[Buildroot] [Bug 14196] New: when using raspberrypicm4io_64_defconfig, make fails with mkfs.ext4: No such file or directory while trying to determine filesystem size

From: bugzilla@busybox.net
To: buildroot@uclibc.org
Subject: [Buildroot] [Bug 14196] New: when using raspberrypicm4io_64_defconfig, make fails with mkfs.ext4: No such file or directory while trying to determine filesystem size
Date: Sun, 05 Sep 2021 11:16:01 +0000	[thread overview]
Message-ID: <bug-14196-163@https.bugs.busybox.net/> (raw)

https://bugs.busybox.net/show_bug.cgi?id=14196

            Bug ID: 14196
           Summary: when using raspberrypicm4io_64_defconfig, make fails
                    with mkfs.ext4: No such file or directory while trying
                    to determine filesystem size
           Product: buildroot
           Version: unspecified
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Other
          Assignee: unassigned@buildroot.uclibc.org
          Reporter: leon@exquisip.nl
                CC: buildroot@uclibc.org
  Target Milestone: ---

Created attachment 9086
  --> https://bugs.busybox.net/attachment.cgi?id=9086&action=edit
patch fs/ext2/ext2.mk to touch file that'll contain filesystem

After using raspberrypicm4io_64_defconfig, then doing make, the build process
ends as follows:

...
printf '   \n' >>
/home/ldr/src/buildroot/output/build/buildroot-fs/ext2/fakeroot
printf '   \n' >>
/home/ldr/src/buildroot/output/build/buildroot-fs/ext2/fakeroot
printf '        rm -f /home/ldr/src/buildroot/output/images/rootfs.ext2\n      
/home/ldr/src/buildroot/output/host/sbin/mkfs.ext4 -d
/home/ldr/src/buildroot/output/build/buildroot-fs/ext2/target -r 1 -N 0 -m 5 -L
"rootfs" -O ^64bit /home/ldr/src/buildroot/output/images/rootfs.ext2 "120M" ||
{ ret=$?; echo "*** Maybe you need to increase the filesystem size
(BR2_TARGET_ROOTFS_EXT2_SIZE)" 1>&2; exit $ret; }\n' >>
/home/ldr/src/buildroot/output/build/buildroot-fs/ext2/fakeroot
chmod a+x /home/ldr/src/buildroot/output/build/buildroot-fs/ext2/fakeroot
PATH="/home/ldr/src/buildroot/output/host/bin:/home/ldr/src/buildroot/output/host/sbin:/home/ldr/.asdf/shims:/opt/asdf-vm/bin:/usr/local/bin:/usr/bin:/var/lib/snapd/snap/bin:/usr/local/sbin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl"
FAKEROOTDONTTRYCHOWN=1 /home/ldr/src/buildroot/output/host/bin/fakeroot --
/home/ldr/src/buildroot/output/build/buildroot-fs/ext2/fakeroot
rootdir=/home/ldr/src/buildroot/output/build/buildroot-fs/ext2/target
table='/home/ldr/src/buildroot/output/build/buildroot-fs/full_devices_table.txt'
mke2fs 1.46.3 (27-Jul-2021)
mkfs.ext4: No such file or directory while trying to determine filesystem size
*** Maybe you need to increase the filesystem size
(BR2_TARGET_ROOTFS_EXT2_SIZE)
make: *** [fs/ext2/ext2.mk:63:
/home/ldr/src/buildroot/output/images/rootfs.ext2] Error 1

--

I can reproduce in commandline by just running:

/home/ldr/src/buildroot/output/host/sbin/mkfs.ext4 -d
/home/ldr/src/buildroot/output/build/buildroot-fs/ext2/target -r 1 -N 0 -m 5 -L
"rootfs" -O ^64bit /home/ldr/src/buildroot/output/images/rootfs.ext2 "120M"

--

so the mkfs.ext4 wants the file that will contain the filesystem to already
exist, which it doesnt, becuase it's removed one command earlier.

--

I was able to fix my issue by adding a touch in fs/ext2/ext2.mk.

Please see attachment.

But not sure if this is a correct way to fix my issue.

Hope it helps.

Thanks,

Leon

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