Re: If a disk is mounted read only is it possible to corrupt it?

2002-07-22 Thread Jens Rehsack



Philip Hallstrom wrote:
 
 Hi all -
 This seems like an obvious answer, but I didn't see anything in
 the man pages or the FQ so...
 
 If I mount *all* of my partitions as read only (ignoring the problems of
 needing to write log files, etc. for now) and then cut the power to the
 server, is there any chance of corrupting the disk?  It seems that FreeBSD
 wouldn't do it, but would the disk itself do it?

That depends on the disk you're using. If you have problem with your
power supply, you should better think 'bout an uninterruptable power supply.

Jens

 Thanks!
 
 -philip
 
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Re: If a disk is mounted read only is it possible to corrupt it?

2002-07-22 Thread Brian T. Schellenberger

On Monday 22 July 2002 06:23 am, Jens Rehsack wrote:
| Philip Hallstrom wrote:
|  Hi all -
|  This seems like an obvious answer, but I didn't see anything in
|  the man pages or the FQ so...
| 
|  If I mount *all* of my partitions as read only (ignoring the problems of
|  needing to write log files, etc. for now) and then cut the power to the
|  server, is there any chance of corrupting the disk?  It seems that
|  FreeBSD wouldn't do it, but would the disk itself do it?
|
| That depends on the disk you're using. If you have problem with your
| power supply, you should better think 'bout an uninterruptable power
| supply.

Unless there is a power surge or physical trauma, a disk most certainly should 
not be capable of self-corrupting unless a write has been issued, and if 
they are mounted r/o then FreeBSD will never issue a write.



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http://www.babbleon.org

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RE: If a disk is mounted read only is it possible to corrupt it?

2002-07-22 Thread Balaji, Pavan


Corruption need not necessarily be s/w based. If your reader/writer is
screwed up, it might still corrupt it. Guess, I'm too paranoid ;-)


Pavan Balaji,
Intel Corporation

Only the Paranoid Survive  --  Andy Grove


 -Original Message-
 From: Brian T. Schellenberger [mailto:[EMAIL PROTECTED]]
 Sent: Monday, July 22, 2002 8:17 AM
 To: Jens Rehsack; Philip Hallstrom
 Cc: [EMAIL PROTECTED]
 Subject: Re: If a disk is mounted read only is it possible to corrupt
 it?
 
 
 On Monday 22 July 2002 06:23 am, Jens Rehsack wrote:
 | Philip Hallstrom wrote:
 |  Hi all -
 |  This seems like an obvious answer, but I didn't 
 see anything in
 |  the man pages or the FQ so...
 | 
 |  If I mount *all* of my partitions as read only (ignoring 
 the problems of
 |  needing to write log files, etc. for now) and then cut 
 the power to the
 |  server, is there any chance of corrupting the disk?  It seems that
 |  FreeBSD wouldn't do it, but would the disk itself do it?
 |
 | That depends on the disk you're using. If you have problem with your
 | power supply, you should better think 'bout an uninterruptable power
 | supply.
 
 Unless there is a power surge or physical trauma, a disk most 
 certainly should 
 not be capable of self-corrupting unless a write has been 
 issued, and if 
 they are mounted r/o then FreeBSD will never issue a write.
 
 
 
 -- 
 Brian, the man from Babble-On . . . .   [EMAIL PROTECTED] (personal)
 http://www.babbleon.org
 
 http://www.eff.org  
 http://www.programming-freedom.org 
 
 To Unsubscribe: send mail to [EMAIL PROTECTED]
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