From: "Burakov, Anatoly" <anatoly.burakov@intel.com>
To: ogawa.yasufumi@lab.ntt.co.jp
Cc: dev@dpdk.org, stable@dpdk.org
Subject: Re: [dpdk-stable] [PATCH v2 1/1] fbarray: get fbarrays from containerized secondary
Date: Fri, 5 Jul 2019 09:53:50 +0100 [thread overview]
Message-ID: <b18e5aa4-7592-5f10-b745-35944d4a3d73@intel.com> (raw)
In-Reply-To: <1555386203-23776-2-git-send-email-ogawa.yasufumi@lab.ntt.co.jp>
On 16-Apr-19 4:43 AM, ogawa.yasufumi@lab.ntt.co.jp wrote:
> From: Yasufumi Ogawa <ogawa.yasufumi@lab.ntt.co.jp>
>
> In secondary_msl_create_walk(), it creates a file for fbarrays with its
> PID for reserving unique name among secondary processes. However, it
> does not work if secondary is run as app container because each of
> containerized secondary has PID 1. To reserve unique name, use hostname
> instead of PID if the value is 1.
>
> Cc: stable@dpdk.org
>
> Signed-off-by: Yasufumi Ogawa <ogawa.yasufumi@lab.ntt.co.jp>
> ---
I'm not too well versed in containers - is this hostname 1) always set,
and 2) always unique?
<snip>
> + if (getpid() == 1) {
> + FILE *hn_fp;
> + hn_fp = fopen("/etc/hostname", "r");
> + if (hn_fp == NULL) {
> + RTE_LOG(ERR, EAL,
> + "Cannot open '/etc/hostname' for secondary\n");
> + return -1;
> + }
> +
> + /* with docker, /etc/hostname just has one entry of hostname */
> + if (fscanf(hn_fp, "%s", proc_id) == EOF)
> + return -1;
Wouldn't an error in fscanf() leak the file handle? I think you need to
fclose() before checking the result.
> + fclose(hn_fp);
> + } else
> + sprintf(proc_id, "%d", (int)getpid());
> +
> + snprintf(name, RTE_FBARRAY_NAME_LEN, "%s_%s",
> + primary_msl->memseg_arr.name, proc_id);
>
> ret = rte_fbarray_init(&local_msl->memseg_arr, name,
> primary_msl->memseg_arr.len,
>
--
Thanks,
Anatoly
next prev parent reply other threads:[~2019-07-05 8:53 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-16 1:59 [dpdk-stable] [PATCH] " ogawa.yasufumi
2019-04-16 3:43 ` [dpdk-stable] [PATCH v2 0/1] Get " ogawa.yasufumi
2019-04-16 3:43 ` [dpdk-stable] [PATCH v2 1/1] fbarray: get " ogawa.yasufumi
2019-07-04 20:17 ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
2019-07-05 8:53 ` Burakov, Anatoly [this message]
2019-07-09 10:22 ` Yasufumi Ogawa
2019-07-09 10:24 ` Burakov, Anatoly
2019-07-09 10:26 ` Burakov, Anatoly
2019-07-11 9:37 ` Yasufumi Ogawa
2019-07-11 9:43 ` Burakov, Anatoly
2019-07-11 10:31 ` [dpdk-stable] [PATCH v3 0/1] " yasufum.o
2019-07-11 10:31 ` [dpdk-stable] [PATCH v3 1/1] " yasufum.o
2019-07-11 10:53 ` Burakov, Anatoly
2019-07-11 11:57 ` Yasufumi Ogawa
2019-07-11 13:14 ` Burakov, Anatoly
2019-07-12 2:22 ` Yasufumi Ogawa
2019-07-22 1:06 ` Ogawa Yasufumi
2019-07-22 9:33 ` Burakov, Anatoly
2019-07-22 9:25 ` Burakov, Anatoly
2019-07-24 8:20 ` [dpdk-stable] [PATCH v4 0/1] " yasufum.o
2019-07-24 8:20 ` [dpdk-stable] [PATCH v4 1/1] " yasufum.o
2019-07-24 9:59 ` Burakov, Anatoly
2019-07-30 8:16 ` Thomas Monjalon
2019-07-30 9:18 ` Burakov, Anatoly
2019-07-31 5:48 ` Yasufumi Ogawa
2019-10-11 9:36 ` David Marchand
2019-10-25 15:36 ` David Marchand
2019-10-25 19:54 ` Yasufumi Ogawa
2019-10-26 16:15 ` David Marchand
2019-10-26 18:11 ` Yasufumi Ogawa
2019-10-28 8:07 ` [dpdk-stable] [PATCH v5 0/1] fbarray: fix duplicated fbarray file in secondary yasufum.o
2019-10-28 8:07 ` [dpdk-stable] [PATCH v5 1/1] " yasufum.o
2019-10-29 12:03 ` [dpdk-stable] [dpdk-dev] " Ananyev, Konstantin
2019-10-30 13:42 ` Yasufumi Ogawa
2019-10-30 19:00 ` Ananyev, Konstantin
2019-10-31 10:03 ` Yasufumi Ogawa
2019-10-31 10:32 ` Ananyev, Konstantin
2019-11-01 9:04 ` [dpdk-stable] [PATCH v6 0/1] " yasufum.o
2019-11-01 9:04 ` [dpdk-stable] [PATCH v6 1/1] " yasufum.o
2019-11-01 12:01 ` Ananyev, Konstantin
2019-11-04 10:20 ` Burakov, Anatoly
2019-11-05 10:13 ` David Marchand
2019-11-05 11:31 ` Burakov, Anatoly
2019-11-05 11:41 ` Ananyev, Konstantin
2019-11-06 10:37 ` Burakov, Anatoly
2019-11-08 3:19 ` Yasufumi Ogawa
2019-11-13 21:43 ` [dpdk-stable] [PATCH v7 0/1] " yasufum.o
2019-11-13 21:43 ` [dpdk-stable] [PATCH v7 1/1] " yasufum.o
2019-11-14 10:01 ` Burakov, Anatoly
2019-11-14 11:42 ` Yasufumi Ogawa
2019-11-14 12:27 ` David Marchand
2019-11-26 19:40 ` Yasufumi Ogawa
2019-11-27 10:26 ` Burakov, Anatoly
2019-11-14 12:55 ` David Marchand
2019-11-14 17:32 ` Ananyev, Konstantin
2023-06-13 16:51 ` [dpdk-dev] [PATCH] fbarray: get fbarrays from containerized secondary Stephen Hemminger
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