Did a fresh alpine container install on 3.20 with amd64
after the initial setup-alpine I did:

mkdir /root/backup
apk add mariadb mariadb-backup mariadb-client mariadb-openrc
/etc/init.d/mariadb setup
/etc/init.d/mariadb start
mariabackup --backup -u root -p --targetdir=/root/backup/

Result:
[00] 2024-06-04 08:58:55 Connecting to MariaDB server host: localhost,
user: root, password: set, port: not set, socket: not set
[00] 2024-06-04 08:58:55 Using server version 10.11.8-MariaDB
mariabackup based on MariaDB server 10.11.8-MariaDB Linux (x86_64)
[00] 2024-06-04 08:58:55 uses posix_fadvise().
[00] 2024-06-04 08:58:55 cd to /var/lib/mysql/
[00] 2024-06-04 08:58:55 open files limit requested 0, set to 1024
[00] 2024-06-04 08:58:55 mariabackup: using the following InnoDB configuration:
..
[00] 2024-06-04 08:58:55 Stop scanning aria tables.
[00] 2024-06-04 08:58:55 Copying ./mysql/transaction_registry.ibd to
/root/xtrabackup_backupfiles/mysql/transaction_registry.ibd
Segmentation fault

with strace mariabackup --backup -u root -p --targetdir=/root/backup/
writev(2, [{iov_base="[00] 2024-06-04 09:20:42 Acquiri"...,
iov_len=51}, {iov_base=NULL, iov_len=0}], 2[00] 2024-06-04 09:20:42
Acquiring BACKUP LOCKS...
) = 51
poll([{fd=6, events=POLLIN|POLLPRI}], 1, 0) = 0 (Timeout)
sendto(6, "\36\0\0\0\3SET SESSION wsrep_sync_wait"..., 34, 0, NULL, 0) = 34
recvfrom(6, "\7\0\0\1\0\0\0\2\0\0\0", 16384, 0, NULL, NULL) = 11
poll([{fd=6, events=POLLIN|POLLPRI}], 1, 0) = 0 (Timeout)
sendto(6, "\23\0\0\0\3BACKUP STAGE START", 23, 0, NULL, 0) = 23
recvfrom(6, "\7\0\0\1\0\0\0\2\0\0\0", 16384, 0, NULL, NULL) = 11
futex(0x7f1cbac41904, FUTEX_WAKE_PRIVATE, 1) = 1
nanosleep({tv_sec=0, tv_nsec=1000000}, [00] 2024-06-04 09:20:42
Copying ./mysql/transaction_registry.ibd to
/root/xtrabackup_backupfiles/mysql/transaction_registry.ibd
0x7ffd2c488300) = 0
nanosleep({tv_sec=0, tv_nsec=1000000}, 0x7ffd2c488300) = 0
nanosleep({tv_sec=0, tv_nsec=1000000}, 0x7ffd2c488300) = 0
nanosleep({tv_sec=0, tv_nsec=1000000}, 0x7ffd2c488300) = 0
nanosleep({tv_sec=0, tv_nsec=1000000},  <unfinished ...>) = ?
+++ killed by SIGSEGV +++
Segmentation fault

Did this in a lxc container on WSL and on RH8.9  both got the Segmentation fault

Did this also on 3.19 amd64  backup went ok
Did this also on 3.20 arm64   backup went ok

Hi Hans!
I can confirm this (tested in podman containers with):
| podman run --name init-test --rm -d fauust/docker-systemd:alpine-3.20
| podman exec -it init-test sh
| mkdir /root/backup
| apk add mariadb mariadb-backup mariadb-client mariadb-openrc
| /etc/init.d/mariadb setup
| /etc/init.d/mariadb start
| mariabackup --backup -u root -p --targetdir=/root/backup/

I could not find anything upstream
(https://jira.mariadb.org/browse/MDEV-20189?jql=text%20~%20%22mariabackup%20segfault%22)
but my first guess would be that this does not comes from Alpine
packaging. So, you might consider opening a jira issue there?

Cheers!

Hans Harder <hans@atbas.org>,
04/06/2024 – 09:24:45 (+0200):

> Did a fresh alpine container install on 3.20 with amd64
> after the initial setup-alpine I did:
> 
> mkdir /root/backup
> apk add mariadb mariadb-backup mariadb-client mariadb-openrc
> /etc/init.d/mariadb setup
> /etc/init.d/mariadb start
> mariabackup --backup -u root -p --targetdir=/root/backup/
> 
> Result:
> [00] 2024-06-04 08:58:55 Connecting to MariaDB server host: localhost,
> user: root, password: set, port: not set, socket: not set
> [00] 2024-06-04 08:58:55 Using server version 10.11.8-MariaDB
> mariabackup based on MariaDB server 10.11.8-MariaDB Linux (x86_64)
> [00] 2024-06-04 08:58:55 uses posix_fadvise().
> [00] 2024-06-04 08:58:55 cd to /var/lib/mysql/
> [00] 2024-06-04 08:58:55 open files limit requested 0, set to 1024
> [00] 2024-06-04 08:58:55 mariabackup: using the following InnoDB configuration:
> ..
> [00] 2024-06-04 08:58:55 Stop scanning aria tables.
> [00] 2024-06-04 08:58:55 Copying ./mysql/transaction_registry.ibd to
> /root/xtrabackup_backupfiles/mysql/transaction_registry.ibd
> Segmentation fault
> 
> with strace mariabackup --backup -u root -p --targetdir=/root/backup/
> writev(2, [{iov_base="[00] 2024-06-04 09:20:42 Acquiri"...,
> iov_len=51}, {iov_base=NULL, iov_len=0}], 2[00] 2024-06-04 09:20:42
> Acquiring BACKUP LOCKS...
> ) = 51
> poll([{fd=6, events=POLLIN|POLLPRI}], 1, 0) = 0 (Timeout)
> sendto(6, "\36\0\0\0\3SET SESSION wsrep_sync_wait"..., 34, 0, NULL, 0) = 34
> recvfrom(6, "\7\0\0\1\0\0\0\2\0\0\0", 16384, 0, NULL, NULL) = 11
> poll([{fd=6, events=POLLIN|POLLPRI}], 1, 0) = 0 (Timeout)
> sendto(6, "\23\0\0\0\3BACKUP STAGE START", 23, 0, NULL, 0) = 23
> recvfrom(6, "\7\0\0\1\0\0\0\2\0\0\0", 16384, 0, NULL, NULL) = 11
> futex(0x7f1cbac41904, FUTEX_WAKE_PRIVATE, 1) = 1
> nanosleep({tv_sec=0, tv_nsec=1000000}, [00] 2024-06-04 09:20:42
> Copying ./mysql/transaction_registry.ibd to
> /root/xtrabackup_backupfiles/mysql/transaction_registry.ibd
> 0x7ffd2c488300) = 0
> nanosleep({tv_sec=0, tv_nsec=1000000}, 0x7ffd2c488300) = 0
> nanosleep({tv_sec=0, tv_nsec=1000000}, 0x7ffd2c488300) = 0
> nanosleep({tv_sec=0, tv_nsec=1000000}, 0x7ffd2c488300) = 0
> nanosleep({tv_sec=0, tv_nsec=1000000},  <unfinished ...>) = ?
> +++ killed by SIGSEGV +++
> Segmentation fault
> 
> Did this in a lxc container on WSL and on RH8.9  both got the Segmentation fault
> 
> Did this also on 3.19 amd64  backup went ok
> Did this also on 3.20 arm64   backup went ok

-- 
Faustin
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