TOPIC:

We have from time to time messages like this in the kernel.log which will be comunicated also with an alert e-mail:


May 29 00:58:24 IT1XCP-NG-MASTER1 kernel: [899509.555039] drbd iscsi1: PingAck did not arrive in time.
May 29 00:58:24 IT1XCP-NG-MASTER1 kernel: [899509.555070] drbd iscsi1: peer( Secondary -> Unknown ) conn( Connected -> NetworkFailure ) pdsk( UpToDate -> DUnknown )
May 29 00:58:24 IT1XCP-NG-MASTER1 kernel: [899509.555157] block drbd1: new current UUID 7687756A665036FB:F83BCEC795CC03C1:C083053F8A6C75B3:C082053F8A6C75B3
May 29 00:58:24 IT1XCP-NG-MASTER1 kernel: [899509.555180] drbd iscsi1: ack_receiver terminated
May 29 00:58:24 IT1XCP-NG-MASTER1 kernel: [899509.555182] drbd iscsi1: Terminating drbd_a_iscsi1
May 29 00:58:24 IT1XCP-NG-MASTER1 kernel: [899509.611336] drbd iscsi1: Connection closed
May 29 00:58:24 IT1XCP-NG-MASTER1 kernel: [899509.611462] drbd iscsi1: conn( NetworkFailure -> Unconnected )
May 29 00:58:24 IT1XCP-NG-MASTER1 kernel: [899509.611464] drbd iscsi1: receiver terminated
May 29 00:58:24 IT1XCP-NG-MASTER1 kernel: [899509.611466] drbd iscsi1: Restarting receiver thread
May 29 00:58:24 IT1XCP-NG-MASTER1 kernel: [899509.611467] drbd iscsi1: receiver (re)started
May 29 00:58:24 IT1XCP-NG-MASTER1 kernel: [899509.611473] drbd iscsi1: conn( Unconnected -> WFConnection )
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.195037] drbd iscsi1: Handshake successful: Agreed network protocol version 101
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.195041] drbd iscsi1: Feature flags enabled on protocol level: 0x7 TRIM THIN_RESYNC WRITE_SAME.
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.195172] drbd iscsi1: Peer authenticated using 20 bytes HMAC
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.195214] drbd iscsi1: conn( WFConnection -> WFReportParams )
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.195226] drbd iscsi1: Starting ack_recv thread (from drbd_r_iscsi1 [6884])
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.259015] block drbd1: drbd_sync_handshake:
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.259021] block drbd1: self 7687756A665036FB:F83BCEC795CC03C1:C083053F8A6C75B3:C082053F8A6C75B3 bits:0 flags:0
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.259024] block drbd1: peer F83BCEC795CC03C0:0000000000000000:C083053F8A6C75B2:C082053F8A6C75B3 bits:0 flags:0
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.259027] block drbd1: uuid_compare()=1 by rule 70
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.259032] block drbd1: peer( Unknown -> Secondary ) conn( WFReportParams -> WFBitMapS ) pdsk( DUnknown -> Consistent )
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.283816] block drbd1: send bitmap stats [Bytes(packets)]: plain 0(0), RLE 23(1), total 23; compression: 100.0%
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.311858] block drbd1: receive bitmap stats [Bytes(packets)]: plain 0(0), RLE 23(1), total 23; compression: 100.0%
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.311864] block drbd1: helper command: /sbin/drbdadm before-resync-source minor-1
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.316035] block drbd1: helper command: /sbin/drbdadm before-resync-source minor-1 exit code 0 (0x0)
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.316049] block drbd1: conn( WFBitMapS -> SyncSource ) pdsk( Consistent -> Inconsistent )
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.316063] block drbd1: Began resync as SyncSource (will sync 0 KB [0 bits set]).
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.316143] block drbd1: updated sync UUID 7687756A665036FB:F83CCEC795CC03C1:F83BCEC795CC03C1:C083053F8A6C75B3
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.324855] block drbd1: Resync done (total 1 sec; paused 0 sec; 0 K/sec)
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.324859] block drbd1: updated UUIDs 7687756A665036FB:0000000000000000:F83CCEC795CC03C1:F83BCEC795CC03C1
May 29 00:58:25 IT1XCP-NG-MASTER1 kernel: [899510.324863] block drbd1: conn( SyncSource -> Connected ) pdsk( Inconsistent -> UpToDate )

Another example:
Jun 21 18:19:01 IT1XCP-NG-MASTER1 kernel: [2949089.169148] drbd iscsi1: PingAck did not arrive in time.
Jun 21 18:19:01 IT1XCP-NG-MASTER1 kernel: [2949089.169178] drbd iscsi1: peer( Secondary -> Unknown ) conn( Connected -> NetworkFailure ) pdsk( UpToDate -> DUnknown )
Jun 21 18:19:01 IT1XCP-NG-MASTER1 kernel: [2949089.169271] block drbd1: new current UUID 96618EE2E011BCAF:F7A9A8798BAF86CF:187BFDCE74808FD9:187AFDCE74808FD9
Jun 21 18:19:01 IT1XCP-NG-MASTER1 kernel: [2949089.169308] drbd iscsi1: ack_receiver terminated
Jun 21 18:19:01 IT1XCP-NG-MASTER1 kernel: [2949089.169311] drbd iscsi1: Terminating drbd_a_iscsi1
Jun 21 18:19:01 IT1XCP-NG-MASTER1 kernel: [2949089.237400] drbd iscsi1: Connection closed
Jun 21 18:19:01 IT1XCP-NG-MASTER1 kernel: [2949089.237492] drbd iscsi1: conn( NetworkFailure -> Unconnected )
Jun 21 18:19:01 IT1XCP-NG-MASTER1 kernel: [2949089.237494] drbd iscsi1: receiver terminated
Jun 21 18:19:01 IT1XCP-NG-MASTER1 kernel: [2949089.237495] drbd iscsi1: Restarting receiver thread
Jun 21 18:19:01 IT1XCP-NG-MASTER1 kernel: [2949089.237496] drbd iscsi1: receiver (re)started
Jun 21 18:19:01 IT1XCP-NG-MASTER1 kernel: [2949089.237500] drbd iscsi1: conn( Unconnected -> WFConnection )
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.781184] drbd iscsi1: Handshake successful: Agreed network protocol version 101
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.781187] drbd iscsi1: Feature flags enabled on protocol level: 0x7 TRIM THIN_RESYNC WRITE_SAME.
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.781502] drbd iscsi1: Peer authenticated using 20 bytes HMAC
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.781522] drbd iscsi1: conn( WFConnection -> WFReportParams )
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.781524] drbd iscsi1: Starting ack_recv thread (from drbd_r_iscsi1 [6884])
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.825144] block drbd1: drbd_sync_handshake:
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.825149] block drbd1: self 96618EE2E011BCAF:F7A9A8798BAF86CF:187BFDCE74808FD9:187AFDCE74808FD9 bits:0 flags:0
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.825152] block drbd1: peer F7A9A8798BAF86CE:0000000000000000:187BFDCE74808FD8:187AFDCE74808FD9 bits:0 flags:0
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.825155] block drbd1: uuid_compare()=1 by rule 70
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.825161] block drbd1: peer( Unknown -> Secondary ) conn( WFReportParams -> WFBitMapS ) pdsk( DUnknown -> Consistent )
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.859020] block drbd1: send bitmap stats [Bytes(packets)]: plain 0(0), RLE 23(1), total 23; compression: 100.0%
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.883539] block drbd1: receive bitmap stats [Bytes(packets)]: plain 0(0), RLE 23(1), total 23; compression: 100.0%
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.883543] block drbd1: helper command: /sbin/drbdadm before-resync-source minor-1
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.888002] block drbd1: helper command: /sbin/drbdadm before-resync-source minor-1 exit code 0 (0x0)
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.888011] block drbd1: conn( WFBitMapS -> SyncSource ) pdsk( Consistent -> Inconsistent )
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.888020] block drbd1: Began resync as SyncSource (will sync 0 KB [0 bits set]).
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.888067] block drbd1: updated sync UUID 96618EE2E011BCAF:F7AAA8798BAF86CF:F7A9A8798BAF86CF:187BFDCE74808FD9
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.897282] block drbd1: Resync done (total 1 sec; paused 0 sec; 0 K/sec)
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.897284] block drbd1: updated UUIDs 96618EE2E011BCAF:0000000000000000:F7AAA8798BAF86CF:F7A9A8798BAF86CF
Jun 21 18:19:02 IT1XCP-NG-MASTER1 kernel: [2949089.897287] block drbd1: conn( SyncSource -> Connected ) pdsk( Inconsistent -> UpToDate )

I am getting alert messages via e-mail but I do not get a message when the problem has been automatically resolved.

Is this something to be expected?