search for: swtch

I''ve recently re-installed an X4500 running Nevada b109 and have been experiencing ZFS lock ups regularly (perhaps once every 2-3 days). The machine is a backup server and receives hourly ZFS snapshots from another thumper - as such, the amount of zfs activity tends to be reasonably high. After about 48 - 72 hours, the file system seems to lock up and I''m unable to do anything

Now at 36 hours since zdb process start and: PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP 827 root 4936M 4931M sleep 59 0 0:50:47 0.2% zdb/209 Idling at 0.2% processor for nearly the past 24 hours... feels very stuck. Thoughts on how to determine where and why? -- This message posted from opensolaris.org

...ing "zpool detech disk c6t7d0" to detech a mirror causes zpool command to hang with following kernel stack trace: PC: _resume_from_idle+0xf8 CMD: zpool detach disk1 c6t7d0 stack pointer for thread fffffe84d34b4920: fffffe8001c30c10 [ fffffe8001c30c10 _resume_from_idle+0xf8() ] swtch+0x110() cv_wait+0x68() spa_config_enter+0x50() spa_vdev_enter+0x2a() spa_vdev_detach+0x39() zfs_ioc_vdev_detach+0x48() zfsdev_ioctl+0x13e() cdev_ioctl+0x1d() spec_ioctl+0x50() fop_ioctl+0x25() ioctl+0xac() sys_syscall32+0x101() Other zpool commands, df,...

Hello. I've been trying to access www.soft-swtch.org for a couple days, but it seems to be down. Anyone got the same? I need to talk to Steve Underwood, could someone give me his email/phone. Please, in private of course. Thanks. Denis.

...run #iostat -xn 5 to monitor the IO statistics on SF T2000 server. The system also have a heavy IO load, for some reason iostat donot refresh (no any update). It seems like iostat is calling pause() and stucked there. Also my HBA driver''s interrupt stack trace indicates there is a lot of swtch(), the overall IOPS is not good. I have 24 CPUs on this system. First I am curious about why no update in iostat output. If pause() is waiting for a signal why the wakeup signal does not have chance to get delivered. I hope DTrace could help dig into somewhere. Thanks in advance. This messa...

...Please let me know if there are any settings to control it. telnet works fine. my settings, version: OpenSSH_6.6p1, OpenSSL 1.0.1h 5 Jun 2014 stty -a speed 38400 baud; rows 24; columns 80; line = 0; intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>; eol2 = <undef>; swtch = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 0; -parenb -parodd cs8 -hupcl -cstopb cread -clocal -crtscts -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff -iuclc -ixany -imaxbel -iutf8 opost -olcuc...

...table OpenSSH Version: 3.8.1p1 Platform: All OS/Version: Linux Status: NEW Keywords: low-hanging-fruit Severity: normal Priority: P3 Component: scp AssignedTo: bitbucket at mindrot.org ReportedBy: rsc at swtch.com If there are multiple file names matching a remote wildcard expression, then "scp machine:wildcard asdf" will, if asdf does not exist, create asdf for the first file and then overwrite it for each additional file. I would rather it print an error without copying anything, or at lea...

...was, at least if i remember right, made up of 3 engines: 1 that was a special case matcher that handled plain old anchored strings super fast, 1 that dealt with regular expressions that did not require backtracking, and 1 that dealt with regular expressions that did. If you are curious, see http://swtch.com/~rsc/regexp/ for how bad the other libraries can get on fairly simple regexps because they don't use linear time matchers.

Hi, There seems to be a few threads about zpool hang, do we have a workaround to resolve the hang issue without rebooting ? In my case, I have a pool with disks from external LUNs via a fiber cable. When the cable is unplugged while there is IO in the pool, All zpool related command hang (zpool status, zpool list, etc.), put the cable back does not solve the problem. Eventually, I

I setup a ssh chroot jail following this[1] guide. It works for my user to login, use ls and use scp which is all I really want. I do have a problem I cannot solve: when connected and navigating the filesystem, the backspace key actually moves the cursor forward and does not delete what I type. I may have found a hint from some googling that readline will read in /etc/inputrc on login but if

...Some of the other characteristics of the serial port are changing too. After I try to start upsdrvctl, it looks like this: [root@]# stty -F /dev/ttyS0 -a speed 9600 baud; rows 0; columns 0; line = 0; intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>; eol2 = <undef>; swtch = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 0; parenb parodd cs7 hupcl -cstopb cread -clocal -crtscts -ignbrk -brkint -ignpar -parmrk inpck istrip -inlcr -igncr icrnl ixon ixoff -iuclc -ixany -imaxbel -iutf8 opost -olcuc -ocr...

...eports no issues that I can see. ::ps ! grep find R 1248 1243 1248 1243 101 0x4a004000 ffffff02630d5728 find > ffffff02630d5728::walk thread | ::findstack stack pointer for thread ffffff025f15b3e0: ffffff000cb54650 [ ffffff000cb54650 _resume_from_idle+0xf1() ] ffffff000cb54680 swtch+0x145() ffffff000cb546b0 cv_wait+0x61() ffffff000cb54700 txg_wait_synced+0x7c() ffffff000cb54770 zil_replay+0xe8() ffffff000cb54830 zvol_create_minor+0x227() ffffff000cb54850 sdev_zvol_create_minor+0x19() ffffff000cb549c0 devzvol_create_link+0x49() ffffff000cb54ad0 sdev_call_di...

We would like to have access to some kind of regular expression library inside LLVM. For example, we need this to extend the FileCheck test case checking tool to support regular expressions. There are three obvious options: 1. Roll our own library. Multiple unnamed individuals may even already have implementations lying around! :) 2. Use POSIX regcomp facilities. This implies importing some

When running R from the terminal on Linux (Ubuntu 16.04), it core dumps whenever / wherever I press Ctrl-4 or Ctrl-\. You get thrown back to the terminal with "Quit (core dump)" being the only message. Grepping the R source code, it doesn't look like that message is generated by R itself. Over on Twitter, it has been confirmed to also happen on macOS. $ R -d valgrind --vanilla

I have the following gnome terminal profile settings: Backspace = ASCII DEL Delete Key = Escape Sequence If the logged in session in the terminal window is my own user id then the delete key does nothing. If however, I su -l in the same terminal window then the delete key removes the character under the cursor and left shifts the rest of the line. I am fairly confident that the delete

...telnet session thought of itself as being on a 9600 baud terminal, while the SSH session thought of itself as 38400 baud. $ stty -a speed 38400 baud; rows = 34; columns = 80; ypixels = 0; xpixels = 0; intr = ^c; quit = ^|; erase = ^h; kill = ^u; eof = ^d; eol = <undef>; eol2 = <undef>; swtch = <undef>; start = ^q; stop = ^s; susp = ^z; dsusp = <undef>; rprnt = ^r; flush = ^o; werase = ^w; lnext = ^v; -parenb -parodd cs8 -cstopb hupcl cread -clocal -loblk -parext -ignbrk brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl -iuclc ixon -ixany -ixoff -imaxbel isig icanon...

Hello everyone, recently I've found something I consider a bug. Correct me if I'm wrong, but I always thought that Linux' EOL is 0x0A. Imagine my surprise when I saw that all messages that are being output on to the stderr (on any Linux I've tested - Fedora and Ubuntu) are terminated with 0x0D, 0x0A. Maybe that's standard behaviour of all stderr messages in all Linux

...s QUIT <pid>'. One can disable the QUIT signal send by the terminal by: $ stty quit '' such that one gets: $ stty --all speed 38400 baud; rows 33; columns 80; line = 0; intr = ^C; quit = <undef>; erase = ^?; kill = ^U; eof = ^D; eol = <undef>; eol2 = <undef>; swtch = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; discard = ^O; min = 1; time = 0; -parenb -parodd -cmspar cs8 -hupcl -cstopb cread -clocal -crtscts -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff -iuclc -ixany -imaxbel iutf8 opos...

I have a ZFS pool that has been corrupted. The pool contains a single device which was actually a file on UFS. The machine was accidentally halted and now the pool is corrupt. There are (of course) no backups and I''ve been asked to recover the pool. The system panics when trying to do anything with the pool. root@:/$ zpool status panic[cpu1]/thread=fffffe8000758c80: assertion failed:

It seems we are hitting a boundary with zfs send/receive over a network link (10Gb/s). We can see peak values of up to 150MB/s, but on average about 40-50MB/s are replicated. This is far away from the bandwidth that a 10Gb link can offer. Is it possible, that ZFS is giving replication a too low priority/throttling it too much?