Messages in this thread | | | Date | Wed, 7 Mar 2018 17:50:43 -0500 | From | "Theodore Y. Ts'o" <> | Subject | Re: ext4 ignoring rootfs default mount options |
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On Wed, Mar 07, 2018 at 02:13:24PM -0500, Lennart Sorensen wrote: > > Trying to use tune2fs -E mount_opts to set some default options, and > can't figure out how to enter two options at once. > > ... > > Sure in this case I can set one with -o and the other with -E, but in > general there seems to be a small problem here, probably only in user > space though. Seems tune2fs needs some change in how it deals with > extended options that contain commas.
Yes, this is a shortcoming in tune2fs. You can set extended mount options using debugfs:
debugfs -w -R "set_super_value mount_opts foo,bar" /dev/sda1
... but there ought to be some way to support some kind of quoting mechanism so that tune2fs can understand when a comma is part of an extended option value, as opposed to separating extended options.
Extended options haven't been used much, so it's not been something that has gotten a lot of polish. Backing up for a bit, is there a reason why you need so many mount options when mounting the root file sytsem? Specifically, why do you want to turn off dellayed allocation?
- Ted
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