From d4076fa2a8712c551db31967ca25d34c132418de Mon Sep 17 00:00:00 2001
From: pedro <git2021@cas.cat>
Date: Wed, 25 Sep 2024 20:16:03 -0300
Subject: [PATCH] pxe: do the trick for rw snapshots dir

---
 deploy-workbench.sh |  4 ++++
 pxe/install-pxe.sh  | 11 +++++++++++
 2 files changed, 15 insertions(+)

diff --git a/deploy-workbench.sh b/deploy-workbench.sh
index 7111840..3313e9e 100755
--- a/deploy-workbench.sh
+++ b/deploy-workbench.sh
@@ -272,6 +272,10 @@ cd /mnt
 # detect pxe env
 if [ -d /run/live/medium ]; then
         config_path='/run/live/medium/settings.ini'
+        # debian live nfs path is readonly, do a trick
+        #   to make snapshots subdir readwrite
+        nfs_host="\$(df -hT | grep nfs | cut -f1 -d: | head -n1)"
+        mount \${nfs_host}:/snapshots /run/live/medium/snapshots
 else
         config_path='/mnt/settings.ini'
 fi
diff --git a/pxe/install-pxe.sh b/pxe/install-pxe.sh
index ed94e07..96ac03d 100755
--- a/pxe/install-pxe.sh
+++ b/pxe/install-pxe.sh
@@ -23,9 +23,20 @@ backup_file() {
 
 install_nfs() {
         backup_file /etc/exports
+
+        # debian live nfs path is readonly, do a trick
+        #   to make snapshots subdir readwrite
+        if grep -q "/snapshots" /proc/mounts; then
+                mount --bind "${nfs_path}/snapshots" "/snapshots"
+        fi
+
         cat > /etc/exports <<END
 ${nfs_path} ${nfs_allowed_lan}(rw,sync,no_subtree_check,no_root_squash)
+/snapshots ${nfs_allowed_lan}(rw,sync,no_subtree_check,no_root_squash)
 END
+        # reload nfs exports
+        exportfs -vra
+
         # append live directory, which is expected by the debian live env
         mkdir -p "${nfs_path}/live"
         mkdir -p "${nfs_path}/snapshots"