[gpfsug-discuss] rhel 7.1 systemd is un mounting gpfs file systems PMR 70339, 122, 000

[Simon Thompson (Research Computing - IT Services)]

I'm sure I read about this, possibly the release notes or faq. Cant find it right now, but I did find a post on devworks:

https://www.ibm.com/developerworks/community/forums/html/threadTopic?id=00104bb5-acf5-4036-93ba-29ea7b1d43b7

So sounds like you need a higher gpfs version, or possibly a rhel patch.

Simon
________________________________________
From: gpfsug-discuss-bounces at spectrumscale.org [gpfsug-discuss-bounces at spectrumscale.org] on behalf of Matt Weil [mweil at genome.wustl.edu]
Sent: 30 November 2015 18:42
To: gpfsug main discussion list
Subject: [gpfsug-discuss] rhel 7.1 systemd is un mounting gpfs file systems     PMR 70339, 122, 000

Hello all,

Not sure if this is the a good place but we are experiencing a strange
issue.

It appears that systemd is un-mounting the file system immediately after
it is mounted.

#strace of systemd shows that the device is not there.  Systemd sees
that the path is failed and umounts the device.  Our only work around
currently is to link /usr/bin/umount to true.  Then the device stays
mounted.

1     stat("/dev/aggr3", {st_mode=S_IFBLK|0644, st_rdev=makedev(239,
235), ...}) = 0
1     readlink("/sys/dev/block/239:235", 0x7ffdb657a750, 1024) = -1
ENOENT (No such file or directory)
1     stat("/sys/dev/block/239:235", 0x7ffdb657a2c0) = -1 ENOENT (No
such file or directory)
1     socket(PF_LOCAL, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 19

# It appears that the major min numbers have been changed
[root at gennsd4 system]# ls -l /sys/dev/block/|grep 239
lrwxrwxrwx 1 root root 0 Nov 19 15:04 253:239 ->
../../devices/virtual/block/dm-239
[root at gennsd4 system]#  ls -l /dev/aggr3
brw-r--r-- 1 root root 239, 235 Nov 19 15:06 /dev/aggr3
[root at gennsd4 system]# ls /sys/dev/block/239:235
ls: cannot access /sys/dev/block/239:235: No such file or directory

[root at gennsd4 system]# rpm -qa | grep gpfs
gpfs.gpl-4.1.0-7.noarch
gpfs.gskit-8.0.50-32.x86_64
gpfs.msg.en_US-4.1.0-7.noarch
gpfs.docs-4.1.0-7.noarch
gpfs.base-4.1.0-7.x86_64
gpfs.gplbin-3.10.0-229.14.1.el7.x86_64-4.1.0-7.x86_64
gpfs.ext-4.1.0-7.x86_64
[root at gennsd4 system]# rpm -qa | grep systemd
systemd-sysv-219-19.el7.x86_64
systemd-libs-219-19.el7.x86_64
systemd-219-19.el7.x86_64
systemd-python-219-19.el7.x86_64

any help would be appreciated.

Thanks

Matt

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