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ReadyNAS 5

ReadyNAS Duo V2

Custom ROM

Hotfix SACK CVE-2019-11477

Add to /etc/init.d/readynas_startup near start

echo 0 > /proc/sys/net/ipv4/tcp_sack
echo 0 > /proc/sys/net/ipv4/tcp_dsack
echo 0 > /proc/sys/net/ipv4/tcp_timestamps

* MiniDLNA don't like this!

Max HDD capacity

8TB is tested by me. PMR no restrictions, SMR - JBOD only.
You can set RSync (Backup) in JBOD anyway → this can be better solution than RAID1

Jumbo Frames


ifconfig eth0 mtu 1600

Don't use more, kernel driver cannot work properly with HW acceleration enabled. ReadyNAS DuoV2 can do 97MB/s (776Mbit/s) reads from Samba

Samba Log level


log level = 1

ext3 Format

(much faster than ext4 - you can fill up to 100% disk space)
-i bytes per inode (4096-65536)

mkfs.ext3 -b 4096 -i 16384 /dev/d/d
tune2fs -i0 -c -1 -o user_xattr,acl /dev/d/d

tune2fs -o journal_data_writeback

Remove root reserved space

tune2fs -m 0 /dev/d/d

Performance Tuning

Mount fstab (UPS recommended)

/dev/c/c        /c      ext3    defaults,acl,user_xattr,noatime,nodiratime,nobh,commit=40,data=writeback       0 2
/dev/c/c        /c      ext4    defaults,acl,user_xattr,noatime,nodiratime,nobh,jqfmt=vfsv0,data=writeback,oldalloc       0 2

Little tuning in /etc/init.d/readynas_startup put near start

echo deadline >/sys/block/sda/queue/scheduler
echo deadline >/sys/block/sdb/queue/scheduler

Turn off quotas! Don't start cups! (is_rackmount=1) :-)

USB Mounts config



/etc/frontview/addons/bin/APPGENIE/cp.d/cpinst/ –> put exit 0 at start
or remove it completely rm -r /etc/frontview/addons/bin/APPGENIE/

Transmission Message Level

message-level: 1


grep -q -F 'root_container=B' /etc/minidlna.conf || echo 'root_container=B' >>/etc/minidlna.conf
grep -q -F 'strict_dlna' /etc/minidlna.conf || echo 'strict_dlna=no' >>/etc/minidlna.conf
sed -i '/album_art_names/d' /etc/minidlna.conf


Enable Root Access This enable SSH access to ReadyNAS
HTop HTop bash utility
Enable MySQL Access Enable access to built in MySQL 5.1.49
OwnCloud 8.0.2 ARM OwnCloud for ReadyNAS - ARM
PHP 5.4.3 ARM Install PHP 5.4.3
Transmission 2.92 ARM Bittorent Client for ReadyNAS5
storage/readynas.txt · Last modified: 2023/02/17 12:00 by Jan Forman