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CoAdCentOS

CoAdCentOS

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  • Member Since: 29 Jun 10
  • Last Logged In: 04 Oct 10

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  • CoAdCentOS
    RE: Adjusting/Rescanning iScsi drive size
    I resolved this issue. Apparently, the alias I created for the iScsi drive was wrong in the /etc/fstab, so it was the wrong mount.
    Link to this post 05 Oct 10

    I resolved this issue. Apparently, the alias I created for the iScsi drive was wrong in the /etc/fstab, so it was the wrong mount.

  • CoAdCentOS
    Adjusting/Rescanning iScsi drive size
    I've been having trouble getting my server to automatically adjust the size of a iScsi drive is mounted: # The size reflected is 39G, but it should be 30G [ffallateuf@ps-dev-nfs ~]$ df -kh | grep ps-dev-nfs ps-dev-nfs:/mnt/filestore 39G 2.8G 34G 8% /mnt/filestore # I unmount the drive [root@ps-dev-nfs ~]# umount -l /mnt/filestore [root@ps-dev-nfs ~]# # I rescanned both interfaces [root@ps-dev-nfs ~]# iscsiadm -m node -R -I iface0 Rescanning session [sid: 1, target: iqn.2001-05.com.equallogic:0-8a0906-943101403-07fc56251a64c44a-ps-dev-nfs2, portal: 10.3.2.10,3260] Rescanning session [sid: 3, target: iqn.2001-05.com.equallogic:0-8a0906-db7938c02-c6a994bda8a4a773-ps-dev-nfs, portal: 10.3.2.10,3260] [root@ps-dev-nfs ~]# iscsiadm -m node -R -I iface1 Rescanning session [sid: 2, target: iqn.2001-05.com.equallogic:0-8a0906-943101403-07fc56251a64c44a-ps-dev-nfs2, portal: 10.3.2.10,3260] Rescanning session [sid: 4, target: iqn.2001-05.com.equallogic:0-8a0906-db7938c02-c6a994bda8a4a773-ps-dev-nfs, portal: 10.3.2.10,3260] # Then I rescan it through fsck & attempt to resize it with no success [root@ps-dev-nfs ~]# e2fsck -f /dev/dm-0 e2fsck 1.39 (29-May-2006) Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information dev_filestore: 144798/3932160 files (7.3% non-contiguous), 3798724/7864320 blocks [root@ps-dev-nfs ~]# resize2fs -f /dev/dm-0 resize2fs 1.39 (29-May-2006) The filesystem is already 7864320 blocks long. Nothing to do! # Yet if I run fdisk, the correct size shows up [root@ps-dev-nfs ~]# fdisk -l Disk /dev/sda: 64.3 GB, 64347963392 bytes 255 heads, 63 sectors/track, 7823 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 5151 41375376 83 Linux /dev/sda2 7195 7703 4088542+ 82 Linux swap / Solaris Disk /dev/sdb: 32.2 GB, 32212254720 bytes 64 heads, 32 sectors/track, 30720 cylinders Units = cylinders of 2048 * 512 = 1048576 bytes Disk /dev/sdb doesn't contain a valid partition table Disk /dev/sdc: 53.6 GB, 53697576960 bytes 64 heads, 32 sectors/track, 51210 cylinders Units = cylinders of 2048 * 512 = 1048576 bytes Disk /dev/sdc doesn't contain a valid partition table Disk /dev/sdd: 53.6 GB, 53697576960 bytes 64 heads, 32 sectors/track, 51210 cylinders Units = cylinders of 2048 * 512 = 1048576 bytes Disk /dev/sdd doesn't contain a valid partition table Disk /dev/sde: 32.2 GB, 32212254720 bytes 64 heads, 32 sectors/track, 30720 cylinders Units = cylinders of 2048 * 512 = 1048576 bytes Disk /dev/sde doesn't contain a valid partition table Disk /dev/dm-0: 32.2 GB, 32212254720 bytes 255 heads, 63 sectors/track, 3916 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk /dev/dm-0 doesn't contain a valid partition table Disk /dev/dm-1: 53.6 GB, 53697576960 bytes 255 heads, 63 sectors/track, 6528 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk /dev/dm-1 doesn't contain a valid partition table So apparently, when I run "fdisk", I see the correct size. But when I do "df -k", the size is wrong. Why are both different and what can I do to adjust this? Thank you, Franck
    Link to this post 30 Sep 10

    I've been having trouble getting my server to automatically adjust the size of a iScsi drive is mounted:

    # The size reflected is 39G, but it should be 30G

    [ffallateuf@ps-dev-nfs ~]$ df -kh | grep ps-dev-nfs
    ps-dev-nfs:/mnt/filestore
    39G 2.8G 34G 8% /mnt/filestore

    # I unmount the drive

    [root@ps-dev-nfs ~]# umount -l /mnt/filestore
    [root@ps-dev-nfs ~]#

    # I rescanned both interfaces

    [root@ps-dev-nfs ~]# iscsiadm -m node -R -I iface0
    Rescanning session [sid: 1, target: iqn.2001-05.com.equallogic:0-8a0906-943101403-07fc56251a64c44a-ps-dev-nfs2, portal: 10.3.2.10,3260]
    Rescanning session [sid: 3, target: iqn.2001-05.com.equallogic:0-8a0906-db7938c02-c6a994bda8a4a773-ps-dev-nfs, portal: 10.3.2.10,3260]
    [root@ps-dev-nfs ~]# iscsiadm -m node -R -I iface1
    Rescanning session [sid: 2, target: iqn.2001-05.com.equallogic:0-8a0906-943101403-07fc56251a64c44a-ps-dev-nfs2, portal: 10.3.2.10,3260]
    Rescanning session [sid: 4, target: iqn.2001-05.com.equallogic:0-8a0906-db7938c02-c6a994bda8a4a773-ps-dev-nfs, portal: 10.3.2.10,3260]

    # Then I rescan it through fsck & attempt to resize it with no success

    [root@ps-dev-nfs ~]# e2fsck -f /dev/dm-0
    e2fsck 1.39 (29-May-2006)
    Pass 1: Checking inodes, blocks, and sizes
    Pass 2: Checking directory structure
    Pass 3: Checking directory connectivity
    Pass 4: Checking reference counts
    Pass 5: Checking group summary information
    dev_filestore: 144798/3932160 files (7.3% non-contiguous), 3798724/7864320 blocks
    [root@ps-dev-nfs ~]# resize2fs -f /dev/dm-0
    resize2fs 1.39 (29-May-2006)
    The filesystem is already 7864320 blocks long. Nothing to do!


    # Yet if I run fdisk, the correct size shows up

    [root@ps-dev-nfs ~]# fdisk -l

    Disk /dev/sda: 64.3 GB, 64347963392 bytes
    255 heads, 63 sectors/track, 7823 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes

    Device Boot Start End Blocks Id System
    /dev/sda1 * 1 5151 41375376 83 Linux
    /dev/sda2 7195 7703 4088542+ 82 Linux swap / Solaris

    Disk /dev/sdb: 32.2 GB, 32212254720 bytes
    64 heads, 32 sectors/track, 30720 cylinders
    Units = cylinders of 2048 * 512 = 1048576 bytes

    Disk /dev/sdb doesn't contain a valid partition table

    Disk /dev/sdc: 53.6 GB, 53697576960 bytes
    64 heads, 32 sectors/track, 51210 cylinders
    Units = cylinders of 2048 * 512 = 1048576 bytes

    Disk /dev/sdc doesn't contain a valid partition table

    Disk /dev/sdd: 53.6 GB, 53697576960 bytes
    64 heads, 32 sectors/track, 51210 cylinders
    Units = cylinders of 2048 * 512 = 1048576 bytes

    Disk /dev/sdd doesn't contain a valid partition table

    Disk /dev/sde: 32.2 GB, 32212254720 bytes
    64 heads, 32 sectors/track, 30720 cylinders
    Units = cylinders of 2048 * 512 = 1048576 bytes

    Disk /dev/sde doesn't contain a valid partition table

    Disk /dev/dm-0: 32.2 GB, 32212254720 bytes
    255 heads, 63 sectors/track, 3916 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes

    Disk /dev/dm-0 doesn't contain a valid partition table

    Disk /dev/dm-1: 53.6 GB, 53697576960 bytes
    255 heads, 63 sectors/track, 6528 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes

    Disk /dev/dm-1 doesn't contain a valid partition table

    So apparently, when I run "fdisk", I see the correct size. But when I do "df -k", the size is wrong.

    Why are both different and what can I do to adjust this?

    Thank you,
    Franck

  • CoAdCentOS
    Resizing an iSCSI Device
    I'm trying to increase the size of an iSCSI device. On the LUN side, the provision size has been expanded already. I expanded the size of this device from 15GB to 30GB. I then rescanned the devices: [root@ps-dev-nfs ~]# iscsiadm -m node --targetname iqn.2001-05.com.equallogic:0-8a0906-db7938c02-c6a994bda8a4a773-ps-dev-nfs -R Rescanning session [sid: 1, target: iqn.2001-05.com.equallogic:0-8a0906-db7938c02-c6a994bda8a4a773-ps-dev-nfs, portal: 10.3.2.10,3260] Rescanning session [sid: 2, target: iqn.2001-05.com.equallogic:0-8a0906-db7938c02-c6a994bda8a4a773-ps-dev-nfs, portal: 10.3.2.10,3260] If I check the size of the devices (/dev/sdb, /dev/sdc and /dev/dm-0), I see them reflecting the new size: [root@ps-dev-nfs ~]# fdisk -l Disk /dev/sda: 64.3 GB, 64347963392 bytes 255 heads, 63 sectors/track, 7823 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 5151 41375376 83 Linux /dev/sda2 7195 7703 4088542+ 82 Linux swap / Solaris Disk /dev/sdb: 32.2 GB, 32212254720 bytes 64 heads, 32 sectors/track, 30720 cylinders Units = cylinders of 2048 * 512 = 1048576 bytes Disk /dev/sdb doesn't contain a valid partition table Disk /dev/sdc: 32.2 GB, 32212254720 bytes 64 heads, 32 sectors/track, 30720 cylinders Units = cylinders of 2048 * 512 = 1048576 bytes Disk /dev/sdc doesn't contain a valid partition table Disk /dev/dm-0: 32.2 GB, 32212254720 bytes 255 heads, 63 sectors/track, 3916 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk /dev/dm-0 doesn't contain a valid partition table Another check confirms this: [root@ps-dev-nfs ~]# blockdev --getsize64 /dev/dm-0 32212254720 [root@ps-dev-nfs ~]# multipath -ll dev_nfs_fs (36090a028c03879db73a7a4a8bd94a9c6) dm-0 EQLOGIC,100E-00 [size=30G][features=1 queue_if_no_path][hwhandler=0][rw] \_ round-robin 0 [prio=2][active] \_ 1:0:0:0 sdb 8:16 [active][ready] \_ 2:0:0:0 sdc 8:32 [active][ready] However, when I check disk space usage I still see that device at 15GB: [root@ps-dev-nfs ~]# df -kh Filesystem Size Used Avail Use% Mounted on /dev/sda1 39G 2.6G 34G 8% / tmpfs 250M 0 250M 0% /dev/shm ps-home-nfs.plansource.com:/home 50G 41G 6.6G 86% /home /dev/mapper/dev_nfs_fs 15G 15G 0 100% /mnt/filestore What step am I missing here? Can someone please help me ?
    Link to this post 20 Jul 10

    I'm trying to increase the size of an iSCSI device. On the LUN side, the provision size has been expanded already.
    I expanded the size of this device from 15GB to 30GB.


    I then rescanned the devices:

    [root@ps-dev-nfs ~]# iscsiadm -m node --targetname iqn.2001-05.com.equallogic:0-8a0906-db7938c02-c6a994bda8a4a773-ps-dev-nfs -R
    Rescanning session [sid: 1, target: iqn.2001-05.com.equallogic:0-8a0906-db7938c02-c6a994bda8a4a773-ps-dev-nfs, portal: 10.3.2.10,3260]
    Rescanning session [sid: 2, target: iqn.2001-05.com.equallogic:0-8a0906-db7938c02-c6a994bda8a4a773-ps-dev-nfs, portal: 10.3.2.10,3260]

    If I check the size of the devices (/dev/sdb, /dev/sdc and /dev/dm-0), I see them reflecting the new size:

    [root@ps-dev-nfs ~]# fdisk -l

    Disk /dev/sda: 64.3 GB, 64347963392 bytes
    255 heads, 63 sectors/track, 7823 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes

    Device Boot Start End Blocks Id System
    /dev/sda1 * 1 5151 41375376 83 Linux
    /dev/sda2 7195 7703 4088542+ 82 Linux swap / Solaris

    Disk /dev/sdb: 32.2 GB, 32212254720 bytes
    64 heads, 32 sectors/track, 30720 cylinders
    Units = cylinders of 2048 * 512 = 1048576 bytes

    Disk /dev/sdb doesn't contain a valid partition table

    Disk /dev/sdc: 32.2 GB, 32212254720 bytes
    64 heads, 32 sectors/track, 30720 cylinders
    Units = cylinders of 2048 * 512 = 1048576 bytes

    Disk /dev/sdc doesn't contain a valid partition table

    Disk /dev/dm-0: 32.2 GB, 32212254720 bytes
    255 heads, 63 sectors/track, 3916 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes

    Disk /dev/dm-0 doesn't contain a valid partition table

    Another check confirms this:
    [root@ps-dev-nfs ~]# blockdev --getsize64 /dev/dm-0
    32212254720

    [root@ps-dev-nfs ~]# multipath -ll
    dev_nfs_fs (36090a028c03879db73a7a4a8bd94a9c6) dm-0 EQLOGIC,100E-00
    [features=1 queue_if_no_path][hwhandler=0][rw] \_ round-robin 0 [prio=2][active] \_ 1:0:0:0 sdb 8:16 [active][ready] \_ 2:0:0:0 sdc 8:32 [active][ready]

    However, when I check disk space usage I still see that device at 15GB:

    [root@ps-dev-nfs ~]# df -kh Filesystem Size Used Avail Use% Mounted on /dev/sda1 39G 2.6G 34G 8% / tmpfs 250M 0 250M 0% /dev/shm ps-home-nfs.plansource.com:/home 50G 41G 6.6G 86% /home /dev/mapper/dev_nfs_fs 15G 15G 0 100% /mnt/filestore

    What step am I missing here?

    Can someone please help me ?

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