Error de DRBD

Comando "dmesg" del NODO 1 (Primario)

[   25.206992] d-con export: Starting worker thread (from drbdsetup [976])
[   25.216096] block drbd0: disk( Diskless -> Attaching )
[   25.216255] d-con export: Method to ensure write ordering: flush
[   25.216259] block drbd0: max BIO size = 1048576
[   25.216263] block drbd0: drbd_bm_resize called with capacity == 10483320
[   25.216323] block drbd0: resync bitmap: bits=1310415 words=20476 pages=40
[   25.216326] block drbd0: size = 5119 MB (5241660 KB)
[   25.226450] block drbd0: bitmap READ of 40 pages took 2 jiffies
[   25.226562] block drbd0: recounting of set bits took additional 0 jiffies
[   25.226565] block drbd0: 0 KB (0 bits) marked out-of-sync by on disk bit-map.
[   25.226573] block drbd0: disk( Attaching -> UpToDate )
[   25.226576] block drbd0: attached to UUIDs D0DC01583124570A:0000000000000000:0E4124C4A286E820:0000000000000004
[   25.416111] d-con export: conn( StandAlone -> Unconnected )
[   25.416130] d-con export: Starting receiver thread (from drbd_w_export [977])
[   25.420181] d-con export: receiver (re)started
[   25.420195] d-con export: conn( Unconnected -> WFConnection )
[   28.828197] d-con export: Handshake successful: Agreed network protocol version 101
[   28.828243] d-con export: conn( WFConnection -> WFReportParams )
[   28.828246] d-con export: Starting asender thread (from drbd_r_export [981])
[   28.834656] block drbd0: drbd_sync_handshake:
[   28.834664] block drbd0: self D0DC01583124570A:0000000000000000:0E4124C4A286E820:0000000000000004 bits:0 flags:0
[   28.834668] block drbd0: peer D0DC01583124570A:0000000000000000:0E4124C4A286E820:0000000000000004 bits:0 flags:0
[   28.834671] block drbd0: uuid_compare()=0 by rule 40
[   28.834681] block drbd0: peer( Unknown -> Secondary ) conn( WFReportParams -> Connected ) pdsk( DUnknown -> UpToDate )
[   29.651569] init: plymouth-upstart-bridge main process ended, respawning
[   86.363995] random: nonblocking pool is initialized
[  120.006297] block drbd0: role( Secondary -> Primary )
[  203.011115] EXT4-fs (drbd0): mounted filesystem with ordered data mode. Opts: (null)
[  330.449707] block drbd0: State change failed: Device is held open by someone
[  330.451832] block drbd0:   state = { cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate r----- }
[  330.452024] block drbd0:  wanted = { cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate r----- }
[  349.422221] block drbd0: role( Primary -> Secondary )
[  349.422253] block drbd0: bitmap WRITE of 0 pages took 0 jiffies
[  349.423022] block drbd0: 0 KB (0 bits) marked out-of-sync by on disk bit-map.
[  349.484498] d-con export: peer( Secondary -> Unknown ) conn( Connected -> Disconnecting ) pdsk( UpToDate -> DUnknown )
[  349.484509] d-con export: asender terminated
[  349.484510] d-con export: Terminating drbd_a_export
[  349.491991] d-con export: Connection closed
[  349.492013] d-con export: conn( Disconnecting -> StandAlone )
[  349.492043] d-con export: receiver terminated
[  349.492047] d-con export: Terminating drbd_r_export
[  349.492270] block drbd0: disk( UpToDate -> Failed )
[  349.492332] block drbd0: bitmap WRITE of 0 pages took 0 jiffies
[  349.498589] block drbd0: 0 KB (0 bits) marked out-of-sync by on disk bit-map.
[  349.498602] block drbd0: disk( Failed -> Diskless )
[  349.498703] block drbd0: drbd_bm_resize called with capacity == 0
[  349.498714] d-con export: Terminating drbd_w_export
[  887.927222] d-con export: Starting worker thread (from drbdsetup [1345])
[  887.929460] block drbd0: disk( Diskless -> Attaching )
[  887.929553] d-con export: Method to ensure write ordering: flush
[  887.929557] block drbd0: max BIO size = 1048576
[  887.929563] block drbd0: drbd_bm_resize called with capacity == 10483320
[  887.929706] block drbd0: resync bitmap: bits=1310415 words=20476 pages=40
[  887.929710] block drbd0: size = 5119 MB (5241660 KB)
[  887.940985] block drbd0: bitmap READ of 40 pages took 3 jiffies
[  887.941150] block drbd0: recounting of set bits took additional 0 jiffies
[  887.941154] block drbd0: 0 KB (0 bits) marked out-of-sync by on disk bit-map.
[  887.941162] block drbd0: disk( Attaching -> UpToDate )
[  887.941166] block drbd0: attached to UUIDs D0DC01583124570A:0000000000000000:0E4124C4A286E820:0000000000000004
[  887.960115] d-con export: conn( StandAlone -> Unconnected )
[  887.960132] d-con export: Starting receiver thread (from drbd_w_export [1346])
[  887.963617] d-con export: receiver (re)started
[  887.963661] d-con export: conn( Unconnected -> WFConnection )
[  905.360208] d-con export: Handshake successful: Agreed network protocol version 101
[  905.360254] d-con export: conn( WFConnection -> WFReportParams )
[  905.360257] d-con export: Starting asender thread (from drbd_r_export [1349])
[  905.361133] block drbd0: drbd_sync_handshake:
[  905.361144] block drbd0: self D0DC01583124570A:0000000000000000:0E4124C4A286E820:0000000000000004 bits:0 flags:0
[  905.361148] block drbd0: peer D0DC01583124570A:0000000000000000:0E4124C4A286E820:0000000000000004 bits:0 flags:0
[  905.361151] block drbd0: uuid_compare()=0 by rule 40
[  905.361159] block drbd0: peer( Unknown -> Secondary ) conn( WFReportParams -> Connected ) pdsk( DUnknown -> UpToDate )