> -----Original Message----- > From: dm-devel-bounces@xxxxxxxxxx > [mailto:dm-devel-bounces@xxxxxxxxxx] On Behalf Of Aaron Bergstralh > Sent: Wednesday, October 24, 2007 5:50 PM > > I have used the following in the past when I needed to resize > online. I have only tested this for the round robin selector > but a similar method could also work for other selectors. > > #Started with the following dm table > dmsetup table m500i_A_lun_4 > 0 157287936 multipath 0 0 1 1 round-robin 0 2 1 8:80 100 8:160 100 > > ###Used the following in a script to complete the resize > dmsetup suspend m500i_A_lun_4 > > #Reload with one device removed and old size dmsetup load > m500i_A_lun_4 <<EOF 0 157287936 multipath 0 0 1 1 round-robin > 0 1 1 8:80 100 EOF dmsetup resume m500i_A_lun_4 dmsetup > suspend m500i_A_lun_4 > > #Reload with one device removed for all other devices dmsetup > load m500i_A_lun_4 <<EOF 0 157287936 multipath 0 0 1 1 > round-robin 0 1 1 8:160 100 EOF dmsetup resume m500i_A_lun_4 > dmsetup suspend m500i_A_lun_4 > > #Reload with all devices and new size > dmsetup load m500i_A_lun_4 <<EOF > 0 209717248 multipath 0 0 1 1 round-robin 0 2 1 8:80 100 > 8:160 100 EOF dmsetup resume m500i_A_lun_4 > > After the last step everything is able to see the new device > size. I know this isn't an ideal solution but it might be > useful for some people. I have an EMC Clariion with four paths (two active and two passive): # multipath -ll 360060160eb2417004412f146416bdc11 [size=20 GB][features="0"][hwhandler="1 emc"] \_ round-robin 0 [prio=2][active] \_ 0:0:2:200 sdb 8:16 [active][ready] \_ 1:0:4:200 sdk 8:160 [active][ready] \_ round-robin 0 [enabled] \_ 0:0:3:200 sde 8:64 [active][ready] \_ 1:0:3:200 sdh 8:112 [active][ready] # dmsetup table 360060160eb2417004412f146416bdc11 0 41943040 multipath 0 1 emc 2 1 round-robin 0 2 1 8:16 100 8:160 100 round-robin 0 2 1 8:64 100 8:112 100 What are the exact order of remove/reload in this case? I'd like to understand the logic! Thanks again -- DV -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
