Technical Note: Drive in Read Only mode
Description
NAC services are down due to hard drive being in read only mode. This this state, files are unable to be written.
Examples of responses in a Read-Only file system:
> touch filename1
touch: cannot touch `filename1': Read-only file system
> service dhcpd restart
Shutting down DHCP server rm: cannot remove `/bsc/services/dhcpd/var/state/lib/libnss_dns.so.2': Read-only file system
rm: cannot remove `/bsc/services/dhcpd/var/state/lib/libresolv.so.2': Read-only file system
done
Possible Causes: Disk full, file system corruption, improperly seated hard drive or hard drive failure.
Solution
NAC services are down due to hard drive being in read only mode. This this state, files are unable to be written.
Examples of responses in a Read-Only file system:
> touch filename1
touch: cannot touch `filename1': Read-only file system
> service dhcpd restart
Shutting down DHCP server rm: cannot remove `/bsc/services/dhcpd/var/state/lib/libnss_dns.so.2': Read-only file system
rm: cannot remove `/bsc/services/dhcpd/var/state/lib/libresolv.so.2': Read-only file system
done
Possible Causes: Disk full, file system corruption, improperly seated hard drive or hard drive failure.
Solution
1. Verify disk space:
df -h
2. Ensure configuration files are copied to a remote server (in case a recovery is necessary). If remote backups are not already scheduled, they can be uploaded using SCP or to a FTP server.
3. Power down the appliance.
4. Re-seat the hard drive.
5. Power up the appliance.
If database is corrupt, restore the last database.
2. Ensure configuration files are copied to a remote server (in case a recovery is necessary). If remote backups are not already scheduled, they can be uploaded using SCP or to a FTP server.
3. Power down the appliance.
4. Re-seat the hard drive.
5. Power up the appliance.
If database is corrupt, restore the last database.