fdisk on /dev/mapper/mpath device shows 'WARNING: Re-reading the partition table failed with error 22: Invalid argument.' message
Issue
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We are trying to create partition on multipath device with fdisk utility, but it shows
22: Invalid argument
error message as marked in following snip:# fdisk /dev/mapper/mpatha Partition number (1-4): 1 First cylinder (1-19074, default 1): Using default value 1 Last cylinder or +size or +sizeM or +sizeK (1-19074, default 19074): Using default value 19074 Command (m for help): p Disk /dev/mapper/mpatha: 156.8 GB, 156892397568 bytes 255 heads, 63 sectors/track, 19074 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/mapper/mpathap1 1 19074 153211873+ 83 Linux Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. WARNING: Re-reading the partition table failed with error 22: Invalid argument. <------ The kernel still uses the old table. The new table will be used at the next reboot. Syncing disks.
Environment
- Red Hat Enterprise Linux (RHEL) 4, 5, 6
- device-mapper-multipath
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