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"READ DMA" errors are not typically caused by any firmware issues, they are usually caused by hardware issues. Mind you, I have no idea what disks you are using.
Quarath wrote:I upgraded the disks firmware
Did the manufacturer recommend doing this with a live disk, in use as part of a RAID?
If your data is good and accessible back it all up right now. Then:
- Unmount the array.
- Delete the array.
- Delete the disks.
- Test each disk with the manufacturer's diagnostic software. Make sure each disk passes a "long" or "full" test, replace a disk that does not.
- Update firmware if/as desired on any/all disks.
- Wipe/prepare the disks for use as per the FAQs.
- Add the disks.
- Create a new SoftRAID1 array.
- Format the array.
- Mount it.
- Restore your data from backup.
- Since it is not possible to know exactly what a firmware upgrade will do/cause, avoid them in the future unless the drives have no critical data on them.
I have never found it necessary to change a drives' firmware to fix errors in the past, never done it. Drives either work or they don't.
If you cannot access your data and do not have a backup we will have to do more troubleshooting. Please post here again if you have further questions about this issue.