tests/zfs-tests/tests/functional/no_space/enospc_df.ksh

   1 #!/bin/ksh -p
   2 #
   3 # CDDL HEADER START
   4 #
   5 # This file and its contents are supplied under the terms of the
   6 # Common Development and Distribution License ("CDDL"), version 1.0.
   7 # You may only use this file in accordance with the terms of version
   8 # 1.0 of the CDDL.
   9 #
  10 # A full copy of the text of the CDDL should have accompanied this
  11 # source.  A copy of the CDDL is also available via the Internet at
  12 # http://www.illumos.org/license/CDDL.
  13 #
  14 # CDDL HEADER END
  15 #
  16
  17 #
  18 # Copyright (c) 2014, 2016 by Delphix. All rights reserved.
  19 # Copyright (c) 2019 by Datto Inc. All rights reserved.
  20 #
  21
  22 . $STF_SUITE/include/libtest.shlib
  23 . $STF_SUITE/tests/functional/no_space/enospc.cfg
  24
  25 #
  26 # DESCRIPTION:
  27 # After filling a filesystem, the df command produces the
  28 # expected result against the pool root filesystem.
  29 #
  30 # STRATEGY:
  31 # 1. Write a file until the child file system is full.
  32 # 2. Ensure that ENOSPC is returned.
  33 # 3. Unmount the child file system.
  34 # 4. Issue df -h command.
  35 # 5. Ensure pool root filesystem is included (issue #8253).
  36 # 6. Issue df -h <filesystem>.
  37 # 7. Ensure size and used are non-zero.
  38 #
  39
  40 verify_runnable "both"
  41
  42 log_onexit default_cleanup_noexit
  43
  44 log_assert "Correct df output is returned when file system is full."
  45
  46 default_setup_noexit $DISK_SMALL
  47 log_must zfs set compression=off $TESTPOOL/$TESTFS
  48
  49 log_note "Writing file: $TESTFILE0 until ENOSPC."
  50 file_write -o create -f $TESTDIR/$TESTFILE0 -b $BLOCKSZ \
  51     -c $NUM_WRITES -d $DATA
  52 ret=$?
  53
  54 (( $ret != $ENOSPC )) && \
  55     log_fail "$TESTFILE0 returned: $ret rather than ENOSPC."
  56
  57 log_must zfs umount $TESTPOOL/$TESTFS
  58
  59 # Ensure the pool root filesystem shows in df output.
  60 # If the pool was full (available == 0) and the pool
  61 # root filesytem had very little in it (used < 1 block),
  62 # the size reported to df was zero (issue #8253) and
  63 # df skipped the filesystem in its output.
  64 log_must eval "df -h | grep $TESTPOOL"
  65
  66 # Confirm df size and used are non-zero.
  67 size=$(df -h /$TESTPOOL | grep $TESTPOOL | awk '{print $2}')
  68 used=$(df -h /$TESTPOOL | grep $TESTPOOL | awk '{print $3}')
  69 if [[ "$size" = "0" ]] || [[ "$used" = "0" ]]
  70 then
  71         log_fail "df failed with size $size and used $used."
  72 fi
  73 log_pass "df after ENOSPC works as expected."