[sheepdog-users] Time to get a node info or md info

[Valerio Pachera]

2013/8/9 Valerio Pachera <sirio81 at gmail.com>:
> May it be possible/clever to retrieve the info from df ?

I guess 'df' uses some c function that collie may use too.
Sure I'm not aware of many (all) back ground stuff, but just to give
you an idea of what I would like to see (in term of speed).

 time parallel-ssh -i -h pssh.conf 'df -h | grep /mnt/sheep'
[1] 18:28:47 [SUCCESS] sheepdog001
/dev/mapper/vg00-sheepdsk01                             167G  137G
30G  83% /mnt/sheep/dsk01
/dev/sdb1                                               466G  329G
137G  71% /mnt/sheep/dsk02
/dev/sdc1                                               1,9T  1,2T
709G  62% /mnt/sheep/dsk03
[2] 18:28:47 [SUCCESS] sheepdog004
/dev/mapper/vg01-sheepdsk01   50G   50M     50G   1% /mnt/sheep/meta
/dev/sdc1                    466G  216G    251G  47% /mnt/sheep/dsk03
/dev/sdd1                    1,9T  1,4T    449G  76% /mnt/sheep/dsk04
[3] 18:28:47 [SUCCESS] sheepdog003
/dev/sda6       170G  154G     16G  91% /mnt/sheep/dsk01
/dev/sdb1       2,8T  1,9T    934G  67% /mnt/sheep/dsk02
[4] 18:28:47 [SUCCESS] sheepdog002
/dev/mapper/vg00-sheepdsk01                             167G   85G
82G  51% /mnt/sheep/dsk01
/dev/sdb1                                               466G  300G
167G  65% /mnt/sheep/dsk02
/dev/sdc1                                               1,9T  1,2T
668G  65% /mnt/sheep/dsk03

This applicable only if sheep runs on dedicated devices.


real    0m0.287s
user    0m0.056s
sys     0m0.036s