-
Senior Member
registered user
Knoppix 8.3 read-only under kvm: A feature and a bug
For several years I have run both the Knoppix ISO-image and disk-based versions under kvm for installs, maintenance etc. The basic method works for 8.3 too, but only as far as the first flash install.
Klaus K has made Knoppix more "fool-proof" to run under kvm by restricting it to read-only mode. For many users, that is clearly a feature: You may run your ordinary Knoppix install under kvm so it functions as both host and guest at once, but if persistent store is involved, and the host and the guest instances perform different updates to that, then what?
It is only a question of time until the file system is corrupted - it is easy to imagine that prof. Knopper has introduced this restriction from experiences with broken systems.
The bug is that it doesn't stop there. If you run different copies of Knoppix on different partitions, or run Knoppix under another OS variety, even another version of Knoppix, the only thing to be careful about is that the partition where the persistent store of the VM resides is not writable by other OS'es. But don't try to explain that to Knoppix 8.3. It only checks whether it is run under kvm, and in that case, the system is mounted read-only. Which kind of blocks many important uses of Knoppix images.
While the default behaviour is "correct", there must be a cheatcode for disabling it, e.g. VIRTWRITE. I guess specialists on minirt.gz should not have too much problems rolling their own, but this is a general issue, so for me it belongs in Knopper-land proper.
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
-
Forum Rules
ASUS H110M-R Motherboard Intel 6th/7th Gen LGA1151 DDR4 Micro-ATX i/o shield
$42.00
ASUS Prime B250M-C LGA1151 DDR4 Desktop Motherboard USB 3.0 w/ I/O Shield
$39.99
Asus H110M-C LGA 1151 DDR4 SDRAM Desktop Motherboard w/ I/O shield
$39.95
Asrock Z390 Phantom Gaming 4S/AC Wifi 8th/9th Gen Intel 1151 Motherboard Bulk
$41.16
Asus PRIME H510M-A Intel LGA 1200 DDR4 Desktop Motherboard
$69.99
MSI PRO B650-P WiFi AMD AM5 DDR5 WiFi 6E ProSeries Motherboard
$80.71
Asus B85M-E B85 LGA 1150 Micro ATX DDR3 SATA3.0 Desktop Motherboard With I/O
$32.99
MSI A320M-A Pro mATX AM4 Motherboard (Ryzen 1000-5000 Ready)
$49.99
MSI PRO B650-P WiFi AMD AM5 DDR5 WiFi 6E ProSeries Motherboard
$96.01
ASUS PRIME Z690-P WIFI D4 ATX Motherboard Intel LGA1700 DDR4 HDMI
$99.99