Unanswered Questions

13
votes
0answers
4k views

“Unable to open the Server service performance object.”

I have a group of servers which all show these symptoms. Every 2-7 days twice in a row, the following error shows up in the Application event log: Unable to open the Server service performance ...
11
votes
1answer
2k views

Is there any way to fix a corrupted LDM database?

TL;DR: Are there any tools/approaches to diagnosing and fixing LDM (Logical Disk Manager) metadata structures without recreating from scratch? Full description: I have two SSD drives ...
9
votes
1answer
210 views

Receiver limits TCP window size to 64,512

Facts (please identify any false statements): I have a 100 Mbps connection between two sites that are 80 ms apart This is a long fat connection that could benefit from a large TCP window size ...
9
votes
0answers
143 views

Why higher await time for DM multipath device than underlying device?

We have a CentOS 6.4 based server attached to Hitachi HNAS 3080 storage and observed the kernel remount the filesystem in read-only mode: May 16 07:31:03 GNS3-SRV-CMP-001 kernel: [1259725.675814] ...
9
votes
0answers
114 views

SynProxy can not return syn ack packets with asymmetric dual bridge topology

I have a asymmetric dual bridge topology as shown below when i connect from 172.16.11.5 and 172.16.10.6 with ssh but i can not connect because of SynProxy. ------- ...
9
votes
1answer
125 views

How does server-side `TIME_WAIT` really work?

I know there are quite a few SE questions on this, and I believe I read as many of them as it matters before coming to this point. By "server-side TIME_WAIT" I mean the state of a server-side socket ...
9
votes
1answer
494 views

“The zone can be scavenged after” keeps incrementing

What are you trying to do? I'm trying to enable DNS scavenging on a DNS zone that has about a hundred stale DNS records. What have you tried in order to make it happen? I setup DNS Scavenging per ...
8
votes
0answers
233 views

OCSP responder not present?

Am trying to set up OCSP validation routines, and so want to be comfortable with the environment first. Found excellent tutorials at for example OpenSSL: Manually verify a certificate against an ...
8
votes
2answers
1k views

Is it a good idea to store Docker volumes in glusterfs?

I am currently thinking about migrating some of our servers and apps to a coreos enviroment. One of the problems I see here is the management of persistent data as coreos does not handle Docker ...
8
votes
0answers
285 views

Reflash Supermicro BIOS Chip with external EEPROM programmer

I've a Supermicro server, out of warranty, and it suicided in the last month. Yes, exactly. During a AMIBIOS update process the BIOS Watchdog has been tripped and the motherboard reseted during the ...
8
votes
3answers
4k views

nginx connection timeout & client closed connection issue

I have this nginx server running on AWS & it was working all fine until recently when couple of users started complaining about the website not opening until they made some 10 attempts to access ...
8
votes
0answers
409 views

How can I debug PAC (proxy auto config) on Windows 8.1 (IE11 and Modern UI)?

On older systems such as Windows 7 + IE10, calling "alert()" in the PAC file would cause a dialog being shown. However, with Windows 8.1 no dialogs are displayed even if IE11 seems to be making use ...
8
votes
2answers
3k views

Mysql Slave stuck in “System lock”

My MySQL slave is spending a lot of time in Slave_SQL_Running_State: System lock. I can see that the system is currently I/O write bound, and that it is processing the log, although slowly. Show ...
8
votes
2answers
2k views

Tomcat 7 trailing slash issue with webapps

Recently I upgraded my tomcat server from 6.x version to the most recent 7.x version. I came up with little trouble, hoping to get help. I have an application calls MyApp On tomcat6, when I went to ...
8
votes
1answer
605 views

FreeNAS ZFS Kernel Panic

I'm running FreeNAS 8 and my computer had a hard reset from a power outage and now every time I try to boot I get the following error message: Error Message: panic: zfs_replay_acl_v0:898: unsupported ...

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