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ceph/qa/workunits/rbd/import_export.sh
Jason Dillaman a5d0d0ca08 qa/workunits: partial revert of commit 5b486d9 
Testing for disk usage and diff extents for a sparsely written
imported RBD image cannot generically be handled across different
OSD object stores and RBD image features.

The only alternatives would include grepping the rbd CLI
debug log for specific invocations of aio_write or mocking
the rbd CLI for unit testing.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
2017-04-07 21:06:37 -04:00

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#!/bin/sh -ex
# returns data pool for a given image
get_image_data_pool () {
image=$1
data_pool=$(rbd info $image | grep "data_pool: " | awk -F':' '{ print $NF }')
if [ -z $data_pool ]; then
data_pool='rbd'
fi
echo $data_pool
}
# return list of object numbers populated in image
objects () {
image=$1
prefix=$(rbd info $image | grep block_name_prefix | awk '{print $NF;}')
# strip off prefix and leading zeros from objects; sort, although
# it doesn't necessarily make sense as they're hex, at least it makes
# the list repeatable and comparable
objects=$(rados ls -p $(get_image_data_pool $image) | grep $prefix | \
sed -e 's/'$prefix'\.//' -e 's/^0*\([0-9a-f]\)/\1/' | sort -u)
echo $objects
}
# return false if either files don't compare or their ondisk
# sizes don't compare
compare_files_and_ondisk_sizes () {
cmp -l $1 $2 || return 1
origsize=$(stat $1 --format %b)
exportsize=$(stat $2 --format %b)
difference=$(($exportsize - $origsize))
difference=${difference#-} # absolute value
test $difference -ge 0 -a $difference -lt 4096
}
TMPDIR=/tmp/rbd_import_export_$$
rm -rf $TMPDIR
mkdir $TMPDIR
trap "rm -rf $TMPDIR" INT TERM EXIT
# cannot import a dir
mkdir foo.$$
rbd import foo.$$ foo.dir && exit 1 || true # should fail
rmdir foo.$$
# create a sparse file
dd if=/bin/sh of=${TMPDIR}/img bs=1k count=1 seek=10
dd if=/bin/dd of=${TMPDIR}/img bs=1k count=10 seek=100
dd if=/bin/rm of=${TMPDIR}/img bs=1k count=100 seek=1000
dd if=/bin/ls of=${TMPDIR}/img bs=1k seek=10000
dd if=/bin/ln of=${TMPDIR}/img bs=1k seek=100000
dd if=/bin/grep of=${TMPDIR}/img bs=1k seek=1000000
rbd rm testimg || true
rbd import $RBD_CREATE_ARGS ${TMPDIR}/img testimg
rbd export testimg ${TMPDIR}/img2
rbd export testimg - > ${TMPDIR}/img3
rbd rm testimg
cmp ${TMPDIR}/img ${TMPDIR}/img2
cmp ${TMPDIR}/img ${TMPDIR}/img3
rm ${TMPDIR}/img2 ${TMPDIR}/img3
# try again, importing from stdin
rbd import $RBD_CREATE_ARGS - testimg < ${TMPDIR}/img
rbd export testimg ${TMPDIR}/img2
rbd export testimg - > ${TMPDIR}/img3
rbd rm testimg
cmp ${TMPDIR}/img ${TMPDIR}/img2
cmp ${TMPDIR}/img ${TMPDIR}/img3
rm ${TMPDIR}/img ${TMPDIR}/img2 ${TMPDIR}/img3
# try with --export-format for snapshots
dd if=/bin/dd of=${TMPDIR}/img bs=1k count=10 seek=100
rbd import $RBD_CREATE_ARGS ${TMPDIR}/img testimg
rbd snap create testimg@snap
rbd export --export-format 2 testimg ${TMPDIR}/img_v2
rbd import --export-format 2 ${TMPDIR}/img_v2 testimg_import
rbd info testimg_import
rbd info testimg_import@snap
# compare the contents between testimg and testimg_import
rbd export testimg_import ${TMPDIR}/img_import
compare_files_and_ondisk_sizes ${TMPDIR}/img ${TMPDIR}/img_import
rbd export testimg@snap ${TMPDIR}/img_snap
rbd export testimg_import@snap ${TMPDIR}/img_snap_import
compare_files_and_ondisk_sizes ${TMPDIR}/img_snap ${TMPDIR}/img_snap_import
rm ${TMPDIR}/img_v2
rm ${TMPDIR}/img_import
rm ${TMPDIR}/img_snap
rm ${TMPDIR}/img_snap_import
rbd snap rm testimg_import@snap
rbd remove testimg_import
rbd snap rm testimg@snap
rbd rm testimg
# order
rbd import --order 20 ${TMPDIR}/img testimg
rbd export --export-format 2 testimg ${TMPDIR}/img_v2
rbd import --export-format 2 ${TMPDIR}/img_v2 testimg_import
rbd info testimg_import|grep order|awk '{print $2}'|grep 20
rm ${TMPDIR}/img_v2
rbd remove testimg_import
rbd remove testimg
# features
rbd import --image-feature layering ${TMPDIR}/img testimg
FEATURES_BEFORE=`rbd info testimg|grep features`
rbd export --export-format 2 testimg ${TMPDIR}/img_v2
rbd import --export-format 2 ${TMPDIR}/img_v2 testimg_import
FEATURES_AFTER=`rbd info testimg_import|grep features`
if [ "$FEATURES_BEFORE" != "$FEATURES_AFTER" ]; then
false
fi
rm ${TMPDIR}/img_v2
rbd remove testimg_import
rbd remove testimg
# stripe
rbd import --stripe-count 1000 --stripe-unit 4096 ${TMPDIR}/img testimg
rbd export --export-format 2 testimg ${TMPDIR}/img_v2
rbd import --export-format 2 ${TMPDIR}/img_v2 testimg_import
rbd info testimg_import|grep "stripe unit"|awk '{print $3}'|grep 4096
rbd info testimg_import|grep "stripe count"|awk '{print $3}'|grep 1000
rm ${TMPDIR}/img_v2
rbd remove testimg_import
rbd remove testimg
tiered=0
if ceph osd dump | grep ^pool | grep "'rbd'" | grep tier; then
tiered=1
fi
# create specifically sparse files
# 1 1M block of sparse, 1 1M block of random
dd if=/dev/urandom bs=1M seek=1 count=1 of=${TMPDIR}/sparse1
# 1 1M block of random, 1 1M block of sparse
dd if=/dev/urandom bs=1M count=1 of=${TMPDIR}/sparse2; truncate ${TMPDIR}/sparse2 -s 2M
# 1M-block images; validate resulting blocks
# 1M sparse, 1M data
rbd rm sparse1 || true
rbd import $RBD_CREATE_ARGS --order 20 ${TMPDIR}/sparse1
rbd ls -l | grep sparse1 | grep -i '2048k'
[ $tiered -eq 1 -o "$(objects sparse1)" = '1' ]
# export, compare contents and on-disk size
rbd export sparse1 ${TMPDIR}/sparse1.out
compare_files_and_ondisk_sizes ${TMPDIR}/sparse1 ${TMPDIR}/sparse1.out
rm ${TMPDIR}/sparse1.out
rbd rm sparse1
# 1M data, 1M sparse
rbd rm sparse2 || true
rbd import $RBD_CREATE_ARGS --order 20 ${TMPDIR}/sparse2
rbd ls -l | grep sparse2 | grep -i '2048k'
[ $tiered -eq 1 -o "$(objects sparse2)" = '0' ]
rbd export sparse2 ${TMPDIR}/sparse2.out
compare_files_and_ondisk_sizes ${TMPDIR}/sparse2 ${TMPDIR}/sparse2.out
rm ${TMPDIR}/sparse2.out
rbd rm sparse2
# extend sparse1 to 10 1M blocks, sparse at the end
truncate ${TMPDIR}/sparse1 -s 10M
# import from stdin just for fun, verify still sparse
rbd import $RBD_CREATE_ARGS --order 20 - sparse1 < ${TMPDIR}/sparse1
rbd ls -l | grep sparse1 | grep -i '10240k'
[ $tiered -eq 1 -o "$(objects sparse1)" = '1' ]
rbd export sparse1 ${TMPDIR}/sparse1.out
compare_files_and_ondisk_sizes ${TMPDIR}/sparse1 ${TMPDIR}/sparse1.out
rm ${TMPDIR}/sparse1.out
rbd rm sparse1
# extend sparse2 to 4M total with two more nonsparse megs
dd if=/dev/urandom bs=2M count=1 of=${TMPDIR}/sparse2 oflag=append conv=notrunc
# again from stding
rbd import $RBD_CREATE_ARGS --order 20 - sparse2 < ${TMPDIR}/sparse2
rbd ls -l | grep sparse2 | grep -i '4096k'
[ $tiered -eq 1 -o "$(objects sparse2)" = '0 2 3' ]
rbd export sparse2 ${TMPDIR}/sparse2.out
compare_files_and_ondisk_sizes ${TMPDIR}/sparse2 ${TMPDIR}/sparse2.out
rm ${TMPDIR}/sparse2.out
rbd rm sparse2
# zeros import to a sparse image. Note: all zeros currently
# doesn't work right now due to the way we handle 'empty' fiemaps;
# the image ends up zero-filled.
echo "partially-sparse file imports to partially-sparse image"
rbd import $RBD_CREATE_ARGS --order 20 ${TMPDIR}/sparse1 sparse
[ $tiered -eq 1 -o "$(objects sparse)" = '1' ]
rbd rm sparse
echo "zeros import through stdin to sparse image"
# stdin
dd if=/dev/zero bs=1M count=4 | rbd import $RBD_CREATE_ARGS - sparse
[ $tiered -eq 1 -o "$(objects sparse)" = '' ]
rbd rm sparse
echo "zeros export to sparse file"
# Must be tricky to make image "by hand" ; import won't create a zero image
rbd create $RBD_CREATE_ARGS sparse --size 4
prefix=$(rbd info sparse | grep block_name_prefix | awk '{print $NF;}')
# drop in 0 object directly
dd if=/dev/zero bs=4M count=1 | rados -p $(get_image_data_pool sparse) \
put ${prefix}.000000000000 -
[ $tiered -eq 1 -o "$(objects sparse)" = '0' ]
# 1 object full of zeros; export should still create 0-disk-usage file
rm ${TMPDIR}/sparse || true
rbd export sparse ${TMPDIR}/sparse
[ $(stat ${TMPDIR}/sparse --format=%b) = '0' ]
rbd rm sparse
rm ${TMPDIR}/sparse ${TMPDIR}/sparse1 ${TMPDIR}/sparse2 ${TMPDIR}/sparse3 || true
echo OK
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