I got a good one for a UNIX guru!
I had a power outage a day ago and when the power came back on my FreeBSD 4.6 webserver had problems. It said it was unable to mount /var and made me start in single user mode and said to run fsck MANUALY. So i did and this is now what i get.
www# fsck /dev/ad0s1e
** /dev/ad0s1e
BAD SUPER BLOCK: MAGIC NUMBER WRONG
/dev/ad0s1e: INCOMPLETE LABEL: type 4.2BSD fsize 16384, frag 0, cpg 64, size 39102273
So i did some research and found a few places that told we me to fix the Super Block with the alternative super block. So i ran this.
www# newfs -N /dev/ad0s1e
Warning: Block size and bytes per inode restrict cylinders per group to 385.
Warning: 2240 sector(s) in last cylinder unallocated
/dev/ad0s1e: 39102272 sectors in 9547 cylinders of 1 tracks, 4096 sectors
19092.9MB in 25 cyl groups (385 c/g, 770.00MB/g, 12288 i/g)
super-block backups (for fsck -b #) at:
32, 1576992, 3153952, 4730912, 6307872, 7884832, 9461792, 11038752, 12615712, 14192672, 15769632, 17346592, 18923552, 20500512, 22077472, 23654432, 25231392, 26808352, 28385312,
29962272, 31539232, 33116192, 34693152, 36270112, 37847072
Once I found the alternative blocks I tried this.
www# fsck -b 34693152 /dev/ad0s1e
Alternate super block location: 34693152
** /dev/ad0s1e
BAD SUPER BLOCK: MAGIC NUMBER WRONG
Running FreeBSD 4.6 on PIII 450
The System has 2 drives
Root is at /dev/da0 a 4.3 GB SCSI drive
And I am missing my /var that was on a 20GB IDE drive /dev/ad0
So I still can not fix or mount the /dev/ad0s1e drive. How do I fix BAD SUPER BLOCK: MAGIC NUMBER WRONG and mount the drive?
how can I fix INCOMPLETE LABEL? Is the drive file system toast? or can I recover the files?
Is there a way to recover the drive data and move it to the good drive?
Thank you for any help.
