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[GH-ISSUE #56] cryptsetup issue #30

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opened 2026-05-05 04:46:39 -06:00 by gitea-mirror · 4 comments

gitea-mirror commented

2026-05-05 04:46:39 -06:00

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Originally created by @webslim on GitHub (Sep 7, 2015).
Original GitHub issue: https://github.com/netblue30/firejail/issues/56

I've run into the following issue:

open a LUKS device with cryptsetup and mount it
start firejail sandbox
unmount the drive
run "cryptsetup luksClose $device". (outside of the sandbox)
-> cryptsetup can't close the dm device and complains that it is still in use.

Originally created by @webslim on GitHub (Sep 7, 2015). Original GitHub issue: https://github.com/netblue30/firejail/issues/56 I've run into the following issue: 1. open a LUKS device with cryptsetup and mount it 2. start firejail sandbox 3. unmount the drive 4. run "cryptsetup luksClose $device". (outside of the sandbox) -> cryptsetup can't close the dm device and complains that it is still in use.

gitea-mirror closed this issue

2026-05-05 04:46:41 -06:00

gitea-mirror commented

2026-05-05 04:46:46 -06:00

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@ghost commented on GitHub (Sep 7, 2015):

The device might still be mounted in the firejail's context. Try joining the existing firejail using a firejail --join command and checking to see if it's still mounted in there.

@ghost commented on GitHub (Sep 7, 2015): The device might still be mounted in the firejail's context. Try joining the existing firejail using a `firejail --join` command and checking to see if it's still mounted in there.

gitea-mirror commented

2026-05-05 04:46:51 -06:00

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@netblue30 commented on GitHub (Sep 8, 2015):

Each sandbox has an independent mount table/mount namespace. This table starts as a copy of the main system mount table, and evolves independently after that. Your LUKS device has an entry in both the main mount table and in the sandbox mount table. You'll have to unmount it also in the sandbox.

@netblue30 commented on GitHub (Sep 8, 2015): Each sandbox has an independent mount table/mount namespace. This table starts as a copy of the main system mount table, and evolves independently after that. Your LUKS device has an entry in both the main mount table and in the sandbox mount table. You'll have to unmount it also in the sandbox.

gitea-mirror commented

2026-05-05 04:46:56 -06:00

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@webslim commented on GitHub (Sep 11, 2015):

Thank you!

@webslim commented on GitHub (Sep 11, 2015): Thank you!

gitea-mirror commented

2026-05-05 04:46:59 -06:00

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@netblue30 commented on GitHub (Sep 11, 2015):

you're welcome

@netblue30 commented on GitHub (Sep 11, 2015): you're welcome

gitea-mirror referenced this issue

2026-05-05 10:02:50 -06:00

[PR #30] [MERGED] Update disable-mgmt.inc #3515

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Reference: github-starred/firejail#30

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