forked from Mirrors/btrfs-progs
79 lines
1.6 KiB
Bash
79 lines
1.6 KiB
Bash
#!/bin/bash
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# test btrfs-image with a missing device (uses loop devices)
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#
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# - btrfs-image must not loop indefinetelly
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# - btrfs-image will expectedly fail to produce the dump
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source $TOP/tests/common
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check_prereq btrfs-show-super
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check_prereq btrfs-image
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check_prereq mkfs.btrfs
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check_prereq btrfs
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ndevs=2
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declare -a devs
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dev1=
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dev2=
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setup_root_helper
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# TODO: move the helpers to common
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prepare_devices()
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{
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for i in `seq $ndevs`; do
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touch img$i
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chmod a+rw img$i
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truncate -s0 img$i
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truncate -s2g img$i
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devs[$i]=`run_check_stdout $SUDO_HELPER losetup --find --show img$i`
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done
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}
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cleanup_devices()
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{
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for dev in ${devs[@]}; do
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run_mayfail $SUDO_HELPER losetup -d $dev
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done
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for i in `seq $ndevs`; do
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truncate -s0 img$i
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done
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run_check $SUDO_HELPER losetup --list
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}
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test_image_dump()
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{
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run_check $SUDO_HELPER $TOP/btrfs check $dev1
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# the output file will be deleted
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run_mayfail $SUDO_HELPER $TOP/btrfs-image $dev1 /tmp/test-img.dump
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}
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test_run()
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{
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run_check $SUDO_HELPER $TOP/mkfs.btrfs -f -d raid1 -m raid1 $dev1 $dev2
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# we need extents to trigger reading from all devices
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run_check $SUDO_HELPER mount $dev1 $TEST_MNT
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run_check $SUDO_HELPER dd if=/dev/zero of=$TEST_MNT/a bs=1M count=10
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run_check $SUDO_HELPER dd if=/dev/zero of=$TEST_MNT/b bs=4k count=1000 conv=sync
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run_check $SUDO_HELPER umount $TEST_MNT
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test_image_dump
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run_check btrfs fi show $dev1
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# create a degraded raid1 filesystem, check must succeed
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# btrfs-image must not loop
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run_mayfail wipefs -a $dev2
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run_check $SUDO_HELPER losetup -d $dev2
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run_check btrfs fi show $dev1
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test_image_dump
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}
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prepare_devices
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dev1=${devs[1]}
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dev2=${devs[2]}
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test_run
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cleanup_devices
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