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From: Bill Davidsen <davidsen@tmr.com>
To: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: Helge Hafting <helge.hafting@aitel.hist.no>,
	Matthias Andree <matthias.andree@gmx.de>,
	Alan Cox <alan@lxorguk.ukuu.org.uk>,
	Arjan van de Ven <arjan@infradead.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Linux does not care for data integrity
Date: Sat, 04 Jun 2005 09:37:15 -0400	[thread overview]
Message-ID: <42A1AE8B.5000907@tmr.com> (raw)
In-Reply-To: <20050602133357.GN23621@csclub.uwaterloo.ca>

Lennart Sorensen wrote:

>On Thu, Jun 02, 2005 at 08:00:34AM -0400, Bill Davidsen wrote:
>  
>
>>Unfortunately even drives in a dual power tray with redundany power from 
>>separate UPS sources will occasionally have a power failure. Proved that 
>>last month, the power strip in the rack failed, dumped all the load on 
>>the other leg, the surge tripped a breaker. Had an APC UPS in my office 
>>fail in a mode which dropped power, waited for the battery to trickle 
>>charge to charge the battery a bit, then repeat. Looks to be losing half 
>>of a full wave rectifier.
>>
>>The point is that power failures WILL HAPPEN, even with good backups. 
>>The goal should be to prevent excessive and avoidable data damage when 
>>it does.
>>
>>Shameless plug: for office use I changed from APC to Belkin on all new 
>>units, they have had Linux drivers for some time now, and I like to 
>>support those who support Linux.
>>    
>>
>
>Hasn't apcupsd existed for at least a decade?  Works rather well for me.
>Hard to imagine better linux/unix support than APC seems to have
>provided so far.
>  
>

I thought apcuspd was a third party project, sourceforce shows it as a 
project. Didn't know APC was actually "providing" anything, is the 
driver on the CD now? Sure wasn't on the APC CD I had, I did have it at 
one time, but it didn't come with the UPS (at that time).

>For some reason Belkin screms cheap junk to me.  Maybe that's because
>that is what you always see for sale with that brand on it.  They may
>have nice stuff that I just haven't seen because it isn't carried by
>most stores.
>
You don't have Staples or Wal-Mart? Office Max did drop the UPS, the 
local store manager said the issue was margin, hadn't had enough returns 
on either brand to be meaningful.

-- 
bill davidsen <davidsen@tmr.com>
  CTO TMR Associates, Inc
  Doing interesting things with small computers since 1979


  reply	other threads:[~2005-06-04 13:37 UTC|newest]

Thread overview: 142+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-05-13  5:51 Hyper-Threading Vulnerability Gabor MICSKO
2005-05-13 12:47 ` Barry K. Nathan
2005-05-13 14:10   ` Jeff Garzik
2005-05-13 14:23     ` Daniel Jacobowitz
2005-05-13 14:32       ` Jeff Garzik
2005-05-13 17:13         ` Andy Isaacson
2005-05-13 18:30           ` Vadim Lobanov
2005-05-13 19:02             ` Andy Isaacson
2005-05-15  9:31               ` Adrian Bunk
2005-05-13 17:14         ` Gabor MICSKO
2005-05-13 20:23     ` Barry K. Nathan
2005-05-13 18:03 ` Andi Kleen
2005-05-13 18:34   ` Eric Rannaud
2005-05-13 18:35   ` Alan Cox
2005-05-13 18:49     ` Scott Robert Ladd
2005-05-13 19:08       ` Andi Kleen
2005-05-13 19:36       ` Grant Coady
2005-05-16 17:00       ` Linus Torvalds
2005-05-16 12:37         ` Tommy Reynolds
2005-05-18 19:07     ` Bill Davidsen
2005-05-13 18:38   ` Richard F. Rebel
2005-05-13 19:05     ` Andi Kleen
2005-05-13 21:26       ` Andy Isaacson
2005-05-13 21:59         ` Matt Mackall
2005-05-13 22:47           ` Alan Cox
2005-05-13 23:00             ` Lee Revell
2005-05-13 23:27               ` Dave Jones
2005-05-13 23:38                 ` Lee Revell
2005-05-13 23:44                   ` Dave Jones
2005-05-14  7:37                     ` Lee Revell
2005-05-14 15:33                       ` Andrea Arcangeli
2005-05-15  1:07                         ` Christer Weinigel
2005-05-15  9:48                         ` Andi Kleen
2005-05-14 15:23                   ` Alan Cox
2005-05-14 15:45                     ` andrea
2005-05-15 13:38                       ` Mikulas Patocka
2005-05-16  7:06                         ` andrea
2005-05-14 16:30                     ` Lee Revell
2005-05-14 16:44                       ` Arjan van de Ven
2005-05-14 17:56                         ` Lee Revell
2005-05-14 18:01                           ` Arjan van de Ven
2005-05-14 19:21                             ` Lee Revell
2005-05-14 19:48                               ` Arjan van de Ven
2005-05-14 23:40                                 ` Lee Revell
2005-05-15  7:30                                   ` Arjan van de Ven
2005-05-15 20:41                                     ` Alan Cox
2005-05-15 20:48                                       ` Arjan van de Ven
2005-05-15 21:10                                         ` Lee Revell
2005-05-15 22:55                                           ` Dave Jones
2005-05-15 23:10                                             ` Lee Revell
2005-05-16  7:25                                               ` Arjan van de Ven
2005-05-15  9:37                                   ` Andi Kleen
2005-05-15  3:19                                 ` dean gaudet
2005-05-15 10:01                             ` Andi Kleen
2005-05-15 10:23                               ` 2.6.4 timer and helper functions kernel
2005-05-19  0:38                                 ` George Anzinger
2005-05-15  9:33                           ` Hyper-Threading Vulnerability Adrian Bunk
2005-05-14 17:04                       ` Jindrich Makovicka
2005-05-14 18:27                         ` Lee Revell
2005-05-15  9:58                       ` Andi Kleen
2005-05-14  0:39         ` dean gaudet
2005-05-16 13:41           ` Andrea Arcangeli
2005-05-15  9:43         ` Andi Kleen
2005-05-15 18:42           ` David Schwartz
2005-05-15 18:56             ` Dr. David Alan Gilbert
2005-05-16  7:10           ` Eric W. Biederman
2005-05-16 11:04             ` Andi Kleen
2005-05-16 19:14               ` Eric W. Biederman
2005-05-16 20:05                 ` Valdis.Kletnieks
2005-05-15 14:00         ` Mikulas Patocka
2005-05-15 14:26         ` Andi Kleen
2005-05-13 23:32       ` Paul Jakma
2005-05-14 16:29         ` Paul Jakma
2005-05-13 19:14     ` Jim Crilly
2005-05-13 20:18       ` Barry K. Nathan
2005-05-13 23:14         ` Jim Crilly
2005-05-13 19:16   ` Diego Calleja
2005-05-13 19:42     ` Frank Denis (Jedi/Sector One)
2005-05-15  9:54     ` Andi Kleen
2005-05-15 13:51       ` Mikulas Patocka
2005-05-15 14:12         ` Andi Kleen
2005-05-15 14:21           ` Mikulas Patocka
2005-05-15 14:52           ` Tomasz Torcz
2005-05-15 15:00             ` Disk write cache (Was: Hyper-Threading Vulnerability) Mikulas Patocka
2005-05-15 15:21               ` Gene Heskett
2005-05-15 15:29                 ` Jeff Garzik
2005-05-15 16:27                   ` Disk write cache Kenichi Okuyama
2005-05-15 16:43                     ` Jeff Garzik
2005-05-15 16:50                       ` Kyle Moffett
2005-05-15 16:56                       ` Andi Kleen
2005-05-15 20:44                         ` Andrew Morton
2005-05-15 23:31                           ` Cache based insecurity/CPU cache/Disk Cache Tradeoffs Brian O'Mahoney
2005-05-15 16:58                       ` Disk write cache Mikulas Patocka
2005-05-15 17:20                       ` Kenichi Okuyama
2005-05-16 11:02                       ` Linux does not care for data integrity (was: Disk write cache) Matthias Andree
2005-05-16 11:12                         ` Arjan van de Ven
2005-05-16 11:29                           ` Matthias Andree
2005-05-16 14:02                             ` Arjan van de Ven
2005-05-16 14:48                               ` Matthias Andree
2005-05-16 15:06                                 ` Alan Cox
2005-05-16 15:40                                   ` Matthias Andree
2005-05-16 18:04                                     ` Alan Cox
2005-05-16 19:11                                       ` Linux does not care for data integrity Florian Weimer
2005-05-29 21:02                                   ` Linux does not care for data integrity (was: Disk write cache) Greg Stark
2005-05-29 21:16                                     ` Matthias Andree
2005-05-30  6:04                                       ` Greg Stark
2005-05-30  8:21                                         ` Matthias Andree
2005-06-01 19:02                                       ` Linux does not care for data integrity Bill Davidsen
2005-06-01 22:02                                         ` Matthias Andree
2005-06-02  0:12                                           ` Bill Davidsen
2005-06-02  0:36                                         ` Jeff Garzik
2005-06-02  1:37                                           ` Bill Davidsen
2005-06-02  1:54                                             ` Jeff Garzik
2005-06-02  8:53                                         ` Helge Hafting
2005-06-02 12:00                                           ` Bill Davidsen
2005-06-02 13:33                                             ` Lennart Sorensen
2005-06-04 13:37                                               ` Bill Davidsen [this message]
2005-06-04 15:31                                                 ` Bernd Eckenfels
2005-05-16 14:57                           ` Linux does not care for data integrity (was: Disk write cache) Alan Cox
2005-05-16 13:48                         ` Linux does not care for data integrity Mark Lord
2005-05-16 14:59                           ` Matthias Andree
2005-05-16  1:56                   ` Disk write cache (Was: Hyper-Threading Vulnerability) Gene Heskett
2005-05-16  2:11                     ` Jeff Garzik
2005-05-16  2:24                     ` Mikulas Patocka
2005-05-16  3:05                       ` Gene Heskett
2005-05-16  2:32                     ` Mark Lord
2005-05-16  3:08                       ` Gene Heskett
2005-05-16 13:44                         ` Mark Lord
2005-05-18  4:03                       ` Eric D. Mudama
2005-05-15 16:24                 ` Mikulas Patocka
2005-05-16 11:18                   ` Matthias Andree
2005-05-16 14:33                     ` Jeff Garzik
2005-05-16 15:26                       ` Richard B. Johnson
2005-05-16 16:00                         ` [OT] drive behavior on power-off (was: Disk write cache) Matthias Andree
2005-05-16 18:11                       ` Disk write cache (Was: Hyper-Threading Vulnerability) Valdis.Kletnieks
2005-05-16 14:54                     ` Alan Cox
2005-05-17 13:15                       ` Bill Davidsen
2005-05-17 21:41                         ` Kyle Moffett
2005-05-18  4:06                     ` Eric D. Mudama
2005-05-15 21:38                 ` Tomasz Torcz
2005-05-16 14:50               ` Alan Cox
2005-05-15 15:00             ` Hyper-Threading Vulnerability Arjan van de Ven

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