Am Samstag, den 28.02.2009, 10:54 -0700 schrieb Curtis Gedak: > When a new partition is created, the "dmraid -ay" command can be used to > create the missing entry in /dev/mapper. The opposite situation does > not appear to work wherein I delete a partition. > > Which command should be used to remove and/or update the /dev/mapper > entries when a partition is deleted? Use "dmsetup remove /dev/mapper/..." on the respective partition device. Heinz > > Attached is a log of my session where I used parted to delete a > partition, and then tried to delete all the /dev/mapper entries with > "dmraid -an". > > Regards, > Curtis Gedak > Maintainer of GParted > > einfaches Textdokument-Anlage (dmraid-delete-partition.txt) > ***** > ***** Print dmraid version information > ***** > > gedakc@quad:/dev/mapper$ sudo dmraid --version > dmraid version: 1.0.0.rc14 (2006.11.08) > dmraid library version: 1.0.0.rc14 (2006.11.08) > device-mapper version: 4.12.0 > gedakc@quad:/dev/mapper$ > > > ***** > ***** Original listing of /dev/mapper directory after bootup. > ***** > > gedakc@quad:/dev/mapper$ ll > total 0 > drwxr-xr-x 2 root root 140 2009-02-28 09:04 ./ > drwxr-xr-x 13 root root 14520 2009-02-28 09:05 ../ > crw-rw---- 1 root root 10, 63 2009-02-28 09:04 control > brw-rw---- 1 root disk 254, 0 2009-02-28 09:04 isw_cjdcbiheed_TestRaid > brw-rw---- 1 root disk 254, 1 2009-02-28 09:04 isw_cjdcbiheed_TestRaid1 > brw-rw---- 1 root disk 254, 2 2009-02-28 09:04 isw_cjdcbiheed_TestRaid5 > brw-rw---- 1 root disk 254, 3 2009-02-28 09:04 isw_cjdcbiheed_TestRaid6 > > > ***** > ***** Delete partition number 5 using parted > ***** NOTE: The error messages are related to parted failing to inform > ***** the kernel of the partition layout change. I believe this > ***** is because /dev/mapper devices do not use a kernel ioctl call > ***** to reread the partition table > ***** > > gedakc@quad:/dev/mapper$ sudo parted /dev/mapper/isw_cjdcbiheed_TestRaid > GNU Parted 1.8.8.1.115-d53a > Using /dev/mapper/isw_cjdcbiheed_TestRaid > Welcome to GNU Parted! Type 'help' to view a list of commands. > (parted) unit s > unit s > (parted) print > print > Model: Unknown (unknown) > Disk /dev/mapper/isw_cjdcbiheed_TestRaid: 312494080s > Sector size (logical/physical): 512B/512B > Partition Table: msdos > > Number Start End Size Type File system Flags > 1 63s 224909s 224847s primary ext2 > 2 224910s 312480314s 312255405s extended > 6 15872283s 43889579s 28017297s logical reiserfs > 5 307741203s 312480314s 4739112s logical ntfs > > (parted) rm 5 > rm 5 > Error: Error informing the kernel about modifications to partition > /dev/mapper/isw_cjdcbiheed_TestRaid1 -- Invalid argument. This means Linux > won't know about any changes you made to /dev/mapper/isw_cjdcbiheed_TestRaid1 > until you reboot -- so you shouldn't mount it or use it in any way before > rebooting. > Ignore/Cancel? ignore > ignore > Error: Error informing the kernel about modifications to partition > /dev/mapper/isw_cjdcbiheed_TestRaid2 -- Invalid argument. This means Linux > won't know about any changes you made to /dev/mapper/isw_cjdcbiheed_TestRaid2 > until you reboot -- so you shouldn't mount it or use it in any way before > rebooting. > Ignore/Cancel? Ignore > Ignore > Error: Error informing the kernel about modifications to partition > /dev/mapper/isw_cjdcbiheed_TestRaid5 -- Invalid argument. This means Linux > won't know about any changes you made to /dev/mapper/isw_cjdcbiheed_TestRaid5 > until you reboot -- so you shouldn't mount it or use it in any way before > rebooting. > Ignore/Cancel? Ignore > Ignore > (parted) print > print > Model: Unknown (unknown) > Disk /dev/mapper/isw_cjdcbiheed_TestRaid: 312494080s > Sector size (logical/physical): 512B/512B > Partition Table: msdos > > Number Start End Size Type File system Flags > 1 63s 224909s 224847s primary ext2 > 2 224910s 312480314s 312255405s extended > 5 15872283s 43889579s 28017297s logical reiserfs > > (parted) quit > quit > Information: You may need to update /etc/fstab. > > > ***** > ***** List the /dev/mapper entries again. > ***** NOTE: No dmraid commands have been executed > ***** > > gedakc@quad:/dev/mapper$ ll > total 0 > drwxr-xr-x 2 root root 140 2009-02-28 09:04 ./ > drwxr-xr-x 13 root root 14520 2009-02-28 09:05 ../ > crw-rw---- 1 root root 10, 63 2009-02-28 09:04 control > brw-rw---- 1 root disk 254, 0 2009-02-28 10:28 isw_cjdcbiheed_TestRaid > brw-rw---- 1 root disk 254, 1 2009-02-28 09:04 isw_cjdcbiheed_TestRaid1 > brw-rw---- 1 root disk 254, 2 2009-02-28 09:04 isw_cjdcbiheed_TestRaid5 > brw-rw---- 1 root disk 254, 3 2009-02-28 09:04 isw_cjdcbiheed_TestRaid6 > > > ***** > ***** Try to remove the /dev/mapper entires using dmraid command > ***** > > gedakc@quad:/dev/mapper$ sudo dmraid -an > > > ***** > ***** NOTE: Two entries remain. My guess is that the > ***** isw_cjdcbiheed_TestRaid6 exists because it was in a logical > ***** partition of an MSDOS partition table. > ***** > > gedakc@quad:/dev/mapper$ ll > total 0 > drwxr-xr-x 2 root root 100 2009-02-28 10:29 ./ > drwxr-xr-x 13 root root 14520 2009-02-28 09:05 ../ > crw-rw---- 1 root root 10, 63 2009-02-28 09:04 control > brw-rw---- 1 root disk 254, 0 2009-02-28 10:28 isw_cjdcbiheed_TestRaid > brw-rw---- 1 root disk 254, 3 2009-02-28 09:04 isw_cjdcbiheed_TestRaid6 > > > ***** > ***** Try to recreate the /dev/mapper entries > ***** > > gedakc@quad:/dev/mapper$ sudo dmraid -ay > RAID set "isw_cjdcbiheed_TestRaid" already active > > > ***** > ***** Directory listing again > ***** > > gedakc@quad:/dev/mapper$ ll > total 0 > drwxr-xr-x 2 root root 140 2009-02-28 10:29 ./ > drwxr-xr-x 13 root root 14520 2009-02-28 10:29 ../ > crw-rw---- 1 root root 10, 63 2009-02-28 09:04 control > brw-rw---- 1 root disk 254, 0 2009-02-28 10:28 isw_cjdcbiheed_TestRaid > brw-rw---- 1 root disk 254, 1 2009-02-28 10:29 isw_cjdcbiheed_TestRaid1 > brw-rw---- 1 root disk 254, 2 2009-02-28 10:29 isw_cjdcbiheed_TestRaid5 > brw-rw---- 1 root disk 254, 3 2009-02-28 09:04 isw_cjdcbiheed_TestRaid6 > > > ***** > ***** NOTE: > ***** If I remove all /dev/mapper entries (excluding control of course :-), > ***** then I can use "dmraid -ay" to create the proper /dev/mapper entries. > ***** > > gedakc@quad:/dev/mapper$ sudo dmraid -an > gedakc@quad:/dev/mapper$ ll > total 0 > drwxr-xr-x 2 root root 100 2009-02-28 10:49 ./ > drwxr-xr-x 13 root root 14520 2009-02-28 10:29 ../ > crw-rw---- 1 root root 10, 63 2009-02-28 09:04 control > brw-rw---- 1 root disk 254, 0 2009-02-28 10:28 isw_cjdcbiheed_TestRaid > brw-rw---- 1 root disk 254, 3 2009-02-28 09:04 isw_cjdcbiheed_TestRaid6 > gedakc@quad:/dev/mapper$ sudo dmsetup remove /dev/mapper/isw_cjdcbiheed_TestRaid6 > gedakc@quad:/dev/mapper$ sudo dmraid -an > RAID set "isw_cjdcbiheed_TestRaid1" is not active > RAID set "isw_cjdcbiheed_TestRaid5" is not active > gedakc@quad:/dev/mapper$ ll > total 0 > drwxr-xr-x 2 root root 60 2009-02-28 10:49 ./ > drwxr-xr-x 13 root root 14520 2009-02-28 10:29 ../ > crw-rw---- 1 root root 10, 63 2009-02-28 09:04 control > gedakc@quad:/dev/mapper$ sudo dmraid -ay > gedakc@quad:/dev/mapper$ ll > total 0 > drwxr-xr-x 2 root root 120 2009-02-28 10:49 ./ > drwxr-xr-x 13 root root 14520 2009-02-28 10:49 ../ > crw-rw---- 1 root root 10, 63 2009-02-28 09:04 control > brw-rw---- 1 root disk 254, 0 2009-02-28 10:49 isw_cjdcbiheed_TestRaid > brw-rw---- 1 root disk 254, 1 2009-02-28 10:49 isw_cjdcbiheed_TestRaid1 > brw-rw---- 1 root disk 254, 2 2009-02-28 10:49 isw_cjdcbiheed_TestRaid5 > gedakc@quad:/dev/mapper$ > > _______________________________________________ > Ataraid-list mailing list > Ataraid-list@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/ataraid-list _______________________________________________ Ataraid-list mailing list Ataraid-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ataraid-list
