[1745] in linux-scsi channel archive
Re: Is SCSI partitioning universally readable/writable?
daemon@ATHENA.MIT.EDU (Marc SCHAEFER)
Wed Apr 23 04:41:47 1997
From: schaefer@alphanet.ch (Marc SCHAEFER)
Date: 22 Apr 1997 21:20:47 +0200
Apparently-To: linux-scsi@vger.rutgers.edu
To: ;@unlisted-recipients (no To-header on input)
lbliao (lbliao@alumnae.caltech.edu) wrote:
> For example partitions were made using aha 1515, and not the card is 2940,
> will it read the disk? Is there any portability to the SCSI disk or format?
> Is there upward compatibility?
Yes, as long as you use PC based partitionning. There is no
portability between architectures on the partition nor
filesystem level (the latter mainly for endianess issues).
However, a
tar cvf /dev/sda some_file
will always work, assuming /dev/sda is the raw device.
> One reason for buying SCSI disk is that it can be externally connectable to
> any PC which has a scsi card with working drivers. Then in the even that the
> computer fails, one can take the disk and connect to any other working computer
> with a boot disk that has the drivers for scsi installed. The disk would be
> mounted and read. If the disk is not portable, then that defeats the whole
> purpose and one of the major advantages of SCSI.
Yes, that's possible.
> is recognised and read by the card, but a new scsi hard disk that I bought
> and is seen by my desktop is NOT read by the card although it is recognised
> by it.
Can you see it on boot ? Does Linux see it (/proc/scsi) ? Are there
any specific log about it (e.g. timeouts, protocol errors, etc) ? Is
the partition table readable/updatable ? Does mke2fs succeed in
``formatting'' the disk ? Is there any way to do a ``low-level''
format (SCSI format, indeed) from the Adapter's BIOS ?
