186 priority sync errors


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Errors there are read errors that were corrected on the fly, so at that moment, no files are damaged.

 

Your Parity sdg disk definitely has read errors - critical medium error:

Mar  1 09:15:52 Jewel kernel: sd 7:0:5:0: [sdg] tag#158 UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
Mar  1 09:15:52 Jewel kernel: sd 7:0:5:0: [sdg] tag#158 Sense Key : 0x3 [current] [descriptor] 
Mar  1 09:15:52 Jewel kernel: sd 7:0:5:0: [sdg] tag#158 ASC=0x11 ASCQ=0x0 
Mar  1 09:15:52 Jewel kernel: sd 7:0:5:0: [sdg] tag#158 CDB: opcode=0x88 88 00 00 00 00 01 d1 17 f7 38 00 00 01 d0 00 00
Mar  1 09:15:52 Jewel kernel: blk_update_request: critical medium error, dev sdg, sector 7802976056 op 0x0:(READ) flags 0x0 phys_seg 58 prio class 0
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802975992
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976000
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976008
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976016
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976024
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976032
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976040
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976048
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976056
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976064
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976072
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976080
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976088
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976096
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976104
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976112
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976120
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976128
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976136
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976144
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976152
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976160
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976168
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976176
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976184
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976192
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976200
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976208
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976216
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976224
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976232
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976240
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976248
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976256
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976264
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976272
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976280
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976288
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976296
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976304
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976312
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976320
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976328
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976336
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976344
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976352
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976360
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976368
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976376
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976384
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976392
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976400
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976408
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976416
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976424
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976432
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976440
Mar  1 09:15:52 Jewel kernel: md: disk0 read error, sector=7802976448

 

If you want, make a second Parity sync. Check if more errors come up after the run. If yes, it can be the cable or the disk. For me it looks like the disk because of Pending sectors, no cable should cause this. Be extra sure that there are not Party sync errors but only read errors on the disk. Parity sync errors means data can not be rebuild correctly, luckily your Parity disk does not contain data, but if another disk failes, you could end up with lost data because the Parity disk can not rebuild from the error sectors. This means, the corrected read errors are rebuild from the remaining disks on the fly. If another disk failes, these read errors will result in data loss as you only have one parity.

 

If you want to be extra sure, replace cable and do another Parity sync (or replace cable before the second Parity sync).

If there are any more read errors and it is not the cable: Replace disk. Nothing is worse than data corruption because a failing disk was there for too long. Really, replace it. You cannot rebuild your data from a faulty parity disk.

 

I had this too, replaced my disk as it always showed errors during each Parity sync and now the errors are gone. Never had a faulty cable I have to admit...

 

Edited by Addy90
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