From f66434268cef381b2799c45c654162bfb8e128ce Mon Sep 17 00:00:00 2001 From: Matthew Ahrens Date: Wed, 10 Jun 2020 17:07:59 -0700 Subject: [PATCH] Remove unnecessary references to slavery The horrible effects of human slavery continue to impact society. The casual use of the term "slave" in computer software is an unnecessary reference to a painful human experience. This commit removes all possible references to the term "slave". Implementation notes: The zpool.d/slaves script is renamed to dm-deps, which uses the same terminology as `dmsetup deps`. References to the `/sys/class/block/$dev/slaves` directory remain. This directory name is determined by the Linux kernel. Although `dmsetup deps` provides the same information, it unfortunately requires elevated privileges, whereas the `/sys/...` directory is world-readable. Reviewed-by: Brian Behlendorf Reviewed-by: Ryan Moeller Signed-off-by: Matthew Ahrens Closes #10435 --- cmd/zpool/Makefile.am | 4 +-- cmd/zpool/zpool.d/{slaves => dm-deps} | 11 +++----- .../02zfsexpandknowledge/module-setup.sh.in | 26 +++++++++---------- include/os/freebsd/spl/sys/dkio.h | 1 - lib/libspl/include/sys/dkio.h | 1 - lib/libzutil/os/linux/zutil_device_path_os.c | 6 ++++- man/man8/zpool.8 | 19 +++++--------- tests/zfs-tests/include/blkdev.shlib | 22 ++++++++-------- 8 files changed, 42 insertions(+), 48 deletions(-) rename cmd/zpool/zpool.d/{slaves => dm-deps} (64%) diff --git a/cmd/zpool/Makefile.am b/cmd/zpool/Makefile.am index 157fed2e01e8..1dcb9852010a 100644 --- a/cmd/zpool/Makefile.am +++ b/cmd/zpool/Makefile.am @@ -36,6 +36,7 @@ zpoolexecdir = $(zfsexecdir)/zpool.d EXTRA_DIST = zpool.d/README dist_zpoolexec_SCRIPTS = \ + zpool.d/dm-deps \ zpool.d/enc \ zpool.d/encdev \ zpool.d/fault_led \ @@ -50,7 +51,6 @@ dist_zpoolexec_SCRIPTS = \ zpool.d/serial \ zpool.d/ses \ zpool.d/size \ - zpool.d/slaves \ zpool.d/slot \ zpool.d/smart \ zpool.d/smartx \ @@ -80,6 +80,7 @@ dist_zpoolexec_SCRIPTS = \ zpool.d/test_ended zpoolconfdefaults = \ + dm-deps \ enc \ encdev \ fault_led \ @@ -94,7 +95,6 @@ zpoolconfdefaults = \ serial \ ses \ size \ - slaves \ slot \ smart \ smartx \ diff --git a/cmd/zpool/zpool.d/slaves b/cmd/zpool/zpool.d/dm-deps similarity index 64% rename from cmd/zpool/zpool.d/slaves rename to cmd/zpool/zpool.d/dm-deps index 9c16d6c4e526..ee39514e4d92 100755 --- a/cmd/zpool/zpool.d/slaves +++ b/cmd/zpool/zpool.d/dm-deps @@ -1,14 +1,11 @@ #!/bin/sh # -# Show device mapper slave devices. This is useful for looking up the -# /dev/sd* devices associated with a dm or multipath device. For example: -# -# $ ls /sys/block/dm-113/slaves/ -# sddt sdjw +# Show device mapper dependent / underlying devices. This is useful for +# looking up the /dev/sd* devices associated with a dm or multipath device. # if [ "$1" = "-h" ] ; then - echo "Show device mapper slave devices." + echo "Show device mapper dependent (underlying) devices." exit fi @@ -29,4 +26,4 @@ if [ -d "/sys/class/block/$dev/slaves" ] ; then val=$(echo "$val" | sed -r 's/[[:blank:]]+/ /g') fi -echo "slaves=$val" +echo "dm-deps=$val" diff --git a/contrib/dracut/02zfsexpandknowledge/module-setup.sh.in b/contrib/dracut/02zfsexpandknowledge/module-setup.sh.in index a2a3ef0370dc..8429bd109411 100755 --- a/contrib/dracut/02zfsexpandknowledge/module-setup.sh.in +++ b/contrib/dracut/02zfsexpandknowledge/module-setup.sh.in @@ -74,10 +74,10 @@ check() { local blockdevs local fstype local majmin - local _slavedev - local _slavedevname - local _slavedevtype - local _slavemajmin + local _depdev + local _depdevname + local _depdevtype + local _depmajmin local _dev if [[ $hostonly ]]; then @@ -108,15 +108,15 @@ if [[ $hostonly ]]; then host_fs_types["$dev"]="$fstype" majmin=$(get_maj_min "$dev") if [[ -d /sys/dev/block/$majmin/slaves ]] ; then - for _slavedev in /sys/dev/block/$majmin/slaves/*; do - [[ -f $_slavedev/dev ]] || continue - _slavedev=/dev/$(basename "$_slavedev") - _slavedevname=$(udevadm info --query=property --name="$_slavedev" | grep "^DEVNAME=" | sed 's|^DEVNAME=||') - _slavedevtype=$(get_devtype "$_slavedevname") - _slavemajmin=$(get_maj_min "$_slavedevname") - dinfo "zfsexpandknowledge: slave block device backing ZFS dataset $mp: $_slavedevname" - array_contains "$_slavedevname" "${host_devs[@]}" || host_devs+=("$_slavedevname") - host_fs_types["$_slavedevname"]="$_slavedevtype" + for _depdev in /sys/dev/block/$majmin/slaves/*; do + [[ -f $_depdev/dev ]] || continue + _depdev=/dev/$(basename "$_depdev") + _depdevname=$(udevadm info --query=property --name="$_depdev" | grep "^DEVNAME=" | sed 's|^DEVNAME=||') + _depdevtype=$(get_devtype "$_depdevname") + _depmajmin=$(get_maj_min "$_depdevname") + dinfo "zfsexpandknowledge: underlying block device backing ZFS dataset $mp: $_depdevname" + array_contains "$_depdevname" "${host_devs[@]}" || host_devs+=("$_depdevname") + host_fs_types["$_depdevname"]="$_depdevtype" done fi done diff --git a/include/os/freebsd/spl/sys/dkio.h b/include/os/freebsd/spl/sys/dkio.h index 4e9ded4a9788..aed54ba50893 100644 --- a/include/os/freebsd/spl/sys/dkio.h +++ b/include/os/freebsd/spl/sys/dkio.h @@ -69,7 +69,6 @@ struct dk_cinfo { uint_t dki_vec; /* interrupt vector */ char dki_dname[DK_DEVLEN]; /* drive name (no unit #) */ uint_t dki_unit; /* unit number */ - uint_t dki_slave; /* slave number */ ushort_t dki_partition; /* partition number */ ushort_t dki_maxtransfer; /* max. transfer size in DEV_BSIZE */ }; diff --git a/lib/libspl/include/sys/dkio.h b/lib/libspl/include/sys/dkio.h index 2e6b9a1a9d41..f3c641f669b7 100644 --- a/lib/libspl/include/sys/dkio.h +++ b/lib/libspl/include/sys/dkio.h @@ -59,7 +59,6 @@ struct dk_cinfo { uint_t dki_vec; /* interrupt vector */ char dki_dname[DK_DEVLEN]; /* drive name (no unit #) */ uint_t dki_unit; /* unit number */ - uint_t dki_slave; /* slave number */ ushort_t dki_partition; /* partition number */ ushort_t dki_maxtransfer; /* max. transfer size in DEV_BSIZE */ }; diff --git a/lib/libzutil/os/linux/zutil_device_path_os.c b/lib/libzutil/os/linux/zutil_device_path_os.c index 3fff8c358e74..36331fd72bf7 100644 --- a/lib/libzutil/os/linux/zutil_device_path_os.c +++ b/lib/libzutil/os/linux/zutil_device_path_os.c @@ -203,7 +203,11 @@ dm_get_underlying_path(const char *dm_name) if (dp == NULL) goto end; - /* Return first sd* entry in /sys/block/dm-N/slaves/ */ + /* + * Return first entry (that isn't itself a directory) in the + * directory containing device-mapper dependent (underlying) + * devices. + */ while ((ep = readdir(dp))) { if (ep->d_type != DT_DIR) { /* skip "." and ".." dirs */ size = asprintf(&path, "/dev/%s", ep->d_name); diff --git a/man/man8/zpool.8 b/man/man8/zpool.8 index 4b5a1e2b30e9..505851bc4bdf 100644 --- a/man/man8/zpool.8 +++ b/man/man8/zpool.8 @@ -431,18 +431,13 @@ option. U13 ONLINE 0 0 0 SEAGATE ST8000NM0075 7.3T U14 ONLINE 0 0 0 SEAGATE ST8000NM0075 7.3T -# zpool iostat -vc slaves - capacity operations bandwidth - pool alloc free read write read write slaves - ---------- ----- ----- ----- ----- ----- ----- --------- - tank 20.4G 7.23T 26 152 20.7M 21.6M - mirror 20.4G 7.23T 26 152 20.7M 21.6M - U1 - - 0 31 1.46K 20.6M sdb sdff - U10 - - 0 1 3.77K 13.3K sdas sdgw - U11 - - 0 1 288K 13.3K sdat sdgx - U12 - - 0 1 78.4K 13.3K sdau sdgy - U13 - - 0 1 128K 13.3K sdav sdgz - U14 - - 0 1 63.2K 13.3K sdfk sdg +# zpool iostat -vc size + capacity operations bandwidth +pool alloc free read write read write size +---------- ----- ----- ----- ----- ----- ----- ---- +rpool 14.6G 54.9G 4 55 250K 2.69M + sda1 14.6G 54.9G 4 55 250K 2.69M 70G +---------- ----- ----- ----- ----- ----- ----- ---- .Ed .El .Sh ENVIRONMENT VARIABLES diff --git a/tests/zfs-tests/include/blkdev.shlib b/tests/zfs-tests/include/blkdev.shlib index 93334e4b4f86..5fda6a1bdd35 100644 --- a/tests/zfs-tests/include/blkdev.shlib +++ b/tests/zfs-tests/include/blkdev.shlib @@ -336,25 +336,25 @@ function on_off_disk # disk state{online,offline} host if [[ $state == "offline" ]] && ( is_mpath_device $disk ); then dm_name="$(readlink $DEV_DSKDIR/$disk \ | nawk -F / '{print $2}')" - slave="$(ls /sys/block/${dm_name}/slaves \ + dep="$(ls /sys/block/${dm_name}/slaves \ | nawk '{print $1}')" - while [[ -n $slave ]]; do + while [[ -n $dep ]]; do #check if disk is online - lsscsi | egrep $slave > /dev/null + lsscsi | egrep $dep > /dev/null if (($? == 0)); then - slave_dir="/sys/block/${dm_name}" - slave_dir+="/slaves/${slave}/device" - ss="${slave_dir}/state" - sd="${slave_dir}/delete" + dep_dir="/sys/block/${dm_name}" + dep_dir+="/slaves/${dep}/device" + ss="${dep_dir}/state" + sd="${dep_dir}/delete" log_must eval "echo 'offline' > ${ss}" log_must eval "echo '1' > ${sd}" - lsscsi | egrep $slave > /dev/null + lsscsi | egrep $dep > /dev/null if (($? == 0)); then log_fail "Offlining" \ "$disk failed" fi fi - slave="$(ls /sys/block/$dm_name/slaves \ + dep="$(ls /sys/block/$dm_name/slaves \ 2>/dev/null | nawk '{print $1}')" done elif [[ $state == "offline" ]] && ( is_real_device $disk ); then @@ -380,9 +380,9 @@ function on_off_disk # disk state{online,offline} host if is_mpath_device $disk; then dm_name="$(readlink $DEV_DSKDIR/$disk \ | nawk -F / '{print $2}')" - slave="$(ls /sys/block/$dm_name/slaves \ + dep="$(ls /sys/block/$dm_name/slaves \ | nawk '{print $1}')" - lsscsi | egrep $slave > /dev/null + lsscsi | egrep $dep > /dev/null if (($? != 0)); then log_fail "Onlining $disk failed" fi