gmirror error: component ad6 (device gm0) broken, skipping

I

itchibahn

FreeBSD 7.1 has been working well for past 6 months on all new hardware, and suddent gmirror broke. Do I have a defective drive?

Rebooting causes same errors.
Code: 
Sep 18 14:38:57 virtual kernel: ad4: 476938MB <Seagate ST3500320AS SD15> at ata2-master SATA150
Sep 18 14:38:57 virtual kernel: ad6: 476938MB <Seagate ST3500320AS SD15> at ata3-master SATA150
Sep 18 14:38:57 virtual kernel: GEOM_MIRROR: Component ad6 (device gm0) broken, skipping.
Sep 18 14:38:57 virtual kernel: GEOM_MIRROR: Device mirror/gm0 launched (1/2).

[root@virtual /var/log]# gmirror status
      Name    Status  Components
mirror/gm0  DEGRADED  ad4

[root@virtual /var/log]# gmirror list
Geom name: gm0
State: DEGRADED
Components: 2
Balance: load
Slice: 4096
Flags: NONE
GenID: 1
SyncID: 1
ID: 1541555337
Providers:
1. Name: mirror/gm0
   Mediasize: 500106779648 (466G)
   Sectorsize: 512
   Mode: r5w5e6
Consumers:
1. Name: ad4
   Mediasize: 500106780160 (466G)
   Sectorsize: 512
   Mode: r1w1e1
   State: ACTIVE
   Priority: 0
   Flags: DIRTY
   GenID: 1
   SyncID: 1
   ID: 2576767378

[root@virtual /var/log]# gmirror deactivate -v gm0 ad6
gmirror: No such provider: ad6.
 
There were some issues with the firmware(SD15) with some Seagate hdd's in the past.
Check the Seagate Website for further information.
 
I took your advice and flashed latest SD1A to the drive AD6, but having exact same error. No changes is noticeable. I was hoping to flash AD6 and once two drive were in sync, then I was going to flash AD4. I took ad6 out and hooked it up on another PC and it boots, so I'm reluctant to say it's a bad hard drive.

Code: 
Sep 18 17:38:37 virtual kernel: ad4: 476938MB <Seagate ST3500320AS SD15> at ata2-master SATA150
Sep 18 17:38:37 virtual kernel: ad6: 476938MB <Seagate ST3500320AS SD1A> at ata3-master SATA150
Sep 18 17:38:37 virtual kernel: GEOM_MIRROR: Component ad6 (device gm0) broken, skipping.
 
I took the risk and went ahead flash the ad4 to latest firmware. Luckily didn't loose data.

After reinserting the drive, it's working and synchronizing! I will try that smartmontools as you suggested.

Thanks for fast help!!!
 
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