I know this relates to an old version of Knoppix, but after remastering the os and upgrading the kernel to 2.6.31.6 (and compiling aufs as part of that) i'm not able to remount the /ramdisk branch as read-only upon boot. Or after in init 2. If anyone can advise on this, it'd be much appreciated.
When running the script below:
/usr/sbin/knoppix-image /mnt/sda1/knoppix.img
The following line is failing:
mount -o remount,noplink,prepend:/KNOPPIX.IMG=rw,mod:/ramdisk=ro /UNIONFS
The following line succeeds fine:
mount -o remount,noplink,prepend:/KNOPPIX.IMG=rw,mod:/ramdisk=rw /UNIONFS
I get mount: /UNIONFS is busy error.
I've deleted whiteout files on /ramdisk beforehand with:
find /ramdisk -iname .wh.\*.plnk -exec rm -Rfv {} \;
I've run fuser -m -v /ramdisk and used the -k option to kill processes off.
I've also run lsof /ramdisk and killed associated processes.
Distilling the command down to the following fails:
mount -t tmpfs -o remount,ro /ramdisk /ramdisk
The following command succeeds:
mount -t tmpfs -o remount,rw /ramdisk /ramdisk
In /etc/mtab /ramdisk has mode 755 0 0.
If you can help please advise.
Dell PowerEdge R730xd Server 2.60Ghz 32-Core 64GB 800GB SSD Debian Linux
$836.80
Watchguard XCS 570 Firewall SuperMicro 1U Server Intel 4GB VPN Router LINUX 🍁
$145.79
PFSENSE 15" Depth Server Router Firewall Supermicro X11SSH-F E3-1240 V5 32GB RAM
$382.00
1U BareMetal pfsense opnsense Router Firewall DNS Server 6x 10GB Ethernet Ports
$149.00
Domino Lotus Server 5.0.7 for OS/2 WSeB, RH Linux 6, Solaris, AIX, HP-UX, Win NT
$60.00
Red Hat Enterprise Linux 5 Server - New and Sealed
$16.99
2 x HP ProLiant BL460c (447707-B21) Blade Servers No RAM No HDD
$30.00
IBM E850 Power8 2x 12C 3.02GHz 512Gb 1.8Tb SAS 10GbE 16Gb Linux Server 8408-E8E
$674.96
IBM System X 3250 M5 Single Xeon Quad Core E3-1220 v3 @3.1GHz,8GB RAM,Linux SUSE
$159.00
8x 240GB SSD 1U Rackmount Deduplication Compression Backup RAID Server X10DRW-iT
$499.00