tsm备份报错：ANR1401W 。。。 mount failed.

ANR1401W Mount request denied for volume DUM029L6 - mount failed.

ANR0408I Session 113 started for server IDCTSM (Windows) (Tcp/Ip) for library sharing.

ANR0408I Session 114 started for server IDCTSM (Windows) (Tcp/Ip) for library sharing.

ANR0409I Session 114 ended for server IDCTSM (Windows).

ANR0408I Session 115 started for server IDCTSM (Windows) (Tcp/Ip) for library sharing.

ANR0409I Session 115 ended for server IDCTSM (Windows).

ANR0409I Session 113 ended for server IDCTSM (Windows).

ANR1401W Mount request denied for volume DUM029L6 - mount failed.

ANR0408I Session 116 started for server IDCTSM (Windows) (Tcp/Ip) for library sharing.

ANR0408I Session 117 started for server IDCTSM (Windows) (Tcp/Ip) for library sharing.

ANR0409I Session 117 ended for server IDCTSM (Windows).

ANR0406I Session 119 started for node NODEBWPB (TDP Oracle AIX) (Tcp/Ip bwpb(21776)).

ANR0408I Session 120 started for server IDCTSM (Windows) (Tcp/Ip) for storage agent.

ANR0408I Session 121 started for server IDCTSM (Windows) (Tcp/Ip) for library sharing.

ANR0409I Session 121 ended for server IDCTSM (Windows).

ANR0408I Session 122 started for server IDCTSM (Windows) (Tcp/Ip) for library sharing.

ANR0409I Session 116 ended for server IDCTSM (Windows).

ANR1401W Mount request denied for volume DUM073L6 - mount failed.

ANR0525W Transaction failed for session 108 for node NODEBWPB (TDP Oracle AIX) - storage media inaccessible.

ANR0409I Session 122 ended for server IDCTSM (Windows).

ANR8337I LTO volume DUM083L6 mounted in drive DRIVE03 (/dev/rmt7).

ANR0511I Session 119 opened output volume DUM083L6.

ANR0408I Session 123 started for server IDCTSM (Windows) (Tcp/Ip) for library sharing.

昨天调整了一下tsm，并且重启了一下带库和tsm服务器，起来之后挨着测试所有系统，发现老是有个别系统，备份mount failed，以为是path问题，就来回删除path，审计带库，都不行

我查看了tsm下管理的的磁带q vol，可以确定与空间大小无关。有些是60%报错，有些是90%成功，空余磁带也有很多。

真诡异，难道是磁带还是驱动器坏了？搞不清楚了。