As listagens a seguir são de uma caixa Linux RHEL. Estou um pouco confuso com as seguintes inconsistências.
Aqui temos aliases definidos para cada LUN no arquivo de ligações do multipath:
mpath0 36006016071602e0026025fa3eff2e111
mpath1 36006016071602e008cec8699eff2e111
mpath2 36006016071602e00485dffadeff2e111
mpath3 360060160b6502e00e63f011ab359e211
Mas aqui temos WWNs e aliases para nomes de arquivos de dispositivos. Por que o mix?
ll /dev/mpath
lrwxrwxrwx 1 root root 8 Sep 25 17:39 36006016071602e0026025fa3eff2e111 -> ../dm-15
lrwxrwxrwx 1 root root 8 Sep 25 17:39 36006016071602e0026025fa3eff2e111p1 -> ../dm-20
lrwxrwxrwx 1 root root 8 Sep 25 17:39 36006016071602e00485dffadeff2e111 -> ../dm-17
lrwxrwxrwx 1 root root 8 Sep 25 17:39 36006016071602e00485dffadeff2e111p1 -> ../dm-18
lrwxrwxrwx 1 root root 8 Sep 25 17:43 mpath1 -> ../dm-16
lrwxrwxrwx 1 root root 8 Sep 25 17:43 mpath1p1 -> ../dm-19
lrwxrwxrwx 1 root root 8 Jan 8 14:50 mpath3 -> ../dm-27
/etc/multipath.conf não tem nada definido que possa causar isso.
serviço multipathd restart (e start / stop) foram executados.
multipath -ll
mpath2 (36006016071602e00485dffadeff2e111) dm-17 DGC,VRAID
[size=209G][features=1 queue_if_no_path][hwhandler=1 emc][rw]
\_ round-robin 0 [prio=1][active]
\_ 1:0:0:2 sdd 8:48 [active][ready]
\_ round-robin 0 [prio=0][enabled]
\_ 2:0:0:2 sdg 8:96 [active][ready]
mpath1 (36006016071602e008cec8699eff2e111) dm-16 DGC,VRAID
[size=55G][features=1 queue_if_no_path][hwhandler=1 emc][rw]
\_ round-robin 0 [prio=1][active]
\_ 1:0:0:1 sdc 8:32 [active][ready]
\_ round-robin 0 [prio=0][enabled]
\_ 2:0:0:1 sdf 8:80 [active][ready]
mpath0 (36006016071602e0026025fa3eff2e111) dm-15 DGC,VRAID
[size=9.0G][features=1 queue_if_no_path][hwhandler=1 emc][rw]
\_ round-robin 0 [prio=1][active]
\_ 2:0:0:0 sde 8:64 [active][ready]
\_ round-robin 0 [prio=0][enabled]
\_ 1:0:0:0 sdb 8:16 [active][ready]
mpath3 (360060160b6502e00e63f011ab359e211) dm-27 DGC,VRAID
[size=210G][features=1 queue_if_no_path][hwhandler=1 emc][rw]
\_ round-robin 0 [prio=1][active]
\_ 2:0:0:3 sdi 8:128 [active][ready]
\_ round-robin 0 [prio=0][enabled]
\_ 1:0:0:3 sdh 8:112 [active][ready]
Outros sistemas são consistentes:
ll /dev/mpath
lrwxrwxrwx 1 root root 8 Dec 26 12:18 3600601601c902e000ef2100e1e3ee211 -> ../dm-15
lrwxrwxrwx 1 root root 8 Dec 26 12:18 36006016033902e007a63bd7820fce111 -> ../dm-14
lrwxrwxrwx 1 root root 8 Dec 26 12:18 36006016033902e00d2bee6bc1ffce111 -> ../dm-13
ll /dev/mpath
lrwxrwxrwx 1 root root 8 Dec 26 18:47 3600601601c902e000ef2100e1e3ee211 -> ../dm-15
lrwxrwxrwx 1 root root 8 Dec 26 18:47 3600601601c902e00160c21202a07e211 -> ../dm-14
lrwxrwxrwx 1 root root 8 Dec 26 18:47 3600601601c902e003eedbf312a07e211 -> ../dm-13
Obrigado antecipadamente,
Xavier
Default location of /var/lib/multipath/bindings. /var is a mountpoint and Red Hat does recommend relocating it to /-- but I doubt this is an issue. – XO01 Jan 11 at 9:50
Por que você acha isso? Veja, por exemplo, link Você pode definir o arquivo de ligações como, por exemplo, /etc/multipath.bindings (supondo que / etc não é um sistema de arquivos separado). Certifique-se de ter o link instalado.
Não conhecendo o histórico administrativo nesta máquina, o problema resultou do fato de as LUNs não serem representadas do sistema de maneira impura. A reinicialização do sistema foi recomendada e resolveu o problema.
lrwxrwxrwx 1 root root 8 Jan 15 15:44 36006016071602e0026025fa3eff2e111 -> ../dm-15
lrwxrwxrwx 1 root root 8 Jan 15 15:44 36006016071602e0026025fa3eff2e111p1 -> ../dm-21
lrwxrwxrwx 1 root root 8 Jan 15 15:44 36006016071602e00485dffadeff2e111 -> ../dm-17
lrwxrwxrwx 1 root root 8 Jan 15 15:44 36006016071602e00485dffadeff2e111p1 -> ../dm-19
lrwxrwxrwx 1 root root 8 Jan 15 15:44 36006016071602e008cec8699eff2e111 -> ../dm-16
lrwxrwxrwx 1 root root 8 Jan 15 15:44 36006016071602e008cec8699eff2e111p1 -> ../dm-20
lrwxrwxrwx 1 root root 8 Jan 15 15:44 36006016071602e00966edb05ab5de211 -> ../dm-18
Tanques para ajudar a todos