SATA hot plug HDD

[russian]

Hi.

Need help.

I've got 6 SATA on motherboard. Five of them (#1..#5) are permanent HDD. But SATA6 connected to sata internal docking station ANTEC

Is it possible to use this docking station to make quick connection of SATA HDD to my NAS ?

When I insert a HDD into docking there are something strange happens. I cannot find a way to mount this drive, and some of my permanent HDD do something strange, it look like they change their dev names.

Here is my dmesg | grep ada before I insert HDD into docking :

Code: Select all

ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
ada0: <WDC WD20EARS-00MVWB0 51.0AB51> ATA-8 SATA 2.x device
ada0: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada0: Command Queueing enabled
ada0: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C)
ada0: Previously was known as ad4
ada1 at ahcich1 bus 0 scbus1 target 0 lun 0
ada1: <WDC WD20EARS-00MVWB0 51.0AB51> ATA-8 SATA 2.x device
ada1: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada1: Command Queueing enabled
ada1: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C)
ada1: Previously was known as ad6
ada2 at ahcich2 bus 0 scbus2 target 0 lun 0
ada2: <WDC WD10EARS-00Y5B1 80.00A80> ATA-8 SATA 2.x device
ada2: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada2: Command Queueing enabled
ada2: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C)
ada2: Previously was known as ad8
ada3 at ahcich3 bus 0 scbus3 target 0 lun 0
ada3: <WDC WD10EARS-00Y5B1 80.00A80> ATA-8 SATA 2.x device
ada3: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada3: Command Queueing enabled
ada3: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C)
ada3: Previously was known as ad10
ada4 at ahcich4 bus 0 scbus4 target 0 lun 0
ada4: <WDC WD10EARS-00Y5B1 80.00A80> ATA-8 SATA 2.x device
ada4: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada4: Command Queueing enabled
ada4: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C)
ada4: Previously was known as ad12

here is two string I ask u to remember:

ada1: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C)
ada4: <WDC WD10EARS-00Y5B1 80.00A80> ATA-8 SATA 2.x device

And camcontrol devlist listing:

Code: Select all

<WDC WD20EARS-00MVWB0 51.0AB51>    at scbus0 target 0 lun 0 (ada0,pass0)
<WDC WD20EARS-00MVWB0 51.0AB51>    at scbus1 target 0 lun 0 (ada1,pass1)
<WDC WD10EARS-00Y5B1 80.00A80>     at scbus2 target 0 lun 0 (ada2,pass2)
<WDC WD10EARS-00Y5B1 80.00A80>     at scbus3 target 0 lun 0 (ada3,pass3)
<WDC WD10EARS-00Y5B1 80.00A80>     at scbus4 target 0 lun 0 (ada4,pass4)
<JetFlash Transcend 16GB 1100>     at scbus6 target 0 lun 0 (da0,pass5)

Now, let's insert SATA HDD into docking, and look what dmesg says:

Code: Select all

(ada1:ahcich1:0:0:0): lost device
(ada1:ahcich1:0:0:0): removing device entry
(ada4:ahcich4:0:0:0): lost device
(ada4:ahcich4:0:0:0): removing device entry
ada1 at ahcich4 bus 0 scbus4 target 0 lun 0
ada1: <WDC WD10EARS-00Y5B1 80.00A80> ATA-8 SATA 2.x device
ada1: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada1: Command Queueing enabled
ada1: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C)
ada1: Previously was known as ad12
Device 50279396c0866572 went missing before all of the data could be written to it; expect data loss.
ada4 at ahcich1 bus 0 scbus1 target 0 lun 0
ada4: <WDC WD20EARS-00MVWB0 51.0AB51> ATA-8 SATA 2.x device
ada4: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada4: Command Queueing enabled
ada4: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C)
ada4: Previously was known as ad6

and camcontrol devlist :

Code: Select all

<WDC WD20EARS-00MVWB0 51.0AB51>    at scbus0 target 0 lun 0 (ada0,pass0)
<WDC WD20EARS-00MVWB0 51.0AB51>    at scbus1 target 0 lun 0 (pass4,ada4)
<WDC WD10EARS-00Y5B1 80.00A80>     at scbus2 target 0 lun 0 (ada2,pass2)
<WDC WD10EARS-00Y5B1 80.00A80>     at scbus3 target 0 lun 0 (ada3,pass3)
<WDC WD10EARS-00Y5B1 80.00A80>     at scbus4 target 0 lun 0 (pass1,ada1)
<JetFlash Transcend 16GB 1100>     at scbus6 target 0 lun 0 (da0,pass5)

You can see, that ada4 and ada1 change to each other.

And I can't find my inserted HDD, there is no ada5 in system or something like.

Could anybody help me?

Thanx!

[Onichan]

Well your SATA controller has to support hot swappable for one thing. Now as far as the ada's changing I don't know enough about BSD as to why that happens. I think during boot is when those ada's are assigned and they aren't necessarily static from what I have been told and drives can become different labels.
It does seem like it is your controller though causing the problem because according to your log when you plug the drive in, two drives suddenly are disconnected which shouldn't happen.

[raulfg3]

http://wiki.nas4free.org/doku.php?id=faq:0087

[russian]

I want to try a labeling, which is suggested by wiki, but my /etc/fstab doesn't contain any information about data disks mounting. There is only root filesystem is mounted. If I made a labels for my HDD UFS (for example, data1, data2... data5) where should I insert these labels?