01-17-2012
Help: Disable write cache for battery replacement
Hello Everyone,
I have a AIX 5.2 and saw the following entry in the error report in one of my servers.
IDENTIFIER TIMESTAMP T C RESOURCE_NAME DESCRIPTION
FFDFB692 0705111911 P H sisraid0 BATTERY PACK FAILURE
Now, we're ready to replace the battery pack but I heard I need to disable the write cache first before doing any replacements. I have no idea on how to do it or check if the write cache is enabled.
Could someone please help?
9 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
hi,
What is the difference between UBC cache and Metadata cache ? where can i find UBC cache Hits and Metadata cache Hits in hp-ux?
Advanced thanx for the help. (2 Replies)
Discussion started by: sushaga
2 Replies
2. AIX
Hi All,
I would like to share this incident that happened the other day.
I have a question with this, https://www.unix.com/aix/64921-create-new-vg-san-rename-fs.html
And I thought it's related to the above link but the problem was the ibm san 4300 cache battery was dead and I need to click... (2 Replies)
Discussion started by: itik
2 Replies
3. Linux
Im running Ubuntu 9.04 and the battery indicator on my laptop always reads 0% no matter what. Whether im charging or discharging, the pop up says:
"Computer is running on battery power
Laptop battery discharging (0.0%)
Battery discharge time is currently unknown"
When plugged in it says... (2 Replies)
Discussion started by: Charbs
2 Replies
4. Shell Programming and Scripting
Hi All,
I have bash script, so what is sintax script in bash for Enable and Disable Tab Key. Thanks for your help.:(
Thanks,
Rico (1 Reply)
Discussion started by: carnegiex
1 Replies
5. Linux
Hi all
I saw in Microsoft web site www.SysInternals.com a tool called CoreInfo from able to print out on screen the size of the Data and Instruction caches of your processor, the Locigal to Physical Processor mapping, the number of the CPU sockets. etc..
Do you know if in Linux is available a... (2 Replies)
Discussion started by: manustone
2 Replies
6. IP Networking
Hi,
We have smb client running on two of the linux boxes and smb server on another linux system. During a backup operation which uses smb, read of a file was allowed while write to the same file was going on.Also simultaneous writes to the same file were allowed.Following are the settings in the... (1 Reply)
Discussion started by: swatidas11
1 Replies
7. AIX
Hello,
I have IBM SAN STORAGE DS4100 and one of the cache battery for the controller is dead. Suddenly the performance has been degraded and access to SAN disks ( reading and writing ) became very slow ?
My query: Replacing the battery will take 6 days, so in the mean time what are the ways... (1 Reply)
Discussion started by: filosophizer
1 Replies
8. Linux
Hi All,
could any one point out any open source test-suites for "File cache" testing and as well as performance test suites for the same. Currently my system is up with Linux/ext4.
Regards
Manish (0 Replies)
Discussion started by: hmanish
0 Replies
9. Red Hat
Hi all Expertise,
I have following issue to solve,
SSL / TLS Renegotiation DoS (low) 222.225.12.13
Ease of Exploitation Moderate
Port 443/tcp
Family Miscellaneous
Following is the problem description:------------------
Description The remote service encrypts traffic using TLS / SSL and... (2 Replies)
Discussion started by: manalisharmabe
2 Replies
LEARN ABOUT NETBSD
inittodr
INITTODR(9) BSD Kernel Developer's Manual INITTODR(9)
NAME
inittodr -- initialize system time
SYNOPSIS
void
inittodr(time_t base);
DESCRIPTION
The inittodr() function determines the time and sets the system clock. It tries to pick the correct time using a set of heuristics that
examine the system's battery-backed clock and the time reported by the file system, as given in base. Those heuristics include:
o If the battery-backed clock has a valid time, and is not significantly behind the time provided by base, it is used.
o If the battery-backed clock does not have a valid time, or is significantly behind the time provided in base, and the time provided in
base is within reason, base is used as the current time.
o If the battery-backed clock appears invalid, and base appears non-sensical or was not provided (was given as zero), an arbitrary base
(typically some time within the same year that the kernel was last updated) will be used.
Once a system time has been determined, it is stored in the time variable.
DIAGNOSTICS
The inittodr() function prints diagnostic messages if it has trouble figuring out the system time. Conditions that can cause diagnostic mes-
sages to be printed include:
o There is no battery-backed clock present on the system.
o The battery-backed clock's time appears nonsensical.
o The base time appears nonsensical.
o The base time and the battery-backed clock's time differ by a large amount.
SEE ALSO
clock_ymdhms_to_secs(9), resettodr(9), time_second(9)
BUGS
Some systems use heuristics for picking the correct time that are slightly different.
BSD
September 6, 2006 BSD