Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Thu, Feb 02, 2012 at 08:39:40AM -0430, Jose Ildefonso Camargo Tolosa wrote: > Greetings, > > I just tried to update to DRBD 8.4.1 (after having issues with 8.3.7 : > it would freeze reads while it was writing, see may other thread for > more info "Read performance goes really low while writing."), and > things looks much worse..... it just freeze to stall!, I can't > background the cp process anymore, and I had to actually reboot the > systems. Oh, and I got this on dmesg (before rebooting): > > [ 4645.904918] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 > [ 4645.951918] IP: [<ffffffff81439544>] clone_endio+0x34/0xe0 > [ 4646.354667] Pid: 3517, comm: kdmflush Not tainted 2.6.32-38-server #83-Ubuntu X8DTN > [ 4647.103463] Call Trace: > [ 4647.118114] [<ffffffff81173d2d>] bio_endio+0x1d/0x40 > [ 4647.148336] [<ffffffffa03a87fb>] drbd_make_request+0x34b/0x350 [drbd] > [ 4647.259232] [<ffffffff812a22a1>] generic_make_request+0x1b1/0x4f0 > [ 4647.365981] [<ffffffff81438fcd>] __map_bio+0xad/0x130 > [ 4647.396717] [<ffffffff814394fd>] __clone_and_map+0x4ad/0x4c0 > [ 4647.464943] [<ffffffff8143a5d8>] __split_and_process_bio+0x108/0x190 > [ 4647.503466] [<ffffffff8143a6b6>] dm_flush+0x56/0x70 > (.....) > > I removed some lines because it was too long (I you need them, I could > paste them somewhere). Very nice, thank you ;-) That should be fixed by http://git.drbd.org/gitweb.cgi?p=drbd-8.4.git;a=commitdiff;h=55a81dc Shame on us for not checking the compiler warnings of your build farm. Cheers, -- : Lars Ellenberg : LINBIT | Your Way to High Availability : DRBD/HA support and consulting http://www.linbit.com DRBD® and LINBIT® are registered trademarks of LINBIT, Austria. __ please don't Cc me, but send to list -- I'm subscribed