Data-rebuild super slow (< 1 MB/sec)


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There appears to be a connection problem:

 

May 29 19:00:07 Tower kernel: ata1: hard resetting link
May 29 19:00:13 Tower kernel: ata1: link is slow to respond, please be patient (ready=0)
May 29 19:00:17 Tower kernel: ata1: COMRESET failed (errno=-16)
May 29 19:00:17 Tower kernel: ata1: hard resetting link
May 29 19:00:19 Tower kernel: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
May 29 19:00:20 Tower kernel: ata1.00: configured for UDMA/33
May 29 19:00:20 Tower kernel: ata1: EH complete
May 29 19:00:21 Tower kernel: ata1.00: exception Emask 0x50 SAct 0x0 SErr 0x4090800 action 0xe frozen
May 29 19:00:21 Tower kernel: ata1.00: irq_stat 0x00400040, connection status changed
May 29 19:00:21 Tower kernel: ata1: SError: { HostInt PHYRdyChg 10B8B DevExch }
May 29 19:00:21 Tower kernel: ata1.00: failed command: READ DMA EXT
May 29 19:00:21 Tower kernel: ata1.00: cmd 25/00:40:18:79:11/00:05:00:00:00/e0 tag 0 dma 688128 in
May 29 19:00:21 Tower kernel:         res 50/00:00:5f:4c:6a/00:00:00:00:00/41 Emask 0x50 (ATA bus error)

 

Replace cables.

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Can you see from the log, which cable is it?

 

The cable should be fine though as it has been perfectly working with the replaced disk (which was working well).

 

I can plug the cable better in again and try again. Question though is whether I can shut down the server and then restart the rebuild?

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from the smart log on disk13 the diskready and notready counts might be concerning, Also i cannot locate those erors on any of my smarttests

0x0009  2            5  Transition from drive PhyRdy to drive PhyNRdy
0x000a  2            5  Device-to-host register FISes sent due to a COMRESET

this article speculates that may be a failing drive or error on drive

https://superuser.com/questions/1027912/many-transition-from-drive-phyrdy-to-phynrdy-causing-latencies-in-windows-7

 

Edited by Fiservedpi
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You can run the run xfs_repair in maintenance mode from the link above or maybe test a different drive in slot 13 to rule out cables/controller if you have a spare one, if that works then RMA the drive. What are the speeds when moving data to the drive? are they normal or crap? just moving data not a rebuild 

Edited by Fiservedpi
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1 hour ago, steve1977 said:

Done, see log. Thanks!

No need for new diags, jun run xfs_repair (without -n) and it should fix the filesystem, if it doesn't post the xfs_repair output.

 

Note, there were still ATA errors on the previous diags, though only 1, but there's still a connection issue.

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