Public bug reported: Hello All,
First of all I would like to comment that I'm not a Linux newbie, using it since some 10 years now. In my Dell desktop I have two identical IDE harddisks which are seen by Feisty as sda and sdb. On sdb I manually and regularly create a "dd" backup of sda. sdb is marked with a # in /etc/fstab and even switched to "OFF" in the BIOS settings. When I reboot my desktop it seems that the hardisks both can be randomly selected and thus being assigned sda or sdb. For example, yesterday I created a directory under my homedir in which I downloaded the contents of my digicam. This evening I started my PC and the directory seems to be gone. However, when I manually mount the sdb, the directory suddenly shows up there. I'm struggeling with this for some weeks now and this evening I pulled the plugs from the second disk so there cannot be any mistake anymore taken by the system. I've tried to use both /etc/fstab versions, that is the old-style one without the UUID stuff and the new-style with the UUID, to no avail. I think it's bizarre that while the disk is hashed in fstab and set to OFF in the BIOS the Linux kernel still can __random__ access it. My installation was Ubuntu 6.10, then I upgraded to 7.04 and discovered the problem. I thought this might be a flaw in the upgrade so then I executed a complete install. With the smae result. [EMAIL PROTECTED]:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 7.04 Release: 7.04 Codename: feisty [EMAIL PROTECTED]:~$ uname -a Linux renault 2.6.20-15-generic #2 SMP Sun Apr 15 07:36:31 UTC 2007 i686 GNU/Linux [EMAIL PROTECTED]:~$ [ 31.826128] ata1: PATA max UDMA/100 cmd 0x000101f0 ctl 0x000103f6 bmdma 0x0001ffa0 irq 14 [ 31.826205] ata2: PATA max UDMA/100 cmd 0x00010170 ctl 0x00010376 bmdma 0x0001ffa8 irq 15 [ 31.826238] scsi0 : ata_piix [ 31.911822] Floppy drive(s): fd0 is 1.44M [ 31.941123] FDC 0 is a post-1991 82077 [ 31.990949] ata1.00: ata_hpa_resize 1: sectors = 156250000, hpa_sectors = 156250000 [ 31.990955] ata1.00: ATA-7: Maxtor 6Y080L0, YAR41BW0, max UDMA/133 [ 31.990958] ata1.00: 156250000 sectors, multi 8: LBA [ 31.998925] ata1.00: ata_hpa_resize 1: sectors = 156250000, hpa_sectors = 156250000 [ 31.998929] ata1.00: configured for UDMA/100 [ 31.998946] scsi1 : ata_piix [ 32.318179] ata2.00: ATAPI, max UDMA/33 [ 32.481881] ata2.00: configured for UDMA/33 [ 32.485631] scsi 0:0:0:0: Direct-Access ATA Maxtor 6Y080L0 YAR4 PQ: 0 ANSI: 5 [ 32.495455] scsi 1:0:0:0: CD-ROM _NEC DVD_RW ND-3520A 1.04 PQ: 0 ANSI: 5 [ 32.507507] b44.c:v1.01 (Jun 16, 2006) [ 32.507539] ACPI: PCI Interrupt 0000:01:09.0[A] -> GSI 17 (level, low) -> IRQ 20 [ 32.511071] eth0: Broadcom 4400 10/100BaseT Ethernet 00:0f:1f:46:c4:4b [ 32.589424] usb 2-1: new low speed USB device using uhci_hcd and address 2 [ 32.764275] usb 2-1: configuration #1 chosen from 1 choice [ 33.004659] usb 3-1: new full speed USB device using uhci_hcd and address 2 [ 33.146113] SCSI device sda: 156250000 512-byte hdwr sectors (80000 MB) [ 33.146406] sda: Write Protect is off [ 33.146411] sda: Mode Sense: 00 3a 00 00 [ 33.148376] SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 33.151653] SCSI device sda: 156250000 512-byte hdwr sectors (80000 MB) [ 33.152390] sda: Write Protect is off [ 33.152394] sda: Mode Sense: 00 3a 00 00 [ 33.155638] SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 33.155644] sda:<6>usb 3-1: configuration #1 chosen from 1 choice [ 33.171803] sda1 sda2 <<6>hub 3-1:1.0: USB hub found [ 33.176336] hub 3-1:1.0: 4 ports detected [ 33.203495] sda5 > [ 33.204722] sd 0:0:0:0: Attached scsi disk sda [ 33.212526] sd 0:0:0:0: Attached scsi generic sg0 type 0 [ 33.212833] scsi 1:0:0:0: Attached scsi generic sg1 type 5 [EMAIL PROTECTED]:~$ cat /etc/fstab # /etc/fstab: static file system information. # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc defaults 0 0 # /dev/sda1 UUID=59e08117-8097-42ba-a6d1-c2f5048d2156 / ext3 defaults,errors=remount-ro 0 1 # /dev/sda5 UUID=f55685a0-a7bc-414d-b496-ef22aa870ded none swap sw 0 0 /dev/scd0 /media/cdrom0 udf,iso9660 user,noauto 0 0 /dev/fd0 /media/floppy0 auto rw,user,noauto 0 0 [EMAIL PROTECTED]:~$ Does anyone recognize this problem and if so, is there a cure for it? Should you need more information please don't hesitate to contact me. I consider this also as a security vulnerability because there might be data on the other disk while you expect it is lost. Best regards, Ivo Naninck ** Affects: Ubuntu Importance: Undecided Status: Unconfirmed ** Visibility changed to: Public -- Random selected hard disk Ubuntu 7.04 https://bugs.launchpad.net/bugs/116670 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs