| Title: | RAID Software for OpenVMS |
| Notice: | READ IMPORTANT NOTE IN 3.15, V2.4 SSB Kit in 3.17 6 |
| Moderator: | COOKIE::FROEHLIN |
| Created: | Fri Dec 03 1993 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 341 |
| Total number of notes: | 1378 |
I have a customer who asked me where the disklabels within a host-based
RAID set came from. Well, I told him that the raid init command
assigned the labels. Ok, he said, why do I have some that look like
this?
raid show dss1
StorageWorks(TM) RAID Software V2.0 Display Time: 8-MAY-1997
10:13:08.45
Copyright Digital Equipment Corporation 1993, 1994. All Rights
Reserved.
RAID Array Parameters:
Current RAID Array ID: DSS1
Permanent RAID Array ID: DSS1
RAID Level: 0+1
Current State: NORMAL
RAID Array Configuration:
Member ShadowSet ShadowSet
Index Name State Members State
----- ------ ----- --------- ---------
0 _DSA1025: NORMAL 1 SteadyState
1 _DSA1225: NORMAL 1 SteadyState
2 _DSA1265: NORMAL 1 SteadyState
3 _DSA1485: NORMAL 1 SteadyState
Virtual
Unit Size Status Reads Writes Errors
------- ------ -------- ----- ------ ------
DPA0050: 16415992 ACCESS 13278 96390 0
show dev d /out=disk.rpt
sea disk.rpt dss1
DSA1025: Mounted 0 DSS1T0000000 32 2 1
DSA1225: Mounted 0 DSS1T0000001 32 2 1
DSA1265: Mounted 0 DSS1T0000002 32 2 1
DSA1485: Mounted 0 DSS1T0000003 32 2 1
DPA50: (DNA201) Mounted 0 DSS1 6271024 216 1
^^^^^^^^^^
Where did the T come from? Most, but not all, of his RAID sets have the
T. None of his raid set names contain the T.
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 335.1 | COOKIE::FROEHLIN | VMS...riding into the setting sun! | Thu May 08 1997 17:29 | 25 | |
> Where did the T come from? Most, but not all, of his RAID sets have the
Yah, where?
From V2.0 source:
----------------------------------------------------------------------------
#define MEMBER_INDEX_POS 10 /* position of member index in volume label */
#define MEMBER_INDEX_LEN 2 /* length of member index field */
volume_label[MEMBER_INDEX_POS + MEMBER_INDEX_LEN] = '\0'; /* null */
strncpy (volume_label, raidset, MEMBER_INDEX_POS);
for (i = strlen(raidset); i < MEMBER_INDEX_POS; i++)
volume_label[i] = '0';
return;
----------------------------------------------------------------------------
I ran a quick test on VAX V6.2 with RAID 2.0 and the volume labels of
the array named DSS1 came out like DSS1000000nn as expected. Now you
can always use "SET VOLUME" to change the labels of the array members
and you can also change the name of the array later on with "RAID
MODIFY".
Baseline: I have no clue, sorry.
Guenther
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| 335.2 | field test ? | CSC32::I_WALDO | Thu May 08 1997 18:44 | 5 | |
Thanks for your reply.
The RAID was set up before the current system management arrived.
Could it have been some field test version?
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| 335.3 | COOKIE::FROEHLIN | VMS...riding into the setting sun! | Thu May 08 1997 19:37 | 8 | |
> Could it have been some field test version?
Straws, straws, straws... ;-)
The function to create a volume label hasn't been changed since V1.0.
You said that the customer has this effect on more than one array?
Guenther
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| 335.4 | CSC32::I_WALDO | Mon May 12 1997 17:01 | 7 | ||
Thanks for the info.
The system manager who set these raid sets up is long gone. The
current system manager was curious why/how the "T" got there.
Told him that the "T" was not something special from the raid
implimentaton.
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