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support/tests: fix squashfs test

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Commit 3cf2782906 (support/testing/infra/emulator.py: update pre-built
kernels) bumped the default kernels used by the testing infra.

However, the newer armv7 kernel (at least) no longer has support for
lz4-compressed squashfs filesystems.

This breaks the squashfs test:

    Filesystem uses "lz4" compression. This is not supported
    List of all partitions:
    1f00          131072 mtdblock0
     (driver?)
    1f01           32768 mtdblock1
     (driver?)
    b300            2048 mmcblk0
     driver: mmcblk
    No filesystem could mount root, tried:
     squashfs

    Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,0)

Updating the kernel again is a little bit cumbersome, while fixing the
actual test is relatively trivial, so this is what we do: we switch
over to lzo, which is supported by the new kernel:

    # zcat /proc/config.gz |grep SQUA
    CONFIG_SQUASHFS=y
    CONFIG_SQUASHFS_ZLIB=y
    # CONFIG_SQUASHFS_LZ4 is not set
    CONFIG_SQUASHFS_LZO=y
    # CONFIG_SQUASHFS_XZ is not set

While at it, also drop the superfluous line disabling gzip compression:
it is part of a choice, so enabling one (lzo here) forcibly disables the
others (of which gzip).

Fixes: 3cf2782906

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
This commit is contained in:
Yann E. MORIN 2021-06-27 08:53:50 +02:00
parent 11fffded3c
commit e7f0408f49
1 changed files with 2 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
support/testing/tests/fs/test_squashfs.py
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@ -7,8 +7,7 @@ class TestSquashfs(infra.basetest.BRTest):
config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
"""
BR2_TARGET_ROOTFS_SQUASHFS=y
# BR2_TARGET_ROOTFS_SQUASHFS4_GZIP is not set
BR2_TARGET_ROOTFS_SQUASHFS4_LZ4=y
BR2_TARGET_ROOTFS_SQUASHFS4_LZO=y
# BR2_TARGET_ROOTFS_TAR is not set
"""
@ -18,7 +17,7 @@ class TestSquashfs(infra.basetest.BRTest):
out = out.splitlines()
self.assertEqual(out[0],
"Found a valid SQUASHFS 4:0 superblock on images/rootfs.squashfs.")
self.assertEqual(out[3], "Compression lz4")
self.assertEqual(out[3], "Compression lzo")
img = os.path.join(self.builddir, "images", "rootfs.squashfs")
infra.img_round_power2(img)