On Jan 7, 2015, at 3:33 PM, "Gupta, Amit" <[email protected]> wrote:
> 1) Run "debugfs -c $MGT_DEVICE" on the MGS server, and then cd into the
> CONFIGS/ directory to check if the "client1-client" config file exists.
>
> [root@mgs]# debugfs -c -R 'ls -l CONFIGS' /dev/mapper/mpathcp1
> debugfs 1.42.12.wc1 (15-Sep-2014)
> /dev/mapper/mpathcp1: catastrophic mode - not reading inode or group bitmaps
> 32769 40755 (2) 0 0 4096 6-Jan-2015 13:09 .
> 2 40755 (2) 0 0 4096 6-Jan-2015 13:10 ..
> 12 100644 (1) 0 0 12288 6-Jan-2015 13:10 mountdata
> 81 100644 (1) 0 0 0 6-Jan-2015 13:10 params-client
> 82 100644 (1) 0 0 0 6-Jan-2015 13:10 params
> 83 100644 (1) 0 0 11200 6-Jan-2015 13:10 temp-client
> 84 100644 (1) 0 0 9792 6-Jan-2015 13:10 temp-MDT0000
> 104 100644 (1) 0 0 10600 6-Jan-2015 13:12 client2-client
> 105 100644 (1) 0 0 8880 6-Jan-2015 13:12 client2-OST0000
> 107 100644 (1) 0 0 10600 6-Jan-2015 23:38 client1-client
> 108 100644 (1) 0 0 8880 6-Jan-2015 23:38 client1-OST0000
>
It looks like there is (or was) a file system called "temp" that was created
with a MDT but no OST. The other file systems ("client1" and "client2") have
an OST, but no MDT. If that is accurate, it explains why you can't mount
"client1".
--
Rick Mohr
Senior HPC System Administrator
National Institute for Computational Sciences
http://www.nics.tennessee.edu
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