usr/src/test/zfs-tests/tests/stress/races/remove_file_while_remap.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) 2015 by Delphix. All rights reserved.
  19 #
  20
  21 . $STF_SUITE/include/libtest.shlib
  22
  23 #
  24 # DESCRIPTION:
  25 # While remapping all the files in a filesystem, ZFS should be able to
  26 # concurrently perform ZPL operations (remove files, truncate files, etc).
  27 #
  28 # STRATEGY:
  29 # 1. Create a ZFS filesystem
  30 # 2. Create many files.
  31 # 3. Continually remap the filesystem while performing ZPL operations.
  32 # 4. After the specified time duration, the system should not be panic.
  33 #
  34
  35 verify_runnable "both"
  36
  37 NUMFILES=10000
  38 NUMTHREADS=16
  39 TIMEOUT=500
  40
  41 log_assert "ZFS can handle ZPL operations during a remap."
  42
  43 default_setup_noexit "$DISKS"
  44 log_onexit default_cleanup_noexit
  45
  46 seq -f "$TESTDIR/file%g" $NUMFILES | xargs touch || \
  47     log_fail "Unable to create test files."
  48
  49 function remove_random_file
  50 {
  51         typeset target=$TESTDIR/file$((RANDOM % NUMFILES))
  52         if rm $target 2>/dev/null; then
  53                 touch $target || log_note "Failure to re-create $target."
  54         fi
  55 }
  56
  57 log_must touch $TESTDIR/continue
  58 for thread in $(seq $NUMTHREADS); do
  59         (while [[ -f $TESTDIR/continue ]]; do
  60                 remove_random_file
  61         done) &
  62 done
  63
  64 #
  65 # Remove the first disk to ensure there is something to remap.
  66 #
  67 log_must zpool remove $TESTPOOL ${DISKS/ */}
  68
  69 start=$(current_epoch)
  70 while (($(current_epoch) < start + TIMEOUT)); do
  71         zfs remap $TESTPOOL/$TESTFS || \
  72             log_fail "Failure to remap $TESTPOOL/$TESTFS"
  73 done
  74
  75 log_pass "ZFS handles race as expected."