Hi Team,
Any solution for the issue that I pointed here ? I tried below change as well
1) Changed the source code “/usr/lib/python3/dist-packages/lava_dispatcher/deployment_data.py”  with
“/var/lava-%s “ custom path 
debian = {
    "TESTER_PS1": r"linaro-test [rc=$(echo \$?)]# ",
    "TESTER_PS1_PATTERN": r"linaro-test \[rc=(\d+)\]# ",
    "TESTER_PS1_INCLUDES_RC": True,
    "boot_cmds": "boot_cmds",
    "line_separator": "\n",
    # for lava-test-shell
    "distro": "debian",
    "tar_flags": "--warning no-timestamp",
    "lava_test_sh_cmd": "/bin/bash",
    "lava_test_dir": "/var/lava-%s",
    "lava_test_results_part_attr": "root_part",
    "lava_test_results_dir": "/var/lava-%s",
    "lava_test_shell_file": "~/.bashrc",
}
Status of the change : The overlay unpack is not happening in the specific directory that we applied to 
lava_test_dir  and  lava_test_results_dir.
I would appreciate it if you could send the solution of the issue that I raised here.
Regards,
Sarath P T
From: P T, Sarath
Sent: 20 February 2023 18:35
To: 'lava-users@lists.lavasoftware.org' <lava-users@lists.lavasoftware.org>
Subject: Not able to unpack the overlay other than "/" directory
Hi Team,
Facing an issue while unpack the overlay in some custom location other than “/” directory. From the LAVA linaro documentation I came to know that the -C / command to tar is essential or the test shell will not be able to start. Below are
 the issues that I am facing because of this.
transfer_overlay:
      download_command: cd /tmp; wget
      unpack_command: tar -C /tmp -xzf
Below I am attaching the test log from LAVA.

How we can solve the read only filesystem image issue for unpacking the overlay other than “/” directory ?
Regards, 
Sarath P T