Re: hard disk device name change after reboot
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It seems it works with some filesystem and do *NOT* work for swap
partition. here as I show below, hde1 is swap partition and there are
no label or uuid exists. as I know, tune2fs can add uuid or label for
ext2/ext3 partitions. How can I add uuid or label for swap partition
then?
Another question is, can I add uuid as device name in grub's menu.lst?
(something like kernel /boot/vmlinuz-2.6.17-2-686 root=/dev/sde2 ro)
cc:~# /lib/udev/vol_id /dev/hde1
ID_FS_USAGE=other
ID_FS_TYPE=swap
ID_FS_VERSION=2
ID_FS_UUID=
ID_FS_UUID_ENC=
ID_FS_LABEL=
ID_FS_LABEL_ENC=
ID_FS_LABEL_SAFE=
cc:~# /lib/udev/vol_id /dev/hde2
ID_FS_USAGE=filesystem
ID_FS_TYPE=ext3
ID_FS_VERSION=1.0
ID_FS_UUID=b9599834-8d37-41fb-9389-c3394c9ea21f
ID_FS_UUID_ENC=b9599834-8d37-41fb-9389-c3394c9ea21f
ID_FS_LABEL=
ID_FS_LABEL_ENC=
ID_FS_LABEL_SAFE=
cc:~# tune2fs -l /dev/hde2 | grep UUID
Filesystem UUID: b9599834-8d37-41fb-9389-c3394c9ea21f
cc:~#
Owen Townend 写道:
> On Sun, 2007-11-04 at 13:55 -0800, Andrew Sackville-West wrote:
>> On Sun, Nov 04, 2007 at 10:49:49PM +0800, hhding.gnu wrote:
>>> hi list,
>>>
>>> I run Debian 4.1.2-13 on Dell PowerEdge 650 with kernel
>>> 2.6.21-2-686. When I install the debian, the device name of
>>> partition is hda1, hda2. After install, I reboot it for times
>>> and it works. One day, I find it fail to reboot, after waiting
>>> for root filesystem for a while, Debian drop to shell(busybox).
>>> Then I notice the device name of hard disk has automaticly
>>> changed to hde1,hde2. some times, the devices name is changed
>>> to others like hdg1, hdg2, etc. after reboot.
>>>
>>> What's the problem then? Can I fix the device name? Any clue
>>> for it is appreciated. :-)
>>>
>> Not sure specifically what is causing this problem, but in the
>> meantime, switch to using LABEL's or UUID's to identify disks.
>> That way you can continue booting until you figure it out.
>>
>> A
>
> Hey, To elaborate, vol_id can get the uuid for a volume which you
> can then use in fstab. Eg this ntfs sata disk partition I called
> 'Y' in windows. $ sudo vol_id /dev/sda1 ID_FS_USAGE=filesystem
> ID_FS_TYPE=ntfs ID_FS_VERSION=3.1 ID_FS_UUID=4862AAF824AADB2F
> <--This part ID_FS_UUID_ENC=4862AAF824AADB2F ID_FS_LABEL=Y <--Or
> this part ID_FS_LABEL_ENC=Y ID_FS_LABEL_SAFE=Y
>
> This then translates to a line like this in /etc/fstab
>
> # /dev/sda1 UUID=4862AAF824AADB2F /ntfs/Y ntfs-3g
> rw,user,users,gid=users,umask=0002,en_AU.utf8 0 0
>
> or 'LABEL=Y' would also work.
>
> Doing this for all volumes renders device name changes a non-issue.
>
>
> Hope this helps. cheers, Owen.
>
> PS/NB: My linux partition uuids look slightly different e.g.
> e029093d-b95f-434a-b005-ab4f807e2ca8 As generated by uuidgen.
>
>
>
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