[Resent: first copy had wrong From: address, and doesn't appear to have been accepted by the mailing list] In message <772FBCA525B8FB4C9299D8D27FD4A5AA04105A@ABCSYSEXC1.abcsystems.ch>, "M ichael Vogt" writes: >well ewen, what do you mean with types recognised from matching against = >/proc/devices? it contains the following: [...] Based on what I found when looking at LVM and ataraid issues: The function lvm_get_device_type() in tools/lib/lvm_check_partitioned_dev.c (LVM 1.0.7) is used to check that a device being considered for a LVM physical volume is of an appropriate type. It does this by comparing the device's number (ie, major/minor) against the list in /proc/devices, and ensuring that the driver associated with the major number is one of the ones in its list. It has the following device names in its list: -=- cut here -=- { "ide", LVM_DEVICE_TYPE_IDE }, /* IDE disk */ { "sd", LVM_DEVICE_TYPE_SD }, /* SCSI disk */ { "md", LVM_DEVICE_TYPE_MD }, /* Multiple Disk driver (SoftRAID) */ { "loop", LVM_DEVICE_TYPE_LOOP }, /* Loop device */ { "dasd", LVM_DEVICE_TYPE_DASD }, /* DASD disk (IBM S/390, zSeries) */ { "rd", LVM_DEVICE_TYPE_DAC960 }, /* DAC960 (2.2 kernel name) */ { "dac960", LVM_DEVICE_TYPE_DAC960 },/* DAC960 (2.4 kernel name) */ { "nbd", LVM_DEVICE_TYPE_NBD }, /* Network Block Device */ { "ida", LVM_DEVICE_TYPE_COMPAQ_SMART2 },/* Compaq SMART2 */ { "cciss", LVM_DEVICE_TYPE_COMPAQ_CISS },/* Compaq CISS array */ { "ubd", LVM_DEVICE_TYPE_UBD }, /* User-mode virtual block device */ { "ataraid", LVM_DEVICE_TYPE_ATARAID }, /* ATA Raid */ { "i2o_block", LVM_DEVICE_TYPE_I2O }, /* i2o disk */ { NULL, LVM_DEVICE_TYPE_INVALID } /* Device not recognized */ -=- cut here -=- If the device you're trying to use doesn't match one of those types, then LVM will refuse to use it, viz: >linuxsvm:/usr/src/linux # lvmdiskscan -vd >lvmdiskscan -- reading all disks / partitions (this may take a while...) >lvmdiskscan -- filling directory cache... ><1> lvm_dir_cache -- CALLED MICHU ><22> lvm_add_dir_cache -- CALLED with /dev/svmaa=20 ><22> lvm_add_dir_cache -- LEAVING with ret: NOT ADDED ><22> lvm_add_dir_cache -- CALLED with /dev/svmab=20 ><22> lvm_add_dir_cache -- LEAVING with ret: NOT ADDED ><22> lvm_add_dir_cache -- CALLED with /dev/svmac=20 ><22> lvm_add_dir_cache -- LEAVING with ret: NOT ADDED The "NOT ADDED" there means "didn't recognise /dev/svmac as a type of device that can have LVM on it". So at very least you'd need to change that table. You'll also need to add to the enumerated type (lvm_device_type_t) in liblvm.h, so that you have a value to put on the right hand side of that table in tools/lib/lvm_check_partitioned_dev.c. And there may well be some other areas that you need to add to as well. Since LVM 2 apparently supports control with regular expressions that might be a better choice than trying to hack support into LVM 1.0.7. (although LVM 2 isn't officially released yet AFAIK). Ewen _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
