search for: downtime

Hi, I need to get the exact downtime for doing a live migration with ms precision. (I am not bothered about whole migration time which is close to 1 minute.. I need to measure the live migration downtime during which the DomU is out of service.. the figure quoted in the xen documentation says it as ~60 ms.. ) I hope someone must...

What methods do people use to notify users of upcoming downtime in an application, and for handling requests nicely while scheduled downtime is occurring? My Google-fu is not yielding me anything useful-looking. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email...

...rtio-balloon. For an idle 8GB > > guest, this can help to shorten the total live migration time from > > 2Sec to about 500ms in the 10Gbps network environment. > > I just read the slides of this feature for recent kvm forum, the cloud > providers more care about live migration downtime to avoid customers' > perception than total time, however, this feature will increase downtime > when acquire the benefit of reducing total time, maybe it will be more > acceptable if there is no downside for downtime. > > Regards, > Wanpeng Li In theory, there is no factor...

...rtio-balloon. For an idle 8GB > > guest, this can help to shorten the total live migration time from > > 2Sec to about 500ms in the 10Gbps network environment. > > I just read the slides of this feature for recent kvm forum, the cloud > providers more care about live migration downtime to avoid customers' > perception than total time, however, this feature will increase downtime > when acquire the benefit of reducing total time, maybe it will be more > acceptable if there is no downside for downtime. > > Regards, > Wanpeng Li In theory, there is no factor...

After a kernel update (but before rebooting) Is there a way to recompile Zap/Dahdi against the new kernel? My objective is to eliminate the additional downtime that occurs while recompiling/installing zap/dahdi after booting into the new kernel. Please correct me if I'm wrong: My understanding is that until you reboot (after a kernel update), recompiling zap/dahdi still compiles against the OLD kernel, and that's why zap/dahdi doesn't start...

Hi there, I''ve read the paper on Xen live migration, and it shows some very impressive figures, like 165ms downtime on a running web server, and 50ms for a quake3 server. I installed CentOS 5 on 2 servers, each with 2x Xeon E5335 (quad-core), 2x Intel 80003ES2LAN Gb NICs. Then I installed 2 DomUs, also with CentOS 5. One NIC is connected to the LAN (on the same switch and VLAN), the other interconnects the 2 s...

LLVMers, llvm.org will be down on 2/1 (approximate hours 10pm PST - ?), and 2/4 (8am PST - ?). Email will be sent to the list before and after the downtime. During this time ALL services (svn, web, etc) except for the mailing lists will be down. We are performing a server upgrade that will take some time, so I ask that you have patience. We will try to be as speedy as possible. Please let me know if you have any questions. Thank you, Tanya

Hello, I have an imap server with huge Maildirs and several users running dovecot 1.0.13, I need to migrate all the imap accounts to a new box which runs dovecot 1.1.4. The requisite is that need to do it with no downtime or minimal downtime possible, and totally transparent for end users. I have tried IMAP<-->IMAP syncing using a master user in both servers and imapsync, however due to the huge Maildirs (some users have more than 10 years of mail) this tends to be quite slow and painful. Can I tar all th...

...ecting after error xxx.xxx.xxx.176 is the upgraded host, xxx.xxx.xxx.171 is one of the other hosts (the applicable hosts are in the range xxx.xxx.xxx.171-176). Do I have to remove all the hosts from the proxy, upgrade them and then add them again? Or is there a way to handle the upgrade without a downtime? After all one of the reasons I use several hosts is that I do not want to have a downtime. Niels

...; Monday, February 4, 2013 > > On Jan 28, 2013, at 2:08 PM, Tanya Lattner <lattner at apple.com> wrote: > >> LLVMers, >> >> llvm.org will be down on 2/1 (approximate hours 10pm PST - ?), and 2/4 (8am PST - ?). Email will be sent to the list before and after the downtime. During this time ALL services (svn, web, etc) except for the mailing lists will be down. We are performing a server upgrade that will take some time, so I ask that you have patience. We will try to be as speedy as possible. >> >> Please let me know if you have any questions. >>...

...013 >> >> On Jan 28, 2013, at 2:08 PM, Tanya Lattner <lattner at apple.com> wrote: >> >>> LLVMers, >>> >>> llvm.org will be down on 2/1 (approximate hours 10pm PST - ?), and 2/4 (8am PST - ?). Email will be sent to the list before and after the downtime. During this time ALL services (svn, web, etc) except for the mailing lists will be down. We are performing a server upgrade that will take some time, so I ask that you have patience. We will try to be as speedy as possible. >>> >>> Please let me know if you have any questions. &...

...iday, February 1, 2013 & Monday, February 4, 2013 On Jan 28, 2013, at 2:08 PM, Tanya Lattner <lattner at apple.com> wrote: > LLVMers, > > llvm.org will be down on 2/1 (approximate hours 10pm PST - ?), and 2/4 (8am PST - ?). Email will be sent to the list before and after the downtime. During this time ALL services (svn, web, etc) except for the mailing lists will be down. We are performing a server upgrade that will take some time, so I ask that you have patience. We will try to be as speedy as possible. > > Please let me know if you have any questions. > > Thank...

...xx.xxx.176 is the upgraded host, xxx.xxx.xxx.171 is one of the > other hosts (the applicable hosts are in the range xxx.xxx.xxx.171-176). > > Do I have to remove all the hosts from the proxy, upgrade them and then > add them again? Or is there a way to handle the upgrade without a > downtime? After all one of the reasons I use several hosts is that I do > not want to have a downtime. If you look at .176's error log, do you see an error about "director_consistent_hashing settings differ between directors"? Have you set director_consistent_hashing=yes in the old directo...

Hello, there will be a downtime of the mail and list server tomorrow evening from around 20:00 UTC and a few (hopefully) hours after that. This means that there will be no mail traffic at that time to and from centos.org domains. We need to move away mail from the current machine to a new machine, as our old mailserver is a bit...

...s plus the support for ext4 file system as well as the support for network file system server. The three hosts are connected by one D-link gigabit switch (DGS-2205). I find that: 1) If the 3 hosts are booted about the same time, the live migration is working. (Working in this sense means that the downtime is within 1 minute.) However, between any of the two hosts, the downtime is asymmetric. In one direction, the downtime is constantly short, measured by loss of 0-1 packets via ping command to the migrated guest domU. But, in the other direction, the downtime is long and unstable, measured by loss o...

Hello, there will be a downtime of the mail and list server tomorrow evening from around 20:00 UTC and a few (hopefully) hours after that. This means that there will be no mail traffic at that time to and from centos.org domains. We need to move away mail from the current machine to a new machine, as our old mailserver is a bit...

--GYkYyJI7bObpCn+O Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! Due to an unfortunate event [*] the main netfilter.org system had become unavailable from Aug 19 to Aug 22. =20 The long downtime was caused by the netfilter developer workshop, which distracted the netfilter developers from doing any system administration. This caused all @netfilter.org mail addresses, the mailinglist, CVS, rsync, ftp and www access to be unavailable. I have now migrated the www, ftp, rsync, anoncvs and ma...

...ing lists will be unavailable while we replace bad memory. During the hardware replacement, the Mailman web interface, archives, administrative functions, and mailing list mail message distribution will be unavailable. Messages will be queued and should catch up after mailman services are restored. Downtime is estimated at about 30 minutes. Sorry for the downtime, but at least the mailing list server will have better memory. :) -- John T.

...nd as a consequence, we may need to power off machines. While I am hoping that down time will be unnecessary, we may need to power down llvm.org during the cooling outage. It is also possible that other services, such as the mailing lists, will be powered down as well. Please be prepared for downtime. We are told that the cooling outage will start at 8 am Central time and last no longer than 4 hours. We have also been told that it may take a few hours for temperatures to drop once the cooling system is restarted. If we need to take llvm.org down, I'm hoping that the latest we can hav...

***Do you perform downtimes just for the purpose of rebooting the systems? ***Is there a recommended interval Linux system should be rebooted? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20050602/189d0dbf/attachment-0004.html>