Dne 8.2.2015 v 19:59 Drew... napsal(a):
Hi, I have 3 physical disks forming one volume group, with one logical volume. If i try to issue a standby command to the logical volume i get the following error.. |sudo hdparm -y /dev/mapper/VG0-LVstorage /dev/mapper/VG0-LVstorage: issuing standby command HDIO_DRIVE_CMD(standby) failed: Inappropriate ioctl for device| But if i issue a standby command to the individual disks in the volume group.. |sudo hdparm -y /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sda1: issuing standby command /dev/sdb1: issuing standby command /dev/sdc1: issuing standby command| This works fine! Is addressing individual disks the normal way to to spin down disks in a lvm volume group or will this cause file corruption. And if not, is there a safe way to achieve this or is it just not possible to spin down disks in a lvm. I would be grateful of any advice you could offer. I have spent some time searching around for some information on this & i can not find any documented on this anywhere. Thanks,
Yes - you need to 'hdparm' control 'real' devices/PVs. There is no point to try to control logical volumes. Imagine you could have 1000LVs on a single PV. Regards Zdenek _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
