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ls 挂在 NAS 挂载点上

tag-icon • tag-icon linux unix network-attached-storage rhel6
ls 挂在 NAS 挂载点上

我们经常会遇到这个问题。

我们的 NAS 安装点运行正常，但突然就挂起了。

当我们去做 ls 时，终端就挂起了。

strace ls /srv/git

挂在这里

 unmap(0x7f6a5c03f000, 4096)            = 0
 open("/usr/lib/locale/locale-archive", O_RDONLY) = 3
 fstat(3, {st_mode=S_IFREG|0644, st_size=99158576, ...}) = 0
 mmap(NULL, 99158576, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f6a5619e000
 close(3)                                = 0
 ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo      ...}) = 0
 ioctl(1, TIOCGWINSZ, {ws_row=28, ws_col=117, ws_xpixel=0, ws_ypixel=0}) = 0
 stat("/srv/git",

^C <unfinished ...>

ps -ef | grep ls

给我们很多这样的过程

 user1    9099  9050  0 05:39 pts/7    00:00:00 ls --color=auto
 user1    9165     1  0 05:42 pts/8    00:00:00 ls /srv/git
 user1    9168     1  0 05:42 pts/8    00:00:00 ls /srv/git
 user1    9235  9111  0 05:47 pts/8    00:00:00 grep ls
 gt       40490 40483  0 Apr15 ?        00:00:00 ls -1 /srv/git/mirrors

消息

   Call Trace:
      [<ffffffffa026f36e>] ? rpc_make_runnable+0x7e/0x80 [sunrpc]
      [<ffffffffa026fc10>] ? rpc_execute+0x50/0xa0 [sunrpc]
      [<ffffffff810aaa21>] ? ktime_get_ts+0xb1/0xf0
      [<ffffffff811242d0>] ? sync_page+0x0/0x50
      [<ffffffff8152a1b3>] io_schedule+0x73/0xc0
      [<ffffffff8112430d>] sync_page+0x3d/0x50
      [<ffffffff8152ac7f>] __wait_on_bit+0x5f/0x90
      [<ffffffff81124543>] wait_on_page_bit+0x73/0x80
      [<ffffffff8109eb80>] ? wake_bit_function+0x0/0x50
      [<ffffffff8113a525>] ? pagevec_lookup_tag+0x25/0x40
      [<ffffffff8112496b>] wait_on_page_writeback_range+0xfb/0x190
      [<ffffffff81139651>] ? do_writepages+0x21/0x40
      [<ffffffff81124abb>] ? __filemap_fdatawrite_range+0x5b/0x60
      [<ffffffff81124b38>] filemap_write_and_wait_range+0x78/0x90
      [<ffffffff811c07ce>] vfs_fsync_range+0x7e/0x100
      [<ffffffff811c08bd>] vfs_fsync+0x1d/0x20
      [<ffffffffa030c930>] nfs_file_flush+0x70/0xa0 [nfs]
      [<ffffffff8118ac4c>] filp_close+0x3c/0x90
      [<ffffffff8118ad45>] sys_close+0xa5/0x100
      [<ffffffff8100b072>] system_call_fastpath+0x16/0x1b

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