[OE-core] [PATCH 1/1] wic: Honor --size for --source partititions
Tom Zanussi
tom.zanussi at linux.intel.com
Fri Feb 7 22:19:28 UTC 2014
Instead of simply creating partitions large enough to contain the
contents of a --source partition (and adding a pre-specified amount of
padding), use the --size used in the partition .wks statement.
If --size isn't used, or is smaller than the actual --source size,
retain the current behavior.
Signed-off-by: Tom Zanussi <tom.zanussi at linux.intel.com>
---
.../lib/mic/kickstart/custom_commands/partition.py | 57 +++++++++++++++++++---
scripts/lib/mic/plugins/source/bootimg-efi.py | 10 +++-
scripts/lib/mic/plugins/source/bootimg-pcbios.py | 10 +++-
scripts/lib/mic/utils/oe/misc.py | 1 +
4 files changed, 68 insertions(+), 10 deletions(-)
diff --git a/scripts/lib/mic/kickstart/custom_commands/partition.py b/scripts/lib/mic/kickstart/custom_commands/partition.py
index 4974a87..91d751e 100644
--- a/scripts/lib/mic/kickstart/custom_commands/partition.py
+++ b/scripts/lib/mic/kickstart/custom_commands/partition.py
@@ -56,6 +56,12 @@ class Wic_PartData(Mic_PartData):
return retval
+ def get_size(self):
+ """
+ Accessor for partition size, 0 or --size before set_size().
+ """
+ return self.size
+
def set_size(self, size):
"""
Accessor for actual partition size, which must be set by source
@@ -70,6 +76,29 @@ class Wic_PartData(Mic_PartData):
"""
self.source_file = source_file
+ def get_extra_block_count(self, current_blocks):
+ """
+ The --size param is reflected in self.size (in MB), and we already
+ have current_blocks (1k) blocks, calculate and return the
+ number of (1k) blocks we need to add to get to --size, 0 if
+ we're already there or beyond.
+ """
+ msger.debug("Requested partition size for %s: %d" % \
+ (self.mountpoint, self.size))
+
+ if not self.size:
+ return 0
+
+ requested_blocks = self.size * 1024
+
+ msger.debug("Requested blocks %d, current_blocks %d" % \
+ (requested_blocks, current_blocks))
+
+ if requested_blocks > current_blocks:
+ return requested_blocks - current_blocks
+ else:
+ return 0
+
def prepare(self, cr, cr_workdir, oe_builddir, rootfs_dir, bootimg_dir,
kernel_dir, native_sysroot):
"""
@@ -147,16 +176,22 @@ class Wic_PartData(Mic_PartData):
"""
populate_script = "%s/usr/bin/populate-extfs.sh" % native_sysroot
- image_extra_space = 10240
-
image_rootfs = rootfs_dir
rootfs = "%s/rootfs.%s" % (cr_workdir, self.fstype)
du_cmd = "du -ks %s" % image_rootfs
rc, out = exec_cmd(du_cmd)
- actual_rootfs_size = out.split()[0]
+ actual_rootfs_size = int(out.split()[0])
+
+ extra_blocks = self.get_extra_block_count(actual_rootfs_size)
+
+ if extra_blocks < IMAGE_EXTRA_SPACE:
+ extra_blocks = IMAGE_EXTRA_SPACE
+
+ rootfs_size = actual_rootfs_size + extra_blocks
- rootfs_size = int(actual_rootfs_size) + image_extra_space
+ msger.debug("Added %d extra blocks to %s to get to %d total blocks" % \
+ (extra_blocks, self.mountpoint, rootfs_size))
dd_cmd = "dd if=/dev/zero of=%s bs=1024 seek=%d count=0 bs=1k" % \
(rootfs, rootfs_size)
@@ -187,16 +222,22 @@ class Wic_PartData(Mic_PartData):
Currently handles ext2/3/4 and btrfs.
"""
- image_extra_space = 10240
-
image_rootfs = rootfs_dir
rootfs = "%s/rootfs.%s" % (cr_workdir, self.fstype)
du_cmd = "du -ks %s" % image_rootfs
rc, out = exec_cmd(du_cmd)
- actual_rootfs_size = out.split()[0]
+ actual_rootfs_size = int(out.split()[0])
+
+ extra_blocks = self.get_extra_block_count(actual_rootfs_size)
+
+ if extra_blocks < IMAGE_EXTRA_SPACE:
+ extra_blocks = IMAGE_EXTRA_SPACE
+
+ rootfs_size = actual_rootfs_size + extra_blocks
- rootfs_size = int(actual_rootfs_size) + image_extra_space
+ msger.debug("Added %d extra blocks to %s to get to %d total blocks" % \
+ (extra_blocks, self.mountpoint, rootfs_size))
dd_cmd = "dd if=/dev/zero of=%s bs=1024 seek=%d count=0 bs=1k" % \
(rootfs, rootfs_size)
diff --git a/scripts/lib/mic/plugins/source/bootimg-efi.py b/scripts/lib/mic/plugins/source/bootimg-efi.py
index 3e0997b..1974b06 100644
--- a/scripts/lib/mic/plugins/source/bootimg-efi.py
+++ b/scripts/lib/mic/plugins/source/bootimg-efi.py
@@ -131,7 +131,15 @@ class BootimgEFIPlugin(SourcePlugin):
rc, out = exec_cmd(du_cmd)
blocks = int(out.split()[0])
- blocks += BOOTDD_EXTRA_SPACE
+ extra_blocks = part.get_extra_block_count(blocks)
+
+ if extra_blocks < BOOTDD_EXTRA_SPACE:
+ extra_blocks = BOOTDD_EXTRA_SPACE
+
+ blocks += extra_blocks
+
+ msger.debug("Added %d extra blocks to %s to get to %d total blocks" % \
+ (extra_blocks, part.mountpoint, blocks))
# Ensure total sectors is an integral number of sectors per
# track or mcopy will complain. Sectors are 512 bytes, and we
diff --git a/scripts/lib/mic/plugins/source/bootimg-pcbios.py b/scripts/lib/mic/plugins/source/bootimg-pcbios.py
index 3cd446f..fad150f 100644
--- a/scripts/lib/mic/plugins/source/bootimg-pcbios.py
+++ b/scripts/lib/mic/plugins/source/bootimg-pcbios.py
@@ -154,7 +154,15 @@ class BootimgPcbiosPlugin(SourcePlugin):
rc, out = exec_cmd(du_cmd)
blocks = int(out.split()[0])
- blocks += BOOTDD_EXTRA_SPACE
+ extra_blocks = part.get_extra_block_count(blocks)
+
+ if extra_blocks < BOOTDD_EXTRA_SPACE:
+ extra_blocks = BOOTDD_EXTRA_SPACE
+
+ blocks += extra_blocks
+
+ msger.debug("Added %d extra blocks to %s to get to %d total blocks" % \
+ (extra_blocks, part.mountpoint, blocks))
# Ensure total sectors is an integral number of sectors per
# track or mcopy will complain. Sectors are 512 bytes, and we
diff --git a/scripts/lib/mic/utils/oe/misc.py b/scripts/lib/mic/utils/oe/misc.py
index 77dfe03..6b01955 100644
--- a/scripts/lib/mic/utils/oe/misc.py
+++ b/scripts/lib/mic/utils/oe/misc.py
@@ -108,6 +108,7 @@ def add_wks_var(key, val):
wks_vars[key] = val
BOOTDD_EXTRA_SPACE = 16384
+IMAGE_EXTRA_SPACE = 10240
__bitbake_env_lines = ""
--
1.8.3.1
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