GEOM_MIRROR Errors

[Nuno Martinho]

I have a RAID 1 that was working fine without errors reported. The RAID was not on Degraded state.  

When i shutdown Freenas, GEOM_MIRROR start to report errors during shutdown.  

I’ve checked SMART and there are no problems with the disks.  

   

During shutdown:  

Sep 10 07:33:15                kernel: ad6: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=976773167  

Sep 10 07:33:20                kernel: ad6: TIMEOUT - WRITE_DMA48 retrying (0 retries left) LBA=976773167  

Sep 10 07:33:25                kernel: ad6: FAILURE - WRITE_DMA48 timed out LBA=976773167  

Sep 10 07:33:25                kernel: GEOM_MIRROR: Cannot write metadata on ad6 (device=raid1, error=5).  

Sep 10 07:33:25                kernel: GEOM_MIRROR: Cannot update metadata on disk ad6 (error=5).  

Sep 10 07:33:32                kernel: ad7: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=976773167  

   

During startup:  

Sep 10 07:47:47                kernel: ad6: 476940MB <WDC WD5000AAKB-00YSA0 12.01C02> at ata3-master UDMA100  

Sep 10 07:47:47                kernel: ad7: 476940MB <WDC WD5000AAKB-00YSA0 12.01C02> at ata3-slave UDMA100  

Sep 10 07:47:47                kernel: GEOM_MIRROR: Device raid1 created (id=3401427605).  

Sep 10 07:47:47                kernel: GEOM_MIRROR: Device raid1: provider ad7 detected.  

Sep 10 07:47:47                kernel: GEOM_MIRROR: Device raid1: provider ad6 detected.  

Sep 10 07:47:47                kernel: GEOM_MIRROR: Component ad6 (device raid1) broken, skipping.  

Sep 10 07:47:47                kernel: GEOM_MIRROR: Device raid1: provider ad7 activated.  

Sep 10 07:47:47                kernel: GEOM_MIRROR: Device raid1: provider mirror/raid1 launched.  

   

If i try to insert disk “ad6” in the mirror:  

Sep 10 07:49:40                kernel: GEOM_MIRROR: Component ad6 (device raid1) broken, skipping.  

Sep 10 07:49:40                kernel: GEOM_MIRROR: Cannot add disk ad6 to raid1 (error=22).  

   

The only solution was rebuild the mirror.  

   

Why this errors?  

   

   

Best Regards,  

Martinho.