Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.bugs.dist > #1182131

Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR?

From Helmut Grohne <helmut@subdivi.de>
Newsgroups linux.debian.bugs.dist
Subject Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR?
Date 2024-01-13 08:30 +0100
Message-ID <HVGCS-2KMn-3@gated-at.bofh.it> (permalink)
References (3 earlier) <HUYs9-2jOJ-1@gated-at.bofh.it> <HV9xf-2qv3-1@gated-at.bofh.it> <HVv4J-2DLG-17@gated-at.bofh.it> <HUPIe-2eay-19@gated-at.bofh.it> <HVv4J-2DLG-17@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

Hi Francesco,

On Fri, Jan 12, 2024 at 08:05:02PM +0100, Francesco Poli wrote:
> Indeed, the error does not seem to have anything to do with a "No space
> left on device" failure:
> 
> [...]
>   mke2fs 1.47.0 (5-Feb-2023)
>   mkfs.ext4: Permission denied while trying to determine filesystem size
>   E: setup failed: E: command failed: /sbin/mkfs.ext4 -d "$1/mnt" -L autopkgtestvm -E 'offset=134217728,assume_storage_prezeroed=1' 'sid_amd64.img' '25G'
> [...]
> 
> What can cause mkfs.ext4 to fail with a "Permission denied" error?

I think this is our typical problem when dealing with user namespaces. I
guess that the thing that fails here is mkfs.ext4 opening the target
image file (to be formatted). That file has earlier been chowned to the
root uid inside the namespace, so permission should be there, but you
need more. You also need execute permission (to the first uid of your
namespace) for the containing directory up until the root. I guess that
none of those are world-executable and not by chanced owned by your
first subuid nor owned by the first group in your subgid range. It's an
odd requirement and unfortunately one that is very difficult to get rid
of.

Can we accept and document this limitation for now?

Helmut

Back to linux.debian.bugs.dist | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? "Francesco Poli (wintermute)" <invernomuto@paranoici.org> - 2024-01-11 00:00 +0100
  Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Johannes Schauer Marin Rodrigues <josch@debian.org> - 2024-01-11 00:50 +0100
    Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Francesco Poli <invernomuto@paranoici.org> - 2024-01-11 09:20 +0100
      Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Johannes Schauer Marin Rodrigues <josch@debian.org> - 2024-01-11 21:10 +0100
        Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Francesco Poli <invernomuto@paranoici.org> - 2024-01-12 20:10 +0100
          Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Johannes Schauer Marin Rodrigues <josch@debian.org> - 2024-01-12 23:50 +0100
            Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Francesco Poli <invernomuto@paranoici.org> - 2024-01-14 18:40 +0100
              Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Johannes Schauer Marin Rodrigues <josch@debian.org> - 2024-01-15 17:50 +0100
          Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Helmut Grohne <helmut@subdivi.de> - 2024-01-13 08:30 +0100
            Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Johannes Schauer Marin Rodrigues <josch@debian.org> - 2024-01-13 20:30 +0100
              Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Johannes Schauer Marin Rodrigues <josch@debian.org> - 2024-01-13 22:20 +0100
                Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Francesco Poli <invernomuto@paranoici.org> - 2024-01-14 18:40 +0100
                Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Helmut Grohne <helmut@subdivi.de> - 2024-01-15 07:40 +0100
                Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Francesco Poli <invernomuto@paranoici.org> - 2024-01-16 00:30 +0100
                Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Helmut Grohne <helmut@subdivi.de> - 2024-01-16 07:40 +0100
                Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Johannes Schauer Marin Rodrigues <josch@debian.org> - 2024-01-16 11:10 +0100
                Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Johannes Schauer Marin Rodrigues <josch@debian.org> - 2024-01-23 09:10 +0100
                Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Johannes Schauer Marin Rodrigues <josch@debian.org> - 2024-01-25 13:40 +0100
                Bug#1060416: mmdebstrap-autopkgtest-build-qemu fails on mkfs.ext4; does it require a 25 GiB TMPDIR? Francesco Poli <invernomuto@paranoici.org> - 2024-01-27 19:00 +0100

csiph-web