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image.bbclass: check INITRAMFS_MAXSIZE 

Usually, the initramfs' maxsize can be 1/2 of ram size since modern
kernel uses tmpfs as initramfs by dafault, and tmpfs allocates 1/2 of
ram by default at boot time, which will be used to locate the initramfs.

Set INITRAMFS_MAXSIZE to 131072K (128M) by default (ram 256M), the
initramfs is small usually, for example, core-image-minimal-initramfs is
about 21M (uncompressed, 17M * 1.3) by default, but if the user add a
lot pkgs to initramfs, we can error and stop to let the user know ealier
rather than fail to boot (e.g., OOM-killer) at boot time.

Please see the bug for more info:
https://bugzilla.yoctoproject.org/show_bug.cgi?id=5963

[YOCTO #5963]

(From OE-Core rev: 155ba626b46bf71acde6c24402fce1682da53b90)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Robert Yang 2016-01-25 00:45:59 -08:00 committed by Richard Purdie
parent 962cc37c53
commit 8a2dfa1691
2 changed files with 19 additions and 1 deletions
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14
meta/classes/image.bbclass
View File

@ -423,6 +423,9 @@ def get_rootfs_size(d):
rootfs_req_size = int(d.getVar('IMAGE_ROOTFS_SIZE', True))
rootfs_extra_space = eval(d.getVar('IMAGE_ROOTFS_EXTRA_SPACE', True))
rootfs_maxsize = d.getVar('IMAGE_ROOTFS_MAXSIZE', True)
image_fstypes = d.getVar('IMAGE_FSTYPES', True) or ''
initramfs_fstypes = d.getVar('INITRAMFS_FSTYPES', True) or ''
initramfs_maxsize = d.getVar('INITRAMFS_MAXSIZE', True)
output = subprocess.check_output(['du', '-ks',
d.getVar('IMAGE_ROOTFS', True)])
@ -443,8 +446,17 @@ def get_rootfs_size(d):
if rootfs_maxsize:
rootfs_maxsize_int = int(rootfs_maxsize)
if base_size > rootfs_maxsize_int:
bb.fatal("The rootfs size %d(K) overrides the max size %d(K)" % \
bb.fatal("The rootfs size %d(K) overrides IMAGE_ROOTFS_MAXSIZE: %d(K)" % \
(base_size, rootfs_maxsize_int))
# Check the initramfs size against INITRAMFS_MAXSIZE (if set)
if image_fstypes == initramfs_fstypes != '' and initramfs_maxsize:
initramfs_maxsize_int = int(initramfs_maxsize)
if base_size > initramfs_maxsize_int:
bb.error("The initramfs size %d(K) overrides INITRAMFS_MAXSIZE: %d(K)" % \
(base_size, initramfs_maxsize_int))
bb.error("You can set INITRAMFS_MAXSIZE a larger value. Usually, it should")
bb.fatal("be less than 1/2 of ram size, or you may fail to boot it.\n")
return base_size
python set_image_size () {

6
meta/conf/bitbake.conf
View File

@ -712,7 +712,13 @@ require conf/sanity.conf
DL_DIR ?= "${TOPDIR}/downloads"
SSTATE_DIR ?= "${TOPDIR}/sstate-cache"
IMAGE_FSTYPES ?= "tar.gz"
INITRAMFS_FSTYPES ?= "cpio.gz"
# The maximum size in Kbytes for the generated initramfs image size.
# Usually, it should be less than 1/2 of ram size, or you may fail to
# boot it.
INITRAMFS_MAXSIZE ??= "131072"
DEFAULT_TASK_PROVIDER ?= "packagegroup-base"
MACHINE_TASK_PROVIDER ?= "${DEFAULT_TASK_PROVIDER}"