[pve-devel] restrict scsi-block to /dev/disk/

[Dietmar Maurer]

There are 16 minor numbers for each major ==> 16x16 = 256 SCSI disks

Note: we need to check major and minor numbers

> -----Original Message-----
> From: Alexandre DERUMIER [mailto:aderumier at odiso.com]
> Sent: Montag, 12. März 2012 09:11
> To: Dietmar Maurer
> Cc: pve-devel at pve.proxmox.com
> Subject: Re: [pve-devel] restrict scsi-block to /dev/disk/
> 
> Ok, got it ! I'll read the doc to see how it's work. (I like to learn new things ;)
> 
> currently with my iscsi I have these majors
> 
> 
> 8
> 65
> 66
> 67
> 68
> 69
> 70
> 71
> 128
> 129
> 130
> 131
> 132
> 133
> 134
> 135
> 
> ----- Mail original -----
> 
> De: "Dietmar Maurer" <dietmar at proxmox.com>
> À: "Alexandre DERUMIER" <aderumier at odiso.com>
> Cc: pve-devel at pve.proxmox.com
> Envoyé: Lundi 12 Mars 2012 08:56:52
> Objet: RE: [pve-devel] restrict scsi-block to /dev/disk/
> 
> Each unix device has a major and minor number:
> 
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=blob;f=Documenta
> tion/devices.txt;h=00383186d8fb3e2c0fc4d5a12852844cb5b2721f;hb=fde7d904
> 9e55ab85a390be7f415d74c9f62dd0f9
> 
> see 'man fstat' for detailes on how toö get those numbers (st_dev field)
> 
> alse see: 'man mknod' and 'man 2 mknod'
> 
> - Dietmar
> 
> 
> 
> > -----Original Message-----
> > From: Alexandre DERUMIER [mailto:aderumier at odiso.com]
> > Sent: Montag, 12. März 2012 08:44
> > To: Dietmar Maurer
> > Cc: pve-devel at pve.proxmox.com
> > Subject: Re: [pve-devel] restrict scsi-block to /dev/disk/
> >
> > I don't known what is major/minor ;)
> >
> > Could you provide an example ?
> >
> > ----- Mail original -----
> >
> > De: "Dietmar Maurer" <dietmar at proxmox.com>
> > À: "Alexandre DERUMIER" <aderumier at odiso.com>
> > Cc: pve-devel at pve.proxmox.com
> > Envoyé: Lundi 12 Mars 2012 08:26:46
> > Objet: RE: [pve-devel] restrict scsi-block to /dev/disk/
> >
> > > Why do you mean by major/minor device number ?
> > >
> > >
> > > we can also try to test if
> > >
> > > /sys/block/sdXXX/device/scsi_device
> > >
> > > exist
> > >
> > >
> > > /dev/disk/by-id/scsi-XXXX are symlink to /dev/sdX
> >
> > But testing major/minor requires one simple stat call - isn't that easier?
> >
> > - Dietmar
> >
> >
> >
> > --
> >
> > --
> >
> >
> >
> >
> > Alexandre D erumier
> > Ingénieur Système
> > Fixe : 03 20 68 88 90
> > Fax : 03 20 68 90 81
> > 45 Bvd du Général Leclerc 59100 Roubaix - France
> > 12 rue Marivaux 75002 Paris - France
> >
> 
> 
> 
> 
> --
> 
> --
> 
> 
> 
> 
> 	Alexandre D erumier
> Ingénieur Système
> Fixe : 03 20 68 88 90
> Fax : 03 20 68 90 81
> 45 Bvd du Général Leclerc 59100 Roubaix - France
> 12 rue Marivaux 75002 Paris - France
>