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Re: How to know the filesystem type on one block device?



On Thursday 20 December 2007 23:56:04 Timothy wrote:
> On Thursday 20 December 2007 22:27:45 Magicloud Wang wrote:
> > Dear,
> > 	By filesystem type, I mean including swap.
> > 	Mount it or `file` a dd image of it sure can tell me the filesystem. But
> > these can not deal with swap, and too complax.
> > 	Parted can tell this information of a partition, but can not deal with
> > lvm. While `lvdisplay` can not tell.
> >
> > 	So, any idea?
> >
> > Thanks.
>
> tim@ghostknife:~$ sudo file -s /dev/hda1
> /dev/hda1: Linux rev 1.0 ext3 filesystem data (needs journal recovery)
> tim@ghostknife:~$ sudo file -s /dev/hda2
> /dev/hda2: x86 boot sector, extended partition table (last)\011
> tim@ghostknife:~$ sudo file -s /dev/hda5
> /dev/hda5: LUKS encrypted file, ver 1 [aes, cbc-essiv:sha256, sha1] UUID:
> e0e2c360-b902-4b72-af7f-e269205

This also works for swap:

tim@ghostknife:~$ sudo file -s /dev/mapper/ghostknife-swap_1
/dev/mapper/ghostknife-swap_1: Linux/i386 swap file (new style) 1 (4K pages) 
size 345087 pages

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