[ILUG] backup options...

[Paul Jakma]

On Tue, 19 Mar 2002, kevin lyda wrote:

>     disk:
> 	needs to be hotswap.  ide hot swap seems to have poor support

apparently it's there already, see hdparm man page -U and -R options 
- not very informative though, but the hdparm source comes with a 
'idectl' script that uses those options:

[root at dunlop contrib]# cat /proc/ide/hdc/model 
COMPAQ SC-148F
[root at dunlop contrib]# ./idectl 1 off
[root at dunlop contrib]# cat /proc/ide/hdc/model 
cat: /proc/ide/hdc/model: No such file or directory
[root at dunlop contrib]# ./idectl 1 on 
[root at dunlop contrib]# cat /proc/ide/hdc/model 
COMPAQ SC-148F
[root at dunlop contrib]# ./idectl 1 off
[root at dunlop contrib]# cat /proc/ide/hdc/model 
cat: /proc/ide/hdc/model: No such file or directory
[root at dunlop contrib]# ./idectl 1 on
[root at dunlop contrib]# cat /proc/ide/hdc/model 
COMPAQ SC-148F
[root at dunlop contrib]# tail /var/log/messages
Mar 20 02:26:38 dunlop kernel: hdc: ATAPI 48X CD-ROM drive, 128kB Cache, DMA
Mar 20 02:27:45 dunlop kernel: hdc: COMPAQ SC-148F, ATAPI CD/DVD-ROM drive
Mar 20 02:27:45 dunlop kernel: ide1 at 0x170-0x177,0x376 on irq 15
Mar 20 02:27:45 dunlop kernel: hdc: ATAPI 48X CD-ROM drive, 128kB Cache, DMA
Mar 20 02:28:11 dunlop kernel: hdc: COMPAQ SC-148F, ATAPI CD/DVD-ROM drive
Mar 20 02:28:11 dunlop kernel: ide1 at 0x170-0x177,0x376 on irq 15
Mar 20 02:28:11 dunlop kernel: hdc: ATAPI 48X CD-ROM drive, 128kB Cache, DMA
Mar 20 02:28:29 dunlop kernel: hdc: COMPAQ SC-148F, ATAPI CD/DVD-ROM drive
Mar 20 02:28:29 dunlop kernel: ide1 at 0x170-0x177,0x376 on irq 15
Mar 20 02:28:29 dunlop kernel: hdc: ATAPI 48X CD-ROM drive, 128kB Cache, DMA

(kernel 2.4.17) so it seems to work fine... you just need an IDE cage
that allows hot-swap safely.

--paulj