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Old 12-27-2007, 04:25 PM   #1
digitalmojo17
LQ Newbie
 
Registered: Oct 2005
Location: toronto
Distribution: slackware
Posts: 10

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can't mount /home after app failure and error trying to reboot

my home partition dissappeareda after aff an application failed to run its task successfully. the program froze when i tried to close it - did not respond to "killall" command and subsequently affected the browsers that were open in that particular workstation. i exited the x system and went to reboot, there was an immediate error message and the computer froze. i hit the reset manually, expecting a scan of my hard disks. the system was and is unable to mount the /home partition at all. running e2fsck returns

Quote:
Couldn't find ext2 superblock, trying backup blocks...
e2fsck: Bad magic number in super-block while trying to open /dev/sdb

The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193 <device>
my fstab entries are fine.

dmesg returns:


Quote:
>ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
scsi1: ERROR on channel 0, id 0, lun 0, CDB: 0x28 00 00 00 00 7e 00 00 08 00
Current sd08:15: sns = 70 3
ASC=11 ASCQ= 4
Raw sense data:0x70 0x00 0x03 0x00 0x00 0x00 0x00 0x0a 0x00 0x00 0x00 0x00 0x11 0x04 0x00 0x00 0x00 0x00
I/O error: dev 08:15, sector 0
EXT2-fs: Couldn't read superblock on 2nd try.
Linux Kernel Card Services 3.1.22
options: [pci] [cardbus] [pm]
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
Intel ISA PCIC probe: not found.
Databook TCIC-2 PCMCIA probe: not found.
ds: no socket drivers loaded!
via-rhine.c:v1.10-LK1.1.19 July-12-2003 Written by Donald Becker
http://www.scyld.com/network/via-rhine.html
eth0: VIA VT6102 Rhine-II at 0xd400, 00:13:8f:03:11:0f, IRQ 11.
eth0: MII PHY found at address 1, status 0x786d advertising 05e1 Link 0021.
via82xx: Assuming DXS channels with 48k fixed sample rate.
Please try dxs_support=1 or dxs_support=4 option
and report if it works on your machine.
PCI: Setting latency timer of device 00:11.5 to 64
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
ehci_hcd 00:10.4: VIA Technologies, Inc. USB 2.0
ehci_hcd 00:10.4: irq 5, pci mem f8b6a800
usb.c: new USB bus registered, assigned bus number 1
ehci_hcd 00:10.4: USB 2.0 enabled, EHCI 1.00, driver 2003-Dec-29/2.4
hub.c: USB hub found
hub.c: 8 ports detected
uhci.c: USB Universal Host Controller Interface driver v1.1
uhci.c: USB UHCI at I/O 0xcc00, IRQ 10
usb.c: new USB bus registered, assigned bus number 2
hub.c: USB hub found
hub.c: 2 ports detected
uhci.c: USB UHCI at I/O 0xc800, IRQ 10
usb.c: new USB bus registered, assigned bus number 3
hub.c: USB hub found
hub.c: 2 ports detected
uhci.c: USB UHCI at I/O 0xc400, IRQ 11
usb.c: new USB bus registered, assigned bus number 4
hub.c: 2 ports detected
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
ohci1394: $Rev: 1045 $ Ben Collins <bcollins@debian.org>
ohci1394_0: OHCI-1394 1.0 (PCI): IRQ=[3] MMIO=[febfe800-febfefff] Max Packet=[2048]
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
ieee1394: Host added: ID:BUS[0-00:1023] GUID[0012060000003a74]
hub.c: new USB device 00:10.4-6, assigned address 2
usb.c: USB device 2 (vend/prod 0x3f0/0x4e11) is not claimed by any active driver.
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
hub.c: new USB device 00:10.0-1, assigned address 2
usb.c: USB device 2 (vend/prod 0x46d/0x870) is not claimed by any active driver.
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
usb.c: registered new driver usblp
printer.c: usblp0: USB Bidirectional printer dev 2 if 1 alt 0 proto 2 vid 0x03F0 pid 0x4E11
printer.c: v0.13: USB Printer Device Class driver
Initializing USB Mass Storage driver...
usb.c: registered new driver usb-storage
scsi3 : SCSI emulation for USB Mass Storage devices
Vendor: HP Model: Photosmart 2575 Rev: 1.00
Type: Direct-Access ANSI SCSI revision: 02
Attached scsi removable disk sdc at scsi3, channel 0, id 0, lun 0
sdc: Unit Not Ready, sense:
Current 00:00: sns = 70 2
ASC=3a ASCQ= 0
Raw sense data:0x70 0x00 0x02 0x00 0x00 0x00 0x00 0x0c 0x00 0x00 0x00 0x00 0x3a 0x00 0x00 0x00 0x00 0x00 0x00 0x00
sdc : READ CAPACITY failed.
sdc : status = 1, message = 00, host = 0, driver = 08
Current sd00:00: sns = 70 2
ASC=3a ASCQ= 0
Raw sense data:0x70 0x00 0x02 0x00 0x00 0x00 0x00 0x0c 0x00 0x00 0x00 0x00 0x3a 0x00 0x00 0x00 0x00 0x00 0x00 0x00
sdc : block size assumed to be 512 bytes, disk size 1GB.
sdc: I/O error: dev 08:20, sector 0
I/O error: dev 08:20, sector 0
unable to read partition table
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 2
USB Mass Storage support registered.
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
Video for Linux One (2.2.16). Major device: 81
Video for Linux Two (V0.20). Major device: 81
Linux video capture interface: v1.00
video_dev: unable to get major 81
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.5
parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE,EPP]
parport0: irq 7 detected
lp0: using parport0 (polling).
CSLIP: code copyright 1989 Regents of the University of California
PPP generic driver version 2.4.2
PPP BSD Compression module registered
hub.c: new USB device 00:10.4-2, assigned address 3
scsi4 : SCSI emulation for USB Mass Storage devices
Vendor: Maxtor 6 Model: L300R0 Rev: BAJ4
Type: Direct-Access ANSI SCSI revision: 02
Attached scsi disk sdd at scsi4, channel 0, id 0, lun 0
SCSI device sdd: 586114704 512-byte hdwr sectors (300091 MB)
sdd: sdd1
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 3
kjournald starting. Commit interval 5 seconds
EXT3-fs warning: maximal mount count reached, running e2fsck is recommended
EXT3 FS 2.4-0.9.19, 19 August 2002 on sd(8,49), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
scsi1: ERROR on channel 0, id 0, lun 0, CDB: 0x28 00 00 00 00 7e 00 00 08 00
Current sd08:15: sns = 70 3
ASC=11 ASCQ= 4
Raw sense data:0x70 0x00 0x03 0x00 0x00 0x00 0x00 0x0a 0x00 0x00 0x00 0x00 0x11 0x04 0x00 0x00 0x00 0x00
I/O error: dev 08:15, sector 0
EXT2-fs: Couldn't read superblock on 2nd try.
ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
scsi1: ERROR on channel 0, id 0, lun 0, CDB: 0x28 00 00 00 00 7e 00 00 08 00
Current sd08:15: sns = 70 3
ASC=11 ASCQ= 4
Raw sense data:0x70 0x00 0x03 0x00 0x00 0x00 0x00 0x0a 0x00 0x00 0x00 0x00 0x11 0x04 0x00 0x00 0x00 0x00
I/O error: dev 08:15, sector 0
EXT2-fs: Couldn't read superblock on 2nd try.
ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
scsi1: ERROR on channel 0, id 0, lun 0, CDB: 0x28 00 00 00 00 7e 00 00 08 00
Current sd08:15: sns = 70 3
ASC=11 ASCQ= 4
Raw sense data:0x70 0x00 0x03 0x00 0x00 0x00 0x00 0x0a 0x00 0x00 0x00 0x00 0x11 0x04 0x00 0x00 0x00 0x00
I/O error: dev 08:15, sector 0
EXT2-fs: Couldn't read superblock on 2nd try.
can anyone help me out?

thanks
 
Old 12-27-2007, 04:44 PM   #2
pljvaldez
LQ Guru
 
Registered: Dec 2005
Location: Somewhere on the String
Distribution: Debian Wheezy (x86)
Posts: 6,094

Rep: Reputation: 281Reputation: 281Reputation: 281
You might try running testdisk to see if you can repair the partition table.
 
Old 12-27-2007, 06:18 PM   #3
exvor
Senior Member
 
Registered: Jul 2004
Location: Phoenix, Arizona
Distribution: Gentoo, LFS, Debian,Ubuntu
Posts: 1,537

Rep: Reputation: 87
Code:
EXT2-fs: Couldn't read superblock on 2nd try.

This makes me think you have a bad superblock on the file system try some recovery efforts or a backup if you have one.

a e2fsck on the parttion might not be a bad idea
 
Old 12-27-2007, 08:08 PM   #4
KnightHawk
Member
 
Registered: Aug 2005
Posts: 128

Rep: Reputation: 15
If you ever get it back, convert that bad boy to EXT3. Ext2 is just asking for headache.
 
Old 12-28-2007, 08:24 AM   #5
dracolich
Senior Member
 
Registered: Jul 2005
Distribution: Slackware
Posts: 1,274

Rep: Reputation: 63
Quote:
>ata2: status=0x51 { DriveReady SeekComplete Error }
ata2: error=0x40 { UncorrectableError }
...
EXT2-fs: Couldn't read superblock on 2nd try.
This part looks like the drive is suffering hardware failure. I would first check the cable connections inside the machine. If that doesn't help then boot a liveCD distro and run e2fsck -cfv to force a verbose check and look for bad blocks, then backup anything you can so you can replace the drive.
 
Old 12-31-2007, 09:03 AM   #6
evilDagmar
Member
 
Registered: Mar 2005
Location: Right behind you.
Distribution: NBG, then randomed.
Posts: 480

Rep: Reputation: 31
If you put a filesystem without a partition directly onto /dev/sdb, slap yourself now.

...otherwise, you typo'd in your /etc/fstab somehow. If it's trying to mount /dev/sdb as /home, change that to /dev/sdb1.
 
  


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