Hi, On Thu, 23 Jan 2014 16:51:17 +0400 Artyom Pervukhin <artyom@xxxxxxxxxx> wrote: > I cannot find any information regarding practical limits on amount > of iSCSI targets supported by tgtd. Trying to use tgtd with many > targets (hundreds of, say 400-500), I've experienced some issues in > its management interface (tgtadm <-> tgtd). We use int for the target number. Except for that, there is no limit. > Each target has only one disk attached, the greater target count is, > the higher probability of experiencing the bug. Sometimes command > showing all targets returns incomplete output, as if it was randomly > stripped. > > # tgtadm -C 0 --op show --mode target | grep -c ^Target > 301 > # tgtadm -C 0 --op show --mode target | grep -c ^Target > 300 > > # tgtadm -C 0 --op show --mode target | wc -c > 317914 > # tgtadm -C 0 --op show --mode target | wc -c > 316690 > # tgtadm -C 0 --op show --mode target | wc -c > 317914 > # tgtadm -C 0 --op show --mode target | wc -c > 310695 > > The closest description to this bug I've managed to find is this thread: http://lists.wpkg.org/pipermail/stgt/2012-July/005324.html (op had the same symptoms). > > I was able to reproduce this bug on tgt 1.0.4 (Debian Squeeze), 1.0.17 (Debian Wheezy), 1.0.43 (latest so far). Tested on linux kernels 2.6.32, 3.2.0 (both amd64). > Hmm, I think that the bug on the thread was fixed. I set up 600 targets with the latest code and doesn't hit such issue. root@rose:~# tgtadm --op show --mode target|grep -c ^Target 600 root@rose:~# tgtadm --op show --mode target|grep -c ^Target 600 root@rose:~# tgtadm --op show --mode target|wc -c 688313 root@rose:~# tgtadm --op show --mode target|wc -c -- To unsubscribe from this list: send the line "unsubscribe stgt" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
