关于/dev/rdsk/c0t0d0s0文件系统

calay

这个文件系统是干吗用的啊？/dev/rdsk/c0t0d0s0
是不是只保存超级块信息啊？
可以直接重建吗？ 然后恢复超级块？

多谢指点

jnet

这是裸设备哦！

calay

好像是的哦？那下面到底怎么回事情？
  4.Find the locations of alternate super blocks. BE SURE TO USE AN UPPERCASE -N. For

example:

      # newfs -N /dev/rdsk/c0t0d0s0
      /dev/rdsk/c0t0d0s0:     2048960 sectors in 1348 cylinders of 19 tracks,
      80 sectors 1000.5MB in 85 cyl groups (16 c/g, 11.88MB/g, 5696 i/g)
      super-block backups (for fsck -F ufs -o b=#) at:
      32, 24432, 48832, 73232, 97632, 122032, 146432, 170832, 195232, 219632,
      244032, 268432, 292832, 317232, 341632, 366032, 390432, 414832, 439232,
      463632, 488032, 512432, 536832, 561232, 585632, 610032, 634432, 658832,
      683232, 707632, 732032, 756432, 778272, 802672, 827072, 851472, 875872,
      900272, 924672, 949072, 973472, 997872, 1022272, 1290672, ...

   5.Using an alternate super block, run fsck(1M) on the disk. You might have to try more

than one alternate super block to make this to work. Pick a couple from the beginning, the

middle, and the end.

      # fsck -o b=<altblk> /dev/rdsk/c0t0d0s0

   6.The boot block is probably bad too. Restore it while you are booted from the CD-ROM.

      # /usr/sbin/installboot /usr/platform/architecture/lib/fs/ufs/bootblk
      /dev/rdsk/c0t0d0s0

   7.Reboot the operating environment.

      # reboot

有间茅屋

这个是,当你的超块由于非法断电等造成损坏时.用备份块来恢复超块.# newfs -N /dev/rdsk/c0t0d0s0 这个命令是查卡所有的备份块的数据块号. # fsck -o b=<altblk> /dev/rdsk/c0t0d0s0  这个是用指定的备份块来恢复超块