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btrfs: add replace missing and replace RAID 5/6 to profile configs

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Replacing and scrubbing RAID 5/6 is now supported on Btrfs. Enable it in
_btrfs_get_profile_configs while making it more generic to also support
replace missing.

Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Omar Sandoval
2016-05-09 10:57:50 +10:00
committed by Dave Chinner
parent 238397db22
commit 0a9b318f41
1 changed files with 48 additions and 47 deletions
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common/rc
+48 -47
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@@ -3223,60 +3223,61 @@ _btrfs_get_profile_configs()
return
fi
# no user specified btrfs profile configs, export the default configs
if [ -z "$BTRFS_PROFILE_CONFIGS" ]; then
# default configs
_btrfs_profile_configs=(
"-m single -d single"
"-m dup -d single"
"-m raid0 -d raid0"
"-m raid1 -d raid0"
"-m raid1 -d raid1"
"-m raid10 -d raid10"
"-m raid5 -d raid5"
"-m raid6 -d raid6"
# Default configurations to test.
local configs=(
"single:single"
"dup:single"
"raid0:raid0"
"raid1:raid0"
"raid1:raid1"
"raid10:raid10"
"raid5:raid5"
"raid6:raid6"
)
else
# User-provided configurations.
local configs=(${BTRFS_PROFILE_CONFIGS[@]})
fi
# remove dup/raid5/raid6 profiles if we're doing device replace
# dup profile indicates only one device being used (SCRATCH_DEV),
# but we don't want to replace SCRATCH_DEV, which will be used in
# _scratch_mount/_check_scratch_fs etc.
# and raid5/raid6 doesn't support replace yet
_btrfs_profile_configs=()
for cfg in "${configs[@]}"; do
local supported=true
local profiles=(${cfg/:/ })
if [ "$1" == "replace" ]; then
_btrfs_profile_configs=(
"-m single -d single"
"-m raid0 -d raid0"
"-m raid1 -d raid0"
"-m raid1 -d raid1"
"-m raid10 -d raid10"
# add these back when raid5/6 is working with replace
#"-m raid5 -d raid5"
#"-m raid6 -d raid6"
# We can't do replace with these profiles because they
# imply only one device ($SCRATCH_DEV), and we need to
# keep $SCRATCH_DEV around for _scratch_mount
# and _check_scratch_fs.
local unsupported=(
"dup"
)
elif [ "$1" == "replace-missing" ]; then
# We can't replace missing devices with these profiles
# because there isn't enough redundancy.
local unsupported=(
"single"
"dup"
"raid0"
)
else
local unsupported=()
fi
for unsupp in "${unsupported[@]}"; do
if [ "${profiles[0]}" == "$unsupp" -o "${profiles[1]}" == "$unsupp" ]; then
if [ -z "$BTRFS_PROFILE_CONFIGS" ]; then
# For the default config, just omit it.
supported=false
else
# For user-provided config, don't run the test.
_notrun "Profile $unsupp not supported for $1"
fi
fi
done
if "$supported"; then
_btrfs_profile_configs+=("-m ${profiles[0]} -d ${profiles[1]}")
fi
export _btrfs_profile_configs
return
fi
# parse user specified btrfs profile configs
local i=0
local cfg=""
for cfg in $BTRFS_PROFILE_CONFIGS; do
# turn "metadata:data" format to "-m metadata -d data"
# and assign it to _btrfs_profile_configs array
cfg=`echo "$cfg" | sed -e 's/^/-m /' -e 's/:/ -d /'`
_btrfs_profile_configs[$i]="$cfg"
let i=i+1
done
if [ "$1" == "replace" ]; then
if echo ${_btrfs_profile_configs[*]} | grep -q raid[56]; then
_notrun "RAID5/6 doesn't support btrfs device replace yet"
fi
if echo ${_btrfs_profile_configs[*]} | grep -q dup; then
_notrun "Do not set dup profile in btrfs device replace test"
fi
fi
export _btrfs_profile_configs
}