从昨天开始 linux 通过光纤直接连接磁盘阵列，会出现磁盘阵列掉了的情况，然后机器会重启，本来重启后，rose ha 会自动挂载磁盘阵列，现在由于 rose ha 也出了点问题，导致不切换备用服务器，主服务器也不挂载磁盘阵列的情况。导致服务起不来。

目前报错如下 EXT4-fs error (device sdb): ext4_read_block_bitmap: Cannot read block bitmap -

Sep 13 18:02:48 localhost kernel: end_request: I/O error, dev sdb, sector 5301024

Sep 13 18:02:48 localhost kernel: JBD2: Detected IO errors while flushing file data on sdb-8

Sep 13 18:02:48 localhost kernel: Aborting journal on device sdb-8.

Sep 13 18:02:48 localhost kernel: JBD2: I/O error detected when updating journal superblock for sdb-8.

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_journal_start_sb: Detected aborted journal

Sep 13 18:02:48 localhost kernel: EXT4-fs (sdb): Remounting filesystem read-only

Sep 13 18:02:48 localhost kernel: JBD2: Detected IO errors while flushing file data on sdb-8

Sep 13 18:02:48 localhost kernel: journal commit I/O error

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_read_block_bitmap: Cannot read block bitmap - block_group = 3626, block_bitmap = 118489098

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_discard_preallocations: Error reading block bitmap for 3626

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_read_block_bitmap: Cannot read block bitmap - block_group = 169, block_bitmap = 5242889

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_discard_preallocations: Error reading block bitmap for 169

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_read_block_bitmap: Cannot read block bitmap - block_group = 3626, block_bitmap = 118489098

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_discard_preallocations: Error reading block bitmap for 3626

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_read_block_bitmap: Cannot read block bitmap - block_group = 3627, block_bitmap = 118489099

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_discard_preallocations: Error reading block bitmap for 3627

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_read_block_bitmap: Cannot read block bitmap - block_group = 169, block_bitmap = 5242889

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_discard_preallocations: Error reading block bitmap for 169

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_read_block_bitmap: Cannot read block bitmap - block_group = 3630, block_bitmap = 118489102

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_discard_preallocations: Error reading block bitmap for 3630

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_read_block_bitmap: Cannot read block bitmap - block_group = 3630, block_bitmap = 118489102

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_discard_preallocations: Error reading block bitmap for 3630

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_read_block_bitmap: Cannot read block bitmap - block_group = 3630, block_bitmap = 118489102

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_discard_preallocations: Error reading block bitmap for 3630

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_read_block_bitmap: Cannot read block bitmap - block_group = 2593, block_bitmap = 84934657

Sep 13 18:02:48 localhost kernel: EXT4-fs error (device sdb): ext4_discard_preallocations: Error reading block bitmap for 2593

我去磁盘阵列查看了下，当时磁盘阵列也有报错 大约报错是 光纤连接中断一分钟这样的错误

请教下大神，这是什么问题？光纤线 连接的问题吗？还是其他问题？