[root@lm0117 ~]# pdsh -S -w lm0115,lm0116 /usr/sbin/lctl set_param osd-ldiskfs.lustre-OST0000.nonrotational=0 osd-ldiskfs.lustre-OST0001.nonrotational=0 osd-ldiskfs.lustre-OST0002.nonrotational=0 osd-ldiskfs.lustre-OST0003.nonrotational=0
lm0116: osd-ldiskfs.lustre-OST0002.nonrotational=0
lm0116: osd-ldiskfs.lustre-OST0003.nonrotational=0
lm0116: error: set_param: param_path 'osd-ldiskfs/lustre-OST0000/nonrotational': No such file or directory
lm0116: error: set_param: param_path 'osd-ldiskfs/lustre-OST0001/nonrotational': No such file or directory
pdsh@lm0117: lm0116: ssh exited with exit code 2
lm0115: osd-ldiskfs.lustre-OST0000.nonrotational=0
lm0115: osd-ldiskfs.lustre-OST0001.nonrotational=0
lm0115: error: set_param: param_path 'osd-ldiskfs/lustre-OST0002/nonrotational': No such file or directory
lm0115: error: set_param: param_path 'osd-ldiskfs/lustre-OST0003/nonrotational': No such file or directory
pdsh@lm0117: lm0115: ssh exited with exit code 2
[root@lm0117 ~]# echo $?
2
[root@lm0117 ~]# pdsh -S -w lm0115,lm0116 mount | grep lustre
lm0116: /dev/mapper/ost3_flakey on /mnt/lustre-ost3 type lustre (ro,svname=lustre-OST0002,mgsnode=192.168.1.11@tcp:192.168.1.12@tcp,osd=osd-ldiskfs,errors=remount-ro,user_xattr)
lm0116: /dev/mapper/ost4_flakey on /mnt/lustre-ost4 type lustre (ro,svname=lustre-OST0003,mgsnode=192.168.1.11@tcp:192.168.1.12@tcp,osd=osd-ldiskfs,errors=remount-ro,user_xattr)
lm0115: /dev/mapper/ost1_flakey on /mnt/lustre-ost1 type lustre (ro,svname=lustre-OST0000,mgsnode=192.168.1.11@tcp:192.168.1.12@tcp,osd=osd-ldiskfs,errors=remount-ro,user_xattr)
lm0115: /dev/mapper/ost2_flakey on /mnt/lustre-ost2 type lustre (ro,svname=lustre-OST0001,mgsnode=192.168.1.11@tcp:192.168.1.12@tcp,osd=osd-ldiskfs,errors=remount-ro,user_xattr)
[root@lm0117 ~]#