Ricardo M. Correia a0b5ae8aca Fix off-by-1 truncation of hw_serial when converting from integer to string, when writing to /proc/sys/kernel/spl/spl_hostid.
Fixes hostid mismatch which leads to assertion failure when the hostid/hw_serial is a 10-character decimal number:

$ zpool status
  pool: lustre
 state: ONLINE
lt-zpool: zpool_main.c:3176: status_callback: Assertion `reason == ZPOOL_STATUS_OK' failed.
zsh: 5262 abort      zpool status
2009-03-12 15:47:50 -07:00
..
2009-03-11 13:00:26 -07:00
2009-03-04 10:04:15 -08:00
2009-02-18 09:48:07 -08:00