The keyutils fix alone didn't resolve it — confirmed live with keyutils
already installed, the same error persisted. Root cause: the hardcoded
iocharset=utf8 mount option requires the kernel's nls_utf8 module, which
some kernels don't ship at all (confirmed live: `modprobe nls_utf8` on a
stock Ubuntu 6.8.0-137-generic VPS kernel returns "FATAL: Module
nls_utf8 not found" — not loadable, not built in). Every such mount
fails with errno 79 (ELIBACC) regardless of credentials, which is why
this recurred identically after the keyutils fix.
Both vpn-data-mount.sh and mount-network-drive.sh now probe with a
harmless `modprobe nls_utf8` before adding the option, and mount without
it (falling back to the kernel's build-time nls_default) with a clear
warning if the module isn't available, instead of hard-failing.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01H4k6J1qXXyYxhGEgnJaMvn
Errno 79 is ELIBACC ("Can not access a needed shared library"), not
ENOKEY as previously assumed — mount.cifs prints glibc's literal
strerror() text for it. It recurred with valid, correctly-captured
credentials because the real cause was never authentication: cifs-utils
hard-depends on the libkeyutils1 library but only Recommends the
keyutils package itself, which ships /sbin/request-key and the
/etc/request-key.d/*.conf handlers the kernel's upcall path invokes.
Minimal cloud VPS images commonly disable install-recommends, so
`apt-get install cifs-utils` alone silently skips it and every mount —
guest or fully credentialed — fails identically.
Install keyutils explicitly wherever cifs-utils is installed:
services/base.sh's unconditional package list, vpn-data-mount.sh's
lazy install-on-mount path, and tools/mount-network-drive.sh's SMB
branch.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01H4k6J1qXXyYxhGEgnJaMvn
Allows editing share path, mount point, and options for an existing
fstab entry. CIFS entries also offer credential update (backs up the
old credentials file before overwriting). Backs up fstab before any
change and offers immediate remount to apply.
https://claude.ai/code/session_014CCYqVwW6d6f5dw1qRokYt
Interactive script to mount network drives and persist them in /etc/fstab:
- SMB/CIFS: prompts for share path, mount point, credentials (saved to
/etc/samba/credentials.<name> at 600/root), SMB version
- NFS: prompts for export path, mount point, NFS version
- Tests the mount before writing fstab
- Backs up /etc/fstab before any edit
- Remove flow: unmounts, removes fstab entry, optionally removes creds file
- Shows currently mounted network shares and fstab entries
- Uses nofail + _netdev so a missing share doesn't block boot
https://claude.ai/code/session_014CCYqVwW6d6f5dw1qRokYt
Claude