a concern are the controllers, the LSI in IT mode is fine, though the firmware should be updated, but there's also an LSI MegaRAID controller, there could be something with the write cache or config that is slowing down the writes, and please note that RAID controllers are not recommended in general.
November 10, 20232 yr Author Starnge it have worked fine always before. But i can try to erase everything and separate everything so all disks on the array is on the same raid card
November 10, 20232 yr Community Expert If you can start over start with a small array, even just one disk on a different controller, no parity initially, and retest.
November 10, 20232 yr Author Will do its 1 year of harvesting files but wtf need to find out whats wrong
November 10, 20232 yr Author Removed all the HDDs from the other raid card and now its full steam ahead
November 10, 20232 yr Author Im so confused now and this is like watching paint dry. Now im back at 2mb -> 12mb again And it have been like this for 2 houers now
November 11, 20232 yr Community Expert Doesn't seem very likely but possibly one of the disks has slow sectors, temporarily disable turbo write and check if it speeds up.
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