> -----Original Message----- > From: arch-general [mailto:arch-general-bounces@xxxxxxxxxxxxx] On Behalf > Of niya levi via arch-general > Sent: Thursday, January 12, 2017 9:22 PM > To: arch-general@xxxxxxxxxxxxx > Cc: niya levi <niyalevi@xxxxxxxxx> > Subject: btrfs raid 10 fileserver with ata errors > > hi everyone > i have a fileserver with 6 1tb disks > i get the following errors repeated constantly > > ---------------------------------------------------------------------------------------------- > -------- > ata17.00 exception Emask 0x0 Sact 0x0 SErr 0x0 action 0x6 frozen > failed command: READ DMA > cmd c8/00:30: tag 14 dma 65536 in > res 40/00:ff:00 Emask 0x4 (timeout) > status {DRDY} > > ---------------------------------------------------------------------------------------------- > ------------ > > after some googling it's been suggested that it's either a hard drive, > the sata controller or the sata cables. > how do i go about diagnosing and fixing the problem, > any suggestions or guidance would be appreciated. > shadrock I've had this problem before. IIRC, you can match up the ata17.00 with what drive it's talking about by looking at your kernel boot messages. The first thing I would do is switch out the SATA cable and see if the problem persists. If that doesn't work, run a scan of the drive using the manufacturers scan program.