fsdb&smartctl&/var/log/messages

[Mikolaj Golub]

On Mon, 12 Jul 2010 15:04:07 +0400 Dmitry Lunts wrote:

 DL> Mikolaj, thanks for your reply!


 >> As for me it looks like the following might has happened. Your filesystem
 >> block size is 16384 bytes. When reading +CONTENTS fs sent a request to the
 >> driver to read a block -- starting from 4007967 sector of 16384 / 512 = 32
 >> sectors. For one of these sectors (4007996) disk returned error. The driver
 >> reported about the error printing the address of the first sector of failed
 >> request.
 >>
 >> --
 >> Mikolaj Golub
 >>
 DL> Looks reasonable, but nevertheless
 DL> it's still unclear why fsdb->findblk <offset of LBA_of_first_error within
 DL> /dev/ad6s1d>
 DL>  returns nothing?

Playing a little with fsdb it looks like it will find only the first 4 sectors
of any inode's block (for fs with block size = 16K and fragment size = 2K), so
those that belong to the first fragment of the block.

 DL> And one more question. What if I try to remap this bad LBA sector (with dd)
 DL> ?
 DL> Will package database be irreversibly damaged,
 DL> or pkgdb -uF will cure it?
 DL> (Sorry,I'm not sophisticated in FreeBSD very much)
 DL> TIA,

 DL> -- 
 DL> С уважением, Дмитрий
 DL> Best regards, Dmitry
 DL> email: eingorn777 at gmail.com

-- 
Mikolaj Golub