Christoph Hellwig <hch <at> infradead.org> writes: > > Short answer is: don't do it. Use the SES interface for your example, > or ensure a proper API exists if the example was just made up. > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo <at> vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > > Thanks Christoph. Power cycling of drive was an example of how some of the management IOCTLs provided by the SCSI LLD driver could be used. So your suggestion is dont' use ceph for this purpose(though its possible) but write or use an existing utility(if HBA vendor provides one) that issues IOCTLs to the SCSI/SAS LLD HBA driver directly? Related question is if a device like /dev/sda[1..n] is assigned a OSD and is being used by ceph can another user application continue to open and read/write to the /dev/sda1 device directly. How ceph prevents such scenarios? thanks, Naveen -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
