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Mentioned how to use /dev/vda without /dev/sr1 link

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This commit is contained in:
Thomas Schmitt 2011-11-09 20:49:37 +00:00
parent 9d789cd160
commit 086d4ba365
1 changed files with 16 additions and 7 deletions
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libisoburn/trunk/doc/qemu_xorriso.wiki
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@ -59,11 +59,17 @@ which had access to the Internet when the guest was installed.
Preparations on guest system Debian GNU/Linux 6.0.3 i386 Preparations on guest system Debian GNU/Linux 6.0.3 i386
There appears no /dev/sr for the passthrough drive. Since libburn There appears no /dev/sr for the passthrough drive. Thus libburn will not
on Linux currently insists in finding a /dev/sr which points to the list it by its drive search function. One may use it nevertheless. But
drive, there is need for an udev rule. xorriso will only do so if prefix "mmc:" is used with the address:
{{{
-dev mmc:/dev/vda
}}}
The drive will be listed by libburn if there is a symbolic link /dev/sr*
pointing to it. On Debian 6, this link persists only if it is created
by an udev rule.
/lib/udev/rules.d/50-udev-default.rules: In /lib/udev/rules.d/50-udev-default.rules:
{{{ {{{
KERNEL=="vda", SYMLINK+="sr1" KERNEL=="vda", SYMLINK+="sr1"
}}} }}}
@ -72,6 +78,8 @@ libburn on Linux needs rw-permission for the drive's device node.
The virtual device /dev/vda is in group "disk". Usual for CD drives is The virtual device /dev/vda is in group "disk". Usual for CD drives is
group "cdrom", to which i (or the Debian installer ?) have added my group "cdrom", to which i (or the Debian installer ?) have added my
normal user when i installed the guest system. normal user when i installed the guest system.
Like with the symbolic link, such a change persists on Debian 6 only as
udev rule.
In /lib/udev/rules.d/91-permissions.rules: In /lib/udev/rules.d/91-permissions.rules:
{{{ {{{
@ -291,8 +299,9 @@ Blanking to multi-session capability:
$ xorriso -outdev /dev/sr1 -blank as_needed $ xorriso -outdev /dev/sr1 -blank as_needed
}}} }}}
This will need as long as writing the DVD-RW up to its end. This will need as long as writing the DVD-RW up to its end.
Blanking option "as_neede" lets xorriso decide what to do in order Blanking option "as_needed" lets xorriso decide what to do in order
to make the medium type writable from scratch. to make the medium writable from scratch. With DVD-RW it will decide for
-blank "all".
The report on stderr should end by The report on stderr should end by
{{{ {{{
@ -310,7 +319,7 @@ The report on stderr should end by
---------------------------------------------------------------------- ----------------------------------------------------------------------
Writing multiple sessions (DVD-R write type Incremental): Writing multiple sessions (DVD-RW write type Incremental):
This time do not perform command -close "on", so that the medium This time do not perform command -close "on", so that the medium
stays writable: stays writable: