Re: HDD,SSD,diagnostic,integrity verify tools.Free,Opensource.

2009-07-29 Thread Henrique de Moraes Holschuh
On Sun, 26 Jul 2009, Osamu Aoki wrote:
 On Sat, Jul 25, 2009 at 12:07:35PM -0700, Luis Maceira wrote:
  What is the best tool available in the free,OpenSource world to verify
  the integrity of HDD but,specially SSD drives(the fading capacity problem
  with too many writes to the same blocks).It is not only a problem of
  filesystem check,it is more physical of the drive itself.Right now,I do
  not remember of any.
 
 smartd in smartmontools package - more physical of the drive
 fsck- filesystem check

dd and badblocks - excercise the drive and to find out bad sectors on
drives with bad firmware or that have run out of remapping area (will hasten
the death of your SSD, though).

When in doubt, stick to smartmontools like Osamu said.

-- 
  One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie. -- The Silicon Valley Tarot
  Henrique Holschuh


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Re: HDD,SSD,diagnostic,integrity verify tools.Free,Opensource.

2009-07-26 Thread Stefan Monnier
 What is the best tool available in the free,OpenSource world to verify
 the integrity of HDD but,specially SSD drives (the fading capacity
 problem with too many writes to the same blocks).  It is not only
 a problem of filesystem check,it is more physical of the drive itself.
 Right now, I do not remember of any.

HDD and SSD both work pretty hard at hiding physical limitations from
the abstraction they present to the OS.  The only way to get lower-level
info is S.M.A.R.T, as far as I know.

But, unless your use of SSHs is very atypical, there's no reason to
worry about it.  E.g. the problem with too many writes to the same
blocks is solved by the SSD's wear-levelling algorithm.


Stefan


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Re: HDD,SSD,diagnostic,integrity verify tools.Free,Opensource.

2009-07-25 Thread Osamu Aoki
On Sat, Jul 25, 2009 at 12:07:35PM -0700, Luis Maceira wrote:
 
 What is the best tool available in the free,OpenSource world to verify
 the integrity of HDD but,specially SSD drives(the fading capacity problem
 with too many writes to the same blocks).It is not only a problem of
 filesystem check,it is more physical of the drive itself.Right now,I do
 not remember of any.

smartd in smartmontools package - more physical of the drive
fsck- filesystem check

Osamu


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