Re: [osol-discuss] Finding external USB disks
I'm looking to check for the presence of various devices in a script run in cron, so the device may not have been connected *recently*. You can use rmformat and store the o/p in a file Next time you run rmformat, diff it with the old o/p stored in the file. If there are any differences, then you parse further to find out if a device was added recently Thanks, Tirthankar This message posted from opensolaris.org ___ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
Re: [osol-discuss] Finding external USB disks
Tirthankar wrote: I'm looking to check for the presence of various devices in a script run in cron, so the device may not have been connected *recently*. You can use rmformat and store the o/p in a file Next time you run rmformat, diff it with the old o/p stored in the file. If there are any differences, then you parse further to find out if a device was added recently Yes, but none of that output gives me any clue which drive is attached! The closest to any identification info is the manufacturer and part number, but since I'm starting this project with two brand-new identical drives, that doesn't help distinguish them in the least! -- David Dyer-Bennet, [EMAIL PROTECTED]; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info ___ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
Re: [osol-discuss] Finding external USB disks
What are the approaches to finding what external USB disks are currently connected? What's wrong with $ iostat -En ? This message posted from opensolaris.org ___ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
Re: [osol-discuss] Finding external USB disks
W. Wayne Liauh wrote: What are the approaches to finding what external USB disks are currently connected? What's wrong with $ iostat -En ? There, I learned another thing. That's always good. I don't immediately grasp how it's a good solution to my problem, though. It appears to be listing the removable drive under every drive designation it's ever been connected as (which changes depending on which USB port it's plugged in to and perhaps what else was also plugged in at that time), so it doesn't give me a unique pointer to the drive. It also doesn't give me any usable identifying information on the drive, just the manufacturer and model (my system needs to handle two *different* drives of the *same* model; in fact they're arriving tomorrow). So I've got c4t0d0p0, c5t0d0p0, and c5t0d0p0 all reporting a WDC WD1600JB. But that's really all the same drive. And there's a serial number field in the output, but it's blank in all three cases (if that were filled in I could tell *which drive* it was). -- David Dyer-Bennet, [EMAIL PROTECTED]; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info ___ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
[osol-discuss] Finding external USB disks
What are the approaches to finding what external USB disks are currently connected? I'm starting on backup scripts, and I need to check which volumes are present before I figure out what to back up to them. I suppose I could just try all the ones that I know about and see which are there (the list is small enough this is actually feasible), but it's inelegant. (On Solaris Nevada, currently build 76 I think). The external USB backup disks in question have ZFS filesystems on them, which may make a difference in finding them perhaps? I've glanced at Tim Foster's autobackup and related scripts, and they're all about being triggered by the plug connection being made; which is not what I need. I don't actually want to start the big backup when I plug in (or power on) the drive in the evening, it's supposed to wait until late (to avoid competition with users). (His autosnapshot script may be just what I need for that part, though.) -- David Dyer-Bennet, [EMAIL PROTECTED]; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info ___ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
Re: [osol-discuss] Finding external USB disks
On 12/13/07, David Dyer-Bennet [EMAIL PROTECTED] wrote: What are the approaches to finding what external USB disks are currently connected? I'm starting on backup scripts, and I need to check which volumes are present before I figure out what to back up to them. I suppose I could just try all the ones that I know about and see which are there (the list is small enough this is actually feasible), but it's inelegant. (On Solaris Nevada, currently build 76 I think). The external USB backup disks in question have ZFS filesystems on them, which may make a difference in finding them perhaps? I've glanced at Tim Foster's autobackup and related scripts, and they're all about being triggered by the plug connection being made; which is not what I need. I don't actually want to start the big backup when I plug in (or power on) the drive in the evening, it's supposed to wait until late (to avoid competition with users). (His autosnapshot script may be just what I need for that part, though.) You can try 'rmformat' to see all removable media connected. Also try 'dmesg' after connecting the device. ~Anil ___ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
Re: [osol-discuss] Finding external USB disks
On Dec 13, 2007 12:35 AM, David Dyer-Bennet [EMAIL PROTECTED] wrote: What are the approaches to finding what external USB disks are currently connected? I'm starting on backup scripts, and I need to check which volumes are present before I figure out what to back up to them. I suppose I could just try all the ones that I know about and see which are there (the list is small enough this is actually feasible), but it's inelegant. (On Solaris Nevada, currently build 76 I think). The external USB backup disks in question have ZFS filesystems on them, which may make a difference in finding them perhaps? I've glanced at Tim Foster's autobackup and related scripts, and they're all about being triggered by the plug connection being made; which is not what I need. I don't actually want to start the big backup when I plug in (or power on) the drive in the evening, it's supposed to wait until late (to avoid competition with users). (His autosnapshot script may be just what I need for that part, though.) there is cfgadm i guess, check cfgadm_usb(1M) nacho ___ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
Re: [osol-discuss] Finding external USB disks
Anil Gulecha wrote: On 12/13/07, David Dyer-Bennet [EMAIL PROTECTED] wrote: What are the approaches to finding what external USB disks are currently connected? You can try 'rmformat' to see all removable media connected. Ah, that's looking useful. Thanks also to those who pointed out cfgadm. Now, what's that Label reported by rmformat? It's unknown in all the examples I have to try. Is this something I can set with rmformat or fdisk or something? So that I could recognize the volumes by a string I applied to it myself? Or are there serial numbers accessible on USB hard drives that I can get access to? That would be a unique identifier for each drive, and I could store those and use those to recognize which ones were mounted. Also try 'dmesg' after connecting the device. That last doesn't fit my model, I'm looking to check for the presence of various devices in a script run in cron, so the device may not have been connected *recently*. -- David Dyer-Bennet, [EMAIL PROTECTED]; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info ___ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
