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Fix ENOSPC for extended quota #15312

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Sep 28, 2023
Merged

Fix ENOSPC for extended quota #15312

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22 changes: 8 additions & 14 deletions module/zfs/dsl_dir.c
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@
* Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
* Copyright (c) 2016 Actifio, Inc. All rights reserved.
* Copyright (c) 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
* Copyright (c) 2023 Hewlett Packard Enterprise Development LP.
*/

#include <sys/dmu.h>
Expand Down Expand Up @@ -1358,30 +1359,23 @@ dsl_dir_tempreserve_impl(dsl_dir_t *dd, uint64_t asize, boolean_t netfree,
ext_quota = 0;

if (used_on_disk >= quota) {
if (retval == ENOSPC && (used_on_disk - quota) <
dsl_pool_deferred_space(dd->dd_pool)) {
retval = SET_ERROR(ERESTART);
}
/* Quota exceeded */
mutex_exit(&dd->dd_lock);
DMU_TX_STAT_BUMP(dmu_tx_quota);
return (retval);
} else if (used_on_disk + est_inflight >= quota + ext_quota) {
if (est_inflight > 0 || used_on_disk < quota) {
retval = SET_ERROR(ERESTART);
} else {
ASSERT3U(used_on_disk, >=, quota);

if (retval == ENOSPC && (used_on_disk - quota) <
dsl_pool_deferred_space(dd->dd_pool)) {
retval = SET_ERROR(ERESTART);
}
}

dprintf_dd(dd, "failing: used=%lluK inflight = %lluK "
"quota=%lluK tr=%lluK err=%d\n",
"quota=%lluK tr=%lluK\n",
(u_longlong_t)used_on_disk>>10,
(u_longlong_t)est_inflight>>10,
(u_longlong_t)quota>>10, (u_longlong_t)asize>>10, retval);
(u_longlong_t)quota>>10, (u_longlong_t)asize>>10);
mutex_exit(&dd->dd_lock);
DMU_TX_STAT_BUMP(dmu_tx_quota);
return (retval);
return (SET_ERROR(ERESTART));
}

/* We need to up our estimated delta before dropping dd_lock */
Expand Down
12 changes: 11 additions & 1 deletion tests/zfs-tests/tests/functional/no_space/enospc_rm.ksh
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@
#
# Copyright (c) 2014, 2016 by Delphix. All rights reserved.
# Copyright (c) 2022 by Lawrence Livermore National Security, LLC.
# Copyright (c) 2023 Hewlett Packard Enterprise Development LP.
#

. $STF_SUITE/include/libtest.shlib
Expand Down Expand Up @@ -51,11 +52,20 @@ log_must zfs create $TESTPOOL/$TESTFS
log_must zfs set mountpoint=$TESTDIR $TESTPOOL/$TESTFS
log_must zfs set compression=off $TESTPOOL/$TESTFS

log_note "Writing files until ENOSPC."
log_note "Writing Big(1G) files until ENOSPC."
log_mustnot_expect "No space left on device" fio --name=test \
--fallocate=none --rw=write --bs=1M --size=1G --numjobs=4 \
--sync=1 --directory=$TESTDIR/ --group_reporting

log_must rm $TESTDIR/test.*
log_must test -z "$(ls -A $TESTDIR)"
sync_pool $TESTPOOL true

log_note "Writing small(10M) files until ENOSPC."
log_mustnot_expect "No space left on device" fio --name=test \
--fallocate=none --rw=write --bs=1M --size=10M --numjobs=200 \
--sync=1 --directory=$TESTDIR/ --group_reporting

log_must rm $TESTDIR/test.*
log_must test -z "$(ls -A $TESTDIR)"

Expand Down
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