Can someone tell me what this means please? I just received this in
an email from one of my servers:
From: mdadm monitoring [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: FailSpare event on /dev/md2:$HOST.$DOMAIN.com
This is an automatically generated mail message from mdadm
running on
On Thursday January 11, [EMAIL PROTECTED] wrote:
Can someone tell me what this means please? I just received this in
an email from one of my servers:
A FailSpare event had been detected on md device /dev/md2.
It could be related to component device /dev/sde2.
It means that mdadm
On Fri, 12 Jan 2007, Neil Brown might have said:
On Thursday January 11, [EMAIL PROTECTED] wrote:
Can someone tell me what this means please? I just received this in
an email from one of my servers:
A FailSpare event had been detected on md device /dev/md2.
It could be
I'm having a discussion with a coworker concerning the cost of md's
raid5 implementation versus hardware raid5 implementations.
Specifically, he states:
The performance [of raid5 in hardware] is so much better with the
write-back caching on the card and the offload of the parity, it
seems to
On Thursday January 11, [EMAIL PROTECTED] wrote:
So I'm ok for the moment? Yes, I need to find the error and fix everything
back to the (S) state.
Yes, OK for the moment.
The messages in $HOST:/var/log/messages for the time of the email are:
Jan 11 16:04:25 elo kernel: sd 2:0:4:0: SCSI
With 4 Raptor 150s XFS (default XFS options):
# Stripe tests:
echo 8192 /sys/block/md3/md/stripe_cache_size
# DD TESTS [WRITE]
DEFAULT:
$ dd if=/dev/zero of=10gb.no.optimizations.out bs=1M count=10240
10240+0 records in
10240+0 records out
10737418240 bytes (11 GB) copied, 96.6988 seconds,
RAID5 with 128kb chunk size.
Raid0 was 317MB/s write and 279MB/s read.
# xfs_growfs -n /dev/md3
meta-data=/dev/md3 isize=256agcount=16, agsize=6868160
blks
= sectsz=4096 attr=0
data = bsize=4096 blocks=109890528,
google BadBlockHowto
Any just google it response sounds glib, but this is actually how to
do it :-)
If you're new to md and mdadm, don't forget to actually remove the drive
from the array before you start working on it with 'dd'
-Mike
Mike wrote:
On Fri, 12 Jan 2007, Neil Brown might have
2007/1/12, Mike [EMAIL PROTECTED]:
# 1 Background long Completed, segment failed -3943
This should still be in warranty. Try to get a replacement.
Best
Martin
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Using 4 raptor 150s:
Without the tweaks, I get 111MB/s write and 87MB/s read.
With the tweaks, 195MB/s write and 211MB/s read.
Using kernel 2.6.19.1.
Without the tweaks and with the tweaks:
# Stripe tests:
echo 8192 /sys/block/md3/md/stripe_cache_size
# DD TESTS [WRITE]
DEFAULT: (512K)
$ dd
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