oleg340-server: ssh: connect to host oleg340-server port 22: Connection reset by peer

pdsh@oleg340-client: oleg340-server: ssh exited with exit code 255
oleg340-server: Warning: Permanently added 'oleg340-server' (ECDSA) to the list of known hosts.

MGS_OS_ID_LIKE=rhel centos fedora rocky
MGS_OS_VERSION_ID=8.10
MGS_OS_ID=rocky
MGS_OS_VERSION_CODE=134873088
MDS1_OS_VERSION_ID=8.10
MDS1_OS_VERSION_CODE=134873088
MDS1_OS_ID_LIKE=rhel centos fedora rocky
MDS1_OS_ID=rocky
OST1_OS_VERSION_CODE=134873088
OST1_OS_ID_LIKE=rhel centos fedora rocky
OST1_OS_VERSION_ID=8.10
OST1_OS_ID=rocky
CLIENT_OS_ID=rocky
CLIENT_OS_VERSION_CODE=134873088
CLIENT_OS_VERSION_ID=8.10
CLIENT_OS_ID_LIKE=rhel centos fedora rocky
Started at Thu Aug  6 03:34:02 EDT 2026
Lustre is not mounted, trying to do setup ... 
Stopping clients: oleg340-client.virtnet /mnt/lustre (opts:-f)
Stopping clients: oleg340-client.virtnet /mnt/lustre2 (opts:-f)
Stopping /mnt/lustre-mds1 (opts:-f) on oleg340-server
oleg340-server: bash: /usr/bin/umount: Input/output error
pdsh@oleg340-client: oleg340-server: ssh exited with exit code 126