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2884a92408
Bash has special handling when these standard IO files, but there are cases where customers have special restrictions set on them. Likely to avoid leaking error data out of system logs as part of IDS software. In any case, we can just reopen existing file descriptors here in both these cases to avoid this entirely. This will always work. Signed-off-by: Auke Kok <auke.kok@versity.com>
41 lines
811 B
Bash
Executable File
41 lines
811 B
Bash
Executable File
#!/usr/bin/bash
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#
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# This fencing script is used for testing clusters of multiple mounts on
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# a single host. It finds mounts to fence by looking for their rids and
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# only knows how to "fence" by using forced unmount.
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#
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echo "$0 running rid '$SCOUTFS_FENCED_REQ_RID' ip '$SCOUTFS_FENCED_REQ_IP' args '$@'"
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echo_fail() {
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echo "$@" >&2
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exit 1
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}
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# silence error messages
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quiet_cat()
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{
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cat "$@" 2>/dev/null
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}
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rid="$SCOUTFS_FENCED_REQ_RID"
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shopt -s nullglob
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for fs in /sys/fs/scoutfs/*; do
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fs_rid="$(quiet_cat $fs/rid)"
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nr="$(quiet_cat $fs/data_device_maj_min)"
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[ ! -d "$fs" -o "$fs_rid" != "$rid" ] && continue
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mnt=$(findmnt -l -n -t scoutfs -o TARGET -S $nr)
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[ -z "$mnt" ] && continue
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if ! umount -qf "$mnt"; then
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if [ -d "$fs" ]; then
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echo_fail "umount -qf $mnt failed"
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fi
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fi
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done
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exit 0
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