Goodmorning.
My name's Mauro Ziliani from Parma ITALY.
I use two disk Seagate ST3808110AS with an Sil3114 SATA controller.
The first disk is sdb and the second is sdc.
I configured a RAID1 software mirror onto this two disk where sdb1 is
the master disk for RAID.
I often receive the following warning message from the kernel during
synchronization of md0 device
...
RAID1 conf printout:
Dec 11 00:47:00 mercurio kernel: --- wd:1 rd:2
Dec 11 00:47:00 mercurio kernel: disk 0, wo:1, o:1, dev:sdc1
Dec 11 00:47:00 mercurio kernel: disk 1, wo:0, o:1, dev:sdb1
Dec 11 00:47:00 mercurio kernel: md: syncing RAID array md0
Dec 11 00:47:00 mercurio kernel: md: minimum _guaranteed_ reconstruction
speed: 1000 KB/sec/disc.
Dec 11 00:47:00 mercurio kernel: md: using maximum available idle IO
bandwidth (but not more than 200000 KB/sec) for reconstruction.
Dec 11 00:47:00 mercurio kernel: md: using 128k window, over a total of
78148096 blocks.
Dec 11 00:47:27 mercurio kernel: ata1.00: exception Emask 0x0 SAct 0x0
SErr 0x280000 action 0x0
Dec 11 00:47:27 mercurio kernel: ata1.00: (BMDMA stat 0x60)
Dec 11 00:47:27 mercurio kernel: ata1.00: tag 0 cmd 0x25 Emask 0x1 stat
0x51 err 0x4 (device error)
Dec 11 00:47:27 mercurio kernel: ata1: EH complete
Dec 11 00:47:27 mercurio kernel: SCSI device sdb: 156301488 512-byte
hdwr sectors (80026 MB)
Dec 11 00:47:28 mercurio kernel: sdb: Write Protect is off
Dec 11 00:47:28 mercurio kernel: sdb: Mode Sense: 00 3a 00 00
Dec 11 00:47:28 mercurio kernel: SCSI device sdb: drive cache: write back
Dec 11 00:47:49 mercurio kernel: ata1.00: exception Emask 0x0 SAct 0x0
SErr 0x280000 action 0x0
Dec 11 00:47:49 mercurio kernel: ata1.00: (BMDMA stat 0x60)
Dec 11 00:47:49 mercurio kernel: ata1.00: tag 0 cmd 0x25 Emask 0x1 stat
0x51 err 0x4 (device error)
Dec 11 00:47:49 mercurio kernel: ata1: EH complete
Dec 11 00:47:49 mercurio kernel: SCSI device sdb: 156301488 512-byte
hdwr sectors (80026 MB)
Dec 11 00:47:49 mercurio kernel: sdb: Write Protect is off
Dec 11 00:47:49 mercurio kernel: sdb: Mode Sense: 00 3a 00 00
Dec 11 00:47:49 mercurio kernel: SCSI device sdb: drive cache: write back
Dec 11 00:48:13 mercurio kernel: ata1.00: exception Emask 0x0 SAct 0x0
SErr 0x280000 action 0x0
Dec 11 00:48:13 mercurio kernel: ata1.00: (BMDMA stat 0x60)
Dec 11 00:48:13 mercurio kernel: ata1.00: tag 0 cmd 0x25 Emask 0x1 stat
0x51 err 0x4 (device error)
Dec 11 00:48:13 mercurio kernel: ata1: EH complete
Dec 11 00:48:13 mercurio kernel: SCSI device sdb: 156301488 512-byte
hdwr sectors (80026 MB)
Dec 11 00:48:13 mercurio kernel: sdb: Write Protect is off
Dec 11 00:48:13 mercurio kernel: sdb: Mode Sense: 00 3a 00 00
Dec 11 00:48:13 mercurio kernel: SCSI device sdb: drive cache: write back
Dec 11 00:49:00 mercurio kernel: ata1.00: exception Emask 0x0 SAct 0x0
SErr 0x280000 action 0x0
Dec 11 00:49:00 mercurio kernel: ata1.00: (BMDMA stat 0x60)
Dec 11 00:49:00 mercurio kernel: ata1.00: tag 0 cmd 0x25 Emask 0x1 stat
0x51 err 0x4 (device error)
Dec 11 00:49:00 mercurio kernel: ata1: EH complete
Dec 11 00:49:00 mercurio kernel: SCSI device sdb: 156301488 512-byte
hdwr sectors (80026 MB)
Dec 11 00:49:00 mercurio kernel: sdb: Write Protect is off
Dec 11 00:49:01 mercurio kernel: sdb: Mode Sense: 00 3a 00 00
Dec 11 00:49:01 mercurio kernel: SCSI device sdb: drive cache: write back
Dec 11 00:49:23 mercurio kernel: ata1.00: exception Emask 0x0 SAct 0x0
SErr 0x280000 action 0x0
Dec 11 00:49:23 mercurio kernel: ata1.00: (BMDMA stat 0x60)
Dec 11 00:49:23 mercurio kernel: ata1.00: tag 0 cmd 0x25 Emask 0x1 stat
0x51 err 0x4 (device error)
Dec 11 00:49:23 mercurio kernel: ata1: EH complete
Dec 11 00:49:23 mercurio kernel: SCSI device sdb: 156301488 512-byte
hdwr sectors (80026 MB)
Dec 11 00:49:23 mercurio kernel: sdb: Write Protect is off
Dec 11 00:49:23 mercurio kernel: sdb: Mode Sense: 00 3a 00 00
Dec 11 00:49:23 mercurio kernel: SCSI device sdb: drive cache: write back
Dec 11 00:52:01 mercurio kernel: ata1.00: exception Emask 0x0 SAct 0x0
SErr 0x280000 action 0x0
Dec 11 00:52:01 mercurio kernel: ata1.00: (BMDMA stat 0x60)
Dec 11 00:52:01 mercurio kernel: ata1.00: tag 0 cmd 0x25 Emask 0x1 stat
0x51 err 0x4 (device error)
Dec 11 00:52:01 mercurio kernel: ata1: EH complete
Dec 11 00:52:01 mercurio kernel: SCSI device sdb: 156301488 512-byte
hdwr sectors (80026 MB)
Dec 11 00:52:01 mercurio kernel: sdb: Write Protect is off
Dec 11 00:52:01 mercurio kernel: sdb: Mode Sense: 00 3a 00 00
Dec 11 00:52:01 mercurio kernel: SCSI device sdb: drive cache: write back
Dec 11 00:52:12 mercurio kernel: ata1.00: exception Emask 0x0 SAct 0x0
SErr 0x280000 action 0x0
Dec 11 00:52:12 mercurio kernel: ata1.00: (BMDMA stat 0x60)
Dec 11 00:52:12 mercurio kernel: ata1.00: tag 0 cmd 0xc8 Emask 0x1 stat
0x51 err 0x4 (device error)
Dec 11 00:52:12 mercurio kernel: ata1: EH complete
Dec 11 00:52:12 mercurio kernel: SCSI device sdb: 156301488 512-byte
hdwr sectors (80026 MB)
Dec 11 00:52:12 mercurio kernel: sdb: Write Protect is off
Dec 11 00:52:12 mercurio kernel: sdb: Mode Sense: 00 3a 00 00
Dec 11 00:52:12 mercurio kernel: SCSI device sdb: drive cache: write back
Dec 11 00:52:17 mercurio kernel: ata1.00: exception Emask 0x0 SAct 0x0
SErr 0x280000 action 0x0
Dec 11 00:52:17 mercurio kernel: ata1.00: (BMDMA stat 0x60)
Dec 11 00:52:17 mercurio kernel: ata1.00: tag 0 cmd 0xc8 Emask 0x1 stat
0x51 err 0x4 (device error)
Dec 11 00:52:17 mercurio kernel: ata1: EH complete
Dec 11 00:52:17 mercurio kernel: SCSI device sdb: 156301488 512-byte
hdwr sectors (80026 MB)
Dec 11 00:52:17 mercurio kernel: sdb: Write Protect is off
Dec 11 00:52:17 mercurio kernel: sdb: Mode Sense: 00 3a 00 00
Dec 11 00:52:17 mercurio kernel: SCSI device sdb: drive cache: write back
Dec 11 00:52:24 mercurio kernel: ata1.00: exception Emask 0x0 SAct 0x0
SErr 0x280000 action 0x0
Dec 11 00:52:24 mercurio kernel: ata1.00: (BMDMA stat 0x60)
Dec 11 00:52:24 mercurio kernel: ata1.00: tag 0 cmd 0x25 Emask 0x1 stat
0x51 err 0x4 (device error)
Dec 11 00:52:24 mercurio kernel: ata1: EH complete
Dec 11 00:52:24 mercurio kernel: SCSI device sdb: 156301488 512-byte
hdwr sectors (80026 MB)
Dec 11 00:52:24 mercurio kernel: sdb: Write Protect is off
Dec 11 00:52:24 mercurio kernel: sdb: Mode Sense: 00 3a 00 00
Dec 11 00:52:24 mercurio kernel: SCSI device sdb: drive cache: write back
Dec 11 00:52:25 mercurio kernel: ata1.00: exception Emask 0x0 SAct 0x0
SErr 0x280000 action 0x0
Dec 11 00:52:25 mercurio kernel: ata1.00: (BMDMA stat 0x60)
Dec 11 00:52:25 mercurio kernel: ata1.00: tag 0 cmd 0xc8 Emask 0x1 stat
0x51 err 0x4 (device error)
Dec 11 00:52:25 mercurio kernel: ata1: EH complete
Dec 11 00:52:25 mercurio kernel: SCSI device sdb: 156301488 512-byte
hdwr sectors (80026 MB)
Dec 11 00:52:25 mercurio kernel: sdb: Write Protect is off
Dec 11 00:52:25 mercurio kernel: sdb: Mode Sense: 00 3a 00 00
Dec 11 00:52:25 mercurio kernel: SCSI device sdb: drive cache: write back
Dec 11 00:52:55 mercurio kernel: ata1.00: limiting speed to UDMA/66
Dec 11 00:52:55 mercurio kernel: ata1.00: exception Emask 0x0 SAct 0x0
SErr 0x280000 action 0x2
Dec 11 00:52:55 mercurio kernel: ata1.00: (BMDMA stat 0x60)
Dec 11 00:52:56 mercurio kernel: ata1.00: tag 0 cmd 0xc8 Emask 0x1 stat
0x51 err 0x4 (device error)
Dec 11 00:52:56 mercurio kernel: ata1: soft resetting port
Dec 11 00:52:56 mercurio kernel: ata1: SATA link up 1.5 Gbps (SStatus
113 SControl 310)
Dec 11 00:52:56 mercurio kernel: ata1.00: configured for UDMA/66
Dec 11 00:52:56 mercurio kernel: ata1: EH complete
Dec 11 00:52:56 mercurio kernel: SCSI device sdb: 156301488 512-byte
hdwr sectors (80026 MB)
Dec 11 00:52:56 mercurio kernel: sdb: Write Protect is off
Dec 11 00:52:56 mercurio kernel: sdb: Mode Sense: 00 3a 00 00
Dec 11 00:52:56 mercurio kernel: SCSI device sdb: drive cache: write back
Dec 11 00:53:48 mercurio kernel: ata1.00: limiting speed to UDMA/44
Dec 11 00:53:48 mercurio kernel: ata1.00: exception Emask 0x0 SAct 0x0
SErr 0x280000 action 0x2
Dec 11 00:53:48 mercurio kernel: ata1.00: (BMDMA stat 0x60)
Dec 11 00:53:48 mercurio kernel: ata1.00: tag 0 cmd 0x25 Emask 0x1 stat
0x51 err 0x4 (device error)
Dec 11 00:53:49 mercurio kernel: ata1: soft resetting port
Dec 11 00:53:49 mercurio kernel: ata1: SATA link up 1.5 Gbps (SStatus
113 SControl 310)
Dec 11 00:53:49 mercurio kernel: ata1.00: configured for UDMA/44
Dec 11 00:53:49 mercurio kernel: ata1: EH complete
Dec 11 00:53:49 mercurio kernel: SCSI device sdb: 156301488 512-byte
hdwr sectors (80026 MB)
Dec 11 00:53:49 mercurio kernel: sdb: Write Protect is off
Dec 11 00:53:49 mercurio kernel: sdb: Mode Sense: 00 3a 00 00
Dec 11 00:53:49 mercurio kernel: SCSI device sdb: drive cache: write back
Dec 11 00:54:05 mercurio kernel: ata1.00: limiting speed to UDMA/33
Dec 11 00:54:05 mercurio kernel: ata1.00: exception Emask 0x0 SAct 0x0
SErr 0x280000 action 0x2
Dec 11 00:54:05 mercurio kernel: ata1.00: (BMDMA stat 0x60)
Dec 11 00:54:05 mercurio kernel: ata1.00: tag 0 cmd 0xc8 Emask 0x1 stat
0x51 err 0x4 (device error)
Dec 11 00:54:05 mercurio kernel: ata1: soft resetting port
Dec 11 00:54:06 mercurio kernel: ata1: SATA link up 1.5 Gbps (SStatus
113 SControl 310)
Dec 11 00:54:06 mercurio kernel: ata1.00: configured for UDMA/33
Dec 11 00:54:06 mercurio kernel: ata1: EH complete
Dec 11 00:54:06 mercurio kernel: SCSI device sdb: 156301488 512-byte
hdwr sectors (80026 MB)
Dec 11 00:54:06 mercurio kernel: sdb: Write Protect is off
Dec 11 00:54:06 mercurio kernel: sdb: Mode Sense: 00 3a 00 00
Dec 11 00:54:06 mercurio kernel: SCSI device sdb: drive cache: write back
Dec 11 00:54:13 mercurio kernel: ata1.00: limiting speed to UDMA/25
Dec 11 00:54:13 mercurio kernel: ata1.00: exception Emask 0x0 SAct 0x0
SErr 0x200000 action 0x2
Dec 11 00:54:13 mercurio kernel: ata1.00: (BMDMA stat 0x60)
Dec 11 00:54:13 mercurio kernel: ata1.00: tag 0 cmd 0xc8 Emask 0x1 stat
0x51 err 0x4 (device error)
Dec 11 00:54:13 mercurio kernel: ata1: soft resetting port
Dec 11 00:54:13 mercurio kernel: ata1: SATA link up 1.5 Gbps (SStatus
113 SControl 310)
Dec 11 00:54:13 mercurio kernel: ata1.00: configured for UDMA/25
Dec 11 00:54:13 mercurio kernel: ata1: EH complete
Dec 11 00:54:13 mercurio kernel: SCSI device sdb: 156301488 512-byte
hdwr sectors (80026 MB)
Dec 11 00:54:14 mercurio kernel: sdb: Write Protect is off
Dec 11 00:54:14 mercurio kernel: sdb: Mode Sense: 00 3a 00 00
Dec 11 00:54:14 mercurio kernel: SCSI device sdb: drive cache: write back
Dec 11 00:54:14 mercurio kernel: ata1.00: limiting speed to UDMA/16
Dec 11 00:54:14 mercurio kernel: ata1.00: exception Emask 0x0 SAct 0x0
SErr 0x280000 action 0x2
Dec 11 00:54:14 mercurio kernel: ata1.00: (BMDMA stat 0x60)
Dec 11 00:54:14 mercurio kernel: ata1.00: tag 0 cmd 0x25 Emask 0x1 stat
0x51 err 0x4 (device error)
Dec 11 00:54:15 mercurio kernel: ata1: soft resetting port
Dec 11 00:54:15 mercurio kernel: ata1: SATA link up 1.5 Gbps (SStatus
113 SControl 310)
Dec 11 00:54:15 mercurio kernel: ata1.00: configured for UDMA/16
Dec 11 00:54:15 mercurio kernel: ata1: EH complete
Dec 11 00:54:15 mercurio kernel: SCSI device sdb: 156301488 512-byte
hdwr sectors (80026 MB)
Dec 11 00:54:15 mercurio kernel: sdb: Write Protect is off
Dec 11 00:54:15 mercurio kernel: sdb: Mode Sense: 00 3a 00 00
Dec 11 00:54:15 mercurio kernel: SCSI device sdb: drive cache: write back
Dec 11 00:54:34 mercurio kernel: ata1.00: limiting speed to PIO4
Dec 11 00:54:34 mercurio kernel: ata1.00: exception Emask 0x0 SAct 0x0
SErr 0x280000 action 0x2
Dec 11 00:54:34 mercurio kernel: ata1.00: (BMDMA stat 0x60)
Dec 11 00:54:34 mercurio kernel: ata1.00: tag 0 cmd 0x25 Emask 0x1 stat
0x51 err 0x4 (device error)
Dec 11 00:54:34 mercurio kernel: ata1: soft resetting port
Dec 11 00:54:34 mercurio kernel: ata1: SATA link up 1.5 Gbps (SStatus
113 SControl 310)
Dec 11 00:54:34 mercurio kernel: ata1.00: configured for PIO4
Dec 11 00:54:35 mercurio kernel: ata1: EH complete
Dec 11 00:54:35 mercurio kernel: SCSI device sdb: 156301488 512-byte
hdwr sectors (80026 MB)
Dec 11 00:54:35 mercurio kernel: sdb: Write Protect is off
Dec 11 00:54:36 mercurio kernel: sdb: Mode Sense: 00 3a 00 00
Dec 11 00:54:36 mercurio kernel: SCSI device sdb: drive cache: write back
Dec 11 00:59:03 mercurio kernel: raid1: Disk failure on sdc1, disabling
device.
Dec 11 00:59:03 mercurio kernel: ^IOperation continuing on 1 devices
Dec 11 00:59:04 mercurio kernel: md: md0: sync done.
Dec 11 00:59:04 mercurio kernel: RAID1 conf printout:
Dec 11 00:59:04 mercurio kernel: --- wd:1 rd:2
Dec 11 00:59:04 mercurio kernel: disk 0, wo:1, o:0, dev:sdc1
Dec 11 00:59:04 mercurio kernel: disk 1, wo:0, o:1, dev:sdb1
Dec 11 00:59:04 mercurio kernel: RAID1 conf printout:
Dec 11 00:59:04 mercurio kernel: --- wd:1 rd:2
Dec 11 00:59:04 mercurio kernel: disk 1, wo:0, o:1, dev:sdb1
....
Why this happens?
I control the disk with PowerMax 4.23 and the disk works fine.
All test are ok.
Is it better to make the RAID1 throught Sill3114 BIOS or throught
software md?
Thanks a lot in advance.
Best regard
Mauro Ziliani
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