All,

 

When logging into my array this morning, I got a notification that one of my disks (disk 5) is disabled, and it's contents are being emulated.  Diagnostics are attached. The smart report for the drive basically shows that the drive isn't there, so there's nothing there at the moment.

 

Looks like the errors occurred early this morning, but there might have been earlier issues.

 

I know rule number one with unraid is to post before you do anything, so I haven't rebooted or anything else.

 

I can buy another drive to replace the one at issue.  I also have enough space on the array that I could move the contents onto other drives pretty easily - but I know that once there is a failure, things can get interesting, so I want to ask for advice before I move.  Thank you!

 

Jan  7 06:10:58 WhiteNAS kernel: ata7: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
Jan  7 06:10:58 WhiteNAS kernel: ata7.00: configured for UDMA/133
Jan  7 06:10:58 WhiteNAS kernel: ata7: EH complete
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557471976
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557471984
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557471992
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472000
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472008
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472016
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472024
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472032
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472040
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472048
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472056
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472064
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472072
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472080
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472088
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472096
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472104
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472112
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472120
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472128
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472136
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472144
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472152
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472160
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472168
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472176
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472184
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472192
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472200
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472208
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472216
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 read error, sector=557472224
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557471976
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557471984
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557471992
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472000
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472008
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472016
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472024
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472032
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472040
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472048
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472056
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472064
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472072
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472080
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472088
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472096
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472104
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472112
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472120
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472128
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472136
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472144
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472152
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472160
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472168
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472176
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472184
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472192
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472200
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472208
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472216
Jan  7 06:28:47 WhiteNAS kernel: md: disk5 write error, sector=557472224
Jan  7 06:29:01 WhiteNAS  sSMTP[2326]: Creating SSL connection to host
Jan  7 06:29:01 WhiteNAS  sSMTP[2326]: SSL connection using TLS_AES_256_GCM_SHA384

 

whitenas-diagnostics-20230107-0942.zip

SMART look OK, very strange that there are no controller errors though, ATA7 issues logged a few minutes earlier are form a different disk and controller.

 

Try swapping that disk to the onboard SATA and see if it happens again, then and if the emulated disk is mounting you can rebuild on top.

I followed the steps of rebooting the server, checking the SMART reports, and rebuilding on the drive found here:  https://wiki.unraid.net/Manual/Storage_Management#Rebuilding_a_drive_onto_itself

 

Everything seems to be working alright. No issues in the rebuild.  Everything working fine.

 

Looks like it was just a read hiccup...