##/bin/bash # SPDX-License-Identifier: GPL-2.0 # Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved. # # Functions useful for xfs_repair tests _zero_position() { value=$1 struct="$2" # set values for off/len variables provided by db eval `xfs_db -r -c "$struct" -c stack $SCRATCH_DEV | perl -ne ' if (/byte offset (\d+), length (\d+)/) { print "offset=$1\nlength=$2\n"; exit }'` if [ -z "$offset" -o -z "$length" ]; then echo "cannot calculate offset ($offset) or length ($length)" exit fi length=`expr $length / 512` $here/src/devzero -v $value -b 1 -n $length -o $offset $SCRATCH_DEV \ | perl -npe 's/\d\.\d\dKb/X.XXKb/g' } _filter_repair() { perl -ne ' # for sb /- agno = / && next; # remove each AG line (variable number) s/(pointer to) (\d+)/\1 INO/; # Changed inode output in 5.5.0 s/sb root inode value /sb root inode /; s/realtime bitmap inode value /realtime bitmap inode /; s/realtime summary inode value /realtime summary inode /; s/ino pointer to /inode pointer to /; # s/(sb root inode) (\d+)( \(NULLFSINO\))?/\1 INO/; s/(realtime bitmap inode) (\d+)( \(NULLFSINO\))?/\1 INO/; s/(realtime summary inode) (\d+)( \(NULLFSINO\))?/\1 INO/; s/(inconsistent with calculated value) (\d+)/\1 INO/; s/\.+(found)/\1/g; # remove "searching" output # for agf + agi s/(bad length -{0,1}\d+ for ag. 0, should be) (\d+)/\1 LENGTH/; s/(bad length # -{0,1}\d+ for ag. 0, should be) (\d+)/\1 LENGTH/; s/(bad agbno) (\d+)/\1 AGBNO/g; s/(max =) (\d+)/\1 MAX/g; # for root inos s/(on inode) (\d+)/\1 INO/g; s/(imap claims a free inode) (\d+)/\1 INO/; s/(imap claims in-use inode) (\d+)/\1 INO/; s/(cleared root inode) (\d+)/\1 INO/; s/(resetting inode) (\d+)/\1 INO/; s/(disconnected dir inode) (\d+)/\1 INO/; # for log s/internal log/ log/g; s/external log on \S+/ log/g; # realtime subvol - remove this whole line if it appears s/ - generate realtime summary info and bitmap...\n//g; # # new xfs repair output filters # s/\s+- creating \d+ worker thread\(s\)\n//g; s/\s+- reporting progress in intervals of \d+ minutes\n//g; s/\s+- \d+:\d\d:\d\d:.*\n//g; # 3.1.0 extra accounting output /^agf_/ && next; # remove agf counts /^agi_/ && next; # remove agi counts /^sb_/ && next; # remove sb counts /^agi unlinked/ && next; # remove agi unlinked bucket warning # crc enabled filesystem output /XFS_CORRUPTION_ERROR/ && next; /^bad uuid/ && next; /^Metadata corruption detected/ && next; /^Metadata CRC error detected/ && next; /^agfl has bad CRC/ && next; /^bad CRC for inode/ && next; # finobt enabled filesystem output s/(inode chunk) (\d+)\/(\d+)/AGNO\/INO/; # sunit/swidth reset messages s/^(Note - .*) were copied.*/\1 fields have been reset./; s/^(Please) reset (with .*) if necessary/\1 set \2/; # remove new unlinked inode test /^bad next_unlinked/ && next; # And make them generic so we dont depend on geometry s/(stripe unit) \(.*\) (and width) \(.*\)/\1 (SU) \2 (SW)/; # corrupt sb messages s/(superblock) (\d+)/\1 AGNO/; s/(AG \#)(\d+)/\1AGNO/; s/(reset bad sb for ag) (\d+)/\1 AGNO/; s/(unknown block state, ag )(\d+)(, block )(\d+)/\1AGNO\3AGBNO/; /^Note - quota info will be regenerated on next quota mount.$/ && next; print;' } # Filter out unknown block state messages that appear when rmap is enabled # and we erase a btree root pointer (such that repair never finds the # tree and fails to reconcile the metadata reverse mappings against the # metadata). _filter_repair_lostblocks() { _filter_repair | sed -e '/unknown block state, ag AGNO, block AGBNO/d' } _filter_dd() { fgrep -v records # lose records in/out lines } # do some controlled corrupting & ensure repair recovers us # _check_repair() { value=$1 structure="$2" #ensure the filesystem has been dirtied since last repair _scratch_mount POSIXLY_CORRECT=yes \ dd if=/bin/bash of=$SCRATCH_MNT/sh 2>&1 |_filter_dd sync rm -f $SCRATCH_MNT/sh _scratch_unmount _zero_position $value "$structure" _scratch_xfs_repair 2>&1 | _filter_repair # some basic sanity checks... _check_scratch_fs _scratch_mount #mount POSIXLY_CORRECT=yes \ dd if=/bin/bash of=$SCRATCH_MNT/sh 2>&1 |_filter_dd #open,write POSIXLY_CORRECT=yes \ dd if=$SCRATCH_MNT/sh of=/dev/null 2>&1 |_filter_dd #read rm -f $SCRATCH_MNT/sh #unlink _scratch_unmount #umount } # make sure this script returns success /bin/true