Raki72 Posted June 17, 2019 Share Posted June 17, 2019 Hi, I just started yesterday to create a pool of 8 x 6 TB data plus 2 x 6 TB parity. The parity building is supposed to take about 6 days. Is there a way to speed this up by increasing I/O priority or so (just like in the good old mdadm days)? Thanks! tower-diagnostics-20190617-1638.zip Quote Link to comment
itimpi Posted June 17, 2019 Share Posted June 17, 2019 No. The parity check always runs flat out according to what your hardware supports. Having said that 6 days sounds too long so not sure what is causing that. Quote Link to comment
trurl Posted June 17, 2019 Share Posted June 17, 2019 2-3 hours per TB of parity, so 12-18 hours would be normal. Something abnormal for you. On mobile now so will look at diagnostics later if nobody else does. Quote Link to comment
JorgeB Posted June 17, 2019 Share Posted June 17, 2019 There is something writing to disk1 Quote Link to comment
Raki72 Posted June 17, 2019 Author Share Posted June 17, 2019 (edited) 27 minutes ago, johnnie.black said: There is something writing to disk1 I stopped this writing on disk 1 in the meanwhile. But still the creation speed on both parity disks is 30 MB/s. Is this normal? There is plenty of CPU and IO available... Edited June 17, 2019 by Raki72 Quote Link to comment
JorgeB Posted June 17, 2019 Share Posted June 17, 2019 Post new diags without writes. Quote Link to comment
Raki72 Posted June 17, 2019 Author Share Posted June 17, 2019 (edited) 4 hours ago, johnnie.black said: Post new diags without writes. Here we go. Thanks for your support. Could it be that my system is hitting the maximum bandwidth of USB 3? tower-diagnostics-20190617-1902.zip Edited June 17, 2019 by Raki72 Quote Link to comment
Abzstrak Posted June 18, 2019 Share Posted June 18, 2019 9 hours ago, Raki72 said: Here we go. Thanks for your support. Could it be that my system is hitting the maximum bandwidth of USB 3? tower-diagnostics-20190617-1902.zip 107.88 kB · 1 download you're using USB? yeah, that will make it slower for alot of reasons and the overhead usb bring along... if you are going to use usb, expect it to be alot slower than if it were sata/sas. Quote Link to comment
JorgeB Posted June 18, 2019 Share Posted June 18, 2019 USB is not recommended for array devices, for performance and reliability reasons. Quote Link to comment
Raki72 Posted June 18, 2019 Author Share Posted June 18, 2019 Makes sense. Thanks for all your support. Quote Link to comment
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