X500658 Posted June 17, 2022 Share Posted June 17, 2022 Why is my Parity Sync running at ~2 MBps? I usually got 90-105 MBps before. Was adding a new drive (for 2nd parity) affecting it? Also disk3 gave read errors after pausing parity to post this, is it related to it? tower-diagnostics-20220617-2158.zip Quote Link to comment
JorgeB Posted June 17, 2022 Share Posted June 17, 2022 Constant ATA errors on disk3, check/replace cables and try again. Quote Link to comment
X500658 Posted June 17, 2022 Author Share Posted June 17, 2022 just to confirm, the problem isn't with the parity drive, right? just disk3 being annoying? Quote Link to comment
JorgeB Posted June 17, 2022 Share Posted June 17, 2022 The ATA errors are from disk3, looks like a power/connection problem. Quote Link to comment
X500658 Posted June 17, 2022 Author Share Posted June 17, 2022 So disk3 became unmountable, I failed at xfs_repair -L (got stuck at "phase 7 format log to cycle 4"), all data was lost (byebye plex library) Now I'm trying to preclear it. the drive only says ST4000VN008 (lacking the -2DR166 in the model) and its at 10-15MBps. How badly did I mess up and can this still be fixed? Quote Link to comment
JorgeB Posted June 17, 2022 Share Posted June 17, 2022 2 minutes ago, X500658 said: So disk3 became unmountable, I failed at xfs_repair -L Was that after replacing the cables? Quote Link to comment
trurl Posted June 17, 2022 Share Posted June 17, 2022 2 minutes ago, X500658 said: Now I'm trying to preclear it. No good reason to preclear a disk with data on it, and plenty of good reasons to not do that. Post new diagnostics. Quote Link to comment
X500658 Posted June 17, 2022 Author Share Posted June 17, 2022 yes, replaced cables and also did -n Quote Link to comment
X500658 Posted June 17, 2022 Author Share Posted June 17, 2022 3 minutes ago, trurl said: No good reason to preclear a disk with data on it, and plenty of good reasons to not do that. Post new diagnostics. I know, but I gave up on that data. I'll just hunt for new stuff tower-diagnostics-20220618-0057.zip Quote Link to comment
JorgeB Posted June 17, 2022 Share Posted June 17, 2022 Disk is still showing a crazy amount of ATA errors, and not even giving a valid SMART report, if you replaced both cables you'll likely need to get a new disk. Quote Link to comment
X500658 Posted June 17, 2022 Author Share Posted June 17, 2022 could being at the end of a molex to 5-sata cable be the cause? Quote Link to comment
trurl Posted June 17, 2022 Share Posted June 17, 2022 8 minutes ago, X500658 said: could being at the end of a molex to 5-sata cable be the cause? Yes Quote Link to comment
X500658 Posted June 17, 2022 Author Share Posted June 17, 2022 Oh damn, I'll transfer that drive and plan for a larger & better PSU. for future reference, how many drives is recommended from a molex line? Quote Link to comment
JonathanM Posted June 17, 2022 Share Posted June 17, 2022 58 minutes ago, X500658 said: Oh damn, I'll transfer that drive and plan for a larger & better PSU. for future reference, how many drives is recommended from a molex line? 11 Amps per pin is the rated maximum for the connector itself. How many drives is a more complex question, and depends on the rating of the PSU, the upstream connectors involved, wire gauge, etc. You should try to divide your drives as evenly as possible between the available PSU leads. Quote Link to comment
trurl Posted June 17, 2022 Share Posted June 17, 2022 1 hour ago, X500658 said: I know, but I gave up on that data. Still no good reason to preclear it, unless you intend to assign it to a NEW slot in an array that already has valid parity. That is the only scenario where Unraid requires a clear disk. A clear disk is all zeros and so parity remains valid when adding a clear disk to a new slot. And if Unraid does require a clear disk (only that scenario), it will clear it if it isn't already clear. Quote Link to comment
X500658 Posted June 17, 2022 Author Share Posted June 17, 2022 8 minutes ago, JonathanM said: 11 Amps per pin is the rated maximum for the connector itself. How many drives is a more complex question, and depends on the rating of the PSU, the upstream connectors involved, wire gauge, etc. You should try to divide your drives as evenly as possible between the available PSU leads. Silverstone ST70F-ES230 700W, 80+ plain/bland It has two molex lines with a 5-sata adapter (HDD, SSD, 3 HDDs) and 2-sata adapter (2 HDDs), one 2 sata line (2 HDDs) and one 2-sata line that became a failed 4-sata mod (cut too deep that it cant power drives) Now knowing that the 5-sata adapted molex line can't handle it properly, I plan to turn it to (3 HDDs, 2 SSDs) and move disk3 to the other molex/2-sata line, whichever has the vacancy. 8 minutes ago, trurl said: Still no good reason to preclear it, unless you intend to assign it to a NEW slot in an array that already has valid parity. That is the only scenario where Unraid requires a clear disk. A clear disk is all zeros and so parity remains valid when adding a clear disk to a new slot. And if Unraid does require a clear disk (only that scenario), it will clear it if it isn't already clear. Lesson learned, especially now that I'm using 4TB drives that reach 10 hrs preclearing or parity syncing 😭 Quote Link to comment
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