Read-only error (YottaDB 2.06)

[ed de moel]

I'm setting up a new system, and I'm getting this error (sporadically):

%YDB-E-RELINKCTLERR, Error with relink control structure for $ZROUTINES directory /home/ed-de-moel/.yottadb/r2.06_x86_64/o/utf8
%YDB-E-SYSCALL, Error received from system call open() of file /home/ed-de-moel/tmp/ydb-relinkctl-824f1181488ffb2d944d488bf289d42c failed -- called from module /Distrib/YottaDB/R206/sr_unix/relinkctl.c at line 357
%SYSTEM-E-ENO30, Read-only file system

Seems pretty straight-forward: it seems to tell me that I need to have write permission for that directory, but:

ed-de-moel@WebGlyph:~$ ls -ltrA /home/ed-de-moel/.yottadb/r2.06_x86_64/o
total 4
drwxrwxrwx 2 ed-de-moel ed-de-moel 4096 Jul 12 00:11 utf8
ed-de-moel@WebGlyph:~$

that directory has write permission (maybe even for too many people)...
What am I missing?

Thanks in advance,
Ed

[Shane Dewitt]

It is talking about your filesystem being mounted Read only not the directory. This typically happens after a crash.

mount -v

/dev/sda2 on /boot type ext4 (ro,relatime,seclabel,stripe=64,data=ordered)

Look for a filesystem that is mounted readonly. Remount the read only filesystem as read/write. Example:

sudo mount -o remount,rw /dev/sda2 /boot

If your root (/) filesystem is readonly, you will have to reboot. 

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[Ed de Moel]

I'm afraid not...

It works fine when I'm using the command line interface,
It only happens in background processes started by apache

But I did try that too, at first....

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[Shane Dewitt]

Is selinux enforcing? If so that is probably the culprit.

Sent from my iPhone

On Jul 13, 2026, at 3:24 PM, Ed de Moel <dem...@jacquardsystems.com> wrote:



[Ed de Moel]

Running Ubuntu...

Trying this anyway, but doesn't seem to be it.

Thanks anyway,
Ed

[Shane Dewitt]

What did sestatus say?

 

Virus-free.www.avg.com

[Ed de Moel]

sestatus tells me selinux is disabled

[Shane Dewitt]

Hi Ed,

What are the permissions on this directory?

/home/ed-de-moel/tmp/

[Jens Wulf]

This sounds like the apache user (www-data?) has not write-rights on one or more of the needed files.

maybe sudo usermod -aG ed-de-moel www-data helps

[K.S. Bhaskar]

Ed -

Some questions:

• What is the output of: ls -ld /home/ed-de-moel/ /home/ed-de-moel/.yottadb/
• What are the uid and gid of the process reporting the error?

Regards

- Bhaskar

[ed de moel]

All: thanks for the suggestions.
The issue had nothing to do with YottaDB or Linux,
the computer I used had a faulty memory.

I'm using a different computer now, and all works as expected.

Thanks again,
Ed