[NTLUG:Discuss] dcoding dmesg

[al]

Rusty Haddock wrote:
> 
> al wrote:
>     >I just upgraded from MDK7.0 to 7.1
>     >I now notice these errors stacking up in dmesg
>     >I dont know how to read the dev value in these line to
>     >decode what has a problem (or what that problem is)
>     >can anyone help?
>     >do I need to panic?
>     >thanks
>     >aal
>     >
>     >dev 0b:00 blksize=2048 blocknr=331850 sector=1327400 size=2048
> 
> dev 0b:00 probably refers to dev major=11, minor=0 (those were hex
> values in the error message).  Find this by doing typing the following
> command in a shell window:
> 
>     ls -l /dev | grep 11,       # Yes, the comma is pertinent!
> 
> Here's what I got:
> 
>     brw-rw-rw-   1 root     disk      11,   0 May  5  1998 scd0
>     brw-rw-rw-   1 root     disk      11,   1 May  5  1998 scd1
>     brw-rw-rw-   1 root     disk      11,   2 May  5  1998 scd2
>     brw-rw-rw-   1 root     disk      11,   3 May  5  1998 scd3
>     brw-rw-rw-   1 root     disk      11,   4 May  5  1998 scd4
>     brw-rw-rw-   1 root     disk      11,   5 May  5  1998 scd5
>     brw-rw-rw-   1 root     disk      11,   6 May  5  1998 scd6
>     brw-rw-rw-   1 root     disk      11,   7 May  5  1998 scd7
>                                       ^^   ^^
>                                 Major -+    |
>                                 Minor ------+
> 
> On my RH system dev 0b:00 is my first SCSI CD-ROM drive.  The blksize=,
> blocknr=, sector, size= items pretty much confirms that it's a block
> device, like a disk or a CD-ROM.
> 
> Sorry, but I really can't tell you what's going wrong.  Maybe a CD was
> mount'ed and somehow replaced before the old one was umount'ed???
> 
>         -Rusty-
> 
>     >count=1
>     >attempt to access beyond end of device
>     >0b:00: rw=0, want=621528, limit=356560
>     >dev 0b:00 blksize=2048 blocknr=310763 sector=1243052 size=2048
>     >count=1
>     >attempt to access beyond end of device
>     >0b:00: rw=0, want=621530, limit=356560
>     >dev 0b:00 blksize=2048 blocknr=310764 sector=1243056 size=2048
>     >count=1
>     >attempt to access beyond end of device
>     >0b:00: rw=0, want=621528, limit=356560
>     >dev 0b:00 blksize=2048 blocknr=310763 sector=1243052 size=2048
>     >count=1
>     >attempt to access beyond end of device
>     >0b:00: rw=0, want=621530, limit=356560
>     >dev 0b:00 blksize=2048 blocknr=310764 sector=1243056 size=2048
>     >count=1
>     >[root at aalh applnk]#
>     >
>     >_______________________________________________
>     >http://ntlug.org/mailman/listinfo/discuss
> 
> --
>    _____        Rusty Haddock  =  KD4WLZ  =  rusty at fe2o3.lonestar.org
> |\/   o \   o
> |   (  -<  O o  Thanks, Sparky!          Charles M Schulz (1922-2000)
> |/\__V__/


thanks rusty