-"Device independent" naming for devices.
-
-With a Fedora-based appliance, using libata driver, devices have
-"SCSI" names like /dev/sda.
-
-With an EPEL-based appliance, using old ide driver, devices have names
-like /dev/hda.
-
-If we use virtio_blk, devices will have names like /dev/vda.
-
-What a mess.
-
-So the idea would be to add a device independent naming scheme, such
-as the one used by grub:
-
- "(hdX)" X = 0 means 'a', X = 1 means 'b' and so on.
- "(hdX,Y)" Device X, partition Y (in grub, this counts from 0 which is
- deeply confusing).
-
-There would have to be a very simple rule. If guestfsd was expecting
-a /dev block device or partition name, then the alternate form can be
-used, and we would just look it up using the normal output of
-guestfs_list_devices.
-
-Maybe best is to use /dev/sda as the "standard" naming. That
-shouldn't cause conflicts in the appliance because we tightly control
-what drivers are available.
-
-Note there's a lot of hackery that currently exists in tests.c which
-could be *removed* if we made this change.
-
-Open: Should the substitution be done in the library layer or in the
-daemon?
-
-----------------------------------------------------------------------
-
-Qemu options -- After discussion with the KVM developers, they have
-recommended some flags which will improve the safety and reliability
-of KVM. Need to test that these also work under qemu (or at least, do
-no harm):
-
--no-hpet HPET support is broken and should be disabled.
-
--rtc-td-hack Keeps the rtc clock source track time correctly.
-
--drive file=...,if=[ide|virtio],cache=off
- cache=off is necessary to improve reliability in the
- event of a system crash when writing.
-
-----------------------------------------------------------------------
-
git.annexia.org / libguestfs.git / blobdiff