Hi folks For the libata-pata support we need to change fstab on several arches to not break all systems which uses them. We need to decide which arches needs this rewrite now and which value should be filed in. There are 5 or so variants: - /dev/disk/by-id: Includes disk serial number or wwnn. - /dev/disk/by-label: Filesystem label. - /dev/disk/by-path: Includes pci device and lun. - /dev/disk/by-uuid: UUID of filesystem. Maybe we want the uuid of md devices also? - LABEL= - UUID= We have to support the following device types, I think: - pata, sata, parallel scsi, sas No problem, I would prefer by-id. It should be stable for this types of devices. So a user needs to fix this entry for a disk replacement. - fiberchannel by-id. It includes the wwnn, which is defined as unique for each device. If someone have more than one path to the disk, they need multipath-tools anyway, which creates /dev/mapper/$wwnn. - iscsi This is a problem. iscsi have a stable identifier for a device, but it is not exported by udev. udev provides the following: | /dev/disk/by-id/scsi-16465616462656166333a3100000000000000000000000000 This is the usual disc identification. And: | /dev/disk/by-path/ip-192.168.9.13:3260-iscsi-iqn.2007-07.org.zseries.debian00:storage.org.zseries.debian04v4-lun-1 This includes the ip of the target, the id and the lun. The id is defined to be unique for a device. Maybe we want something like by-id/iscsi-iqn.2007-07.org.zseries.debian00:storage.org.zseries.debian04v4-lun-1. More than one path needs multipath-tools also. The following devices can be ignored: - md* - mapper/* - lvm symlinks Or should we ignore all devices which we don't know about? Bastian -- You can't evaluate a man by logic alone. -- McCoy, "I, Mudd", stardate 4513.3
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