Bash process substitution for --defaults-file and --defaults-extra-file args doesn't work anymore
General
Escalation
General
Escalation
Description
Hello,
With xtrabackup 2.4, bash process substitution was working. It doesn't work anymore with the versions 8.0 and 8.4.
To reproduce the problem:
Results:
With mysql 5.7 / xtrabackup 2.4.4:
With mysql 8.0 / xtrabackup 8.0.35-32:
With mysql 8.4 / xtrabackup 8.4.0-2:
Environment
Tested on Ubuntu 22.04.
Activity
Jean-Luc Derrien
March 10, 2025 at 2:20 PM
Hello ,
Sure, in fact I already use this workaround.
Thank you for the explaination. 👍
Satya Bodapati
March 10, 2025 at 10:31 AM
Hello, this is because of the extra validation of parameters. In 8.0, the defaults file passed is opened and closed twice. So after the first opening and close, incase of the file descriptor, the first close() makes the descriptor unavailable for the second read.
Can you please workaround the issue by redirecting to a temporary file and pass it to xtrabackup?
Medium
Hello,
With xtrabackup 2.4, bash process substitution was working. It doesn't work anymore with the versions 8.0 and 8.4.
To reproduce the problem:
Results:
With mysql 5.7 / xtrabackup 2.4.4:
With mysql 8.0 / xtrabackup 8.0.35-32:
With mysql 8.4 / xtrabackup 8.4.0-2: