How to rename QFS fsname?

1: umount /new

2: vi /etc/vfstab     change new to new4
3: vi mcf      change new to new4 in all places.

cat /etc/opt/SUNWsamfs/mcf

new4                                            500    ms      new4   on        shared
/dev/dsk/c6t600A0B80004715700000074D47FD082Ed0s0 501    md      new4   on
/dev/dsk/c6t600A0B8000471570000007D247FD0A22d0s0 502    md      new4   on
/dev/dsk/c6t600A0B80004715700000086F49F1D551d0s0 504    md      new4   on


4: samd config
5: samfsck -F -R new4          (this will change the file system name to new4)

Example:
bash-3.00# samfsck -F -R new4
name:     bcombackups       version:     2A    shared
First pass
ALERT:  ino 1743721017.967461289, Object flag set, should be clear, meta_flag 1, size 8581431105406506118
ALERT:  ino -796177020.1556009446, Object flag set, should be clear, meta_flag 0, size 3201155233938255577
ALERT:  ino 22367104.671481968, Object flag set, should be clear, meta_flag 0
ALERT:  ino 700653835.-1820544200, Object flag set, should be clear, meta_fla
ALERT:  ino -2107630336.-937590376, Object flag set, should be clear, meta_fl
ALERT:  ino 738287680.101681192, Object flag set, should be clear, meta_flag
ALERT:  ino 503702500.2047090706, Object flag set, should be clear, meta_flag
ALERT:  ino -445008776.-1635288612, Object flag set, should be clear, meta_fl
ALERT:
Second pass
Third pass
ALERT:  Invalid block:        ino 1853 marked damaged
NOTICE: ino 2214.1,     Repaired link count from 688 to 674
ALERT:  Invalid block:        ino 4218 marked damaged
ALERT:  Invalid block:        ino 5893 marked damaged
ALERT:  Invalid block:        ino 8836 marked damaged
ALERT:  Invalid block:        ino 12528 marked damaged
ALERT:  Invalid block:        ino 16594 marked damaged
ALERT:  Invalid block:        ino 18916 marked damaged

Inodes processed: 8066560

total data kilobytes       = 5858959296
total data kilobytes free  = 1617932544
NOTICE: Reclaimed 332916064256 bytes

Another example:

root@dam-app2 # samfsck -F -R new4

name:     opsbackup       version:     2A    shared

First pass

Second pass

Third pass

Inodes processed: 2048

total data kilobytes       = 3382270208

total data kilobytes free  = 3382259904

6: mount new4

new4                  4.7T    34G   4.7T     1%    /nearline3

Netgear N600 and DOCSIS 3.0

I've been in IT Infrastructure and Operations world for more 15 years now, helping companies and folks to resolve all sorts of performance issues. Here is my horrible experience with internet connection @ home :)

I have been using ATT for almost a decade and finally decided to go to Comcast.
I upgraded to a DOCSIS 3.0 Motorola modem SB6120 router and also bought a Netgear N600 wireless dual band router for Comcast internet to avoid any monthly charges at all.

Configured and customized router to whatever I wanted, internet all good. By the way I have CAT 6 structured wiring at my home covers almost all the rooms.

The problem I was having was that when connecting to the internet through the wifi,
there was a lag and websites would load way slower.

Symptoms:
Frankly I didn't notice any lags, however my wife started complaining that her vpn drops connection after we switched to Comcast. And its horribly slow compared to AT&T. We were ATT Pro which was 3mbps and Comcast promised at least 10 mbps. Speedtest confirm its double the speed, it never resulted in less than 22mbps. Now, mathematically there is no way internet will be slow. So, I ignore the problem. The complain continues so finally I decided to spend some time with issue.

I still cannot see the difference visually with google.com or yahoo.com

But, yes it can be better there is some lag of 3-5 seconds while pulling the site which may be annoying to some.
The problem became very obvious when I started a download, it was 70KB/s, that means my internet speed is only 560kbps


Troubleshooting steps:
#Packet loss:
The first thing i noticed was the packet loss. While pinging the router after every 25 packets of 1ms latency there are 4 packets which is 100ms. Called Netgear, spend couple of hrs. with tech support, they tried lots of combination with no security, changing to different channels, (I believe 6 and 11 are reliable :-)), I had already downloaded inSSIDer to see if there is any interference with channels neighbors are using, recycle the modem, re flash the modem etc. finally changed default fragmentation length from 2346 to 2345 and there was some improvement in packet loss. But ultimately gave up.

#Wireless speed test
Tried a speedtest using wireless, it says 22Mbps however download sucks (50-100 KB/s)

#Wired speedtest
Tried a speedtest directly connecting to router, it says 22Mbps however download still sucks (50-100 KB/s)

#Connected directly to modem
Now connected directly to modem, speedtest is good 27mbps and so is the download speed (2.4 MB/s)
so now the problem boils down to router.

I google'd the Netgear problem with Comcast and found that we have disable WWM for Netgear. It was already disabled when I had initially configured it. Again played with few things no change. There were lot of suggestion to change the router and go with Comcast router.

However, I decided to reset the router again. used all the default option to connect wirelessly.

What's the download speed 4MB/s !!

Now I have backup of N600 old config and new config which works with expected speed. The problem is the netgear.cfg is encrypted and so do we want to solve this problem now. May be .. whenever time permits next time..

I took me more than a month to solve my home internet speed :(