RAID5 with N-2 HDD...?

[tomaceli]

Hi All!

Here is a big problem for me, critical data for sure...

I originally configured my RAID5 with 5 HDD as I was still waiting for the sixth one in replacement of a defective first shipment (slot 3).
Was urgently needed space...

Once received the 6th HDD, I launched the RAID expansion capacity but one of the original HDD failed during the process (slot 5, a few bad blocks).
As for that it created a read/write error on the new HDD (slot 3) and slot 5 is now marked as normal SMART status (orange).
btw total space is still 10.8 To...?

I tried a lot of things already but all tried rebuilds processed finish to fail as above at 93.5% of rebuilding.
Error [RAID 5 Disk Volume: Drive 1 2 4 5 6 3] Error occurred while accessing Drive 5.

Currently shown as:
- "In degraded mode Read only, Failed Drive(s): 5"
[RAID 5 Disk Volume: Drive 1 2 4 5 6 3]

Code: Select all

[~] # mdadm -D /dev/md0
/dev/md0:
        Version : 01.00.03
  Creation Time : Tue Jan 31 18:39:05 2012
     Raid Level : raid5
     Array Size : 14643487680 (13965.12 GiB 14994.93 GB)
  Used Dev Size : 2928697536 (2793.02 GiB 2998.99 GB)
   Raid Devices : 6
  Total Devices : 5
Preferred Minor : 0
    Persistence : Superblock is persistent

    Update Time : Thu Sep  6 10:14:31 2012
          State : clean, degraded
 Active Devices : 5
Working Devices : 5
 Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 64K

           Name : 0
           UUID : 5fd21cbc:55b01bba:51dfb33b:8b04586e
         Events : 3045714

    Number   Major   Minor   RaidDevice State
       0       8        3        0      active sync   /dev/sda3
       1       8       19        1      active sync   /dev/sdb3
       2       8       51        2      active sync   /dev/sdd3
       3       8       67        3      active sync   /dev/sde3
       4       8       83        4      active sync   /dev/sdf3
       5       0        0        5      removed


--> If I pull out the drive 5 I can launch a recover but what could be the result...? And should I keep the drive 3 in his slot..?

Any ideas/comments would be great!
Thanks in advance for your support


PS: F/W is 3.7.3 20120801

[schumaku]

Check the Kernel messages for issues with the HDD #5 (/dev/sde) - use ie. # dmesg or # tail -200 /mnt/HDA_ROOT/.logs/kmsg

COntact QNAP customer support organisatioon please - be aware, this is pure community here, no formal support.

[tomaceli]

Thanks for your quick reply.
Oh yeah, I know this is community here, that's what I'm searching for at first

dmesg:

Code: Select all

055] md: bind<sdb1>
[   17.946710] raid1: raid set md9 active with 5 out of 6 mirrors
[   17.951264] md9: bitmap initialized from disk: read 5/5 pages, set 676 bits
[   17.951374] created bitmap (65 pages) for device md9
[   17.964334] md9: detected capacity change from 0 to 542769152
[   17.968438]  md9: unknown partition table
[   18.999910] kjournald starting.  Commit interval 5 seconds
[   19.067573] EXT3-fs (md9): using internal journal
[   19.067744] EXT3-fs (md9): mounted filesystem with writeback data mode
[   19.231955] md: md13 stopped.
[   19.383408] md: bind<sdd4>
[   19.383727] md: bind<sde4>
[   19.383983] md: bind<sda4>
[   19.384275] md: bind<sdf4>
[   19.384521] md: bind<sdb4>
[   19.386077] raid1: raid set md13 active with 5 out of 6 mirrors
[   19.389908] md13: bitmap initialized from disk: read 4/4 pages, set 95 bits
[   19.390020] created bitmap (57 pages) for device md13
[   19.412207] md13: detected capacity change from 0 to 469893120
[   19.416377]  md13: unknown partition table
[   20.671852] kjournald starting.  Commit interval 5 seconds
[   20.720061] EXT3-fs (md9): using internal journal
[   20.720235] EXT3-fs (md9): mounted filesystem with writeback data mode
[   39.556659] kjournald starting.  Commit interval 5 seconds
[   40.002679] EXT3-fs (md9): using internal journal
[   40.002853] EXT3-fs (md9): mounted filesystem with writeback data mode
[   61.126164] kjournald starting.  Commit interval 5 seconds
[   61.195172] EXT3-fs (md13): using internal journal
[   61.195364] EXT3-fs (md13): mounted filesystem with writeback data mode
[   68.203013] cryptodev: driver 0.9 loaded.
[   68.226302] usbcore: registered new interface driver hiddev
[   68.230632] usbcore: registered new interface driver usbhid
[   68.230763] usbhid: USB HID core driver
[   68.234125] Register ICH/PCH RTC driver.
[   68.239442] iTCO_vendor_support: vendor-support=0
[   68.244303] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.05
[   68.245820] iTCO_wdt: Found a ICH9R TCO device (Version=2, TCOBASE=0x0860)
[   68.248865] iTCO_wdt: initialized. heartbeat=120 sec (nowayout=0)
[   68.256989] usbcore: registered new interface driver usblp
[   68.264052] ufsd: module license 'Commercial product' taints kernel.
[   68.264168] Disabling lock debugging due to kernel taint
[   68.273610] ufsd: driver (8.6, Aug  1 2012 01:44:14, LBD=OFF, delalloc, acl, ioctl, ugm) loaded at ffffffffa00ac000
[   68.273617] NTFS (with native replay) support included
[   68.273620] Hfs+/HfsX support included
[   68.273623] optimized: speed
[   68.273625] Build_for__QNAP_x86-64_2012-02-09_U86_r184988_b10
[   68.273628]
[   68.293414] xhci_hcd 0000:06:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[   68.293584] xhci_hcd 0000:06:00.0: setting latency timer to 64
[   68.293595] xhci_hcd 0000:06:00.0: xHCI Host Controller
[   68.293733] xhci_hcd 0000:06:00.0: new USB bus registered, assigned bus number 9
[   68.294135] xhci_hcd 0000:06:00.0: irq 17, io mem 0xfebfe000
[   68.297429] usb usb9: config 1 interface 0 altsetting 0 endpoint 0x81 has no SuperSpeed companion descriptor
[   68.297983] xHCI xhci_add_endpoint called for root hub
[   68.297991] xHCI xhci_check_bandwidth called for root hub
[   68.298357] hub 9-0:1.0: USB hub found
[   68.298485] hub 9-0:1.0: 4 ports detected
[   68.306283] fnotify: Load file notify kernel module.
[   68.309241] fnotify:   Global_Private_Data_List_Init()
[   68.309416] fnotify:   Launch the fnotify thread: 2254
[   68.309811] fnotify:   The fnotify thread starts...
[   69.377446] usbcore: registered new interface driver snd-usb-audio
[   69.386436] usbcore: registered new interface driver snd-usb-caiaq
[   69.418661] pci 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[   69.418783] pci 0000:00:02.0: setting latency timer to 64
[   69.432571]   alloc irq_desc for 40 on node -1
[   69.432579]   alloc kstat_irqs on node -1
[   69.432594] pci 0000:00:02.0: irq 40 for MSI/MSI-X
[   69.432927] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
[   69.456998] Linux video capture interface: v2.00
[   69.478323] usbcore: registered new interface driver uvcvideo
[   69.478451] USB Video Class driver (v0.1.0)
[   69.622360] 802.1Q VLAN Support v1.8 Ben Greear <greearb@candelatech.com>
[   69.622484] All bugs added by David S. Miller <davem@redhat.com>
[   71.188723] kjournald starting.  Commit interval 5 seconds
[   71.196223] EXT3-fs (md9): using internal journal
[   71.196391] EXT3-fs (md9): mounted filesystem with writeback data mode
[   72.902523] active port 0 :139
[   72.902618] active port 1 :445
[   72.902708] active port 2 :20
[   72.942357] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
[   77.353225] md: bind<sda2>
[   77.354772] raid1: raid set md6 active with 1 out of 1 mirrors
[   77.354920] md6: detected capacity change from 0 to 542769152
[   78.359892]  md6: unknown partition table
[   80.473307] Adding 530040k swap on /dev/md6.  Priority:-1 extents:1 across:530040k
[   85.402176] md: bind<sdb2>
[   85.413073] RAID1 conf printout:
[   85.413192]  --- wd:1 rd:2
[   85.413323]  disk 0, wo:0, o:1, dev:sda2
[   85.413432]  disk 1, wo:1, o:1, dev:sdb2
[   85.413629] md: recovery of RAID array md6
[   85.413739] md: minimum _guaranteed_  speed: 5000 KB/sec/disk.
[   85.413857] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for recovery.
[   85.414079] md: using 128k window, over a total of 530048 blocks.
[   86.282161] md: md0 stopped.
[   86.291618] md: md0 stopped.
[   86.463436] md: bind<sdb3>
[   86.463700] md: bind<sdd3>
[   86.463946] md: bind<sde3>
[   86.464194] md: bind<sdf3>
[   86.464452] md: bind<sda3>
[   86.465865] raid5: device sda3 operational as raid disk 0
[   86.465967] raid5: device sdf3 operational as raid disk 4
[   86.466888] raid5: device sde3 operational as raid disk 3
[   86.466987] raid5: device sdd3 operational as raid disk 2
[   86.467090] raid5: device sdb3 operational as raid disk 1
[   86.480620] raid5: allocated 102176kB for md0
[   86.480841] 0: w=1 pa=0 pr=6 m=1 a=2 r=6 op1=0 op2=0
[   86.480942] 4: w=2 pa=0 pr=6 m=1 a=2 r=6 op1=0 op2=0
[   86.481047] 3: w=3 pa=0 pr=6 m=1 a=2 r=6 op1=0 op2=0
[   86.481147] 2: w=4 pa=0 pr=6 m=1 a=2 r=6 op1=0 op2=0
[   86.481245] 1: w=5 pa=0 pr=6 m=1 a=2 r=6 op1=0 op2=0
[   86.481362] raid5: raid level 5 set md0 active with 5 out of 6 devices, algorithm 2
[   86.481516] RAID5 conf printout:
[   86.481605]  --- rd:6 wd:5
[   86.481694]  disk 0, o:1, dev:sda3
[   86.481786]  disk 1, o:1, dev:sdb3
[   86.481878]  disk 2, o:1, dev:sdd3
[   86.481968]  disk 3, o:1, dev:sde3
[   86.482065]  disk 4, o:1, dev:sdf3
[   86.482240] md0: detected capacity change from 0 to 14994931384320
[   87.568999] md: bind<sdd2>
[   87.613481]  md0: unknown partition table
[   89.690466] md: bind<sde2>
[   90.674373] EXT4-fs (md0): mounted filesystem with ordered data mode
[   91.434552] md: md0 switched to read-only mode.
[   91.779715] md: bind<sdf2>
[   92.834665] EXT4-fs (md0): mounted filesystem with ordered data mode
[  100.902584] md: md6: recovery done.
[  100.945990] RAID1 conf printout:
[  100.946114]  --- wd:2 rd:2
[  100.946211]  disk 0, wo:0, o:1, dev:sda2
[  100.946304]  disk 1, wo:0, o:1, dev:sdb2
[  108.999104] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
[  120.678106] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
[  134.205868] active port 0 :139
[  134.205963] active port 1 :445
[  134.206069] active port 2 :20
[  134.249638] warning: `proftpd' uses 32-bit capabilities (legacy support in use)
[  171.590074] rule type=2, num=0
[  172.118321] Loading iSCSI transport class v2.0-871.
[  172.162439] iscsi: registered transport (tcp)


tail -200 /mnt/HDA_ROOT/.logs/kmsg

Code: Select all

<6>[    4.925839] uhci_hcd 0000:00:1a.2: irq 19, io base 0x00009480
<6>[    4.941718] hub 5-0:1.0: USB hub found
<6>[    4.941857] hub 5-0:1.0: 2 ports detected
<6>[    4.942209] uhci_hcd 0000:00:1d.0: PCI INT A -> GSI 23 (level, low) -> IRQ 23
<7>[    4.942364] uhci_hcd 0000:00:1d.0: setting latency timer to 64
<6>[    4.942374] uhci_hcd 0000:00:1d.0: UHCI Host Controller
<6>[    4.942537] uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 6
<6>[    4.942770] uhci_hcd 0000:00:1d.0: irq 23, io base 0x00009400
<6>[    4.953942] hub 6-0:1.0: USB hub found
<6>[    4.954089] hub 6-0:1.0: 2 ports detected
<6>[    4.954416] uhci_hcd 0000:00:1d.1: PCI INT B -> GSI 19 (level, low) -> IRQ 19
<7>[    4.954576] uhci_hcd 0000:00:1d.1: setting latency timer to 64
<6>[    4.954586] uhci_hcd 0000:00:1d.1: UHCI Host Controller
<6>[    4.954736] uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 7
<6>[    4.954978] uhci_hcd 0000:00:1d.1: irq 19, io base 0x00009080
<6>[    4.969286] hub 7-0:1.0: USB hub found
<6>[    4.969430] hub 7-0:1.0: 2 ports detected
<6>[    4.969726] uhci_hcd 0000:00:1d.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
<7>[    4.969868] uhci_hcd 0000:00:1d.2: setting latency timer to 64
<6>[    4.969878] uhci_hcd 0000:00:1d.2: UHCI Host Controller
<6>[    4.970028] uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 8
<6>[    4.970284] uhci_hcd 0000:00:1d.2: irq 18, io base 0x00009000
<6>[    4.989618] hub 8-0:1.0: USB hub found
<6>[    4.989770] hub 8-0:1.0: 2 ports detected
<6>[    5.038823] Initializing USB Mass Storage driver...
<6>[    5.039734] usbcore: registered new interface driver usb-storage
<6>[    5.039871] USB Mass Storage support registered.
<4>[    5.040010] usb: create proc systemp successfully
<4>[    5.040189] usb: create proc systemp successfully
<6>[    5.183034] usb 2-1: new high speed USB device using ehci_hcd and address 2
<4>[    5.299596] Using EHCI controller.
<6>[    5.299889] scsi12 : usb-storage 2-1:1.0
<5>[   10.301070] scsi 12:0:0:0: Direct-Access              USB DISK MODULE  PMAP PQ: 0 ANSI: 0 CCS
<5>[   10.303586] sd 12:0:0:0: [sdx] 1007616 512-byte logical blocks: (515 MB/492 MiB)
<5>[   10.304355] sd 12:0:0:0: Attached scsi generic sg23 type 0
<5>[   10.307818] sd 12:0:0:0: [sdx] Write Protect is off
<7>[   10.307949] sd 12:0:0:0: [sdx] Mode Sense: 23 00 00 00
<3>[   10.307957] sd 12:0:0:0: [sdx] Assuming drive cache: write through
<3>[   10.315257] sd 12:0:0:0: [sdx] Assuming drive cache: write through
<6>[   10.315401]  sdx: sdx1 sdx2 sdx3 sdx4 < sdx5 sdx6 >
<3>[   10.331766] sd 12:0:0:0: [sdx] Assuming drive cache: write through
<5>[   10.331879] sd 12:0:0:0: [sdx] Attached SCSI removable disk
<6>[   17.330034] kjournald starting.  Commit interval 5 seconds
<6>[   17.330052] EXT3-fs (sda1): mounted filesystem with writeback data mode
<6>[   17.419558] kjournald starting.  Commit interval 5 seconds
<6>[   17.419576] EXT3-fs (sdb1): mounted filesystem with writeback data mode
<6>[   17.492897] kjournald starting.  Commit interval 5 seconds
<6>[   17.492915] EXT3-fs (sdd1): mounted filesystem with writeback data mode
<6>[   17.564997] kjournald starting.  Commit interval 5 seconds
<6>[   17.565020] EXT3-fs (sde1): mounted filesystem with writeback data mode
<6>[   17.640788] kjournald starting.  Commit interval 5 seconds
<6>[   17.640807] EXT3-fs (sdf1): mounted filesystem with writeback data mode
<6>[   17.849611] md: md9 stopped.
<6>[   17.943979] md: bind<sdd1>
<6>[   17.944297] md: bind<sde1>
<6>[   17.944565] md: bind<sda1>
<6>[   17.944812] md: bind<sdf1>
<6>[   17.945055] md: bind<sdb1>
<6>[   17.946710] raid1: raid set md9 active with 5 out of 6 mirrors
<6>[   17.951264] md9: bitmap initialized from disk: read 5/5 pages, set 676 bits
<6>[   17.951374] created bitmap (65 pages) for device md9
<6>[   17.964334] md9: detected capacity change from 0 to 542769152
<6>[   17.968438]  md9: unknown partition table
<6>[   18.999910] kjournald starting.  Commit interval 5 seconds
<6>[   19.067573] EXT3-fs (md9): using internal journal
<6>[   19.067744] EXT3-fs (md9): mounted filesystem with writeback data mode
<6>[   19.231955] md: md13 stopped.
<6>[   19.383408] md: bind<sdd4>
<6>[   19.383727] md: bind<sde4>
<6>[   19.383983] md: bind<sda4>
<6>[   19.384275] md: bind<sdf4>
<6>[   19.384521] md: bind<sdb4>
<6>[   19.386077] raid1: raid set md13 active with 5 out of 6 mirrors
<6>[   19.389908] md13: bitmap initialized from disk: read 4/4 pages, set 95 bits
<6>[   19.390020] created bitmap (57 pages) for device md13
<6>[   19.412207] md13: detected capacity change from 0 to 469893120
<6>[   19.416377]  md13: unknown partition table
<6>[   20.671852] kjournald starting.  Commit interval 5 seconds
<6>[   20.720061] EXT3-fs (md9): using internal journal
<6>[   20.720235] EXT3-fs (md9): mounted filesystem with writeback data mode
<6>[   39.556659] kjournald starting.  Commit interval 5 seconds
<6>[   40.002679] EXT3-fs (md9): using internal journal
<6>[   40.002853] EXT3-fs (md9): mounted filesystem with writeback data mode
<6>[   61.126164] kjournald starting.  Commit interval 5 seconds
<6>[   61.195172] EXT3-fs (md13): using internal journal
<6>[   61.195364] EXT3-fs (md13): mounted filesystem with writeback data mode
<6>[   68.203013] cryptodev: driver 0.9 loaded.
<6>[   68.226302] usbcore: registered new interface driver hiddev
<6>[   68.230632] usbcore: registered new interface driver usbhid
<6>[   68.230763] usbhid: USB HID core driver
<4>[   68.234125] Register ICH/PCH RTC driver.
<6>[   68.239442] iTCO_vendor_support: vendor-support=0
<6>[   68.244303] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.05
<6>[   68.245820] iTCO_wdt: Found a ICH9R TCO device (Version=2, TCOBASE=0x0860)
<6>[   68.248865] iTCO_wdt: initialized. heartbeat=120 sec (nowayout=0)
<6>[   68.256989] usbcore: registered new interface driver usblp
<4>[   68.264052] ufsd: module license 'Commercial product' taints kernel.
<4>[   68.264168] Disabling lock debugging due to kernel taint
<5>[   68.273610] ufsd: driver (8.6, Aug  1 2012 01:44:14, LBD=OFF, delalloc, acl, ioctl, ugm) loaded at ffffffffa00ac000
<5>[   68.273617] NTFS (with native replay) support included
<5>[   68.273620] Hfs+/HfsX support included
<5>[   68.273623] optimized: speed
<5>[   68.273625] Build_for__QNAP_x86-64_2012-02-09_U86_r184988_b10
<5>[   68.273628]
<6>[   68.293414] xhci_hcd 0000:06:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
<7>[   68.293584] xhci_hcd 0000:06:00.0: setting latency timer to 64
<6>[   68.293595] xhci_hcd 0000:06:00.0: xHCI Host Controller
<6>[   68.293733] xhci_hcd 0000:06:00.0: new USB bus registered, assigned bus number 9
<6>[   68.294135] xhci_hcd 0000:06:00.0: irq 17, io mem 0xfebfe000
<4>[   68.297429] usb usb9: config 1 interface 0 altsetting 0 endpoint 0x81 has no SuperSpeed companion descriptor
<7>[   68.297983] xHCI xhci_add_endpoint called for root hub
<7>[   68.297991] xHCI xhci_check_bandwidth called for root hub
<6>[   68.298357] hub 9-0:1.0: USB hub found
<6>[   68.298485] hub 9-0:1.0: 4 ports detected
<6>[   68.306283] fnotify: Load file notify kernel module.
<6>[   68.309241] fnotify:   Global_Private_Data_List_Init()
<6>[   68.309416] fnotify:   Launch the fnotify thread: 2254
<6>[   68.309811] fnotify:   The fnotify thread starts...
<6>[   69.377446] usbcore: registered new interface driver snd-usb-audio
<6>[   69.386436] usbcore: registered new interface driver snd-usb-caiaq
<6>[   69.418661] pci 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
<7>[   69.418783] pci 0000:00:02.0: setting latency timer to 64
<7>[   69.432571]   alloc irq_desc for 40 on node -1
<7>[   69.432579]   alloc kstat_irqs on node -1
<7>[   69.432594] pci 0000:00:02.0: irq 40 for MSI/MSI-X
<6>[   69.432927] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
<6>[   69.456998] Linux video capture interface: v2.00
<6>[   69.478323] usbcore: registered new interface driver uvcvideo
<6>[   69.478451] USB Video Class driver (v0.1.0)
<6>[   69.622360] 802.1Q VLAN Support v1.8 Ben Greear <greearb@candelatech.com>
<6>[   69.622484] All bugs added by David S. Miller <davem@redhat.com>
<6>[   71.188723] kjournald starting.  Commit interval 5 seconds
<6>[   71.196223] EXT3-fs (md9): using internal journal
<6>[   71.196391] EXT3-fs (md9): mounted filesystem with writeback data mode
<4>[   72.902523] active port 0 :139
<4>[   72.902618] active port 1 :445
<4>[   72.902708] active port 2 :20
<6>[   72.942357] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
<6>[   77.353225] md: bind<sda2>
<6>[   77.354772] raid1: raid set md6 active with 1 out of 1 mirrors
<6>[   77.354920] md6: detected capacity change from 0 to 542769152
<6>[   78.359892]  md6: unknown partition table
<6>[   80.473307] Adding 530040k swap on /dev/md6.  Priority:-1 extents:1 across:530040k
<6>[   85.402176] md: bind<sdb2>
<4>[   85.413073] RAID1 conf printout:
<4>[   85.413192]  --- wd:1 rd:2
<4>[   85.413323]  disk 0, wo:0, o:1, dev:sda2
<4>[   85.413432]  disk 1, wo:1, o:1, dev:sdb2
<6>[   85.413629] md: recovery of RAID array md6
<6>[   85.413739] md: minimum _guaranteed_  speed: 5000 KB/sec/disk.
<6>[   85.413857] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for recovery.
<6>[   85.414079] md: using 128k window, over a total of 530048 blocks.
<6>[   86.282161] md: md0 stopped.
<6>[   86.291618] md: md0 stopped.
<6>[   86.463436] md: bind<sdb3>
<6>[   86.463700] md: bind<sdd3>
<6>[   86.463946] md: bind<sde3>
<6>[   86.464194] md: bind<sdf3>
<6>[   86.464452] md: bind<sda3>
<6>[   86.465865] raid5: device sda3 operational as raid disk 0
<6>[   86.465967] raid5: device sdf3 operational as raid disk 4
<6>[   86.466888] raid5: device sde3 operational as raid disk 3
<6>[   86.466987] raid5: device sdd3 operational as raid disk 2
<6>[   86.467090] raid5: device sdb3 operational as raid disk 1
<6>[   86.480620] raid5: allocated 102176kB for md0
<4>[   86.480841] 0: w=1 pa=0 pr=6 m=1 a=2 r=6 op1=0 op2=0
<4>[   86.480942] 4: w=2 pa=0 pr=6 m=1 a=2 r=6 op1=0 op2=0
<4>[   86.481047] 3: w=3 pa=0 pr=6 m=1 a=2 r=6 op1=0 op2=0
<4>[   86.481147] 2: w=4 pa=0 pr=6 m=1 a=2 r=6 op1=0 op2=0
<4>[   86.481245] 1: w=5 pa=0 pr=6 m=1 a=2 r=6 op1=0 op2=0
<1>[   86.481362] raid5: raid level 5 set md0 active with 5 out of 6 devices, algorithm 2
<4>[   86.481516] RAID5 conf printout:
<4>[   86.481605]  --- rd:6 wd:5
<4>[   86.481694]  disk 0, o:1, dev:sda3
<4>[   86.481786]  disk 1, o:1, dev:sdb3
<4>[   86.481878]  disk 2, o:1, dev:sdd3
<4>[   86.481968]  disk 3, o:1, dev:sde3
<4>[   86.482065]  disk 4, o:1, dev:sdf3
<6>[   86.482240] md0: detected capacity change from 0 to 14994931384320
<6>[   87.568999] md: bind<sdd2>
<6>[   87.613481]  md0: unknown partition table
<6>[   89.690466] md: bind<sde2>
<6>[   90.674373] EXT4-fs (md0): mounted filesystem with ordered data mode
<6>[   91.434552] md: md0 switched to read-only mode.
<6>[   91.779715] md: bind<sdf2>
<6>[   92.834665] EXT4-fs (md0): mounted filesystem with ordered data mode
<6>[  100.902584] md: md6: recovery done.
<4>[  100.945990] RAID1 conf printout:
<4>[  100.946114]  --- wd:2 rd:2
<4>[  100.946211]  disk 0, wo:0, o:1, dev:sda2
<4>[  100.946304]  disk 1, wo:0, o:1, dev:sdb2
<6>[  108.999104] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
<6>[  120.678106] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
<4>[  134.205868] active port 0 :139
<4>[  134.205963] active port 1 :445
<4>[  134.206069] active port 2 :20
<6>[  134.249638] warning: `proftpd' uses 32-bit capabilities (legacy support in use)
<4>[  171.590074] rule type=2, num=0
<6>[  172.118321] Loading iSCSI transport class v2.0-871.
<5>[  172.162439] iscsi: registered transport (tcp)


I'm unable to understand those informations...

[tomaceli]

Hi again,

Just to inform you, months later.., I've finally been able to backup my 6TB data.
Then I changed the #5 HDD for a new one, pulled in the new #3 HDD then powered on my QNAP.

The RAID 5 volume was down, for sure.
I tried to launch a recovery but it failed immediately.

So on, I created a new whole RAID 5 volume with all 6 HDD.
It's currenty at ~20% synchronizing @20Mb/s (will take around 35 hours...)

BITMAP will be enabled and then I'll copy back my data.