[Dirvish] HEADS UP: dirvish to UFS on Mac OS X might induce panics.

[Matthew Whittaker-Williams]

Bernd Haug wrote:
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> Hey there,
>
> While the backup to UFS seemed to work well when it worked, today I
> encountered 2 kernel panics while backing up. Both messaged "bad
> dir". Last one:
>
> - -----
> panic(cpu 0 caller 0x002E4D81): bad dir
> Backtrace, Format - Frame : Return Address (4 potential args on stack)
> 0x2501b9c8 : 0x128d1f (0x3c9540 0x2501b9ec 0x131df4 0x0)
> 0x2501ba08 : 0x2e4d81 (0x3e35f4 0x40ff4a8 0x1a01bc8 0x438)
> 0x2501ba38 : 0x2e533e (0x6979a3c 0x438 0x3e360c 0x0)
> [...]
> - -----
>
> I will investigate to find the root cause, but I'll have to be
> careful not to corrupt my filevault with frequent crashes.
>
> I made 3 Backups - 2006-10-27, 2006-10-28, 2006-10-29 - none on
> 10/30, then when I went for the backup today, it panic()ed twice.
>
> For now, pls just take care when going for UFS backups, it doesn't
> seem to work as well as my initial experience taught me.
>
> Yours, Bernd
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Dear Bernd,

This is probally caused due to some other problem.
I have been using dirvish for some time now and I backup and restore 
both UFS and UFS2 partitions <-> UFS 2 Partition.
Since the time I run dirvish I have never encounted these problems.
Are you sure it isn`t a disk problem (I/O errors)?

Regards

Matthew