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Description of problem:
** I am cloning this BZ from BZ #1779813 which was for RHEL 7, as the customer has confirmed that the fix is NOT needed in RHEL 7 but is now needed in RHEL 8 I am creating this new BZ to track changes in RHEL 8 **
A customer has a SAS Expander that expands their devices out to a name longer than 256 characters when the path is exploded.
# systemd-escape /devices/pci0000:00/0000:00:02.0/0000:02:00.0/host10/port-10:0/expander-10:0/port-10:0:0/expander-10:1/port-10:1:0/expander-10:2/port-10:2:0/expander-10:3/port-10:3:13/end_device-10:3:13/target10:0:89/10:0:89:0/scsi_device/10:0:89:0 | wc
1 1 263
This causes the systemd to fail on the device with:
systemd: Failed to set up device unit: Invalid argument
And then the systemd job times out and the mounts fail.
This value appears to be arbitrarily increased over time. We gave the customer a test patch that raised UNIT_NAME_MAX in shared/unit-name.h to 512 and it resolved their issue.
Requesting that this value be raised to 512.
Version-Release number of selected component (if applicable):
systemd-239-68.el8.x86_64
How reproducible:
Every time if the device name is over 256 characters.
Steps to Reproduce:
1. Attach a device with a path over 256 characters.
2. Boot the server
3. Check the logs for errors.
Actual results:
systemd errors with:
systemd: Failed to set up device unit: Invalid argument
And times out the device.
Expected results:
System boots without any issues.
Additional info: