This allows the FS to just live, uncompressed, in cache.
This is generally a bad idea, however:
- In a hypothetically super-tuned diskless image, the lack of double-cache can offset the lack of compression
- The image will have supreme read performance
- It will have the most deterministic memory behavior
By default, the squashfs file was being cached as well as the contents after extraction.
This is superfluous pressure on the cache of the OS.
However, it does help keep the image afloat through 'confignet', so
leave it on until onboot completes, then reclaim cache and disable further caching.
Rather than treat both as the same, since untethered has everything up front anyway, go ahead and extract the filesystem.
This makes the mount look more straightforward and makes it so deletion of files from
the image also frees ram.
Reduce obvious output about skipped devices.
Rule out any read-only device.
Amend minimum size to 2GB.
Among same priority devices, select the smallest target.
If debugssh is not requsted, the initramfs is not needed.
Do not unshare the mount namespace, leave the kernel relevant namespace 'normal'
Remove some initramfs content to free up some memory.
Node attribute ntp.servers in nodeattrib ca now be used in stateless images
modified: confluent_osdeploy/el7-diskless/profiles/default/scripts/onboot.sh
modified: confluent_osdeploy/el8-diskless/profiles/default/scripts/onboot.sh
modified: confluent_osdeploy/el9-diskless/profiles/default/scripts/onboot.sh
A variant of the M.2 RAID enablement kit does not manifest with nvme
driver. Address this by allowing 'nvm' subsystype. to allow blank driver.
Also, to be on the safe side, have self.driver always be a string,
so it can be 'falsey' but still work as a string.
If syncfiles fails, keep it retrying.
Also, slow down sync checking to avoid hammering the system.
Further, randomized delay to spread highly synchronized requestors.
Block attempts to do multiple concurrent syncfile runs.
Fix various callbacks when using IPv6 based deployment.
Do not attempt to restore erroneously cloned zram partitions.
Convert LVM names to new LVM names consistent with source naming scheme.
Push new kernel command line into /boot/loader and /etc/kernel/cmdline.
Some versions start manifesting nvme devnames with 'c', which
are to be used to interact with multipath to have raw devices
backing a traditional nvme device.
Main difference from EL8 is different grub strategy. To cope, capture
the uuid of new /boot and manipulate the
stub grub.cfg with the right uuid.
In EL8, the efi has the main grub, EL9 changes to have /boot host the 'real' grub,
causing us to have to modify the stub grub.
