Am 19.10.2013 21:39, schrieb Adam W. Dace:
> This is really more of a Linux virtualization question, but I'd rather ask 
> you people than bother the hosting
> company if possible.
> 
> First off, I was completely wrong about raw disk being available.  My 
> apologies, I should've checked.  That part is
> simple...they have a nice web GUI for that.
> 
> Virtualization Software: Xen
> Host OS: CentOS 6.4
> 
> What I'm stuck on is how do I access a raw disk volume from Linux?
> 
> If it helps, my /etc/fstab looks like this:
> 
> /dev/xvda       /               ext3    noatime,errors=remount-ro       0 1
> /dev/xvdb       none            swap    sw                              0 0
> /proc           /proc           proc    defaults                        0 0
> tmpfs           /dev/shm        tmpfs   nodev,nosuid,noexec             0 0
> devpts          /dev/pts        devpts  gid=5,mode=620                  0 0
> sysfs           /sys            sysfs   defaults                        0 0

you do not need it to acess from linux nor doe sit appear in fstab or df output
that is why it is called RAW disk, it is unformatted and under application 
control

in the case below (from production) the whole /dev/sdc disk is assigend
to ATS and the udev-rule is needed to allow the ATS user write access

nobody and nothig but ATS will ever access this drive
_____________________________________

[root@proxy:~]$ df
Dateisystem    Typ  Größe Benutzt Verf. Verw% Eingehängt auf
/dev/sdb1      ext4  5,8G    668M  5,2G   12% /
/dev/sda1      ext4  493M     34M  456M    7% /boot
_____________________________________

[root@proxy:~]$ cat /etc/trafficserver/storage.config
# Storage Configuration file

# /etc/udev/rules.d/50-ats.rules
# Apache Traffic Server owns disk for RAW access
# KERNEL=="sdc", OWNER="ats"

/dev/sdc
_____________________________________

[root@proxy:~]$ ls /dev/ | grep sd
brw-rw---- 1 root disk      8,   0 2013-10-11 19:36 sda
brw-rw---- 1 root disk      8,   1 2013-10-11 19:36 sda1
brw-rw---- 1 root disk      8,  16 2013-10-11 19:36 sdb
brw-rw---- 1 root disk      8,  17 2013-10-11 19:36 sdb1
brw------- 1 ats  root      8,  32 2013-10-19 22:05 sdc





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