Entire systems halts during DDS-2 tape backup

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5 total messages Started by Geoff Green Thu, 25 May 1995 00:00

#620

Author: Geoff Green
Date: Thu, 25 May 1995 00:00

16 lines
1155 bytes

I recently purchased a Conner 4326 DDS-2 tape drive, and it hangs
off my Adaptec 2842 SCSI controller. Small backups < 500M under 
DOS using Adaptec's software, or Linux (1.1.70) using tar seem to 
work OK.

When I try doing large backups under Linux, it seems to start OK,
but my system locks up at around the 1 gigabyte mark. Only a 
hard reset will restore it.

It's occurring when backing up normal user-level files, not device
file or anything weird like that. I haven't tested a large backup 
under DOS, as the bulk of my HD space uses ext2fs.

Any help *greatly* appreciated.

Geoff...

Re: Entire systems halts during DDS-2 tape backup

#621

Author: Craig Metz
Date: Tue, 30 May 1995 00:00

24 lines
1760 bytes

In article <3qf7mt$rso@bunyip.cc.uq.oz.au>,
Geoff Green <spart@mailbox.uq.edu.au> wrote:
>Just thought that anyone with a similar problem might like to know
>that the lockup problem went away after a kernel upgrade to 1.2.8
>
>Geoff Green (spart@bunyip.cc.uq.edu.au) wrote:
>: I recently purchased a Conner 4326 DDS-2 tape drive, and it hangs
>: off my Adaptec 2842 SCSI controller. Small backups < 500M under 
>: DOS using Adaptec's software, or Linux (1.1.70) using tar seem to 
>: work OK.
>
>: When I try doing large backups under Linux, it seems to start OK,
>: but my system locks up at around the 1 gigabyte mark. Only a 
>: hard reset will restore it.
>
>: It's occurring when backing up normal user-level files, not device
>: file or anything weird like that. I haven't tested a large backup 
>: under DOS, as the bulk of my HD space uses ext2fs.

	This is more likely than not a different problem, but has anyone else
noticed that, should a backup try to back up /proc/kcore, Linux hard locks?
(This has been so in every version I've ever tested)

									-Craig

Re: Entire systems halts during DDS-2 tape backup

#622

Author: Geoff Green
Date: Tue, 30 May 1995 00:00

20 lines
1454 bytes

Just thought that anyone with a similar problem might like to know
that the lockup problem went away after a kernel upgrade to 1.2.8

Geoff Green (spart@bunyip.cc.uq.edu.au) wrote:
: I recently purchased a Conner 4326 DDS-2 tape drive, and it hangs
: off my Adaptec 2842 SCSI controller. Small backups < 500M under 
: DOS using Adaptec's software, or Linux (1.1.70) using tar seem to 
: work OK.

: When I try doing large backups under Linux, it seems to start OK,
: but my system locks up at around the 1 gigabyte mark. Only a 
: hard reset will restore it.

: It's occurring when backing up normal user-level files, not device
: file or anything weird like that. I haven't tested a large backup 
: under DOS, as the bulk of my HD space uses ext2fs.

: Any help *greatly* appreciated.

: Geoff...

Re: Entire systems halts during DDS-2 tape backup

#623

Author: Geoff Green
Date: Wed, 31 May 1995 00:00

10 lines
1127 bytes

Craig Metz (cmetz@sundance.itd.nrl.navy.mil) wrote:

: 	This is more likely than not a different problem, but has anyone else
: noticed that, should a backup try to back up /proc/kcore, Linux hard locks?
: (This has been so in every version I've ever tested)

Well, it is a different problem, as I excluded the entire /proc directory from
all my backups (because I too have run into this problem in the past).

Geoff...

Re: Entire systems halts during DDS-2 tape backup

#624

Author: Douglas Setser
Date: Wed, 07 Jun 1995 00:00

27 lines
1767 bytes

In article <3qfdaa$2cd@ra.nrl.navy.mil> cmetz@sundance.itd.nrl.navy.mil (Craig Metz) writes:
>From: cmetz@sundance.itd.nrl.navy.mil (Craig Metz)
>Subject: Re: Entire systems halts during DDS-2 tape backup
>Date: 30 May 1995 15:23:54 GMT

>In article <3qf7mt$rso@bunyip.cc.uq.oz.au>,
>Geoff Green <spart@mailbox.uq.edu.au> wrote:
>>Just thought that anyone with a similar problem might like to know
>>that the lockup problem went away after a kernel upgrade to 1.2.8
>>
>>Geoff Green (spart@bunyip.cc.uq.edu.au) wrote:
>>: I recently purchased a Conner 4326 DDS-2 tape drive, and it hangs...

>        This is more likely than not a different problem, but has anyone else
>noticed that, should a backup try to back up /proc/kcore, Linux hard locks?
>(This has been so in every version I've ever tested)

>                                                                        -Craig


This is because /proc/kcore is either your RAM or your swap partition (I don't 
remember which).  everything in the /proc directory is in a constant state of 
flux, changing as you call and dismiss programs.

Hope this helps,

Douglas Setser

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