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1000001101000 / Debian_on_Buffalo

Tools for Installing/Running Debian on Buffalo ARM based Linkstation/Terastation/Kurobox/Cloudstor devices.
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Successful install on LS-420, but slow performance #218

Open cgmorlock opened 5 months ago

cgmorlock commented 5 months ago

Installation was successful, and I was able to keep and use all existing partitions, including RAID-1 array, however getting periodic issues where it will 'pause' for 30-40 seconds.

dmesg shows following continuously repeating:

status: { DRDY } hard resetting link SATA link up 1.5 Gbps (SStatus 113 SControl F310) configured for UDMA/33 retrying FLUSH 0xea Emask 0x4 EH complete exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen failed command: FLUSH CACHE EXT cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 19 res 40/00:01:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)

Any suggestions on how to remedy?

1000001101000 commented 5 months ago

I’d start by looking at the SMART data for relocated sectors and errors, I’d also run a “long” SMART self test.

cgmorlock commented 5 months ago

I was able to resolve the issue by rebuilding the array. Not sure why I had to but when I specified the array and devices on the mdadm command rather than relying on the --scan, it rebuild the array and I am no longer seeing any issues.

mdadm --assemble /dev/md10 /dev/sda /dev/sdb took about 26 hours to complete, but that seems to have resolved the issue.

1000001101000 commented 5 months ago

I’d still check the SMART data on both drives.

the performance loss could be largely the array becoming degraded and rebuilding will fix that. The question is why it became degraded in the first place. The errors you posted indicated it’s getting errors reading a drive, that could mean the drive is starting to fail. If so it’ll probably become degraded again in the near future.