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-7395 Lustre <p>Not sure if there is any limitation here but running lfs and ls failed </p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>[root@onyx-27 lustre]# lfs getstripe -M /mnt/lustre/other_dir/* |grep 1 1 1 1 1 [root@onyx-27 lustre]# lfs getstripe -M /mnt/lustre/other_dir/* |grep 0 0 0 0 [root@onyx-27 lustre]# lfs getstripe -M /mnt/lustre/migrate_dir/* |grep 0 -bash: /bin/lfs: Argument list too long [root@onyx-27 lustre]# [root@onyx-27 lustre]# ls /mnt/lustre/migrate_dir/* |grep 1 -bash: /bin/ls: Argument list too long [root@onyx-27 lustre]# lfs df -i UUID Inodes IUsed IFree IUse% Mounted on lustre-MDT0000_UUID 1000184 332 999852 0% /mnt/lustre[MDT:0] lustre-MDT0001_UUID 1000184 522379 477805 52% /mnt/lustre[MDT:1] lustre-MDT0002_UUID 1000184 236 999948 0% /mnt/lustre[MDT:2] lustre-MDT0003_UUID 1000184 236 999948 0% /mnt/lustre[MDT:3] lustre-OST0000_UUID 131072 131072 0 100% /mnt/lustre[OST:0] lustre-OST0001_UUID 131072 131072 0 100% /mnt/lustre[OST:1] lustre-OST0002_UUID 131072 131072 0 100% /mnt/lustre[OST:2] lustre-OST0003_UUID 131072 131072 0 100% /mnt/lustre[OST:3] filesystem summary: 523183 523183 0 100% /mnt/lustre </pre> </div></div> client and server: lustre-master #3226 RHEL7 LU-7395

lfs and ls failed as: Argument list too long

Bug Minor Resolved Not a Bug WC Triage Sarah Liu Thu, 5 Nov 2015 19:37:03 +0000 Wed, 5 Aug 2020 21:50:28 +0000 Wed, 5 Aug 2020 21:50:28 +0000 Lustre 2.8.0 0 4 <p>That error is actually coming from bash, and yes there is a limitation on command line length so using wildcards on the command line is error prone. </p> <p>In the case of lfs, you can use something like "find /mnt/lustre/other_dir -maxdepth 1 |xargs lfs -M | grep 0" or "lfs --recursive -M /mnt/lustre/dir | grep 0", depending on how much flexibility you need in limiting the scan. For ls you can just drop the the wildcard so ls will just list that directory or use -R option to enable recursion.</p> <p>Hi Sarah,<br/> Is this part of a test script? At the triage call, it was discussed that the issue is using /* in the commands and should be left off to resolve the problem. however, it if is part of a test script, the script will need to be updated.<br/> Thanks.<br/> Joe</p> <p>The "argument list too long" message is from the expansion of "*" on the command line.</p> <p>That said, there also appears to be a problem that the 4 MDTs have 1M inodes each, but the OSTs only have 128k inodes each and they have all been used, so the filesystem can only create at most 512k files with objects. I don't know if this is also affecting your testing, but I thought I would point it out</p> <p>Hi Joe, <br/> This is not from test script, I hit it when manually tested migration; I will try Robert's way </p> Development Rank 1|hzxsdz: Rank (Obsolete) 9223372036854775807 Severity