[MooseFS-Users] reply: reply: mooseFS_issue

[叶俊[技术中心] <jo...@vi...>]

1.       With more information , MFS GUI info is as below :

2.       We have 3 MFS cluster , Cluster A rebalance number is 0 , somehow Cluster B with replication disconnect trouble , replication number is 53432;

[cid:image001.png@01D101EA.7A269920]


发件人: 叶俊[技术中心]
发送时间: 2015年10月8日 15:17
收件人: 'moo...@li...'
主题: reply: mooseFS_issue


1.    On addtion, the File system is ext4;

2.    The old cluster with 8 old chunk server runs well, didn’t meet any issue before;

John.ye

发件人: 叶俊[技术中心]
发送时间: 2015年10月8日 15:13
收件人: 'moo...@li...'
主题: mooseFS_issue

Dear support team,


This is John from vip.com; system administrator team ;  our mfs system is :
OS: CentOS 6.3
Master: 1
Metalog:1
Chunk:8 （16TB / server）  version: 1.6.27
Expend an other chunk: 8  (16TB / Server)   version: 1.6.27
Total chunk: 8+8=16


1. Why we expand:
since old chunkx8 is over 90% disk usage

2. What issue we meet:
After expand another 8 chunk server , old chunk try to replicate data to new chunk , but it fail due to some reason,
/var/log/message log of master :
Oct  8 14:29:35 GD6-MFS-MASTER-FLASHCACHE-001 mfsmaster[2168]: (10.201.70.175:9422) chunk: 000000000AF7D9DC replication status: Disconnected
Oct  8 14:29:35 GD6-MFS-MASTER-FLASHCACHE-001 mfsmaster[2168]: (10.201.70.171:9422) chunk: 000000000BB7D9DC replication status: Disconnected
Oct  8 14:29:36 GD6-MFS-MASTER-FLASHCACHE-001 mfsmaster[2168]: (10.201.70.180:9422) chunk: 000000000B68703F replication status: Disconnected
Oct  8 14:29:36 GD6-MFS-MASTER-FLASHCACHE-001 mfsmaster[2168]: (10.201.70.173:9422) chunk: 000000000B48703F replication status: Disconnected
Oct  8 14:29:36 GD6-MFS-MASTER-FLASHCACHE-001 mfsmaster[2168]: (10.201.70.175:9422) chunk: 000000000BB8703F replication status: Disconnected
Oct  8 14:29:36 GD6-MFS-MASTER-FLASHCACHE-001 mfsmaster[2168]: (10.201.70.172:9422) chunk: 000000000B88703F replication status: Disconnected

3. the error log beyond come out once we setup another 8 chunk server;  error log detect every day;


Can pls help to give some advice to solve this replication failure issue?

a.       Why replication fail

b.       What we can do



4. master config is as below:


cat /usr/local/mfs/etc/mfs/mfsmaster.cfg
# WORKING_USER = mfs
# WORKING_GROUP = mfs
# SYSLOG_IDENT = mfsmaster
# LOCK_MEMORY = 0
# NICE_LEVEL = -19

# EXPORTS_FILENAME = /usr/local/mfs/etc/mfs/mfsexports.cfg

# TOPOLOGY_FILENAME = /usr/local/mfs/etc/mfs/mfstopology.cfg

# DATA_PATH = /usr/local/mfs/lib/mfs

# BACK_LOGS = 50
# BACK_META_KEEP_PREVIOUS = 1

# REPLICATIONS_DELAY_INIT = 300
# REPLICATIONS_DELAY_DISCONNECT = 3600

# MATOML_LISTEN_HOST = *
# MATOML_LISTEN_PORT = 9419
# MATOML_LOG_PRESERVE_SECONDS = 600

# MATOCS_LISTEN_HOST = *
# MATOCS_LISTEN_PORT = 9420

# MATOCL_LISTEN_HOST = *
# MATOCL_LISTEN_PORT = 9421

# CHUNKS_LOOP_MAX_CPS = 100000
# CHUNKS_LOOP_MIN_TIME = 300

# CHUNKS_SOFT_DEL_LIMIT = 10
# CHUNKS_HARD_DEL_LIMIT = 25
# CHUNKS_WRITE_REP_LIMIT = 2
# CHUNKS_READ_REP_LIMIT = 10
# ACCEPTABLE_DIFFERENCE = 0.1

# SESSION_SUSTAIN_TIME = 86400
# REJECT_OLD_CLIENTS = 0

# deprecated:
# CHUNKS_DEL_LIMIT - use CHUNKS_SOFT_DEL_LIMIT instead
# LOCK_FILE - lock system has been changed, and this option is used only to search for old lockfile



Best regards



John.ye
System administraotr
email： jo...@vi...<mailto:jo...@vi...>
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