it should also be mentioned that current synology dsm operating system comes with rsync 3.1.2, which is ten years old.
it seems to be special version as there ist dependency to synology specific libs. furthetmore, an update for that is not in sight, support could not tell any timeframe. roland > Am 29.01.2026 um 13:19 schrieb Turritopsis Dohrnii Teo En Ming via rsync > <[email protected]>: > > Subject: Finally managed to get rsync script working after working on it for > more than 7 hours since 1.30 AM on 28 Jan 2026 Wednesday > > Good day from Singapore, > > I have finally managed to get rsync script working after working on it for > more than 7 hours since 1.30 AM on 28 Jan 2026 Wednesday. > > The old Synology DS713+ NAS was backed up to USB external harddisk using > Hyper Backup. > > The Hyper Backup on the USB external harddisk was fully restored on the new > Synology DS1522+ NAS at 1.30 AM on 28 Jan 2026 Wednesday. > > Since 1.30 AM in the morning, I have been working for more than 7 hours to > get the rsync script working, all throughout the night. > > rsync daemon keeps failing with errors, so I had no choice but to turn to > rsync SSH. > > Before running rsync SSH, I need to get passwordless SSH login working first. > > 1️⃣ Generate an SSH key on DS713+ (client) > > ssh-keygen -t rsa -b 4096 > > Press Enter to accept the default path: > /var/services/homes/rsyncuser/.ssh/id_rsa > > Press Enter again for no passphrase (needed for automation) > > This creates: > > /var/services/homes/rsyncuser/.ssh/id_rsa ← private key (keep secret!) > /var/services/homes/rsyncuser/.ssh/id_rsa.pub ← public key > > 2️⃣ Copy the public key to DS1522+ (server) manually > > SSH into DS1522+ as rsyncuser > > mkdir -p ~/.ssh > > chmod 700 ~/.ssh > > On DS713+, print your public key: > > cat /var/services/homes/rsyncuser/.ssh/id_rsa.pub > > ---public key snipped--- > > On DS1522+, append it to authorized_keys: > > vi ~/.ssh/authorized_keys > > chmod 600 ~/.ssh/authorized_keys > > 3️⃣ Test passwordless login > > ssh [email protected] > > The authenticity of host '192.168.0.101 (192.168.0.101)' can't be established. > ECDSA key fingerprint is ---snipped--- > Are you sure you want to continue connecting (yes/no/[fingerprint])? yes > Warning: Permanently added '192.168.0.101' (ECDSA) to the list of known hosts. > @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ > @ WARNING: UNPROTECTED PRIVATE KEY FILE! @ > @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ > Permissions 0777 for '/var/services/homes/rsyncuser/.ssh/id_rsa' are too open. > It is required that your private key files are NOT accessible by others. > This private key will be ignored. > Load key "/var/services/homes/rsyncuser/.ssh/id_rsa": bad permissions > [email protected]'s password: > > On DS713+: > > chmod 700 /var/services/homes/rsyncuser/.ssh > > chmod 600 /var/services/homes/rsyncuser/.ssh/id_rsa > > chmod 644 /var/services/homes/rsyncuser/.ssh/id_rsa.pub > > Passwordless ssh login is now successful. > > Test rsync for 1 shared folder > > 1st test: > > nohup rsync -aHAX --numeric-ids \ > --partial --info=progress2,stats2,name \ > --outbuf=L \ > -e "ssh -o ServerAliveInterval=30 -o ServerAliveCountMax=20" \ > "/volume1/1 Sales/" \ > "[email protected]:/volume1/1 Sales/" \ >>> /volume1/rsync_1_Sales.log 2>&1 & > > 2nd test: > > nohup rsync -aHAX --numeric-ids \ > --partial --progress --verbose \ > --outbuf=L \ > -e "ssh -o ServerAliveInterval=30 -o ServerAliveCountMax=20" \ > "/volume1/1 Sales/" \ > "[email protected]:/volume1/1 Sales/" \ >>> /volume1/rsync_1_Sales.log 2>&1 & > > No output for above rsync runs. > > Test rsync for small folder "web" > > rsync -av --progress \ > -e "ssh -o ServerAliveInterval=30 -o ServerAliveCountMax=20" \ > "/volume1/web/" \ > "[email protected]:/volume1/web/" > > Result: > > sending incremental file list > rsync: opendir "/volume1/web/web_images" failed: Permission denied (13) > ./ > @eaDir/ > @eaDir/@tmp/ > > sent 356 bytes received 29 bytes 256.67 bytes/sec > total size is 2,310 speedup is 6.00 > rsync error: some files/attrs were not transferred (see previous errors) > (code 23) at main.c(1462) [sender=3.1.2] > > > Test rsync again with exclude eaDir > > rsync -av --progress \ > --exclude='@eaDir/' \ > -e "ssh -o ServerAliveInterval=30 -o ServerAliveCountMax=20" \ > "/volume1/web/" \ > "[email protected]:/volume1/web/" > > Result: > > sending incremental file list > rsync: opendir "/volume1/web/web_images" failed: Permission denied (13) > > sent 275 bytes received 14 bytes 192.67 bytes/sec > total size is 2,310 speedup is 7.99 > rsync error: some files/attrs were not transferred (see previous errors) > (code 23) at main.c(1462) [sender=3.1.2] > > ✅ CORRECT FIX (safe, Synology-approved) > > You need to re-apply and enforce ACL inheritance on the source NAS (DS713+). > > sudo synoacltool -add /volume1/web rsyncuser:allow:rwx > > Result: > > (synoacltool.c, 253)Unknown error > > > sudo synoacltool -enforce-inherit /volume1/web > > rsyncuser@DiskStation:~/.ssh$ sudo -u rsyncuser ls /volume1/web/web_images > ls: cannot open directory '/volume1/web/web_images': Permission denied > > ✅ Working approach: run rsync as root via SSH > > Since your goal is migration to DS1522+, the easiest solution that actually > works on DS713+ is: > > Use root on DS713+ as the source > > Use SSH rsync with passwordless keys for root > > Exclude @eaDir > > This avoids all ACL problems because root can read every folder, including > legacy ACL-protected subfolders. > > On DS713+: > > sudo -i > ssh-keygen -t rsa > > Generating public/private rsa key pair. > Enter file in which to save the key (/root/.ssh/id_rsa): > Enter passphrase (empty for no passphrase): > Enter same passphrase again: > Your identification has been saved in /root/.ssh/id_rsa > Your public key has been saved in /root/.ssh/id_rsa.pub > The key fingerprint is: > ---snipped--- > The key's randomart image is: > +---[RSA 3072]----+ > ---snipped--- > +----[SHA256]-----+ > > cat /root/.ssh/id_rsa.pub > > ---public key snipped--- > > On DS1522+: > > echo "---public key snipped---" >> > /var/services/homes/rsyncuser/.ssh/authorized_keys > > > chmod 600 /var/services/homes/rsyncuser/.ssh/authorized_keys > chown -R rsyncuser:users /var/services/homes/rsyncuser/.ssh > > Now root on DS713+ → rsyncuser on DS1522+ is passwordless. > > Test rsync again. > > rsync -aAX --numeric-ids --partial \ > --exclude='@eaDir/' \ > -e "ssh -o ServerAliveInterval=30 -o ServerAliveCountMax=20" \ > "/volume1/web/" \ > "[email protected]:/volume1/web/" \ >>> /volume1/rsync_web.log > > rsync: failed to modify permissions on "/volume1/web/intranet": Operation not > permitted (1) > rsync: rsync_xal_set: > set_xattr_syno_acl(""/volume1/web/."","user.rsync.synoacl") failed: > Permission denied (13) > rsync error: some files/attrs were not transferred (see previous errors) > (code 23) at main.c(1462) [sender=3.1.2] > > Test rsync again: > > rsync -a --numeric-ids --partial \ > --exclude='@eaDir/' \ > --no-acls --no-xattrs \ > -e "ssh -o ServerAliveInterval=30 -o ServerAliveCountMax=20" \ > "/volume1/web/" \ > "[email protected]:/volume1/web/" \ >>> /volume1/rsync_web.log > > rsync: failed to set permissions on "/volume1/web/.htaccess": Operation not > permitted (1) > rsync: failed to set permissions on "/volume1/web/index.html": Operation not > permitted (1) > rsync: failed to set permissions on "/volume1/web/intranet": Operation not > permitted (1) > rsync: failed to modify permissions on "/volume1/web/intranet": Operation not > permitted (1) > rsync: failed to set permissions on "/volume1/web/intranet/***_index.php": > Operation not permitted (1) > rsync: failed to set permissions on "/volume1/web/intranet/index.php": > Operation not permitted (1) > rsync error: some files/attrs were not transferred (see previous errors) > (code 23) at main.c(1462) [sender=3.1.2] > > Test rsync again: > > rsync -av --numeric-ids --partial \ > --exclude='@eaDir/' \ > --chmod=ugo=rwX \ > --no-acls --no-xattrs \ > -e "ssh -o ServerAliveInterval=30 -o ServerAliveCountMax=20" \ > "/volume1/web/" \ > "[email protected]:/volume1/web/" \ >>> /volume1/rsync_web.log > > rsync: failed to set permissions on "/volume1/web/.htaccess": Operation not > permitted (1) > rsync: failed to set permissions on "/volume1/web/intranet/***_index.php": > Operation not permitted (1) > rsync: failed to set permissions on "/volume1/web/intranet/index.php": > Operation not permitted (1) > rsync: failed to set permissions on "/volume1/web/web_images": Operation not > permitted (1) > rsync: failed to set permissions on "/volume1/web/web_images/bg.png": > Operation not permitted (1) > rsync: failed to set permissions on "/volume1/web/web_images/icon.png": > Operation not permitted (1) > rsync error: some files/attrs were not transferred (see previous errors) > (code 23) at main.c(1462) [sender=3.1.2] > > Test rsync again: > > rsync -rltDv --progress \ > --exclude='@eaDir/' \ > --no-perms --no-owner --no-group --no-acls --no-xattrs \ > -e "ssh -o ServerAliveInterval=30 -o ServerAliveCountMax=20" \ > "/volume1/web/" \ > "[email protected]:/volume1/web/" \ >>> /volume1/rsync_web.log > > Output: > > sending incremental file list > > sent 280 bytes received 14 bytes 196.00 bytes/sec > total size is 233,274 speedup is 793.45 > > New rsync script: > > vi rsync_script.sh > > #!/bin/bash > # DS713+ -> DS1522+ migration via rsync over SSH > # All shared folders in a loop, passwordless SSH, background-safe > > # Target NAS and user > TARGET_USER="rsyncuser" > TARGET_HOST="192.168.0.101" > > # Shared folders to migrate > FOLDERS=( > "1 Sales" > "2 OPERATIONS" > "3 Admin" > "4 ISO 9001" > "5 Finance" > "6 IT" > "7 Volume_1" > "8" > "8 SynologyLog" > "Completed Projects" > "Disk 2" > "docker" > "OSV and LLP" > "Volume_2" > "web" > "web_packages" > ) > > # Base log folder on source NAS > LOGDIR="/volume1/rsync_logs" > mkdir -p "$LOGDIR" > > # Loop over folders > for F in "${FOLDERS[@]}"; do > # Escape spaces in folder name for rsync destination > DEST_FOLDER="$F" > > echo "Starting rsync for folder: $F" > > nohup rsync -rltDv --progress \ > --exclude='@eaDir/' \ > --no-perms --no-owner --no-group --no-acls --no-xattrs \ > -e "ssh -o ServerAliveInterval=30 -o ServerAliveCountMax=20" \ > "/volume1/$F/" \ > "$TARGET_USER@$TARGET_HOST:/volume1/$DEST_FOLDER/" \ >>> "$LOGDIR/rsync_$(echo $F | tr ' ' '_').log" 2>&1 & > > done > > echo "All rsync jobs started in background. Logs are in $LOGDIR" > > End of script. > > > > chmod +x rsync_script.sh > > /root/rsync_script.sh > > Output: > > root@DiskStation:/volume1/rsync_logs# tail -f rsync_1_Sales.log > kex_exchange_identification: Connection closed by remote host > rsync error: unexplained error (code 255) at io.c(254) [sender=3.1.2] > > Test another script: > > #!/bin/bash > # Sequential background rsync for Synology migration > # Source: DS713+, Target: DS1522+ (rsyncuser) > # One folder at a time to avoid SSH session limits > > TARGET_USER="rsyncuser" > TARGET_HOST="192.168.0.101" > > FOLDERS=( > "1 Sales" > "2 OPERATIONS" > "3 Admin" > "4 ISO 9001" > "5 Finance" > "6 IT" > "7 Volume_1" > "8" > "8 SynologyLog" > "Completed Projects" > "Disk 2" > "docker" > "OSV and LLP" > "Volume_2" > "web" > "web_packages" > ) > > LOGDIR="/volume1/rsync_logs" > mkdir -p "$LOGDIR" > > for F in "${FOLDERS[@]}"; do > LOGFILE="$LOGDIR/rsync_$(echo $F | tr ' ' '_').log" > echo "===== Starting rsync for folder: $F at $(date) =====" >> "$LOGFILE" > > # Run rsync sequentially but in background via nohup > nohup rsync -rltDv --progress \ > --exclude='@eaDir/' \ > --no-perms --no-owner --no-group --no-acls --no-xattrs \ > -e "ssh -o ServerAliveInterval=30 -o ServerAliveCountMax=20" \ > "/volume1/$F/" \ > "$TARGET_USER@$TARGET_HOST:/volume1/$F/" \ >>> "$LOGFILE" 2>&1 > > echo "===== Completed rsync for folder: $F at $(date) =====" >> "$LOGFILE" > done > > echo "All rsync folders queued sequentially in nohup. Logs in $LOGDIR" > > End of script > > nohup /root/rsync_script.sh & > > Output: > > ===== Starting rsync for folder: 1 Sales at Wed Jan 28 12:31:35 +08 2026 ===== > sending incremental file list > rsync: [sender] write error: Broken pipe (32) > rsync error: error in socket IO (code 10) at io.c(871) [sender=3.1.2] > ===== Completed rsync for folder: 1 Sales at Wed Jan 28 12:31:37 +08 2026 > ===== > > Testing another script: > > #!/bin/bash > # DS713+ -> DS1522+ migration via SSH rsync > # Sequentially process 16 shared folders, per-folder logging > # Skip ACLs/xattrs to avoid permission errors > # Exclude @eaDir > > # Target NAS and user > TARGET_USER="rsyncuser" > TARGET_HOST="192.168.0.101" > > # Shared folders to migrate > FOLDERS=( > "1 Sales" > "2 OPERATIONS" > "3 Admin" > "4 ISO 9001" > "5 Finance" > "6 IT" > "7 Volume_1" > "8" > "8 SynologyLog" > "Completed Projects" > "Disk 2" > "docker" > "OSV and LLP" > "Volume_2" > "web" > "web_packages" > ) > > # Base log folder on source NAS > LOGDIR="/volume1/rsync_logs" > mkdir -p "$LOGDIR" > > # Loop through folders sequentially > for F in "${FOLDERS[@]}"; do > LOGFILE="$LOGDIR/rsync_$(echo "$F" | tr ' ' '_').log" > echo "===== Starting rsync for folder: $F at $(date) =====" >> "$LOGFILE" > > rsync -rltDv --progress \ > --exclude='@eaDir/' \ > --no-perms --no-owner --no-group --no-acls --no-xattrs \ > -e "ssh -o ServerAliveInterval=30 -o ServerAliveCountMax=20" \ > "/volume1/$F/" \ > "$TARGET_USER@$TARGET_HOST:/volume1/$F/" \ >>> "$LOGFILE" 2>&1 > > echo "===== Completed rsync for folder: $F at $(date) =====" >> "$LOGFILE" > done > > echo "All folders have been processed sequentially. Logs are in $LOGDIR" > > > > > nohup /root/rsync_script.sh > /volume1/rsync_master.log 2>&1 & > > Output: > > ===== Starting rsync for folder: 1 Sales at Wed Jan 28 12:37:26 +08 2026 ===== > sending incremental file list > rsync: [sender] write error: Broken pipe (32) > rsync error: error in socket IO (code 10) at io.c(871) [sender=3.1.2] > ===== Completed rsync for folder: 1 Sales at Wed Jan 28 12:37:27 +08 2026 > ===== > > > > > GRAND FINAL WORKING RSYNC SCRIPT - CONFIRMED AND TESTED TO BE WORKING! - AS > AT 28 JAN 2026 Wednesday 1.36 PM > ============================================================================================================== > > #!/bin/bash > # Bulletproof Synology migration script: DS713+ -> DS1522+ > # Sequential SSH rsync for 16 shared folders > # Handles spaces, retries, logs, #recycle excluded > > # ---------------------------- > # Configuration > # ---------------------------- > TARGET_USER="rsyncuser" > TARGET_HOST="192.168.0.101" > BW_LIMIT=3000 # KB/s, adjust as needed > MAX_RETRIES=3 > LOGDIR="/volume1/rsync_logs" > mkdir -p "$LOGDIR" > > # List of shared folders to migrate > FOLDERS=( > "1 Sales" > "2 OPERATIONS" > "3 Admin" > "4 ISO 9001" > "5 Finance" > "6 IT" > "7 Volume_1" > "8" > "8 SynologyLog" > "Completed Projects" > "Disk 2" > "docker" > "OSV and LLP" > "Volume_2" > "web" > "web_packages" > ) > > # ---------------------------- > # Pre-create all destination folders on DS1522+ > # ---------------------------- > echo "Creating all target folders on $TARGET_HOST..." > for F in "${FOLDERS[@]}"; do > ssh "$TARGET_USER@$TARGET_HOST" "mkdir -p '/volume1/$F'" > done > echo "All destination folders created." > > # ---------------------------- > # Migration loop > # ---------------------------- > for F in "${FOLDERS[@]}"; do > LOGFILE="$LOGDIR/rsync_$(echo "$F" | tr ' ' '_').log" > echo "===== Starting rsync for folder: $F at $(date) =====" >> "$LOGFILE" > > RETRY_COUNT=0 > SUCCESS=0 > > while [ $RETRY_COUNT -lt $MAX_RETRIES ]; do > rsync -rltDv --progress \ > --exclude='@eaDir/' \ > --exclude='#recycle/' \ > --no-perms --no-owner --no-group --no-acls --no-xattrs \ > --bwlimit=$BW_LIMIT \ > -e "ssh -o ServerAliveInterval=15 -o ServerAliveCountMax=10 -o > TCPKeepAlive=yes" \ > "/volume1/$F/" \ > "$TARGET_USER@$TARGET_HOST:'/volume1/$F/'" \ >>> "$LOGFILE" 2>&1 > > if [ $? -eq 0 ]; then > SUCCESS=1 > echo "===== Completed rsync for folder: $F at $(date) SUCCESS > =====" >> "$LOGFILE" > break > else > RETRY_COUNT=$((RETRY_COUNT+1)) > echo "===== rsync FAILED for folder: $F, retry > $RETRY_COUNT/$MAX_RETRIES at $(date) =====" >> "$LOGFILE" > sleep 5 > fi > done > > if [ $SUCCESS -eq 0 ]; then > echo "===== Folder $F FAILED after $MAX_RETRIES retries at $(date) > =====" >> "$LOGFILE" > fi > done > > echo "All folders processed sequentially. Logs are in $LOGDIR" > > End of script. > > > chmod +x rsync_script.sh > > nohup /root/rsync_script.sh > /volume1/rsync_master.log 2>&1 & > > Thank you. > > Regards, > > Mr. Turritopsis Dohrnii Teo En Ming > Extremely Democratic People's Republic of Singapore > 28 Jan 2026 Wednesday 7.24 pm Singapore Time > > > > > > > -- > Please use reply-all for most replies to avoid omitting the mailing list. > To unsubscribe or change options: > https://lists.samba.org/mailman/listinfo/rsync > Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html -- Please use reply-all for most replies to avoid omitting the mailing list. To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
