https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-7718 Lustre <p>Found that lfs getstripe on lustre bind mount fails to return the attributes. </p> <p>Here are the steps to reproduce the problem. </p> <p>/mnt/lustre is lustre mount point</p> <ol> <li>mkdir /mnt/lustre/dir</li> </ol> <ol> <li>mount --bind /mnt/lustre /home/bind/</li> </ol> <ol> <li>ls /home/bind/<br/> dir</li> </ol> <ol> <li>lfs getstripe /home/bind//dir/<br/> /home/bind//dir/<br/> can't find fs root for '/home/bind/dir': -19<br/> Cannot determine default stripe count.: No such device (19)<br/> can't find fs root for '/home/bind/dir': -19<br/> Cannot determine default stripe size.: No such device (19)<br/> stripe_count: stripe_size: stripe_offset: -1</li> </ol> LU-7718

lfs getstripe does not work on bind mount

Bug Major Resolved Fixed WC Triage Vinayak patch Thu, 28 Jan 2016 07:23:19 +0000 Fri, 13 May 2016 06:58:36 +0000 Mon, 14 Mar 2016 04:37:57 +0000 Lustre 2.8.0 Lustre 2.9.0 0 3 <p>Vinayak (vinayakswami.hariharmath@seagate.com) uploaded a new patch: <a href="http://review.whamcloud.com/18195" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/18195</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-7718" title="lfs getstripe does not work on bind mount" class="issue-link" data-issue-key="LU-7718"><del>LU-7718</del></a> utils: lfs getstripe does not work on bind mount<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: f9338774a5afc5689b62fc5dc1151a8db8e805af</p> <p>This behavior is observed because of <b>get_root_path()</b> in which mount point details are obtained going through <b>/etc/mtab</b> which does not list original mount type and fsname (lustre in this case) of bind mount point. <br/> i.e</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre># cat /etc/mtab /dev/mapper/VolGroup-lv_root / ext4 rw 0 0 proc /proc proc rw 0 0 sysfs /sys sysfs rw 0 0 devpts /dev/pts devpts rw,gid=5,mode=620 0 0 tmpfs /dev/shm tmpfs rw 0 0 /dev/sda1 /boot ext4 rw 0 0 none /proc/sys/fs/binfmt_misc binfmt_misc rw 0 0 gvfs-fuse-daemon /root/.gvfs fuse.gvfs-fuse-daemon rw,nosuid,nodev 0 0 sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw 0 0 /home/build/upstream/lustre-release/lustre/utils/mount.lustre /sbin/mount.lustre none rw,bind 0 0 /dev/loop0 /mnt/mds1 lustre rw,loop=/dev/loop0 0 0 /dev/loop1 /mnt/ost1 lustre rw,loop=/dev/loop1 0 0 /dev/loop2 /mnt/ost2 lustre rw,loop=/dev/loop2 0 0 cli-4@tcp:/lustre /mnt/lustre lustre rw,user_xattr,flock 0 0 =============&gt; lustre mount /mnt/lustre /home/bind none rw,bind 0 0 =============&gt; lustre bind mount not showing original mount info </pre> </div></div> <p><b>/proc/mounts</b> is useful in this case</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre># cat /proc/mounts rootfs / rootfs rw 0 0 proc /proc proc rw,relatime 0 0 sysfs /sys sysfs rw,relatime 0 0 devtmpfs /dev devtmpfs rw,relatime,size=1337872k,nr_inodes=334468,mode=755 0 0 devpts /dev/pts devpts rw,relatime,gid=5,mode=620,ptmxmode=000 0 0 tmpfs /dev/shm tmpfs rw,relatime 0 0 /dev/mapper/VolGroup-lv_root / ext4 rw,relatime,barrier=1,data=ordered 0 0 /proc/bus/usb /proc/bus/usb usbfs rw,relatime 0 0 /dev/sda1 /boot ext4 rw,relatime,barrier=1,data=ordered 0 0 none /proc/sys/fs/binfmt_misc binfmt_misc rw,relatime 0 0 cgroup /cgroup/cpuset cgroup rw,relatime,cpuset 0 0 cgroup /cgroup/cpu cgroup rw,relatime,cpu 0 0 cgroup /cgroup/cpuacct cgroup rw,relatime,cpuacct 0 0 cgroup /cgroup/memory cgroup rw,relatime,memory 0 0 cgroup /cgroup/devices cgroup rw,relatime,devices 0 0 cgroup /cgroup/freezer cgroup rw,relatime,freezer 0 0 cgroup /cgroup/net_cls cgroup rw,relatime,net_cls 0 0 cgroup /cgroup/blkio cgroup rw,relatime,blkio 0 0 /etc/auto.misc /misc autofs rw,relatime,fd=7,pgrp=1625,timeout=300,minproto=5,maxproto=5,indirect 0 0 -hosts /net autofs rw,relatime,fd=13,pgrp=1625,timeout=300,minproto=5,maxproto=5,indirect 0 0 gvfs-fuse-daemon /root/.gvfs fuse.gvfs-fuse-daemon rw,nosuid,nodev,relatime,user_id=0,group_id=0 0 0 sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0 /dev/mapper/VolGroup-lv_root /sbin/mount.lustre ext4 rw,relatime,barrier=1,data=ordered 0 0 /dev/loop0 /mnt/mds1 lustre ro 0 0 /dev/loop1 /mnt/ost1 lustre ro 0 0 /dev/loop2 /mnt/ost2 lustre ro 0 0 192.168.56.104@tcp:/lustre /mnt/lustre lustre rw,flock,user_xattr 0 0 ===============&gt; lustre mount 192.168.56.104@tcp:/lustre /home/bind lustre rw,flock,user_xattr 0 0 ===============&gt; lustre bind mount </pre> </div></div> <p>Patch for this fix can be tracked at <a href="http://review.whamcloud.com/#/c/18195/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/#/c/18195/</a></p> <p>Oleg Drokin (oleg.drokin@intel.com) merged in patch <a href="http://review.whamcloud.com/18195/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/18195/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-7718" title="lfs getstripe does not work on bind mount" class="issue-link" data-issue-key="LU-7718"><del>LU-7718</del></a> utils: lfs getstripe does not work on bind mount<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 7e41081c512afcb883582e9d9c24cd04e77d0b27</p> Development Epic/Theme patch Rank 1|hzxzl3: Rank (Obsolete) 9223372036854775807 Severity