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Support idmapped mounts (kernel 5.12) #5075

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AkihiroSuda opened this issue Feb 24, 2021 · 3 comments
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Support idmapped mounts (kernel 5.12) #5075

AkihiroSuda opened this issue Feb 24, 2021 · 3 comments
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exp/expert kind/feature
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2.0

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@AkihiroSuda
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What is the problem you're trying to solve
Remove the chown overhead of UserNS-remap mode.
https://github.com/containerd/containerd/blob/v1.5.0-beta.1/container_opts_unix.go#L34-L38

Describe the solution you'd like
Use idmapped mounts that was recently merged in the kernel 5.12 tree torvalds/linux@7d6beb7
@AkihiroSuda AkihiroSuda added this to the 1.6 milestone Feb 24, 2021
@AkihiroSuda
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This is being experimented in #4734 by @mauriciovasquezbernal

@artqzn
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artqzn commented Aug 17, 2021

Dear reviewers, could you please check PR #5888. This is updated support for idmapped mounts based on PR #4734.
Thank you in advance!

@artqzn artqzn mentioned this issue Aug 18, 2021
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@dmcgowan dmcgowan modified the milestones: 1.6, 1.7 Dec 9, 2021
@dmcgowan dmcgowan modified the milestones: 1.7, 2.0 Feb 13, 2023
@AkihiroSuda
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Implemented in #5890

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@dmcgowan @AkihiroSuda @artqzn