Public bug reported:
This is a feature request.
Currently, when `overlayroot=tmpfs:size=4G` is passed via the kernel
command line, the overlayroot initramfs script in cloud-initramfs-tools
ignores the `:size=` parameter and creates a tmpfs with the default size
instead of the specified size. This prevents users from controlling the
size of the writable overlay filesystem, which is particularly important
for MAAS ephemeral deployments where users need to specify tmpfs sizes
via kernel options. The overlayroot script should be modified to parse
the `:size=` parameter from the kernel command line (e.g.,
`overlayroot=tmpfs:size=4G` or `overlayroot=tmpfs:size=25%`) and mount
`/media/root-rw` with the specified size using `mount -o size=X`. This
would provide a cleaner solution for controlling overlayroot tmpfs size
at boot time.
** Affects: cloud-initramfs-tools (Ubuntu)
Importance: Undecided
Status: New
** Summary changed:
- overlayroot initramfs script should parse :size= parameter from kernel
command li
+ overlayroot initramfs script should parse :size= parameter from kernel
command line
** Description changed:
+ This is a feature request.
+
Currently, when `overlayroot=tmpfs:size=4G` is passed via the kernel
command line, the overlayroot initramfs script in cloud-initramfs-tools
ignores the `:size=` parameter and creates a tmpfs with the default size
instead of the specified size. This prevents users from controlling the
size of the writable overlay filesystem, which is particularly important
for MAAS ephemeral deployments where users need to specify tmpfs sizes
via kernel options. The overlayroot script should be modified to parse
the `:size=` parameter from the kernel command line (e.g.,
`overlayroot=tmpfs:size=4G` or `overlayroot=tmpfs:size=25%`) and mount
`/media/root-rw` with the specified size using `mount -o size=X`. This
would provide a cleaner solution for controlling overlayroot tmpfs size
at boot time.
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https://bugs.launchpad.net/bugs/2139105
Title:
overlayroot initramfs script should parse :size= parameter from kernel
command line
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