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|
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2011 Oracle All Rights Reserved.
#
# FS QA Test No. btrfs/002
#
# Extented btrfs snapshot test cases
#
. ./common/preamble
_begin_fstest auto snapshot
. ./common/filter
_supported_fs btrfs
_require_scratch
_scratch_mkfs > /dev/null 2>&1 || _fail "mkfs failed"
_scratch_mount
# Create and save sha256sum
# arg1 FS to generate sha256
# arg2 File name to save the sha256 output
_save_checksum()
{
local i=0
>$2
cd $1
for i in `find . -type f`; do sha256sum $i >> $2; done
cd $OLDPWD
}
# Verify the sha256sum for a FS
# arg1 FS to be tested
# arg2 sha256 file
_verify_checksum()
{
cd $1
[ -f $2 ] || _fail "checksum file $2 not found"
sha256sum -c $2 | grep "FAILED"
cd $OLDPWD
}
# Create a snapshot
# arg1 dest dir
# Return snapshot name in the SNAPNAME
_create_snap()
{
local x
[ -d $1 ] || _fail "Destination dir $1 not present"
SNAPNAME=`mktemp -u $SCRATCH_MNT/snap.XXXXXX`
$BTRFS_UTIL_PROG subvolume snapshot $1 $SNAPNAME > /dev/null || _fail "snapshot create failed"
}
# Reads and writes new data but does not allocate new blocks
# arg1 FS to be modified
_read_modify_write()
{
local i
local FSIZE
for i in `find $1 -type f`
do
FSIZE=`stat -t $i | cut -d" " -f2`
dd if=$i of=/dev/null obs=$FSIZE count=1 status=noxfer 2>/dev/null &
_ddt of=$i obs=$FSIZE count=1 status=noxfer 2>/dev/null &
done
wait $!
}
# Fills the allocated blocks
# arg1 FS in question
_fill_blk()
{
local FSIZE
local BLKS
local NBLK
local FALLOC
local WS
for i in `find /$1 -type f`
do
FSIZE=`stat -t $i | cut -d" " -f2`
BLKS=`stat -c "%B" $i`
NBLK=`stat -c "%b" $i`
FALLOC=$(($BLKS * $NBLK))
WS=$(($FALLOC - $FSIZE))
_ddt of=$i oseek=$FSIZE obs=$WS count=1 status=noxfer 2>/dev/null &
done
wait $!
}
# Append a random size to the files
# arg1 : FS in question
_append_file()
{
local FSIZE
local X
local N
local i
N=0
for i in `find $1 -type f`
do
if [ $N == 0 ]; then
X=$i
FSIZE=`stat -t $X | cut -d" " -f2`
dd if=$X of=$X seek=1 bs=$FSIZE obs=$FSIZE count=1 status=noxfer 2>/dev/null &
N=$(($N+1))
continue
fi
FSIZE=`stat -t $i | cut -d" " -f2`
dd if=$X of=$i seek=1 bs=$FSIZE obs=$FSIZE count=1 status=noxfer 2>/dev/null &
X=$i
done
wait $!
}
# sv1 - is just a name nothing spl
firstvol="$SCRATCH_MNT/sv1"
$BTRFS_UTIL_PROG subvolume create $firstvol > /dev/null || _fail "btrfs subvolume create $firstvol failed"
dirp=`mktemp -duq $firstvol/dir.XXXXXX`
_populate_fs -n 1 -f 20 -d 10 -r $dirp -s 10 -c
SNAPNAME=0
_create_snap $firstvol
_save_checksum $firstvol $tmp.sv1.sum
_verify_checksum $SNAPNAME $tmp.sv1.sum
#Append1 the files
_fill_blk $SNAPNAME
_verify_checksum $firstvol $tmp.sv1.sum
#Append2 the files
_append_file $SNAPNAME
_verify_checksum $firstvol $tmp.sv1.sum
#read modify write
_read_modify_write $SNAPNAME
_verify_checksum $firstvol $tmp.sv1.sum
#nested snapshot test
src_vol=$firstvol
for i in `seq 1 7`; do
SNAPNAME=0
_create_snap $src_vol
_verify_checksum $SNAPNAME $tmp.sv1.sum
src_vol=$SNAPNAME
done
# file delete test
SNAPNAME=0
_create_snap $firstvol
tname=`echo $SNAPNAME | rev | cut -d"/" -f1 | rev`
_save_checksum $SNAPNAME $tmp.$tname.sum
\rm -rf $firstvol/*
_verify_checksum $SNAPNAME $tmp.$tname.sum
_scratch_unmount || _fail "unmount failed"
echo "Silence is golden"
status=0; exit
|
