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From deb36d236e2dd86ddc16b33d5ca8c648cc8ed369 Mon Sep 17 00:00:00 2001
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From: Zdenek Kabelac <zkabelac@redhat.com>
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Date: Wed, 1 Sep 2021 15:46:04 +0200
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Subject: [PATCH 3/5] vdo: better message for missing device
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Show readable message when passed device cannot be accessed.
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And use STAT shell var wrapper to call 'stat' command.
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(cherry picked from commit 3287d37f440ca272b52f900fc60ee5effcf73697)
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Conflicts:
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scripts/lvm_import_vdo.sh
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---
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scripts/lvm_import_vdo.sh | 21 +++++++++++----------
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1 file changed, 11 insertions(+), 10 deletions(-)
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diff --git a/scripts/lvm_import_vdo.sh b/scripts/lvm_import_vdo.sh
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index f8dd71f..dec32bc 100755
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--- a/scripts/lvm_import_vdo.sh
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+++ b/scripts/lvm_import_vdo.sh
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@@ -18,8 +18,8 @@
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#
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# Needed utilities:
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# lvm, dmsetup,
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-# vdo, vdo2lvm,
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-# grep, awk, sed, blockdev, readlink, mkdir
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+# vdo,
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+# grep, awk, sed, blockdev, readlink, stat, mkdir
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#
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# Conversion is using 'vdo convert' support from VDO manager to move
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# existing VDO header by 2M which makes space to place in PV header
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@@ -40,6 +40,7 @@ VDOCONF=${VDOCONF:-}
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BLOCKDEV="blockdev"
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READLINK="readlink"
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READLINK_E="-e"
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+STAT="stat"
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MKDIR="mkdir"
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DMSETUP="dmsetup"
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@@ -156,8 +157,8 @@ detect_lv_() {
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local MAJORMINOR
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DEVICE=${1/#"${DM_DEV_DIR}/"/}
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- DEVICE=$("$READLINK" $READLINK_E "$DM_DEV_DIR/$DEVICE")
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- test -n "$DEVICE" || error "Cannot get readlink \"$1\"."
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+ DEVICE=$("$READLINK" $READLINK_E "$DM_DEV_DIR/$DEVICE" || true)
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+ test -n "$DEVICE" || error "Readlink cannot access device \"$1\"."
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RDEVICE=$DEVICE
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case "$RDEVICE" in
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# hardcoded /dev since udev does not create these entries elsewhere
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@@ -168,9 +169,9 @@ detect_lv_() {
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DEVMINOR=${MAJORMINOR##*:}
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;;
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*)
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- STAT=$(stat --format "DEVMAJOR=\$((0x%t)) DEVMINOR=\$((0x%T))" "$RDEVICE")
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- test -n "$STAT" || error "Cannot get major:minor for \"$DEVICE\"."
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- eval "$STAT"
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+ RSTAT=$("$STAT" --format "DEVMAJOR=\$((0x%t)) DEVMINOR=\$((0x%T))" "$RDEVICE" || true)
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+ test -n "$RSTAT" || error "Cannot get major:minor for \"$DEVICE\"."
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+ eval "$RSTAT"
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;;
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esac
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@@ -269,8 +270,8 @@ convert2lvm_() {
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for i in $(awk '/.*device:/ {print $2}' "$TEMPDIR/vdoconf.yml") ; do
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local DEV
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DEV=$("$READLINK" $READLINK_E "$i") || continue
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- STAT=$(stat --format "MAJOR=\$((0x%t)) MINOR=\$((0x%T))" "$DEV" 2>/dev/null) || continue
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- eval "$STAT"
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+ RSTAT=$("$STAT" --format "MAJOR=\$((0x%t)) MINOR=\$((0x%T))" "$DEV" 2>/dev/null) || continue
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+ eval "$RSTAT"
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test "$MAJOR" = "$DEVMAJOR" && test "$MINOR" = "$DEVMINOR" && {
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test -z "$FOUND" || error "VDO configuration contains duplicate entries $FOUND and $i"
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FOUND=$i
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@@ -287,7 +288,7 @@ convert2lvm_() {
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DM_OPEN="$("$DMSETUP" info -c -o open "$VDONAME" --noheadings --nameprefixes 2>/dev/null || true)"
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case "$DM_OPEN" in
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Device*) ;; # no devices
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- *) eval "$DM_OPEN"
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+ *) eval "$DM_OPEN"
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test "${DM_OPEN:-0}" -eq 0 || error "Cannot converted VDO volume \"$VDONAME\" which is in use!"
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;;
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esac
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--
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1.8.3.1
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