Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hello, just for thinking aubout technik : Immagine that the secondary has a Software RAID 1 under the drbd. take out (hotremove) the (raid1-) mirror, mount, do_what_you_want, unmount, raid-hot-add it again to the raid1. possible ? Frank http://www.rentable-hardware.de -----Ursprüngliche Nachricht----- Von: drbd-user-bounces at lists.linbit.com [mailto:drbd-user-bounces at lists.linbit.com]Im Auftrag von Philipp Reisner Gesendet: Mittwoch, 23. März 2005 12:19 An: Filip Sergeys Cc: drbd-user at lists.linbit.com Betreff: Re: [DRBD-user] Behaviour of drbd-secondary [...] > My experiences are: > - ext2/ext3 will print some assertions to the kernel log, return an > error to the application that wanted to read the file and continue to run. > - reiserfs will crash the machine. > > That means I have been a lucky bastard the last few months. I use > reiserfs .... hmmm, I better a solution quick ! > Would a better way be to drbdsetup /dev/nb0 disconnect before mounting > read only, do my stuff, unmount, and then run drbdsetup /dev/nb0 net xyz > to bring it in secondary state again? Well, as you have noticed that the window for this race condition is rather small -> The probability to hit it is small. __But_it_is_there__ . Therefore people should not mount a normal filesystem on the secondary. Alternative: Use DRBD-0.7 and mirror the partition that holds the data-base immage as well. -philipp -- : Dipl-Ing Philipp Reisner Tel +43-1-8178292-50 : : LINBIT Information Technologies GmbH Fax +43-1-8178292-82 : : Schönbrunnerstr 244, 1120 Vienna, Austria http://www.linbit.com : _______________________________________________ drbd-user mailing list drbd-user at lists.linbit.com http://lists.linbit.com/mailman/listinfo/drbd-user Diese E-Mail enthaelt vertrauliche und/oder rechtlich geschuetzte Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrtuemlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese Mail. Das unerlaubte Kopieren sowie die unbefugte Weitergabe dieser Mail ist nicht gestattet. This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.