Shulou(Shulou.com)06/02 Report--

After SAN storage is partitioned into servers, the servers need to format it before it can mount the storage.

--Multipath disks with the same wwid

[root@sdb etc]# fdisk -l |grep dev|grep -v sda

Disk /dev/sdb: 1099.5 GB, 1099529453568 bytes

Disk /dev/sdc: 1099.5 GB, 1099529453568 bytes

Disk /dev/sdd: 1099.5 GB, 1099529453568 bytes

Disk /dev/mapper/3600a09803830464d6c5d4c6c47664356: 1099.5 GB, 1099529453568 bytes

[root@sdb etc]# multipath -l

3600a09803830464d6c5d4c6c47664356 dm-0 NETAPP,LUN C-Mode

size=1.0T features='3 queue_if_no_path pg_init_retries 50' hwhandler='0' wp=rw

|-+- policy='round-robin 0' prio=0 status=active

| |- 1:0:0:0 sdb 8:16 active undef running

| `- 2:0:0:0 sdd 8:48 active undef running

`-+- policy='round-robin 0' prio=0 status=enabled

`- 1:0:1:0 sdc 8:32 active undef running

[root@sdb etc]# scsi_id -g -u /dev/sdb

3600a09803830464d6c5d4c6c47664356

[root@srmdb etc]# scsi_id -g -u /dev/mapper/3600a09803830464d6c5d4c6c47664356

3600a09803830464d6c5d4c6c47664356

--Direct mount error, prompt needs formatting

[root@sdb etc]# mount /dev/mapper/3600a09803830464d6c5d4c6c47664356 /u02

mount: you must specify the filesystem type

--Prompt to partition/dev/sdb disk operation

[root@sdb etc]# mkfs -t ext4 /dev/sdb

mke2fs 1.41.12 (17-May-2010)

/dev/sdb is entire device, not just one partition!

Proceed anyway? (y,n) n

--Partitioning is not required for/dev/mapper/wwid alias operations

[root@sdb etc]# mkfs -t ext4 /dev/mapper/3600a09803830464d6c5d4c6c47664356

mke2fs 1.41.12 (17-May-2010)

Filesystem label=

OS type: Linux

Block size=4096 (log=2)

Fragment size=4096 (log=2)

Stride=1 blocks, Stripe width=16 blocks

67117056 inodes, 268439808 blocks

13421990 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=4294967296

8193 block groups

32768 blocks per group, 32768 fragments per group

8192 inodes per group

Superblock backups stored on blocks:

32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,

4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,

102400000, 214990848

Writing inode tables: done

Creating journal (32768 blocks): done

Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 33 mounts or

180 days, whichever comes first. Use tune2fs -c or -i to override.

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