similar to: development machine with xen on gentoo

Hi all, This is my first post to the list, I hope someone out there can help! I am running xen 3.0.3, with CentOS 5.2 based Dom0 (kernel-xen-2.6.18-92.1.22.el5) Recently I have noticed some complete system lockups on a few different servers. Neither Dom0 or any of the guests respond to pings, connecting a keyboard and monitor to the system only shows a blank screen. Nothing is written to logs

Is there any reason why I would not want to set dom0-min-mem to 0 or to what I set dom0_mem on my kernel line? Setting to 0 or setting to the same value as dom0_mem disables memory balloon correct? I cant seem to think of a reason why I would want memory ballooning. Also setting dom0-min-mem should that be done in xend-config.sxp or on the kernel command line? -- Nick Anderson

All, I''ve got one Xen server running CentOS 5, with 3 CentOS virtual machines on it. I have what I hope is a simple question: I''d like to backup the virtual machines. I don''t care about anything but the ability to restore a couple of files and be able to be back up and running quickly. At some point I''ll have a spare server ready to migrate running Xen

Dear list, I thought I'd just share my experiences with this 3Ware card, and see if anyone might have any suggestions. System: Supermicro H8DA8 with 2 x Opteron 250 2.4GHz and 4GB RAM installed. 9550SX-8LP hosting 4x Seagate ST3250820SV 250GB in a RAID 1 plus 2 hot spare config. The array is properly initialized, write cache is on, as is queueing (and supported by the drives). StoreSave

From a buddy of mine that has spent a little time with the new cards. This was in response to my email asking about his impressions of them: It just came out in mid-September. There are a couple reasons I'm not thrilled with it: 1) no 8-port multilane version (only 12) 2) the 8-port non-multilane version is a kludge, connector-wise (a row of 3 double-stacked connectors along the

Hello Everyone, We have noticed that one of our servers xen Dom0 is restarting idiopathically. Atleast, we are not able to analyze the cause. I have checked the logs but couldn''t find anything relating to it. Are there any tools such as kdump (which doesn''t seem to work on xenified kernels) for catching the kernel crash snapshot. Regards, Sree Harsha Totakura Member, Open

Hi. I entered one of our domU tonight and see following problem: # iowait -k 5 avg-cpu: %user %nice %system %iowait %steal %idle 0.00 0.00 0.00 100.00 0.00 0.00 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn sda1 0.00 0.00 0.00 0 0 sda2 0.00 0.00 0.00 0

Hi, I've got a new server with a 3ware 9550SXU with the Battery. I am using FreeBSD 7.0-Release (tried both 4BSD and ULE) using AMD64 and the 3ware performance for writes is just plain horrible. Something is obviously wrong but I'm not sure what. I've got a 4 disk RAID 10 array. According to 3dm2 the cache is on. I even tried setting The StorSave preference to

I have two identical servers. The only difference is that the first one has Maxtor 250G drives and the second one has Seagate 320G drives. OS: CentOS-4.4 (fully patched) CPU: dual Opteron 280 Memory: 16GB Raid card: 3ware 9550Sx-8LP Raid volume: 4-disk Raid 5 with NCQ and Write Cache enabled On the first server I have decent performance. Nothing spectacular, but good enough. The second one

I have two identical servers. The only difference is that the first one has Maxtor 250G drives and the second one has Seagate 320G drives. OS: CentOS-4.4 (fully patched) CPU: dual Opteron 280 Memory: 16GB Raid card: 3ware 9550Sx-8LP Raid volume: 4-disk Raid 5 with NCQ and Write Cache enabled On the first server I have decent performance. Nothing spectacular, but good enough. The second one

Greetings, I am looking for a hardware raid card that supports up to 4 SATA II hard disks with hot swap (compatible raid cage) I have short listed two LSI/3Ware cards: 1. 9750-4i 2. 9650SE-4LPML Both appear to be well supported in Linux. I would appreciate your personal experience with the CLI tools provided by LSI. Can they be configured to send email for disk failures or SMART errors? Is

Hello listmates, I would like to build a 12-15 TB RAID 5 data server to run under ContOS. Any recommendations as far as hardware, configuration, etc? Thanks. Boris.

On 05/28/2015 11:13 AM, Valeri Galtsev wrote: > > So, I end up telling them: > before telling others that 3ware RAID cards are bad and let you down, > check that what you set up does not contain obvious blunders. OK. And I'll tell you that none of the failures that I've seen in the last 15 years were a result of user error or poor configuration. > 1. Bad choice of drives

Fellow server-builders out there, this is for you. :) I was trying to build a cheap JBOD type storage solution running CentOS. Ended up snagging a Supermicro SC826TQ-R800LPB 2U case (12 drives slots) and a Supermicro X7DBE-O motherboard. Unfortunately, without thinking I snagged a 3ware 9650SE-12ML SATA RAID card which is a full height card and thus does not fit in my case. I have a few

I have the latest kernel with the drivers for my 3ware 9550SX built in. Where can I find the tools and monitoring apps for this card? Are there rpms hiding somewhere, or do I need to build it from source? -- Bowie

I have a trio of servers that like to reboot during high disk / network IO operations. They don't appear to panic, as I have kernel.panic = 0 in sysctl.conf. The syslog just shows normal messages, like samba complaining about browse master and then just syslogd starting up. The machines seem to crash when I'm not near the console, usually when I'm trying to pull data off them to

Hello: I am looking for a recommendation for a PCI-e RAID card for my server. The server has a PCI-e x16 low profile slot so the card has to be at most 6.6 inches long x 2.536 inches high. I would like to use RAID 5 with 3 drives so I have to have those capabilities. It has to be CentOS 5.4 compatible (Of course!). I took a look at the offerings from 3Ware, but their cards are too long. If

Thank you for your help. Le 05/01/2015 19:10, John R Pierce a ?crit : > works here fine on the 9261, which is an OEM version of the same card > with the connectors in a different orientation... you might check your > LSI firmware revision. My firmware seems to be more up to date. Anyway, I will try to update firmware. I have to check how to do that. # dmesg |grep LSI scsi4 : LSI SAS

Recently I ran into a situation where an ocfs2 (1.4) volume was reporting it was out of space when it was not. Deleting some files helped short term but the problem quickly comes back. I believe this is due to the fragmentation bug that I have seen references to in the mailing list archive. I am trying to reproduce the problem on a test system so that I can validate that upgrading to 1.6

Is anyone running either the newish Adaptec 5805 or the new LSI (3ware) 9750 sas raid controllers in a production environment with Centos 5.3/5.4? The low price of these cards makes me suspicious, compared to the more expensive pre-merger 3ware cards and considerably more expensive Areca ARC-1680. I've been 'burned' by the low cost of Promise raid cards (just as this group pointed