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https://github.com/torvalds/linux
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a20ffa7d9f
Add some debug knobs so that we can control the leaf and node block slack when rebuilding btrees. For developers, it might be useful to construct btrees of various heights by crafting a filesystem with a certain number of records and then using repair+knobs to rebuild the index with a certain shape. Practically speaking, you'd only ever do that for extreme stress testing of the runtime code or the btree generator. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*/
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#include "xfs.h"
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#include "xfs_error.h"
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/*
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* Tunable XFS parameters. xfs_params is required even when CONFIG_SYSCTL=n,
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* other XFS code uses these values. Times are measured in centisecs (i.e.
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* 100ths of a second) with the exception of blockgc_timer, which is measured
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* in seconds.
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*/
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xfs_param_t xfs_params = {
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/* MIN DFLT MAX */
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.sgid_inherit = { 0, 0, 1 },
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.symlink_mode = { 0, 0, 1 },
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.panic_mask = { 0, 0, XFS_PTAG_MASK},
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.error_level = { 0, 3, 11 },
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.syncd_timer = { 1*100, 30*100, 7200*100},
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.stats_clear = { 0, 0, 1 },
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.inherit_sync = { 0, 1, 1 },
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.inherit_nodump = { 0, 1, 1 },
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.inherit_noatim = { 0, 1, 1 },
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.xfs_buf_timer = { 100/2, 1*100, 30*100 },
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.xfs_buf_age = { 1*100, 15*100, 7200*100},
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.inherit_nosym = { 0, 0, 1 },
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.rotorstep = { 1, 1, 255 },
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.inherit_nodfrg = { 0, 1, 1 },
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.fstrm_timer = { 1, 30*100, 3600*100},
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.blockgc_timer = { 1, 300, 3600*24},
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};
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struct xfs_globals xfs_globals = {
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.log_recovery_delay = 0, /* no delay by default */
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.mount_delay = 0, /* no delay by default */
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#ifdef XFS_ASSERT_FATAL
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.bug_on_assert = true, /* assert failures BUG() */
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#else
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.bug_on_assert = false, /* assert failures WARN() */
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#endif
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#ifdef DEBUG
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.pwork_threads = -1, /* automatic thread detection */
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.larp = false, /* log attribute replay */
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#endif
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/*
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* Leave this many record slots empty when bulk loading btrees. By
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* default we load new btree leaf blocks 75% full.
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*/
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.bload_leaf_slack = -1,
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/*
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* Leave this many key/ptr slots empty when bulk loading btrees. By
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* default we load new btree node blocks 75% full.
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*/
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.bload_node_slack = -1,
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};
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