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Videos R**ded by Each Camera Connected to the VCN3000 Have Breakpoints

Publication Date:  2019-07-30 Views:  183 Downloads:  0

Issue Description

VCN3000 version: V100R002C00SPC103
Symptom: Videos r**ed by the cameras connected to a VCN3000 among three VCN3000s have breakpoints, as shown in the following figure.
 

Handling Process

1. According to the MU log analysis, data writing takes a long time (such as for more than half a minute). The MU logs are as follows:
Line 848: 2016-07-27 13:57:51.465+08:00|   Info|TID:0x7FDE49FD4700|success to SaveAllDataToDisk,|lens = 06723200000000000101n, data time=130, index time=0, db time=0
Line 850: 2016-07-27 13:57:51.465+08:00|   Info|TID:0x7FDE48B13700|success to SaveAllDataToDisk,|lens = 03195710000000000101n, data time=101, index time=0, db time=0
Line 853: 2016-07-27 13:57:51.467+08:00|   Info|TID:0x7FDE48C7E700|success to SaveAllDataToDisk,|lens = 04489760000000000101n, data time=33, index time=0, db time=0
Line 855: 2016-07-27 13:57:51.467+08:00|   Info|TID:0x7FDE48BB8700|success to SaveAllDataToDisk,|lens = 07954610000000000101n, data time=37, index time=0, db time=0
Line 887: 2016-07-27 13:57:51.486+08:00|   Info|TID:0x7FDE48B76700|success to SaveAllDataToDisk,|lens = 02662880000000000101n, data time=33, index time=0, db time=0
Line 889: 2016-07-27 13:57:51.486+08:00|   Info|TID:0x7FDE49C9B700|success to SaveAllDataToDisk,|lens = 07853410000000000101n, data time=36, index time=0, db time=0
Line 899: 2016-07-27 13:57:51.505+08:00|   Info|TID:0x7FDE48A0B700|success to SaveAllDataToDisk,|lens = 04665570000000000101n, data time=33, index time=0, db time=0
{ Line 904: 2016-07-27 13:57:51.532+08:00|   Info|TID:0x7FDE49185700|success to SaveAllDataToDisk,|lens = 03162010000000000101n, data time=33, index time=0, db time=0
The logs above shows that it takes more than half a minute to write data into disks.
2. Check the SmartData logs. It is found that the disk in slot 0 is a busy disk. Therefore, the disk in slot 0 is removed and replaced with a hot spare disk automatically.
Line 71831: Jun 13 09:50:45 huawei-ivs kernel: [2735365.441177]  @ [time 575e1175:   9d041 pid 236 ps(6702)] SMIO_MpIsBusyCmd: 808 @ --- path 0 cmnd(0xffff88031d24b380) of disk 0:3 is BUSY (25:20) LeftCnt (3) ---
Line 71832: Jun 13 09:50:45 huawei-ivs kernel: [2735365.454216]  @ [time 575e1175:   a033d pid 236 ps(6702)] SMIO_MpIsBusyCmd: 808 @ --- path 0 cmnd(0xffff88030e4a32c0) of disk 0:3 is BUSY (25:20) LeftCnt (3) ---
Line 71833: Jun 13 09:50:45 huawei-ivs kernel: [2735365.463795]  @ [time 575e1175:   a28b1 pid 236 ps(6702)] SMIO_MpIsBusyCmd: 808 @ --- path 0 cmnd(0xffff8802dfaea080) of disk 0:3 is BUSY (25:20) LeftCnt (3) ---
The logs above shows that busy disks exist.
According to the preceding analysis, the hard disk of slot 0 is faulty. As a result, the read speed is slow, and even the disk becomes busy. As a result, the videos re**ded by the cameras under the VCN3000 are intermittently interrupted.
3. The disk in slot 0 is removed and replaced with a hot spare disk. The r**ding is normal and the fault is rectified.

Root Cause

The disk in slot 0 is faulty.

Solution

Remove the disk in slot 0 and replace it with a hot spare disk. After that, apply for a new disk.

END