linux errno 对应参考及代码

errno1:operation not permitted

errno2:no such file or directory

errno3:no such process

errno4:interrupted system call

errno5:input/output error

errno6:no such device or address

errno7:argument list too long

errno8:exec format error

errno9:bad file descriptor

errno 10:no child processes

errno 11:resource temporarily unavailable

errno 12:cannot allocate memory

errno 13:permission denied

errno 14:bad address

errno 15:block device required

errno 16:device or resource busy

errno 17:file exists

errno 18:invalid cross-device link

errno 19:no such device

errno 20:not a directory

errno 21:is a directory

errno 22:invalid argument

errno 23:too many open files in system

errno 24:too many open files

errno 25:inappropriate ioctl for device

errno 26:text file busy

errno 27:file too large

errno 28:no space left on device

errno 29:illegal seek

errno 30:read-only file system

errno 31:too many links

errno 32:broken pipe

errno 33:numerical argument out of domain

errno 34:numerical result out of range

errno 35:resource deadlock avoided

errno 36:file name too long

errno 37:no locks available

errno 38:function not implemented

errno 39:directory not empty

errno 40:too many levels of symbolic links

errno 41:errno 41

errno 42:no message of desired type

errno 43:identifier removed

errno 44:channel number out of range

errno 45:level 2 not synchronized

errno 46:level 3 halted

errno 47:level 3 reset

errno 48:link number out of range

errno 49:protocol driver not attached

errno 50:no CSI structure available

errno 51:level 2 halted

errno 52:invalid exchange

errno 53:invalid request descriptor

errno 54:exchange full

errno 55:no anode

errno 56:invalid request code

errno 57:invalid slot

errno 58:errno 58

errno 59:bad font file format

errno 60:device not a stream

errno 61:no data available

errno 62:timer expired

errno 63:out of streams resources

errno 64:machine is not on the network

errno 65:package not installed

errno 66:object is remote

errno 67:link has been severed

errno 68:advertise error

errno 69:srmount error

errno 70:communication error on send

errno 71:protocol error

errno 72:multihop attempted

errno 73:RFS specific error

errno 74:bad message

errno 75:value too large for defined data type

errno 76:name not unique on network

errno 77:file descriptor in bad state

errno 78:remote address changed

errno 79:can not access a needed shared library

errno 80:accessing a corrupted shared library

errno 81:.lib section in a.out corrupted

errno 82:attempting to link in too many shared libraries

errno 83:cannot exec a shared library directly

errno 84:invalid or incomplete multibyte or wide character

errno 85:interrupted system call should be restarted

errno 86:streams pipe error

errno 87:too many users

errno 88:socket operation on non-socket

errno 89:destination address required

errno 90:message too long

errno 91:protocol wrong type for socket

errno 92:protocol not available

errno 93:protocol not supported

errno 94:socket type not supported

errno 95:operation not supported

errno 96:protocol family not supported

errno 97:address family not supported by protocol

errno 98:address already in use

errno 99:cannot assign requested address

errno 100:network is down

errno 101:network is unreachable

errno 102:network dropped connection on reset

errno 103:software caused connection abort

errno 104:connection reset by peer

errno 105:no buffer space available

errno 106:transport endpoint is already connected

errno 107:transport endpoint is not connected

errno 108:cannot send after transport endpoint shutdown

errno 109:too many references: cannot splice

errno 110:connection timed out

errno 111:connection refused

errno 112:host is down

errno 113:no route to host

errno 114:operation already in progress

errno 115:operation now in progress

errno 116:stale NFS file handle

errno 117:structure needs cleaning

errno 118:not a XENIX named type file

errno 119:no XENIX semaphores available

errno 120:is a named type file

errno 121:remote I/O error

errno 122:disk quota exceeded

errno 123:no medium found

errno 124:wrong medium type

errno 125:operation canceled

errno 126:required key not available

errno 127:key has expired

errno 128:key has been revoked

errno 129:key was rejected by service

errno 130:owner died

errno 131:state not recoverable

errno 132:operation not possible due to RF-kill

1. FastDFS适用的场景以及不适用的场景？

FastDFS是为互联网应用量身定做的一套分布式文件存储系统，非常适合用来存储用户图片、视频、文档等文件。对于互联网应用，和其他分布式文件系统相比，优势非常明显。

FastDFS没有对文件做分块存储，因此不太适合分布式计算场景。

2. 当用fdfs_monitor /etc/fdfs/storage.conf 这个命令进行查看tracker与storage端是否建立连接时，两端始终显示都是offline。

解决：先查看tracker和storage的日志，确认服务是否有问题；如果日志显示正常，则有可能是在 *** 作过程中，删除了tracker或storage某一方的缓存文件，导致缓存不匹配。此时，先关闭tracker和storage服务，

删除tracker.conf和storage.conf中指定的base_path目录下的data文件，再重启服务即可。

注意：如果删除了FastDHT 的base_path目录下的文件，切片集信息将全部丢失。

3. 在上传文件时，出现  ERROR - file: tracker_proto.c, line: 48, server: 101.200.215.232:23000, response status 28 != 0

解决：状态返回28，说明磁盘空间不足，注意FastDFS中有预留空间的概念，在tracker.conf中设置，配置项为：reserved_storage_space，缺省值为4GB，即预留4GB的空间。

请酌情设置reserved_storage_space这个参数，比如可以设置为磁盘总空间的20%左右可以修改/etc/fdfs/tracker.conf文件

4. 执行fdfs_test或fdfs_test1上传文件时，服务器返回错误号2

解决：状态返回2表示没有ACTIVE状态的storage server。可以执行fdfs_monitor查看服务器状态。

5. ERROR - file: /home/nginx/install/fastdfs-nginx-module/src/common.c, line: 561, logic file: M00/00/00/wKgBNU7wRbrcAYGuAALOPrGJ7YQ668.jpg not exists

解决： apache和nginx扩展模块版本v1.06及以上版本，需要在配置文件/etc/fdfs/fastdfs_mod.conf中设置storage server的存储路径信息。

一个示例如下所示：

store_path_count=1

store_path0=/home/yuqing/fastdfs

store_path_count和store_path   #均需要正确设置，必须和storage.conf中的相应配置完全一致

6. nginx和apache扩展模块与FastDFS server版本对应关系

解决：扩展模块1.05： 针对FastDFs server v2.x，要求server版本大于等于v2.09

      扩展模块1.07及以上版本： 针对FastDFs server v3.x

7. nginx扩展模块，不能正常显示图片的问题

解决：在配置文件/etc/fdfs/mod_fastdfs.conf中，缺省的设置是这样的：http.need_find_content_type=false这个参数在nginx中需要设置为true，apache中应该设置为false。

8. 分布式切图时，控制台为什么会提示“No buffer space available (maximum connections reached?):connect”？38error.png

解决：分布式切图过程中，向 FastDFS 存储上传切片时，占用的端口数增多，可能会达到本地 *** 作系统的端口数的上限，所以出现上述问题。可通过如下方式规避：

Windows 系统

运行 “regedit.exe”，打开注册表，找到 “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Tcpip\Parameters”位置，添加“TcpTimedWaitDelay”，类型为DWORD，值为30；

添加“MaxUserPort”，类型为DWORD，值为20000（调大系统可用端口数）。

Linux 系统

运行 “vi /etc/sysctl.conf”，编辑文件，加入以下内容：

net.ipv4.tcp_syncookies  = 1

net.ipv4.tcp_tw_reuse = 1

net.ipv4.tcp_tw_recycle =  1

net.ipv4.tcp_fin_timeout = 30

然后执行“/sbin/sysctl -p”让参数生效即可。

9. 在启动tracker的时候出现此类错误：ERROR - file: ../common/fdfs_http_shared.c, line: 128, param "http.mime_types_filename" not exist or is empty

解决：修改tracker.conf里面，把##include http.conf 改为#include http.conf ，再重启

10. 报错 ERROR - file: tracker_http_check.c, line: 132, http check alive, connect to http server 192.168.1.53:8888 fail, errno: 111, error info: Connection refused

解决：端口不对。要配置storage和nginx端口一致。

11. 报错400 badrequest [2011-12-12 15:24:21] ERROR - file: /tmp/fastdfs-nginx-module/src/common.c, line: 561, logic file: M00/00/00/wKgBNU7lqyjzJZ4mAA4CRXl5SCQ670.jpg not exists

2011/12/12 15:24:21 [error] 14147#0: *1 open() "/home/nginx/nginx/html/favicon.ico" failed (2: No such file or directory), client: 192.168.1.123, server: localhost, request: "GET /favicon.ico HTTP/1.1", host: "192.168.1.53:8090"

解决：修改/fastdfs/conf/mod_fastdfs.conf      里面url_have_group_name = true

12. 在tracker的日志里报出此类错误  ERROR - file: tracker_mem.c, line: 1406, the format of the file "/home/bstar/dfs_data/data/storage_sync_timestamp.dat" is invalid, group: group3, row count:1 >server count:0

解决：修改data里面的 storage_sync_timestamp.dat，把group3的信息删掉，然后重启tracker

13. 如何删除无效的storage server？

解决：可以使用fdfs_monitor来删除。命令行如下：

/usr/local/bin/fdfs_monitor delete

例如：/usr/local/bin/fdfs_monitor /etc/fdfs/client.conf delete group1 192.168.0.100

注意：如果被删除的storage server的状态是ACTIVE，也就是该storage server还在线上服务的情况下，是无法删除掉的

你的servaddr里的IP地址或PORT端口号设置错了吧。

服务端和客户端的简单里子请参考：

http://blog.csdn.net/flynetcn/article/details/5829258

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