comreset error logs are observed as seen below.
comreset errors are seen and device needs to be power cycled to recover.
From host-log messages
2025-09-24T12:31:00.050633+00:00 QFX5110-node logger: Wed Sep 24 12:31:00 UTC 2025 Disk monitoring info: DISK and directory accessibility is running
2025-09-24T12:39:01.217399+00:00 QFX5110-node rsyslogd: [origin software="rsyslogd" swVersion="7.4.4" x-pid="17287" x-info="https://urldefense.com/v3/__http://www.rsyslog.com__;!!NEt6yMaO-gk!EKV4CuqY1ZySpi3DJkU9433mWvrV7TJONULD15BprFfVElm5E_qk6kKHsOLa8DsUyktbRcmv2eA3YQXU07hJQIaE7W8H$ "] rsyslogd was HUPed
2025-09-24T12:40:01+00:00 dcpfe0 logrotate: ALERT exited abnormally with [1]
2025-09-24T12:46:01.580984+00:00 QFX5110-node logger: Wed Sep 24 12:46:01 UTC 2025 Disk monitoring info: DISK and directory accessibility is running
2025-09-24T12:50:01+00:00 dcpfe0 logrotate: ALERT exited abnormally with [1]
2025-09-24T12:51:01.310464+00:00 QFX5110-node rsyslogd: [origin software="rsyslogd" swVersion="7.4.4" x-pid="17287" x-info="https://urldefense.com/v3/__http://www.rsyslog.com__;!!NEt6yMaO-gk!EKV4CuqY1ZySpi3DJkU9433mWvrV7TJONULD15BprFfVElm5E_qk6kKHsOLa8DsUyktbRcmv2eA3YQXU07hJQIaE7W8H$ "] rsyslogd was HUPed
2025-09-24T13:00:01+00:00 dcpfe0 logrotate: ALERT exited abnormally with [1]
2025-09-24T13:01:03.125683+00:00 QFX5110-node logger: Wed Sep 24 13:01:03 UTC 2025 Disk monitoring info: DISK and directory accessibility is running
2025-09-24T13:10:01+00:00 dcpfe0 logrotate: ALERT exited abnormally with [1]
2025-09-24T13:11:24.954059+00:00 QFX5110-node kernel: ata6: hard resetting link
2025-09-24T13:11:30.308532+00:00 QFX5110-node kernel: ata6: link is slow to respond, please be patient (ready=0)
2025-09-24T13:11:35+00:00 dcpfe0 kernel: ata6: hard resetting link
2025-09-24T13:11:40.390538+00:00 QFX5110-node kernel: ata6: link is slow to respond, please be patient (ready=0)
2025-09-24T13:11:45.117895+00:00 QFX5110-node kernel: ata6: hard resetting link
2025-09-24T13:11:50.472531+00:00 QFX5110-node kernel: ata6: link is slow to respond, please be patient (ready=0)
2025-09-24T13:12:20.189951+00:00 QFX5110-node kernel: ata6: limiting SATA link speed to 1.5 Gbps
2025-09-24T13:12:20+00:00 dcpfe0 kernel: ata6: hard resetting link
2025-09-24T13:12:25+00:00 dcpfe0 kernel: ata6.00: disabled
2025-09-24T13:12:25+00:00 dcpfe0 kernel: ata6: EH complete
2025-09-24T13:12:25+00:00 dcpfe0 kernel: sd 5:0:0:0: [sdb] Unhandled error code
2025-09-24T13:12:25+00:00 dcpfe0 kernel: sd 5:0:0:0: [sdb]
2025-09-24T13:12:25+00:00 dcpfe0 kernel: Result: hostbyte=0x04 driverbyte=0x00
2025-09-24T13:12:25+00:00 dcpfe0 kernel: sd 5:0:0:0: [sdb] CDB:
2025-09-24T13:12:25+00:00 dcpfe0 kernel: cdb[0]=0x2a: 2a 00 00 c1 6a 28 00 00 40 00
2025-09-24T13:12:25+00:00 dcpfe0 dcpfe[3728]: SYSIPC:Remote socket shutdown, restart PFE process
From host-log syslog
025-09-24T13:11:13.451022+00:00 QFX5110-node vehostd[8750]: vjunos_vm_state_transition Calling get_next_state for vjuons vjunos0 with current_state=3 current_ret=0
2025-09-24T13:11:13.451034+00:00 QFX5110-node vehostd[8750]: vjunos_get_next_state vjunos transition to next state 3
2025-09-24T13:11:18.550212+00:00 QFX5110-node vehostd[8750]: vjunos_vm_state_transition Calling get_next_state for vjuons vjunos0 with current_state=3 current_ret=0
2025-09-24T13:11:18.550224+00:00 QFX5110-node vehostd[8750]: vjunos_get_next_state vjunos transition to next state 3
2025-09-24T13:11:23.652131+00:00 QFX5110-node vehostd[8750]: vjunos_vm_state_transition Calling get_next_state for vjuons vjunos0 with current_state=3 current_ret=0
2025-09-24T13:11:23.652143+00:00 QFX5110-node vehostd[8750]: vjunos_get_next_state vjunos transition to next state 3
2025-09-24T13:11:24+00:00 dcpfe0 kernel: ata6.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
2025-09-24T13:11:24+00:00 dcpfe0 kernel: ata6.00: failed command: SMART
2025-09-24T13:11:24.782449+00:00 QFX5110-node kernel: ata6.00: cmd b0/d0:01:00:4f:c2/00:00:00:00:00/00 tag 16 pio 512 in
2025-09-24T13:11:24.782466+00:00 QFX5110-node kernel: res 40/00:00:00:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout)
2025-09-24T13:11:24.925984+00:00 QFX5110-node kernel: ata6.00: status: { DRDY }
2025-09-24T13:11:28.751468+00:00 QFX5110-node vehostd[8750]: vjunos_vm_state_transition Calling get_next_state for vjuons vjunos0 with current_state=3 current_ret=0
2025-09-24T13:11:28.751481+00:00 QFX5110-node vehostd[8750]: vjunos_get_next_state vjunos transition to next state 3
2025-09-24T13:11:29.813735+00:00 QFX5110-node vehostd[8750]: node_alive_idle_timer_func: Idle timer 0x7f570c9e4010 got fired RE:192.168.1.2
2025-09-24T13:11:29.813756+00:00 QFX5110-node vehostd[8750]: send_node_alive: Sending node alive to 192.168.1.2 with resync 0
2025-09-24T13:11:29.813770+00:00 QFX5110-node vehostd[8750]: shmp_client_send_data: Sending header (with payload): #012#011Payload length: 357#012#011Opcode: 11#012#011Version: 1#012#011Cookie: 6926624
2025-09-24T13:11:29.813800+00:00 QFX5110-node vehostd[8750]: start_miss_intvl_timer: Setting miss intvl timer to fire after 3 seconds
2025-09-24T13:11:29.814171+00:00 QFX5110-node vehostd[8750]: tcp_client_dispatch: Received 24 bytes on fd 14. Total recvd: 24
2025-09-24T13:11:29.814186+00:00 QFX5110-node vehostd[8750]: shmp_client_recv_event_handler: Received header: #012#011Payload length: 1#012#011Opcode: 27#012#011Version: 1#012#011Cookie: 6926624
2025-09-24T13:11:29.814203+00:00 QFX5110-node vehostd[8750]: tcp_client_dispatch: Received 1 bytes on fd 14. Total recvd: 1
2025-09-24T13:11:29.814216+00:00 QFX5110-node vehostd[8750]: node_alive_rsp_cb: Got ack 0 from RE 192.168.1.2
2025-09-24T13:11:29.814220+00:00 QFX5110-node vehostd[8750]: node_alive_rsp_cb: clearing miss intvl timer
2025-09-24T13:11:29.814226+00:00 QFX5110-node vehostd[8750]: start_idle_timer: Setting idle timer to fire after 20 seconds
2025-09-24T13:11:33.850360+00:00 QFX5110-node vehostd[8750]: vjunos_vm_state_transition Calling get_next_state for vjuons vjunos0 with current_state=3 current_ret=0
2025-09-24T13:11:33.850373+00:00 QFX5110-node vehostd[8750]: vjunos_get_next_state vjunos transition to next state 3
2025-09-24T13:11:35.035954+00:00 QFX5110-node kernel: ata6: COMRESET failed (errno=-16)
2025-09-24T13:11:38.952290+00:00 QFX5110-node vehostd[8750]: vjunos_vm_state_transition Calling get_next_state for vjuons vjunos0 with current_state=3 current_ret=0
2025-09-24T13:11:38.952304+00:00 QFX5110-node vehostd[8750]: vjunos_get_next_state vjunos transition to next state 3
2025-09-24T13:11:44.051180+00:00 QFX5110-node vehostd[8750]: vjunos_vm_state_transition Calling get_next_state for vjuons vjunos0 with current_state=3 current_ret=0
2025-09-24T13:11:44.051194+00:00 QFX5110-node vehostd[8750]: vjunos_get_next_state vjunos transition to next state 3
2025-09-24T13:11:45.117881+00:00 QFX5110-node kernel: ata6: COMRESET failed (errno=-16)
From host-log kern.logs
2025-09-24T09:28:41.957129+00:00 QFX5110-node rsyslogd: -- MARK --
2025-09-24T09:48:42.057168+00:00 QFX5110-node rsyslogd: -- MARK --
2025-09-24T10:08:42.157243+00:00 QFX5110-node rsyslogd: -- MARK --
2025-09-24T10:28:42.187868+00:00 QFX5110-node rsyslogd: -- MARK --
2025-09-24T10:48:42.287942+00:00 QFX5110-node rsyslogd: -- MARK --
2025-09-24T11:08:42.387981+00:00 QFX5110-node rsyslogd: -- MARK --
2025-09-24T11:28:42.488046+00:00 QFX5110-node rsyslogd: -- MARK --
2025-09-24T11:48:42.588118+00:00 QFX5110-node rsyslogd: -- MARK --
2025-09-24T12:08:42.688165+00:00 QFX5110-node rsyslogd: -- MARK --
2025-09-24T12:28:42.788255+00:00 QFX5110-node rsyslogd: -- MARK --
2025-09-24T12:48:42.888293+00:00 QFX5110-node rsyslogd: -- MARK --
2025-09-24T13:08:42.959561+00:00 QFX5110-node rsyslogd: -- MARK --
2025-09-24T13:12:20.189934+00:00 QFX5110-node kernel: ata6: COMRESET failed (errno=-16)
2025-09-24T13:12:25+00:00 dcpfe0 kernel: ata6: COMRESET failed (errno=-16)
2025-09-24T13:12:25+00:00 dcpfe0 kernel: ata6: reset failed, giving up
If power cycle did not recover the device then replacement is required.