Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hello list, ok, now I setup lvm over drbd and dumped the domU's to lv and this works much better and much more stable than file-based VBDs (with domU as loop .img) So finally I can say 'don't put Xen domU als file-based VBSs (loop-FS/ .img) on a drbd-device, use lvm over drbd instead and create a lv for each domU' (if you have intensive disk i/o) So, I'd like to close this thread, because my problem is solved! Thank you for all the suggestion and hints! Joachim > Hello Hans-Joachim, > > thank you for your answer, but now I try to put a LVM over drbd and make > a lv for each domU > and I just leave the file-based VBD solution. Hope this will work. > > regards > Joachim > > >> Hi, >> >> >> >>> meanwhile I upgraded the kernel and drbd to 8.2.4 but the problem still >>> exists. >>> I read your docu on pro-linux and read that you also had problems with >>> Xen VBDs (_file:_ xyz.img), >>> so I think about if I should make LVM over drbd and create a lv for each >>> domU or if I should try to bring the tap:aio functionality into Xen and >>> the kernel, but you did not have good experience with this tap:aio, did >>> you ? >>> >>> >> right, it was desastrous. Maybe newer Xen does better, but I didn't >> follow the Xen development. >> >> >> >>> Can you recommed KVM, is there a docu how you switched from Xen to KVM ? >>> >>> >> I certainly have do do more tests, but currently it runs reliably. >> It performs a ittle slower as Xen, at least on file operations. >> The documentation is in preparation. Basically I created a new VM >> on KVM, booted a rescue disk and rsync'ed the contents of the old VM into >> the new one. With my largest VM with 300 GB this took a while. >> You must not use the default network driver (ne2000) in KVM which >> is broken. >> >> Regards, >> hjb >> >> > > > -- --- Joachim Rieger agimatec GmbH Adenauerallee 73 D-53113 Bonn phone +49(0)228 184 869 80 - 31 telefax +49(0)228 184 869 80 - 15 e-mail: joachim.rieger at agimatec.de URL: http://www.agimatec.de Geschäftsführer: Jürgen Lüders HRB 14607 Amtsgericht Bonn