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Mike Burns

2010-Mar-24 13:03 UTC

[Ovirt-devel] [PATCH node][REPOST 1/2] Fix uninstall to detect and cleanup correct partitions

Previous implementation had staticly defined partitions to remove.
This would break in the case of split Root and HostVG devices.

Signed-off-by: Mike Burns <mburns at redhat.com>
---
 scripts/ovirt-config-boot      |   11 +--------
 scripts/ovirt-config-uninstall |   48 ++++++++++++++++++++++++---------------
 scripts/ovirt-functions        |   33 +++++++++++++++++++++++++++
 3 files changed, 63 insertions(+), 29 deletions(-)

diff --git a/scripts/ovirt-config-boot b/scripts/ovirt-config-boot
index 28d1572..ac43daa 100755
--- a/scripts/ovirt-config-boot
+++ b/scripts/ovirt-config-boot
@@ -50,12 +50,7 @@ ovirt_boot_setup() {
     fi

     # check that /boot mounted ok and find partition number for GRUB
-    eval $(readlink -f /dev/disk/by-label/$grub_dev_label|awk {'
-        print "disk=" substr($1,1,length($1)-1);
-        print "disk2=" substr($1,1,length($1)-2);
-        partN=substr($1,length($1),1); partN--;
-        print "partN=" partN;
-    }')
+    get_part_info $(readlink -f /dev/disk/by-label/$grub_dev_label disk partN
     rc=$?
     if [ $rc -ne 0 -o $partN -lt 0 ]; then
       log "unable to determine Root partition"
@@ -70,10 +65,6 @@ ovirt_boot_setup() {
           return 1
         fi

-        if [ ! -e "$disk" ]; then
-            # e.g. c0d0p1
-            disk="$disk2"
-        fi
         # prepare Root partition update
         candidate         if [ -e /dev/disk/by-label/RootBackup ]; then
diff --git a/scripts/ovirt-config-uninstall b/scripts/ovirt-config-uninstall
index 3b7b48d..b6675e7 100755
--- a/scripts/ovirt-config-uninstall
+++ b/scripts/ovirt-config-uninstall
@@ -37,27 +37,37 @@ if ask_yes_or_no "Do you wish to continue and uninstall
this node ([Y]es/[N]o)?"
         rm -f /var/lib/multipath/bindings
         unmount_logging
         unmount_config /etc/default/ovirt
+        #get partition info
+        root2=""
+        if findfs LABEL=RootBackup 2>&1 >/dev/null; then
+            root2=RootBackup
+        elif findfs LABEL=RootUpdate 2>&1 >/dev/null; then
+            root2=RootUpdate
+        elif findfs LABEL=RootNew 2>&1 >/dev/null; then
+            root2=RootNew
+        fi
+        if ! get_part_info $(findfs LABEL=Root 2>/dev/null) root_dev
root_part; then
+            log "Can't find Root device"
+            exit 2
+        fi
+        if ! get_part_info $(findfs LABEL=${root2} 2>/dev/null) root2_dev
root2_part; then
+            log "Can't find RootBackup/RootNew/RootUpdate device"
+            exit 3
+        fi
+        if ! get_part_info $(pvs --noheadings -o pv_name,vg_name | grep HostVG
| awk '{print $1}') pv_dev pv_part; then
+            log "Can't find HostVG device"
+            exit 4
+        fi
         log "Removing volume group"
         wipe_volume_group "HostVG"
-        partition=$(readlink -f $(findfs LABEL=Root))
-        if [ -n "$partition" ]; then
-            log "Removing partitions"
-            eval $(echo $partition | awk ' {
-                print "drive=" substr($0,1,length($1)-1);
-                print "drive2=" substr($0,1,length($1)-2);
-            }')
-            if [ ! -e "$drive" ]; then
-                drive="$drive2"
-                partpv="$drive}p2"
-            else
-                partpv="${drive}2"
-            fi
-	        parted -s $drive "rm 1"
-            pvremove ${partpv}
-	        parted -s $drive "rm 2"
-            parted -s $drive "rm 3"
-            wipe_partitions $drive
-	    fi
+        log "Removing partitions"
+        parted -s $root_dev "rm $root_part"
+        pvremove ${vg_dev}
+        parted -s $root2_dev "rm $root2_part"
+        parted -s $vg_dev "rm $vg_part"
+        wipe_partitions $pv_dev
+        wipe_partitions $root_dev
+        wipe_partitions $root2_dev
         #restart multipath
         multipath -F
         multipath -v3
diff --git a/scripts/ovirt-functions b/scripts/ovirt-functions
index c2ef94b..b98e31a 100644
--- a/scripts/ovirt-functions
+++ b/scripts/ovirt-functions
@@ -851,6 +851,39 @@ get_dm_device ()
     return $rc
 }

+#Function to determine partition and device names
+get_part_info() {
+    local drive_in=$1
+    local dev_var=$2
+    local part_var=$3
+    local devname_1 devname2 part_number
+    local rc=0
+
+    eval $(readlink -f $drive_in|awk {'
+        print "devname_1=" substr($1,1,length($1)-1);
+        print "devname_2=" substr($1,1,length($1)-2);
+        part_number=substr($1,length($1),1);
+        print "part_number=" part_number;
+    }')
+    rc=$?
+
+    if [[ "part_number" -lt 1 ]]; then
+        log "Partition number was invalid"
+        return 2
+    fi
+
+
+    if [ -e ${devname_1} ]; then
+        eval "${dev_var}"="${devname_1}"
+    elif [ -e ${devname_2} ]; then
+        eval "${dev_var}"="${devname_2}"
+    else
+        return 1
+    fi
+    eval "${part_var}"="${part_number}"
+    return $rc
+}
+
 # execute a function if called as a script, e.g.
 #   ovirt-functions ovirt_store_config /etc/hosts

-- 
1.6.6.1

Mike Burns

2010-Mar-24 13:03 UTC

head link

[Ovirt-devel] [PATCH node][REPOST 2/2] Remove dependencies on /dev/disk/by-label entries

Use findfs LABEL=ABC and mount LABEL=ABC instead.

Signed-off-by: Mike Burns <mburns at redhat.com>
---
 scripts/ovirt-config-boot    |   29 ++++++++++++++++-------------
 scripts/ovirt-config-storage |    2 --
 scripts/ovirt-functions      |   18 ++++++++++--------
 3 files changed, 26 insertions(+), 23 deletions(-)

diff --git a/scripts/ovirt-config-boot b/scripts/ovirt-config-boot
index ac43daa..d545878 100755
--- a/scripts/ovirt-config-boot
+++ b/scripts/ovirt-config-boot
@@ -29,14 +29,21 @@ ovirt_boot_setup() {
     local disk2
     local partN=-1
     log "installing the image."
-    if [ -h /dev/disk/by-label/Boot ]; then
+    local found_boot=false
+    if findfs LABEL=Boot 2>&1 >/dev/null ; then
+        found_boot=true
+        grub_dev_label=Boot
+    elif findfs LABEL=Root 2>&1 >/dev/null ; then
+        found_boot=true
+        grub_dev_label=Root
+    fi
+    if $found_boot; then
         mount_boot
         mountpoint /boot
         if [ $? -ne 0 ] ; then
             log "Boot partition not available"
             return 1
         fi
-        grub_dev_label="Boot"
         # Grab OVIRT_ISCSI VARIABLES from boot partition for upgrading
         # file created only if OVIRT_ISCSI_ENABLED=y
         if [ -f /boot/ovirt ]; then
@@ -50,7 +57,7 @@ ovirt_boot_setup() {
     fi

     # check that /boot mounted ok and find partition number for GRUB
-    get_part_info $(readlink -f /dev/disk/by-label/$grub_dev_label disk partN
+    get_part_info $(readlink -f $(findfs LABEL=$grub_dev_label 2>/dev/null))
disk partN
     rc=$?
     if [ $rc -ne 0 -o $partN -lt 0 ]; then
       log "unable to determine Root partition"
@@ -67,11 +74,11 @@ ovirt_boot_setup() {

         # prepare Root partition update
         candidate-        if [ -e /dev/disk/by-label/RootBackup ]; then
+        if findfs LABEL=RootBackup 2>&1 >/dev/null; then
             candidate=RootBackup
-        elif [ -e /dev/disk/by-label/RootUpdate ]; then
+        elif findfs LABEL=RootUpdate 2>&1 >/dev/null; then
             candidate=RootUpdate
-        elif [ -e /dev/disk/by-label/RootNew ]; then
+        elif findfs LABEL=RootNew 2>&1 >/dev/null; then
             candidate=RootNew
         fi
         if [ -z "$candidate" ]; then
@@ -80,7 +87,7 @@ ovirt_boot_setup() {
             umount /liveos
             rc=0
         else
-            candidate_dev=$(readlink -f /dev/disk/by-label/$candidate)
+            candidate_dev=$(findfs LABEL=$candidate 2>/dev/null)
             e2label $candidate_dev RootNew
             rc=$?
         fi
@@ -90,7 +97,7 @@ ovirt_boot_setup() {
           return $rc
         fi

-        mount $candidate_dev /liveos
+        mount $candidate_dev /liveos/

         rm -rf /liveos/LiveOS
         mkdir -p /liveos/LiveOS
@@ -212,11 +219,7 @@ if [ $rc -eq 0 -a "$doreboot" = "yes"
]; then
     ovirt_store_firstboot_config
     stop_log

-    if [ "$OVIRT_ISCSI_ENABLED" != "y" ]; then
-        reboot
-    else
-        /sbin/reboot
-    fi
+    reboot
 fi
 stop_log
 exit $rc
diff --git a/scripts/ovirt-config-storage b/scripts/ovirt-config-storage
index c6473a6..93b94b0 100755
--- a/scripts/ovirt-config-storage
+++ b/scripts/ovirt-config-storage
@@ -703,8 +703,6 @@ perform_partitioning()
     log "Creating volume group"
     vgcreate /dev/HostVG "${partpv}"

-    mkdir -p /dev/disk/by-label
-
     if [ "$SWAP_SIZE" -gt 0 ]; then
         log "Creating swap partition"
         lvcreate --name Swap --size ${SWAP_SIZE}M /dev/HostVG
diff --git a/scripts/ovirt-functions b/scripts/ovirt-functions
index b98e31a..482441a 100644
--- a/scripts/ovirt-functions
+++ b/scripts/ovirt-functions
@@ -283,7 +283,7 @@ mount_liveos() {
         return 0
     fi
     mkdir -p /liveos
-    mount /dev/disk/by-label/Root /liveos
+    mount LABEL=Root /liveos
 }

 # mount config partition
@@ -326,7 +326,7 @@ mount_boot() {
        return 0
     fi
     mkdir -p /boot
-    mount /dev/disk/by-label/Boot /boot
+    mount LABEL=Root /boot
 }
 # stop any service which keeps /var/log busy
 # keep the list of services
@@ -709,12 +709,14 @@ lvremove() {
 #   cleanup before reboot
 reboot() {
     cd /
-    # setup new Root if update is prepared
-    if [ -e "/dev/disk/by-label/RootUpdate" ]; then
-        root_update_dev=$(readlink -f /dev/disk/by-label/RootUpdate)
-        root_dev=$(readlink -f /dev/disk/by-label/Root)
-        e2label $root_dev RootBackup
-        e2label $root_update_dev Root
+    if [ "$OVIRT_ISCSI_ENABLED" = "yes" ]; then
+        # setup new Root if update is prepared
+        if findfs LABEL=RootUpdate 2>&1 >/dev/null; then
+            root_update_dev=$(findfs LABEL=RootUpdate 2>/dev/null)
+            root_dev=$(findfs LABEL=Root 2>/dev/null)
+            e2label $root_dev RootBackup
+            e2label $root_update_dev Root
+        fi
     fi
     # run post-install hooks
     # e.g. to avoid reboot loops using Cobbler PXE only once
-- 
1.6.6.1

Joey Boggs

2010-Mar-24 15:10 UTC

head link

[Ovirt-devel] [PATCH node][REPOST 1/2] Fix uninstall to detect and cleanup correct partitions

On 03/24/2010 09:03 AM, Mike Burns wrote:> Previous implementation had staticly defined partitions to remove.
> This would break in the case of split Root and HostVG devices.
>
> Signed-off-by: Mike Burns<mburns at redhat.com>
> ---
>   scripts/ovirt-config-boot      |   11 +--------
>   scripts/ovirt-config-uninstall |   48
++++++++++++++++++++++++---------------
>   scripts/ovirt-functions        |   33 +++++++++++++++++++++++++++
>   3 files changed, 63 insertions(+), 29 deletions(-)
>
> diff --git a/scripts/ovirt-config-boot b/scripts/ovirt-config-boot
> index 28d1572..ac43daa 100755
> --- a/scripts/ovirt-config-boot
> +++ b/scripts/ovirt-config-boot
> @@ -50,12 +50,7 @@ ovirt_boot_setup() {
>       fi
>
>       # check that /boot mounted ok and find partition number for GRUB
> -    eval $(readlink -f /dev/disk/by-label/$grub_dev_label|awk {'
> -        print "disk=" substr($1,1,length($1)-1);
> -        print "disk2=" substr($1,1,length($1)-2);
> -        partN=substr($1,length($1),1); partN--;
> -        print "partN=" partN;
> -    }')
> +    get_part_info $(readlink -f /dev/disk/by-label/$grub_dev_label disk
partN
>       rc=$?
>       if [ $rc -ne 0 -o $partN -lt 0 ]; then
>         log "unable to determine Root partition"
> @@ -70,10 +65,6 @@ ovirt_boot_setup() {
>             return 1
>           fi
>
> -        if [ ! -e "$disk" ]; then
> -            # e.g. c0d0p1
> -            disk="$disk2"
> -        fi
>           # prepare Root partition update
>           candidate>           if [ -e /dev/disk/by-label/RootBackup ];
then
> diff --git a/scripts/ovirt-config-uninstall
b/scripts/ovirt-config-uninstall
> index 3b7b48d..b6675e7 100755
> --- a/scripts/ovirt-config-uninstall
> +++ b/scripts/ovirt-config-uninstall
> @@ -37,27 +37,37 @@ if ask_yes_or_no "Do you wish to continue and
uninstall this node ([Y]es/[N]o)?"
>           rm -f /var/lib/multipath/bindings
>           unmount_logging
>           unmount_config /etc/default/ovirt
> +        #get partition info
> +        root2=""
> +        if findfs LABEL=RootBackup 2>&1>/dev/null; then
> +            root2=RootBackup
> +        elif findfs LABEL=RootUpdate 2>&1>/dev/null; then
> +            root2=RootUpdate
> +        elif findfs LABEL=RootNew 2>&1>/dev/null; then
> +            root2=RootNew
> +        fi
> +        if ! get_part_info $(findfs LABEL=Root 2>/dev/null) root_dev
root_part; then
> +            log "Can't find Root device"
> +            exit 2
> +        fi
> +        if ! get_part_info $(findfs LABEL=${root2} 2>/dev/null)
root2_dev root2_part; then
> +            log "Can't find RootBackup/RootNew/RootUpdate
device"
> +            exit 3
> +        fi
> +        if ! get_part_info $(pvs --noheadings -o pv_name,vg_name | grep
HostVG | awk '{print $1}') pv_dev pv_part; then
> +            log "Can't find HostVG device"
> +            exit 4
> +        fi
>           log "Removing volume group"
>           wipe_volume_group "HostVG"
> -        partition=$(readlink -f $(findfs LABEL=Root))
> -        if [ -n "$partition" ]; then
> -            log "Removing partitions"
> -            eval $(echo $partition | awk ' {
> -                print "drive=" substr($0,1,length($1)-1);
> -                print "drive2=" substr($0,1,length($1)-2);
> -            }')
> -            if [ ! -e "$drive" ]; then
> -                drive="$drive2"
> -                partpv="$drive}p2"
> -            else
> -                partpv="${drive}2"
> -            fi
> -	        parted -s $drive "rm 1"
> -            pvremove ${partpv}
> -	        parted -s $drive "rm 2"
> -            parted -s $drive "rm 3"
> -            wipe_partitions $drive
> -	    fi
> +        log "Removing partitions"
> +        parted -s $root_dev "rm $root_part"
> +        pvremove ${vg_dev}
> +        parted -s $root2_dev "rm $root2_part"
> +        parted -s $vg_dev "rm $vg_part"
> +        wipe_partitions $pv_dev
> +        wipe_partitions $root_dev
> +        wipe_partitions $root2_dev
>           #restart multipath
>           multipath -F
>           multipath -v3
> diff --git a/scripts/ovirt-functions b/scripts/ovirt-functions
> index c2ef94b..b98e31a 100644
> --- a/scripts/ovirt-functions
> +++ b/scripts/ovirt-functions
> @@ -851,6 +851,39 @@ get_dm_device ()
>       return $rc
>   }
>
> +#Function to determine partition and device names
> +get_part_info() {
> +    local drive_in=$1
> +    local dev_var=$2
> +    local part_var=$3
> +    local devname_1 devname2 part_number
> +    local rc=0
> +
> +    eval $(readlink -f $drive_in|awk {'
> +        print "devname_1=" substr($1,1,length($1)-1);
> +        print "devname_2=" substr($1,1,length($1)-2);
> +        part_number=substr($1,length($1),1);
> +        print "part_number=" part_number;
> +    }')
> +    rc=$?
> +
> +    if [[ "part_number" -lt 1 ]]; then
> +        log "Partition number was invalid"
> +        return 2
> +    fi
> +
> +
> +    if [ -e ${devname_1} ]; then
> +        eval "${dev_var}"="${devname_1}"
> +    elif [ -e ${devname_2} ]; then
> +        eval "${dev_var}"="${devname_2}"
> +    else
> +        return 1
> +    fi
> +    eval "${part_var}"="${part_number}"
> +    return $rc
> +}
> +
>   # execute a function if called as a script, e.g.
>   #   ovirt-functions ovirt_store_config /etc/hosts
>
>    ACK

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