Interesting. What file system are you using? XFS? EXT4? Have you looked at /var/log/messages and/or dmesg to see more details about the error?
I wonder if there is an error in the file system. > I wrote about errors on my RAID-1 array: >>> $ cat myfile >>> cat: myfile: Input/output error >>> >>>...how to figure out which (if any) of the two SSDs is faulty? > > On October 13, 2025, Rich Pieri wrote: >>Break the mirror and see which one still faults. > > I tried to do this, and weirdly, both drives still faulted on the same > file. Here's what I did: > > 1. Boot on a rescue CD. (Since the array is my root partition.) > > 2. Create a RAID-1 array containing just one of the SSDs: > > $ sudo mdadm --assemble --readonly /dev/md0 /dev/nvme0n1p1 --run > > 3. Mount the array and try the same "cat" command. It produces an > input/output error as before. > > 4. Stop the array: > > $ sudo mdadm --stop /dev/md0 > > 5. Repeat the process for the other SSD, /dev/nvme1n1p1. Same result! > > When *both* drives from an array produce the same disk error > independently, where does the actual problem lies? > > Or did I do something wrong? > > Thank you again, > Dan > _______________________________________________ > Discuss mailing list > [email protected] > https://lists.blu.org/mailman/listinfo/discuss > _______________________________________________ Discuss mailing list [email protected] https://lists.blu.org/mailman/listinfo/discuss
