Lacie 2Big Network vs1 can't add second disk

[grishin]

Hi, fvdw. I nave some problem. Sorry, my english very poor :oops: well understand, but bad speak.
After prepare disk according to the instruction by Uelpenich
viewtopic.php?f=29&t=1522&start=40#p13106 2bigv1 loaded and work perfect with one disk. After add second disk (with NAS switched off) - dont load, no network activity, no web interface. Disable second disk - start normally. OK, another way, add second disk like hot-swap. Network&interface work, putty connect and prepare disk according viewtopic.php?f=7&t=1750#p13417. OK, but after restart not working. Whats wrong? :(
I have 2 stupid device 2big_v1 ,both have same problem.
Details: 2big_v1 directly connect to PC, without router. IP addres like 169.254.*.*, DHCP enable. firmware xfvdw-sl-15-1-2big1-9feb2014

Bets regards from Russia

[fvdw]

in which slot do you put the disk with the firmware and in which slot the second disk ?

If everything is right you should have when looking at the back side of the device the first disk with the firmware in the left hand slot and the second one in the right hand slot.

[grishin]

in which slot do you put the disk with the firmware and in which slot the second disk ?

If everything is right you should have when looking at the back side of the device the first disk with the firmware in the left hand slot and the second one in the right hand slot.

yep, disk1 with firmware in left hand slot, disk2 in right hand. Maybe problem is that I copy file in folder "public" before added second drive?

[fvdw]

no I don't think that using the public folder is the problem.

How did you prepare the second disk ? en what is the position of the switch on the back of the 2big1 regarding raid

[grishin]

en what is the position of the switch on the back of the 2big1 regarding raid

switch in "big" position on the both devices

How did you prepare the second disk ?

Try 3 way:
1. Prepare disk in ubuntu, create partition sdb4, sdb5 etc, format sdb8. Insert in right slot 2big_v1 - NAS not loading. LED blinking, after 1-2 minute shutdown.
2. Insert empty disk (no label, no patition) with NAS switched off, enable NAS - not loading, no network, putty "unable to open connection, host does not exist".
3. Last try - start NAS with one disk with firmware, after loading and start web interface, insert empty second disk. YES, putty connected, fdisk /dev/sdb etc follow instructions. But shit happens, after restart NAS not loading again.

disk1 & disk2 seagate 500Gb

[fvdw]

there is a switch on the back of the 2big1 mentioning "safe 100" and "big"
I do not have a 2big1 but if I remember correctly it should be in "big" mode

[uelpenich]

my 2big1 has the same behaviour.

I'm running the firmware V15.1
The rotary switch is in the "big" position.
The boot disk is in the left hand slot (seen from the rear)

Adding an USB memory stick or an USB external disk works (the detection of the external USB disk takes a long time, be patient)

With the standalone kernel I was able to connect the second disk and to report it in the dmesg command.

The LaCie manuals tell about a nvram containing the RAID configuration.
Some kernel sources maintained by a LaCie person describes the nvram and that it is red by the kernel.

Question to fvdw: does you kernel read and use the nvram?
If yes this may explain some strange behaviour I had seen with my 2big1 with my early tests with a second drive. My 2big1 ended as unusable device. I got it back to life with a factory reset described by Lacie.

Question: the switch position "big" means stripe disks. Is it possible that 2 physical disks are handled as a big one?

It may help to have a look at the output of the dmesg command:

root@2big1:/ # dmesg
Linux version 2.6.39.4 (root@fvdwsl-5big2.local) (gcc version 4.5.4 (GCC) ) #21 PREEMPT Tue Oct 8 21:29:47 GMT+1 2013
CPU: Feroceon [41069260] revision 0 (ARMv5TEJ), cr=a0053177
CPU: VIVT data cache, VIVT instruction cache
Machine: LaCie 2Big Network
Clearing invalid memory bank 0KB@0xffffffff
Clearing invalid memory bank 0KB@0xffffffff
Clearing invalid memory bank 0KB@0xffffffff
Ignoring unrecognised tag 0x00000000
Ignoring unrecognised tag 0x00000000
Ignoring unrecognised tag 0x00000000
Ignoring unrecognised tag 0x41000403
Memory policy: ECC disabled, Data cache writeback
On node 0 totalpages: 16384
free_area_init_node: node 0, pgdat c03c1308, node_mem_map c03d4000
Normal zone: 128 pages used for memmap
Normal zone: 0 pages reserved
Normal zone: 16256 pages, LIFO batch:3
pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
pcpu-alloc: [0] 0
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256
Kernel command line: console=ttyS0,115200 root=/dev/sda7 ro reset=0
PID hash table entries: 256 (order: -2, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 64MB = 64MB total
Memory: 61016k/61016k available, 4520k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
DMA : 0xffc00000 - 0xffe00000 ( 2 MB)
vmalloc : 0xc4800000 - 0xfd800000 ( 912 MB)
lowmem : 0xc0000000 - 0xc4000000 ( 64 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.init : 0xc0008000 - 0xc0028000 ( 128 kB)
.text : 0xc0028000 - 0xc03a6000 (3576 kB)
.data : 0xc03a6000 - 0xc03c19e0 ( 111 kB)
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Preemptable hierarchical RCU implementation.
RCU-based detection of stalled CPUs is disabled.
Verbose stalled-CPUs detection is disabled.
NR_IRQS:64
sched_clock: 32 bits at 166MHz, resolution 5ns, wraps every 25769ms
Calibrating delay loop... 265.42 BogoMIPS (lpj=1327104)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
NET: Registered protocol family 16
Orion ID: MV88F5182-A2. TCLK=166666667.
net2big: Flash writing is not yet supported.
bio: create slab <bio-0> at 0
SCSI subsystem initialized
libata version 3.00 loaded.
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
Switching to clocksource orion_clocksource
Switched to NOHz mode on CPU #0
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
PCI: CLS 0 bytes, default 32
NetWinder Floating Point Emulator V0.97 (double precision)
VFS: Disk quotas dquot_6.5.2
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
msgmni has been set to 119
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled
serial8250.0: ttyS0 at MMIO 0xf1012000 (irq = 3) is a 16550A
console [ttyS0] enabled
loop: module loaded
Uniform Multi-Platform E-IDE driver
ide-gd driver 1.18
sata_mv sata_mv.0: version 1.28
sata_mv sata_mv.0: slots 32 ports 2
scsi0 : sata_mv
scsi1 : sata_mv
ata1: SATA max UDMA/133 irq 29
ata2: SATA max UDMA/133 irq 29
mv643xx_eth: MV-643xx 10/100/1000 ethernet driver version 1.4
mv643xx_eth smi: probed
mv643xx_eth_port mv643xx_eth_port.0: eth0: port 0 with MAC address 00:d0:4b:84:39:ef
PPP generic driver version 2.4.2
PPP Deflate Compression module registered
PPP MPPE Compression module registered
NET: Registered protocol family 24
tun: Universal TUN/TAP device driver, 1.6
tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com>
ipddp.c:v0.01 8/28/97 Bradford W. Johnson <johns393@maroon.tc.umn.edu>
ipddp0: Appletalk-IP Encap. mode by Bradford W. Johnson <johns393@maroon.tc.umn.edu>
usbcore: registered new interface driver ipheth
console [netcon0] enabled
netconsole: network logging started
aoe: AoE v47 initialised.
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
orion-ehci orion-ehci.0: Marvell Orion EHCI
orion-ehci orion-ehci.0: new USB bus registered, assigned bus number 1
orion-ehci orion-ehci.0: irq 17, io mem 0xf1050000
orion-ehci orion-ehci.0: USB 2.0 started, EHCI 1.00
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
orion-ehci orion-ehci.1: Marvell Orion EHCI
orion-ehci orion-ehci.1: new USB bus registered, assigned bus number 2
orion-ehci orion-ehci.1: irq 12, io mem 0xf10a0000
orion-ehci orion-ehci.1: USB 2.0 started, EHCI 1.00
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 1 port detected
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
input: gpio-keys as /devices/platform/gpio-keys/input/input0
i2c /dev entries driver
rtc-rs5c372 0-0032: rs5c372b found, 24hr, driver version 0.6
rtc-rs5c372 0-0032: rtc core: registered rtc-rs5c372 as rtc0
at24 0-0050: 1024 byte 24c08 EEPROM, writable, 1 bytes/write
mv_xor_shared mv_xor_shared.0: Marvell shared XOR driver
mv_xor mv_xor.0: Marvell XOR: ( xor cpy )
ata1: SATA link down (SStatus 0 SControl 300)
mv_xor mv_xor.1: Marvell XOR: ( xor fill cpy )
Registered led device: net2big:red:power
Registered led device: net2big:blue:power
Registered led device: net2big:red:sata0
Registered led device: net2big:red:sata1
Netfilter messages via NETLINK v0.30.
nf_conntrack version 0.5.0 (953 buckets, 3812 max)
IPv4 over IPv4 tunneling driver
TCP cubic registered
NET: Registered protocol family 17
NET: Registered protocol family 5
NET: Registered protocol family 37
VFP support v0.3: not present
rtc-rs5c372 0-0032: setting system clock to 2014-02-24 20:45:25 UTC (1393274725)
ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata2.00: ATA-8: ST2000DM001-9YN164, CC4G, max UDMA/133
ata2.00: 3907029168 sectors, multi 0: LBA48 NCQ (depth 31/32)
ata2.00: configured for UDMA/133
scsi 1:0:0:0: Direct-Access ATA ST2000DM001-9YN1 CC4G PQ: 0 ANSI: 5
fvdw1 disk index 0
fvdw2 disk indexfvdw 0
fvdw3 disk indexfvdw 0
fvdw4 disk diskname= sda
sd 1:0:0:0: [sda] 3907029168 512-byte logical blocks: (2.00 TB/1.81 TiB)
sd 1:0:0:0: [sda] 4096-byte physical blocks
sd 1:0:0:0: [sda] Write Protect is off
sd 1:0:0:0: [sda] Mode Sense: 00 3a 00 00
sd 1:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sda: sda1 sda2 sda3 sda4 < sda5 sda6 sda7 sda8 >
sd 1:0:0:0: [sda] Attached SCSI disk
EXT3-fs (sda7): recovery required on readonly filesystem
EXT3-fs (sda7): write access will be enabled during recovery
EXT3-fs: barriers not enabled
EXT3-fs (sda7): recovery complete
kjournald starting. Commit interval 5 seconds
EXT3-fs (sda7): mounted filesystem with ordered data mode
VFS: Mounted root (ext3 filesystem) readonly on device 8:7.
Freeing init memory: 128K
EXT3-fs (sda7): warning: maximal mount count reached, running e2fsck is recommended
EXT3-fs (sda7): using internal journal
EXT3-fs: barriers not enabled
EXT3-fs (sda2): warning: checktime reached, running e2fsck is recommended
kjournald starting. Commit interval 5 seconds
EXT3-fs (sda2): using internal journal
EXT3-fs (sda2): recovery complete
EXT3-fs (sda2): mounted filesystem with ordered data mode
EXT3-fs: barriers not enabled
kjournald starting. Commit interval 5 seconds
EXT3-fs (sda5): using internal journal
EXT3-fs (sda5): recovery complete
EXT3-fs (sda5): mounted filesystem with ordered data mode
Adding 524284k swap on /dev/sda3. Priority:-1 extents:1 across:524284k
NTFS driver 2.1.30 [Flags: R/W MODULE].
fuse init (API version 7.16)
usbcore: registered new interface driver usblp
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
iSCSI Enterprise Target Software - version trunk
iscsi_trgt: Registered io type fileio
iscsi_trgt: Registered io type blockio
iscsi_trgt: Registered io type nullio
Linux video capture interface: v2.00
usbcore: registered new interface driver uvcvideo
USB Video Class driver (v1.0.0)
EXT3-fs: barriers not enabled
kjournald starting. Commit interval 5 seconds
EXT3-fs (sda8): using internal journal
EXT3-fs (sda8): recovery complete
EXT3-fs (sda8): mounted filesystem with ordered data mode
udevd (660): /proc/660/oom_adj is deprecated, please use /proc/660/oom_score_adj instead.
udev: starting version 130
mv643xx_eth_port mv643xx_eth_port.0: eth0: link up, 100 Mb/s, full duplex, flow control disabled
warning: `proftpd' uses 32-bit capabilities (legacy support in use)
root@2big1:/ #

Greetings
Werner

[fvdw]

@uelpenich

Question to fvdw: does you kernel read and use the nvram?
If yes this may explain some strange behavior I had seen with my 2big1 with my early tests with a second drive. My 2big1 ended as unusable device. I got it back to life with a factory reset described by Lacie.

Question: the switch position "big" means stripe disks. Is it possible that 2 physical disks are handled as a big one?

answer to the first question.
nvram is flash memory I assume. No the kernel doesn't use it...but the boot loader (u-boot) may use it. The box is brought to live by this boot loader which is a tiny operation system on its own. I do not know what lacie has put in there and it may do some things dependent on what is in nvram (flash) and the position of the switch.It may also do something with the disk itself or what it finds on the disks. That may explain why it stops booting. The trick is then to find out what is u-boot doing exactly. That will need a study of the source code
The final job of u-boot is loading the kernel and the boot scripts of the firmware but before it does this it might also do other things.


answer to second question.
Yes it is possible by using 'lvm" (logical volume manger) but this is loaded at boot. In our firmware it is not used yet but in the lacie firmware it is present. Its a layer. lvm can also be used to create several "volumes" on one disk.

But it seems to be possible to get it running fvdw-sl with two disk as you have proven

[grishin]

Hello, wizards :)

3. Last try - start NAS with one disk with firmware, after loading and start web interface, insert empty second disk. YES, putty connected, fdisk /dev/sdb etc follow instructions.

second disk connected &
It may help to have a look at the output of the dmesg command (c)

root@nas:/ # dmesg
Linux version 2.6.39.4 (root@fvdwsl-5big2.local) (gcc version 4.5.4 (GCC) ) #21 PREEMPT Tue Oct 8 21:29:47 GMT+1 2013
CPU: Feroceon [41069260] revision 0 (ARMv5TEJ), cr=a0053177
CPU: VIVT data cache, VIVT instruction cache
Machine: LaCie 2Big Network
Clearing invalid memory bank 0KB@0xffffffff
Clearing invalid memory bank 0KB@0xffffffff
Clearing invalid memory bank 0KB@0xffffffff
Ignoring unrecognised tag 0x00000000
Ignoring unrecognised tag 0x00000000
Ignoring unrecognised tag 0x00000000
Ignoring unrecognised tag 0x41000403
Memory policy: ECC disabled, Data cache writeback
On node 0 totalpages: 16384
free_area_init_node: node 0, pgdat c03c1308, node_mem_map c03d4000
Normal zone: 128 pages used for memmap
Normal zone: 0 pages reserved
Normal zone: 16256 pages, LIFO batch:3
pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
pcpu-alloc: [0] 0
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256
Kernel command line: console=ttyS0,115200 root=/dev/sda7 ro reset=0
PID hash table entries: 256 (order: -2, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 64MB = 64MB total
Memory: 61016k/61016k available, 4520k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
DMA : 0xffc00000 - 0xffe00000 ( 2 MB)
vmalloc : 0xc4800000 - 0xfd800000 ( 912 MB)
lowmem : 0xc0000000 - 0xc4000000 ( 64 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.init : 0xc0008000 - 0xc0028000 ( 128 kB)
.text : 0xc0028000 - 0xc03a6000 (3576 kB)
.data : 0xc03a6000 - 0xc03c19e0 ( 111 kB)
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Preemptable hierarchical RCU implementation.
RCU-based detection of stalled CPUs is disabled.
Verbose stalled-CPUs detection is disabled.
NR_IRQS:64
sched_clock: 32 bits at 166MHz, resolution 5ns, wraps every 25769ms
Calibrating delay loop... 265.42 BogoMIPS (lpj=1327104)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
NET: Registered protocol family 16
Orion ID: MV88F5182-A2. TCLK=166666667.
net2big: Flash writing is not yet supported.
bio: create slab <bio-0> at 0
SCSI subsystem initialized
libata version 3.00 loaded.
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
Switching to clocksource orion_clocksource
Switched to NOHz mode on CPU #0
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
PCI: CLS 0 bytes, default 32
NetWinder Floating Point Emulator V0.97 (double precision)
VFS: Disk quotas dquot_6.5.2
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
msgmni has been set to 119
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled
serial8250.0: ttyS0 at MMIO 0xf1012000 (irq = 3) is a 16550A
console [ttyS0] enabled
loop: module loaded
Uniform Multi-Platform E-IDE driver
ide-gd driver 1.18
sata_mv sata_mv.0: version 1.28
sata_mv sata_mv.0: slots 32 ports 2
scsi0 : sata_mv
scsi1 : sata_mv
ata1: SATA max UDMA/133 irq 29
ata2: SATA max UDMA/133 irq 29
mv643xx_eth: MV-643xx 10/100/1000 ethernet driver version 1.4
mv643xx_eth smi: probed
mv643xx_eth_port mv643xx_eth_port.0: eth0: port 0 with MAC address 00:d0:4b:84:5c:4f
PPP generic driver version 2.4.2
PPP Deflate Compression module registered
PPP MPPE Compression module registered
NET: Registered protocol family 24
tun: Universal TUN/TAP device driver, 1.6
tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com>
ipddp.c:v0.01 8/28/97 Bradford W. Johnson <johns393@maroon.tc.umn.edu>
ipddp0: Appletalk-IP Encap. mode by Bradford W. Johnson <johns393@maroon.tc.umn.edu>
usbcore: registered new interface driver ipheth
console [netcon0] enabled
netconsole: network logging started
aoe: AoE v47 initialised.
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
orion-ehci orion-ehci.0: Marvell Orion EHCI
orion-ehci orion-ehci.0: new USB bus registered, assigned bus number 1
orion-ehci orion-ehci.0: irq 17, io mem 0xf1050000
orion-ehci orion-ehci.0: USB 2.0 started, EHCI 1.00
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
orion-ehci orion-ehci.1: Marvell Orion EHCI
orion-ehci orion-ehci.1: new USB bus registered, assigned bus number 2
orion-ehci orion-ehci.1: irq 12, io mem 0xf10a0000
orion-ehci orion-ehci.1: USB 2.0 started, EHCI 1.00
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 1 port detected
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
input: gpio-keys as /devices/platform/gpio-keys/input/input0
i2c /dev entries driver
rtc-rs5c372 0-0032: rs5c372b found, 24hr, driver version 0.6
rtc-rs5c372 0-0032: rtc core: registered rtc-rs5c372 as rtc0
at24 0-0050: 1024 byte 24c08 EEPROM, writable, 1 bytes/write
mv_xor_shared mv_xor_shared.0: Marvell shared XOR driver
mv_xor mv_xor.0: Marvell XOR: ( xor cpy )
ata1: SATA link down (SStatus 0 SControl 300)
mv_xor mv_xor.1: Marvell XOR: ( xor fill cpy )
Registered led device: net2big:red:power
Registered led device: net2big:blue:power
Registered led device: net2big:red:sata0
Registered led device: net2big:red:sata1
Netfilter messages via NETLINK v0.30.
nf_conntrack version 0.5.0 (953 buckets, 3812 max)
IPv4 over IPv4 tunneling driver
TCP cubic registered
NET: Registered protocol family 17
NET: Registered protocol family 5
NET: Registered protocol family 37
VFP support v0.3: not present
rtc-rs5c372 0-0032: setting system clock to 2014-03-15 20:00:48 UTC (1394913648)
ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata2.00: ATA-8: ST3500320AS, SD1A, max UDMA/133
ata2.00: 976773168 sectors, multi 0: LBA48 NCQ (depth 31/32)
ata2.00: configured for UDMA/133
scsi 1:0:0:0: Direct-Access ATA ST3500320AS SD1A PQ: 0 ANSI: 5
fvdw1 disk index 0
fvdw2 disk indexfvdw 0
fvdw3 disk indexfvdw 0
fvdw4 disk diskname= sda
sd 1:0:0:0: [sda] 976773168 512-byte logical blocks: (500 GB/465 GiB)
sd 1:0:0:0: [sda] Write Protect is off
sd 1:0:0:0: [sda] Mode Sense: 00 3a 00 00
sd 1:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sda: sda1 sda2 sda3 sda4 < sda5 sda6 sda7 sda8 >
sd 1:0:0:0: [sda] Attached SCSI disk
EXT3-fs: barriers not enabled
EXT3-fs (sda7): mounted filesystem with ordered data mode
VFS: Mounted root (ext3 filesystem) readonly on device 8:7.
kjournald starting. Commit interval 5 seconds
Freeing init memory: 128K
EXT3-fs (sda7): warning: maximal mount count reached, running e2fsck is recommended
EXT3-fs (sda7): using internal journal
EXT3-fs: barriers not enabled
EXT3-fs (sda1): warning: checktime reached, running e2fsck is recommended
kjournald starting. Commit interval 5 seconds
EXT3-fs (sda1): using internal journal
EXT3-fs (sda1): recovery complete
EXT3-fs (sda1): mounted filesystem with ordered data mode
EXT3-fs: barriers not enabled
kjournald starting. Commit interval 5 seconds
EXT3-fs (sda5): using internal journal
EXT3-fs (sda5): recovery complete
EXT3-fs (sda5): mounted filesystem with ordered data mode
Adding 257036k swap on /dev/sda3. Priority:-1 extents:1 across:257036k
NTFS driver 2.1.30 [Flags: R/W MODULE].
fuse init (API version 7.16)
usbcore: registered new interface driver usblp
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
iSCSI Enterprise Target Software - version trunk
iscsi_trgt: Registered io type fileio
iscsi_trgt: Registered io type blockio
iscsi_trgt: Registered io type nullio
Linux video capture interface: v2.00
usbcore: registered new interface driver uvcvideo
USB Video Class driver (v1.0.0)
udevd (630): /proc/630/oom_adj is deprecated, please use /proc/630/oom_score_adj instead.
udev: starting version 130
EXT3-fs: barriers not enabled
kjournald starting. Commit interval 5 seconds
EXT3-fs (sda8): using internal journal
EXT3-fs (sda8): recovery complete
EXT3-fs (sda8): mounted filesystem with ordered data mode
mv643xx_eth_port mv643xx_eth_port.0: eth0: link up, 1000 Mb/s, full duplex, flow control disabled
ata1: exception Emask 0x10 SAct 0x0 SErr 0x4010000 action 0xe frozen
ata1: edma_err_cause=00000010 pp_flags=00000000, dev connect
ata1: SError: { PHYRdyChg DevExch }
ata1: hard resetting link
ata1: link is slow to respond, please be patient (ready=0)
ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata1.00: ATA-8: ST3500320AS, SD1A, max UDMA/133
ata1.00: 976773168 sectors, multi 0: LBA48 NCQ (depth 31/32)
ata1.00: configured for UDMA/133
ata1: EH complete
scsi 0:0:0:0: Direct-Access ATA ST3500320AS SD1A PQ: 0 ANSI: 5
fvdw1 disk index 1
fvdw2 disk indexfvdw 1
fvdw3 disk indexfvdw 1
fvdw4 disk diskname= sdb
sd 0:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB)
sd 0:0:0:0: [sdb] Write Protect is off
sd 0:0:0:0: [sdb] Mode Sense: 00 3a 00 00
sd 0:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sdb: sdb4 < sdb5 sdb6 sdb7 sdb8 >
sd 0:0:0:0: [sdb] Attached SCSI disk

[uelpenich]

I did a similar test as grishin: assuming that disks are hotpluggable in a NAS prepared for RAID I pushed in a second disk into the right hand slot. But my disk was an empty one without any partition on it (I deleted all partions with gparted, it has still an empty patition table) I got the same result as grishin.

Then I tried to reboot the device: same result as grishin. The 2big1 didn't boot at all. After removing the second disk everything went well again.

On http://git.lacie-nas.org/?p=nas-tools.git;a=blob;f=sd_alias/README;hb=HEAD I found the description of a little nice tool to overcome the change of nodenames when inserting new disks. I understand the need for such a tool in a way that the boot loader does some things we don't understand today.