[Git-commits] [grml/live-boot-grml] 9829d8: 9990-misc-helpers.sh: allow fs type override in fr...

[Michael Prokop]

  Branch: refs/heads/master
  Home:   https://github.com/grml/live-boot-grml
  Commit: 9829d8a93e0e602829c09065ad7e776a9f905e23
      https://github.com/grml/live-boot-grml/commit/9829d8a93e0e602829c09065ad7e776a9f905e23
  Author: Mihai Moldovan <ionic at ionic.de>
  Date:   2021-03-08 (Mon, 08 Mar 2021)

  Changed paths:
    M components/9990-misc-helpers.sh

  Log Message:
  -----------
  9990-misc-helpers.sh: allow fs type override in fromiso feature.

The overriding feature can be turned on/used by prefixing the file
system type to the path, separated from the device node with a colon.

Example (good override): ext4:/dev/vda49/path/to/grml.iso

If the file system specification contains any non-alphanumerical
characters other than '-' or '_', it will be treated as part of the
actual path, since, at least currently, all known file systems match
this rule.

Example (no override): cra$$$yf§:/dev/sr0/another_path/to/grml.iso

In the former example, no file system type override is detected, which
means that the code will eventually search for a device called
'cra$$$yf§:/dev/sr0' (which, granted, doesn't make a lot of sense).

Sometimes it's necessary or at least handy to specify the file system
used for mounting the fromiso backing device directly.

For instance, putting the ISO file on a RAID1-backed device will fail to
mount it through autodetection (which, really, in most cases is a good
thing to not corrupt the array).

This change also mounts the backing device read-only, which should
enable safe usage and mounting even on RAID1 devices. Note, though, that
read-only mounts are not really very much "read-only", since they
actually sometimes still change on-disk file system metadata, like the
last time the device was mounted).

This said, it should be safe enough and users can easily re-sync the
array to ensure consistency later on.


  Commit: 275828e2d9d9c2b83eae94544e4d43d2027702e0
      https://github.com/grml/live-boot-grml/commit/275828e2d9d9c2b83eae94544e4d43d2027702e0
  Author: Michael Prokop <mika at grml.org>
  Date:   2021-03-09 (Tue, 09 Mar 2021)

  Changed paths:
    M components/9990-misc-helpers.sh

  Log Message:
  -----------
  Merge remote-tracking branch 'origin/github/pr/13'


Compare: https://github.com/grml/live-boot-grml/compare/9d4ad8c0c812...275828e2d9d9