Nexus 7706 gave this log. So anyone can explain what the issue?
2018 Aug 10 16:31:35 CDN_N7K_02 Aug 10 16:31:35 %KERN-2-SYSTEM_MSG: [61176743.304934] EXT3-fs error (device sdb3): ext3_find_entry: reading directory #2 offset 0 - kernel
2018 Aug 10 16:31:35 CDN_N7K_02 Aug 10 16:31:35 %KERN-3-SYSTEM_MSG: [61176743.311648] Buffer I/O error on device sdb3, logical block 0 - kernel
2018 Aug 10 16:31:35 CDN_N7K_02 Aug 10 16:31:35 %KERN-2-SYSTEM_MSG: [61176743.360689] EXT3-fs error (device sdb4): ext3_find_entry: reading directory #2 offset 0 - kernel
2018 Aug 10 16:31:35 CDN_N7K_02 %AAA-3-AAA_ERR_MSG: File Writing Failed for /mnt/pss/aaa_vdc_1.seqnum
2018 Aug 10 16:31:36 CDN_N7K_02 Aug 10 16:31:35 %KERN-2-SYSTEM_MSG: [61176743.697161] EXT3-fs error (device sdb3): ext3_find_entry: reading directory #2 offset 0 - kernel
2018 Aug 10 16:31:36 CDN_N7K_02 Aug 10 16:31:35 %KERN-3-SYSTEM_MSG: [61176743.704605] Buffer I/O error on device sdb3, logical block 0 - kernel
2018 Aug 10 16:31:42 CDN_N7K_02 Aug 10 16:31:42 %KERN-2-SYSTEM_MSG: [61176749.946727] EXT3-fs error (device sdb4): ext3_find_entry: reading directory #2 offset 0 - kernel
2018 Aug 10 16:31:54 CDN_N7K_02 Aug 10 16:31:53 %KERN-2-SYSTEM_MSG: [61176761.770215] EXT3-fs error (device sdb3): ext3_find_entry: reading directory #2 offset 0 - kernel
2018 Aug 10 16:31:54 CDN_N7K_02 Aug 10 16:31:53 %KERN-3-SYSTEM_MSG: [61176761.770353] Buffer I/O error on device sdb3, logical block 0 - kernel
2018 Aug 10 16:31:54 CDN_N7K_02 Aug 10 16:31:53 %KERN-2-SYSTEM_MSG: [61176761.770509] EXT3-fs error (device sdb3): ext3_find_entry: reading directory #2 offset 0 - kernel
2018 Aug 10 16:31:54 CDN_N7K_02 Aug 10 16:31:53 %KERN-3-SYSTEM_MSG: [61176761.770638] Buffer I/O error on device sdb3, logical block 0 - kernel
2018 Aug 10 16:46:50 CDN_N7K_02 Aug 10 16:46:50 %KERN-2-SYSTEM_MSG: [61177658.584177] EXT3-fs error (device sdb3): ext3_find_entry: reading directory #2 offset 0 - kernel
2018 Aug 10 16:46:50 CDN_N7K_02 Aug 10 16:46:50 %KERN-3-SYSTEM_MSG: [61177658.593961] Buffer I/O error on device sdb3, logical block 0 - kernel
2018 Aug 10 16:46:50 CDN_N7K_02 Aug 10 16:46:50 %KERN-2-SYSTEM_MSG: [61177658.606843] EXT3-fs error (device sdb3): ext3_find_entry: reading directory #2 offset 0 - kernel
2018 Aug 10 16:46:50 CDN_N7K_02 Aug 10 16:46:50 %KERN-3-SYSTEM_MSG: [61177658.606970] Buffer I/O error on device sdb3, logical block 0 - kernel
2018 Aug 10 16:50:26 CDN_N7K_02 Aug 10 16:50:25 %KERN-2-SYSTEM_MSG: [61177873.446109] EXT3-fs error (device sdb3): ext3_readdir: directory #2 contains a hole at offset 0 - kernel
2018 Aug 10 16:50:26 CDN_N7K_02 Aug 10 16:50:25 %KERN-3-SYSTEM_MSG: [61177873.446245] Buffer I/O error on device sdb3, logical block 0 - kernel
