10 More Discussions You Might Find Interesting
1. AIX
Hi all,
How to view more info about this error message that i am keep on getting.
Tried "errpt -a" but the output is huge.
Thanks in advance! (2 Replies)
Discussion started by: lramsb4u
2 Replies
2. AIX
May I know how can I add a new SSA pdisk into array and become usable hdisk? I have inserted a 36GB SSA disk into enclosure and done the "cfgmgr" and I can see it already been regconized as pdisk47.
I would like to make it a system disk in order for me to add to my volume group. Please let me... (3 Replies)
Discussion started by: kwliew999
3 Replies
3. AIX
Hi Experts,
I have configured A D40 Array. There is an faulty disk which is not part of an raid volume but shows fault in the diagnostics.
pdisk15 U0.1-P1-I1/Q1-W40AA83CC2400D
SSA160 Physical Disk Drive ( MB)
Is there a way to stop this... (2 Replies)
Discussion started by: vuppala360
2 Replies
4. AIX
Hi All,
What's the proper procedure for removing SSA arrays? Is the procedure like these?
- rmdev ssa disk
- physical turn off the ssa
- cfgmgr
There's no more filesystem or logical volume on it. It's just pdisk and hdisk.
Thanks in advance,
itik (3 Replies)
Discussion started by: itik
3 Replies
5. AIX
Hi guys,
I'd like to share my migration/mirroring of ssa to san. No downtime for users, probably I/O performance.
here's the step:
1 After the lun had been carved on the SAN and the connections had been done on AIX fiber card
2 “lspv” and look for the new SAN hdisk? on the bottom, say... (1 Reply)
Discussion started by: itik
1 Replies
6. AIX
Hi,
Do you have procedures to migrate ssa disks to san disk?
I don't have testing environment and I want my file system be migrated one at a time. I want it to be fast, I have only 15-20 hours to do it on every sunday 1PM till monday 7am. My largest file system is about 150G.
The AIX is... (0 Replies)
Discussion started by: itik
0 Replies
7. AIX
hi all,
i have an p620 server. it has 2 scsi 18gb disks for aix4.3 OS and 3 ssa disks for database and an serialRAID adapter. 3 ssa disks configured raid level 5.
to increase capacity of the datavg, i buy 2 ssa 18gb disks. but i can not add them to the existing datavg. i did the following... (1 Reply)
Discussion started by: tinhlx
1 Replies
8. AIX
I am in the process of updating ssa adapters, drives and enclosures and wanted to know if there are any caveats that anyone would like to share. The documentation is not very clear on the ordering of the updates.
Any tips would be appreciated. (1 Reply)
Discussion started by: chosie
1 Replies
9. AIX
Helo:
We updated form AIX 4.3.3 to AIX 5.1-7 and after this we spent more than double time in read from external disks. Aparently the ssa cards microcode is at last level and all the ptf and apars are instaled.
Out backups expent more than double time, but curiously in read only, if we write in... (0 Replies)
Discussion started by: Javier Gutierre
0 Replies
10. AIX
Hi
Can I add disks on the fly to extend the capacity of an existing RAID 5 volume?
It's created on a 4P Advanced SSA Raid Adapter.
I need to extend a volume group, so I figured it would be easiest to extend the "physical disk" which is a RAID5 volume.
Thanks. (1 Reply)
Discussion started by: osee
1 Replies
SD(4) Linux Programmer's Manual SD(4)
NAME
sd - Driver for SCSI Disk Drives
SYNOPSIS
#include <linux/hdreg.h> /* for HDIO_GETGEO */ #include <linux/fs.h> /* for BLKGETSIZE and BLKRRPART */
CONFIG
The block device name has the following form: sdlp, where l is a letter denoting the physical drive, and p is a number denoting the parti-
tion on that physical drive. Often, the partition number, p, will be left off when the device corresponds to the whole drive.
SCSI disks have a major device number of 8, and a minor device number of the form (16 * drive_number) + partition_number, where drive_num-
ber is the number of the physical drive in order of detection, and partition_number is as follows:
partition 0 is the whole drive
partitions 1-4 are the DOS "primary" partitions
partitions 5-8 are the DOS "extended" (or "logical") partitions
For example, /dev/sda will have major 8, minor 0, and will refer to all of the first SCSI drive in the system; and /dev/sdb3 will have
major 8, minor 19, and will refer to the third DOS "primary" partition on the second SCSI drive in the system.
At this time, only block devices are provided. Raw devices have not yet been implemented.
DESCRIPTION
The following ioctls are provided:
HDIO_GETGEO
Returns the BIOS disk parameters in the following structure:
struct hd_geometry {
unsigned char heads;
unsigned char sectors;
unsigned short cylinders;
unsigned long start;
};
A pointer to this structure is passed as the ioctl(2) parameter.
The information returned in the parameter is the disk geometry of the drive as understood by DOS! This geometry is not the physical
geometry of the drive. It is used when constructing the drive's partition table, however, and is needed for convenient operation of
fdisk(1), efdisk(1), and lilo(1). If the geometry information is not available, zero will be returned for all of the parameters.
BLKGETSIZE
Returns the device size in sectors. The ioctl(2) parameter should be a pointer to a long.
BLKRRPART
Forces a re-read of the SCSI disk partition tables. No parameter is needed.
The scsi(4) ioctls are also supported. If the ioctl(2) parameter is required, and it is NULL, then ioctl() will return -EINVAL.
FILES
/dev/sd[a-h]: the whole device
/dev/sd[a-h][0-8]: individual block partitions
SEE ALSO
scsi(4)
1992-12-17 SD(4)
