drive-spindown
Hello, all
I'd like to have the drives of my LVM-system (SuSE 8.0) to spin down when the volume is not used (it's a data-volume only, the system resides somewhere else). The volume consists of one partition of hda and drives hdb and hdc are completely dedicated to it.
I tried to set a spindown-time in BIOS as well as hdparm -S, but strangely only hdc powers down (checked that with hdparm -C). I don't really expect hda to power down as the system resides on it, but hdb obviously should. Does anyone have an idea why it doesn't?
Signature · 3 lines
cheers, Michael
Michael,
that could be either some regular access to extents residing on hdb or a drive spin down flaw in the IDE driver in case "hdparm -S" went proper.
Quoted 21 lines · Michael Frotscher
Hello, all
I'd like to have the drives of my LVM-system (SuSE 8.0) to spin down when the volume is not used (it's a data-volume only, the system resides somewhere else). The volume consists of one partition of hda and drives hdb and hdc are completely dedicated to it.
I tried to set a spindown-time in BIOS as well as hdparm -S, but strangely only hdc powers down (checked that with hdparm -C). I don't really expect hda to power down as the system resides on it, but hdb obviously should. Does anyone have an idea why it doesn't?
Signature · 9 lines
cheers, Michael _______________________________________________ linux-lvm mailing list [email protected] http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
Signature · 15 lines
Regards,
Heinz -- The LVM Guy --
*** Software bugs are stupid.
Nevertheless it needs not so stupid people to solve them ***
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Heinz Mauelshagen Sistina Software Inc.
Senior Consultant/Developer Am Sonnenhang 11
56242 Marienrachdorf
Germany
[email protected] +49 2626 141200
FAX 924446
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-Quoted 1 line · Heinz J . Mauelshagen
that could be either some regular access to extents residing on hdb
So you are saying that the volume can be used (like accessing hdb) even though hdc is spun down? Amazing - I did not know that was possible. But if, it is a good explanation as my volume still has plenty of space so hdc would not be accessed until hdb is full.
Signature · 3 lines
Cheers, Michael
Quoted 6 lines · Michael Frotscher
Quoted 1 line · Heinz J . Mauelshagen
that could be either some regular access to extents residing on hdb
So you are saying that the volume can be used (like accessing hdb) even though hdc is spun down?
Correct.
If there's just accesses to extents mapped onto hdb (i.e. from the filesystem), hdc will never spin up (unless somthing outside LVM triggers it ;-)
Quoted 2 lines
But if, it is a good explanation as my volume still has plenty of space so hdc would not be accessed until hdb is full.
See "pvdisplay -v /dev/hd[bc]" or "lvdisplay -v YourLV" for your logical volume(s) to see what is mapped onto what.
Quoted 10 lines
Signature · 9 lines
Cheers, Michael _______________________________________________ linux-lvm mailing list [email protected] http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
Signature · 15 lines
Regards,
Heinz -- The LVM Guy --
*** Software bugs are stupid.
Nevertheless it needs not so stupid people to solve them ***
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Heinz Mauelshagen Sistina Software Inc.
Senior Consultant/Developer Am Sonnenhang 11
56242 Marienrachdorf
Germany
[email protected] +49 2626 141200
FAX 924446
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-