X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=chiark-utils.git;a=blobdiff_plain;f=backup%2Fremountrocp;h=d9ba15518a20c6279790b632b21c33ed88e9b965;hp=5e40cc37cc72976d5a7d827a9830de1f0f296683;hb=0d31a244645ed1fec50232ddc31debfb5d38c0f2;hpb=3ee0c9e37f7e59f966312c6c4e48faadf354a69b

diff --git a/backup/remountrocp b/backup/remountrocp
index 5e40cc3..d9ba155 100755
--- a/backup/remountrocp
+++ b/backup/remountrocp
@@ -59,7 +59,17 @@ mkfs -t $remountrocp_fs "$lvpath"
 mkdir -- "$snmnt"
 mount -t $remountrocp_fs $lvm_mount_opts "$lvpath" "$snmnt"
 
-mount -o remount,ro "$mountpoint"
+attempts=10
+while true; do
+	if mount -o remount,ro "$mountpoint"; then last; fi
+	attempts=$(( $attempts - 1 ))
+	if [ $attempts = 0 ]; then
+		echo >&2 'cannot remount readonly'
+		exit 1
+	fi
+	sleep 1
+done
+
 trap "mount -o remount,rw $mountpoint; exit 12" 0
 cp -a -- "$mountpoint/." "$snmnt/."
 mount -o remount,rw "$mountpoint"