February 22, 20242 yr I just fully recreated my array after clearing all partitions and issuing a new config. I assigned all disks to the array and ran the format but the initial parity check after array boot is running extremely slowly (10 MBps or slower that dips down to 1 MBps frequently). I have already used the DiskSpeed docker plugin to verify all disks are operating at appropriate speeds and cannot figure out where the slow down is coming from. I would appreciate any help that can be given. Array is 11+1 8TB drives with the 1 as parity. Edited February 22, 20242 yr by teddyschell91 misstype
February 22, 20242 yr Author 1 minute ago, JonathanM said: Are you writing data to the array currently? Diagnostics may shed some light. No nothing has been done other than creation then running the parity check, no writes should be occurring
February 23, 20242 yr Community Expert Feb 22 11:51:18 LilAnton kernel: sd 1:0:1:0: Power-on or device reset occurred Feb 22 11:51:18 LilAnton kernel: sd 1:0:2:0: Power-on or device reset occurred Feb 22 11:53:45 LilAnton kernel: sd 1:0:3:0: Power-on or device reset occurred Issues with multiple disks, these usually mean a power/connection issue.
February 23, 20242 yr Author 7 hours ago, JorgeB said: Feb 22 11:51:18 LilAnton kernel: sd 1:0:1:0: Power-on or device reset occurred Feb 22 11:51:18 LilAnton kernel: sd 1:0:2:0: Power-on or device reset occurred Feb 22 11:53:45 LilAnton kernel: sd 1:0:3:0: Power-on or device reset occurred Issues with multiple disks, these usually mean a power/connection issue. That may have been intentional based on the timeframe, I think when I saw initial slowness I paused the parity then issued a reboot on the host. That aside when I pulled it up this morning the speeds appear to have increased dramatically. Perhaps just an issue with early steps in the parity?
February 23, 20242 yr I'd still check if the cables are somehow loose on the board or the HDDs when the parity check is done. Just to be on the safe side... connection issues can cause a lot of problems down the road even if it works now.
February 23, 20242 yr Community Expert 6 minutes ago, TeddyS. said: I think when I saw initial slowness I paused the parity then issued a reboot on the host. That cannot cause those errors, they are hardware errors.
February 23, 20242 yr Author Understood perhaps a SATA connection issue somewhere. I will check them over.
February 23, 20242 yr 3 minutes ago, TeddyS. said: Understood perhaps a SATA connection issue somewhere. I will check them over. Also check power connections esp. if you are using power splitters or recently changed something around.
February 23, 20242 yr Author 4 minutes ago, Rysz said: Also check power connections esp. if you are using power splitters or recently changed something around. No recent changes at the moment, I do have I think two SATA power extensions to add 4 more connections off the existing SATA chain cable. Maybe one is loose.
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